The module can be controlled through a UART or USB interface for
data transmissions. Follow the provided communication protocol to
send and receive data effectively.

Audio Output Setup

For audio output, ensure you have connected the Analog or
Digital Outputs based on your requirements. Adjust volume levels
accordingly for optimal audio performance.

Power Management

Monitor power consumption of the IDC737-A module to optimize
battery life and overall performance. Follow recommended
power-saving practices for efficient usage.

FAQ

Q: Can the IDC737-A module connect to multiple devices
simultaneously?

A: Yes, the module can connect to multiple devices with multiple
profiles simultaneously.

Q: What are the recommended applications for IDC737-A?

A: The module is suitable for High-End Audio Visual-Products,
Industrial Data/Audio Applications, Automotive/Aerospace
Applications, Teleconference Equipment, POS/Retail, and
Sports/Leisure Equipment.

“`

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IDC7 Module (HVIN:IDC737-A) Product Information Data Sheet
Ref: IDC737-A-DTS-V001 Latest Update: Feb 10, 2022

Device description
Bluetooth 5.2 Audio and Data Module UART/GPIO Command 11.8mmx18mmx3.2mm form Factor Simultaneous Low Energy and Classic Bluetooth Connect to Apps (iOS/Android/etc.) aptX, aptX HD, aptX Adaptive, AAC, WBS

Applications
High-End Audio Visual-Products Industrial Data/Audio Applications Automotive/Aerospace Applications Teleconference Equipment POS/Retail Sports/Leisure Equipment

Features · Audio and High-Speed Data Bluetooth 5.2 Module ·Music Receiver (HFP, A2DP Sink) and Transmitter (AGHFP, A2DP Source) ·Simultaneous Classic and Low Energy Bluetooth ·Multiple Simultaneous Connections and Profiles ·Profiles: HFP, HSP, AG-HFP, A2DP Sink, A2DP Source, AVRCP, BLE, SPP, GATT ·Analog and Digital Audio connection (I2S, PCM) ·Snapdragon Sound (aptX, aptX HD, aptX Adaptive), AAC, Wide Band Speech ·Simple UART or GPIO interface for control ·Small form factor (11.8mm x 18mm x 3.2mm) ·Bluetooth, FCC(US), RED(Europe), MIC(Japan), KCC(Korea) and SRRC(China) certified ·External Antenna
Summary IDC737-1 is ideal for developers who want to quickly and cost effectively integrate high performance Audio and Data Bluetooth functionality into their products. It is controlled through a simple UART or USB interface that also serves for data transmissions. For the Audio, it has Analog or Digital Outputs. The module can connect to multiple devices with multiple profiles. The power consumption is <1mAmp when connected, <1mAmp in Pairing mode and <6mAmp when streaming music at 3.3V. It is supplied FCC, CE and Bluetooth 5.2 certified. It is also supplied with sample Android and iOS Applications to help integrate the Bluetooth functionality with the product end Application. IDC737-1 features can be also customised for specific complex use cases and scenarios. Please contact info@iot747.com for customisation requests.

For additional questions or to submit technical question, go to www.iot747.com or send an email to info@iot747.com.

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Contents
General Specifications ……………………………………………………………………………………………. 3 Footprint……………………………………………………………………………………………………………….. 4 Pinout ………………………………………………………………………………………………………………….. 5 Hardware Design Guidelines……………………………………………………………………………………. 7
Fixed Voltage Supply Configuration ………………………………………………………………………………………. 7 Battery Voltage Supply Configuration ……………………………………………………………………………………. 8 Module Boot Modes…………………………………………………………………………………………………………….. 9 ESD protection …………………………………………………………………………………………………………………… 9 GPIOs and UART ……………………………………………………………………………………………………………… 10
Audio Interfaces …………………………………………………………………………………………………… 11
Analogue Audio Inputs ………………………………………………………………………………………………………. 11 Analogue Gain ………………………………………………………………………………………………………………….. 11 Example Application Schematics ………………………………………………………………………………………… 12 Analogue Audio Outputs…………………………………………………………………………………………………….. 14 USB supply configuration: ………………………………………………………………………………………………….. 17 Digital Audio Interfaces………………………………………………………………………………………………………. 17 I²S/PCM …………………………………………………………………………………………………………………………… 17
Solder Reflow Profile…………………………………………………………………………………………….. 19 Regulatory Certifications ……………………………………………………………………………………….. 20
United States – FCC ………………………………………………………………………………………………………….. 20 Europe – CE and RoHS Marking …………………………………………………………………………………………. 21
Ordering Information …………………………………………………………………………………………….. 24 Packaging …………………………………………………………………………………………………………… 25 General Notes……………………………………………………………………………………………………… 26 Change Log ………………………………………………………………………………………………………… 27

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General Specifications

No Bluetooth Standard Interfaces Size Weight Frequency Band Modulation Maximum Data Rate Operating Range RF Sensitivity Transmit Power DAC resolution DAC Out Sample Rate DAC SNR Stereo Separation Supply Voltage Typical Current Typical Current Idle Typical Current Discoverable Operating Temperature Storage Temperature

Pin Name Bluetooth 5.2 UART, AIO, GPIO, USB, PCM, I2S, I2C 11.8mm x 18mm x 3.2mm 1g 2,402 MHz to 2,480 MHz 8 DPSK, PI/4 DQPSK, GFSK 3Mbps (typical 1.6Mbps) 20m 0.1% BER at -96dBm (Typical) Max 13dBm 16 bits 8 KHz to 90 KHz Class D typ: 99.3dBA, Class A-B typ: 100.9 dBA Min: 80dB 3.3V to 4.7 V DC (Supports Li Ion battery voltage range) 6mA (Music streaming) <1mA (Connectable) <1mA (Pairing Mode) -40°C to 85°C -40°C to 105°C

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Footprint

IDC7 Module (HVIN:IDC737-A) Product Information Data Sheet
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Pinout

No Pin Name

GND

PIO_21

PIO_20

PIO_10

PIO_60

PIO_9

10 PIO_4

11 GND

12 AIO_1

13 SPKR_LN

14 SPKR_LP

15 SPKR_RN

16 SPKR_RP

17 MIC_BIAS_A

18 MIC_RN

19 MIC_RP

20 MIC_LN

21 MIC_LP

22 GND

23 PIO_3

24 PIO_8

25 PIO_7

26 PIO_5

27 GND

28 SYS_CTRL

29 CHG_EXT

30 VCHG

31 VBAT_SENSE

32 VBAT

33 VDD_PADS

34 VCHG_SENSE

35 USB_N

36 USB_P

37 LED_2/AIO_2

38 LED_4/AIO_4

39 LED_5/AIO_5

40 UART_CTS

41 UART_TX

Pin Type GND GND GND GND Bi-directional Bi-directional Bi-directional Bi-directional Bi-directional Bi-directional GND Bi-directional Audio output Audio output Audio output Audio output Analog input Analog input Analog input Analog input Analog input GND Bi-directional Bi-directional Bi-directional Bi-directional GND Digital input Charger input Charger input Battery sense Battery terminal +ve Supply Supply Bi-directional Bi-directional Bi-directional Bi-directional Bi-directional Bi-directional Bi-directional

IDC7 Module (HVIN:IDC737-A) Product Information Data Sheet
Ref: IDC737-A-DTS-V001 Latest Update: Feb 10, 2022
Pin Description Common Ground Common Ground Common Ground Common Ground Programmable input/output line Programmable input/output line Programmable input/output line Programmable input/output line Programmable input/output line Programmable input/output line Common Ground Analog programmable input/output line Speaker output negative, left Speaker output positive, left Speaker output negative, right Speaker output positive, right Microphone bias Microphone input negative, right Microphone input positive, right Microphone input negative, left Microphone input positive, left Common Ground Programmable input/output line Programmable input/output line Programmable input/output line Programmable input/output line Common Ground Take High to Boot Device External battery charger control Battery Charger Input Battery Charger Sense Battery Positive Positive Supply input Charger input sense pin USB data negative USB data positive LED Open Drain Driver / Analog/Digital Input LED Open Drain Driver / Analog/Digital Input LED Open Drain Driver / Analog/Digital Input UART Clear to Send UART TX Data

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No Pin Name 42 UART_RX 43 UART_RTS 44 RST# 45 LED_0/AIO_0 46 PCM_SYNC 47 PCM_CLK 48 PCM_OUT 49 PCM_IN 50 PIO_2 51 PIO_6 52 GND 53 ANT 54 GND

Pin Type Bi-directional Bi-directional Reset Input with Pull-Up Bi-directional Bi-directional Bi-directional CMOS output CMOS input Bi-directional Bi-directional GND RF IO GND

Pin Description UART RX Data UART request to send ,active low Reset if low for more than 5ms LED Open Drain Driver / Analog/Digital Input Synchronous data sync Synchronous data clock Synchronous data output Synchronous data input Programmable input/output line Programmable input/output line Common Ground RF Input/Output connection 50 Ohms Common Ground

Notes: PIO_X are bidirectional with weak pull down Reset Input is with strong pull-up USB data positive with selectable internal 1.5k pull up resistor UART are Bidirectional with weak pull up

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Hardware Design Guidelines
The IDC737 is typically powered by a fixed 3V supply where the module is included in a larger portable device and charging of the battery is supported by alternative functionality outside the remit of the IDC737. This is the Fixed Voltage Supply Configuration.
Alternatively, for portable applications, the module supports an internal charger function where no extra external components are required for charging operation. In this case, the main power is supplied by a battery, typically a Li Po cell with a nominal 3.1-3.3V supply. A 5V charger input, typically supplied by a USB source, is used to charge the battery. The IDC737 integrated Li-Ion charger is designed to support single Li-Ion cells with a wide range of cell capacities and variable VFLOAT voltages. It supports charge rates of 2mA to 200mA with no additional external components required. This is the Battery Voltage Supply Configuration.
Fixed Voltage Supply Configuration
For a single supply application as part of a larger portable application circuit, a regulated voltage can be used to power the IDC737 directly. There is no direct battery connection and the IDC737 is not used to charge the battery.
In this fixed voltage configuration, the pins VBAT, VBAT_SENSE and VDD_PADS are all connected to a single supply voltage rail. VCHG and VCHG_SENSE and CHG_EXT are left unconnected as per the figure below. Alternatively, we recommend connecting them to test points if possible. Test points can help debug and testing in some cases prior to production.

Pin # Pin Name

Connection

CHG_EXT

Not Connected/Test Point

VCHG

Not Connected/Test Point

VBAT_SENSE Connect to 3.3V Supply

VBAT

Connect to 3.3V Supply

VDD_PADS

Connect to 3.3V Supply

VCHG_SENSE Not Connected/Test Point

** Devices operates down to 2.8V recommended software shut off is at 3.0V

Voltage Input Range NA NA 3.0V** to 4.6V 3.0V** to 4.6V 1.7V to 3.6V NA

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Battery Voltage Supply Configuration
In a battery sourced application VBAT and VBAT_SENSE are connected to the battery source, VDD_PADS is driven from a regulated supply external to the module, VCHG and VCHG_SENSE are connected to the charging input source as per the figure below.

Pin # Pin Name

Connection

CHG_EXT

Not Connected

VCHG

Charger Source (VBUS)

VBAT_SENSE Connect to Battery

VBAT

Connect to Battery

VDD_PADS

Connect to regulated 3.3V Supply

VCHG_SENSE Charger Source (VBUS)

* Can operate at a reduced capacity down to 4.0V, VCHG minimum is 4.0V

** Devices operates down to 2.8V recommended software shut off is at 3.0V

Voltage Input Range
4.75V* to 6.5V 3.0V** to 4.6V 3.0V** to 4.6V 1.7V to 3.6V NA

VDD_PADS is generated by a fixed voltage regulator in this configuration to provide a constant voltage reference for the IO supply domain. When connected to a battery a buck/boost synchronous regulator is recommended, the circuit below provides an example.

To save the cost of an external regulator the VDD_PADS input can be connected direct to the battery input as long as all digital peripherals are tolerant of the variation of the battery voltage over its entire operating range of 2.8V to 4.24V (VFloatmax).

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Module Boot Modes
If the device is `No Power’ state (No voltage applied to the module), a connection (voltage applied) to VBAT or VCHG will transition the module from unpowered to Active.
The device can also be in `Power Off’ State while there is voltage applied to VBAT. The `Power Off’ state is different to the No Power state because the IDC737 has voltage on VBAT. In the `Power Off’ state the following events boot the chip and transition it to the Active state: (1) a rising edge on SYS_CTRL held high for 20 ms or (2) a rising edge on VCHG held high for 20 ms. NOTE that the device cannot be in `Power Off’ when voltage is present on VCHG input. The device can transition from Active to `Power Off’ with a UART command (See UART Manual) or a rising edge on SYS_CTRL.
Depending on the software configuration SYS_CTRL can be used to boot the module or wake from a dormant or sleep state. An example application below shows the SYS_CTRL driven by a push button connected to the VBAT supply, pressing the button connects the source voltage via the resistor divider network to the SYS_CTRL input enabling the device. Please refer to the UART Command Manual for the SYS_CTRL function once the module is booted.

To Wake-Up an external processor on Connection, PIOs can be used. With GPIO control disabled, PIOs will go High when a Bluetooth connection is established. Please refer to the UART command line manual for more details.
ESD protection

The module has no supplementary ESD protection other than that provided by the IC within the module. The Bluetooth IC ESD protection is limited to:
Human Body Model Contact Discharge per ANSI/ESDA/JEDEC JS-001 Class 2 – 2kV (all pins except CHG_EXT; CHG_EXT rated at 1kV)
Machine Model Contact Discharge per JEDEC/EIA JESD22-A115 200V (all pins)
Charged Device Model Contact Discharge per JEDEC/EIA JESD22-C101 Class II – 200V (all pins)
It is recommended to adding supplementary ESD protection to externally available interfaces in the end application.

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GPIOs and UART

IDC7 Module (HVIN:IDC737-A) Product Information Data Sheet
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The module is controlled by GPIOs. This can be configured. If GPIO control is not used, these GPIOs should be left floating. The UART by default does not use RTS/CTS flow control. If the users do not expect to use it, these lines should be left floating.

Digital Pin States on RESET or after Power Up

The following table shows the Digital Pin States on RESET or after power up.

Pin Name / Group
USB_DP USB_DN UART_RX UART_TX UART_CTS UART_RTS PCM_IN PCM_OUT PCM_SYNC PCM_CLK
RST# PIO_X

I/O Type
Digital bi-directional Digital bi-directional Digital bi-directional with PU Digital bi-directional with PU Digital bi-directional with PD Digital bi-directional with PU Digital bi-directional with PD Digital bi-directional with PD Digital bi-directional with PD Digital bi-directional with PD Digital input with PU Digital bi-directional with PD

State after PowerUp/RESET
N/A N/A Strong PU Weak PU Weak PD Weak PU Weak PD Weak PD Weak PD Weak PD Strong PU Weak PD

PD = Pull Down, PU = Pull Up

Input and Tri-state Currents

Min

Typ

Max

Unit

Strong pull-up

-150

-40

-10

Strong pull-down

150

Weak pull-up

-5

-1.0

-0.33

Weak pull-down

0.33

1.0

5.0

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Audio Interfaces
IDC737 supports high quality analogue and digital audio interfaces supported by an audio application processor, high performance analogue and digital audio codecs driving Class-AB and Class-D headphone drivers.
Analogue Audio Inputs
IDC737’s analogue input pins support mono, stereo and line-in, single ended and differential input configurations. The internal High Quality 24bit ADCs support a maximum input voltage of 2.4V (at 0dB gain) and provides over 60dBs of digital and analogue gain with a minimum 80dB of stereo separation (crosstalk). An integrated microphone bias driver with a tuneable bias voltage range from 1.5V to 2.1V delivers up to 3mA of bias current with a typical output noise of 5uVrms suitable for driving most Electret and MEMS microphones.

The analogue audio input is configured via the software API and supports 4 standard modes

· Dual differential · Dual single-ended noninverted (positive inputs) · Dual single-ended inverted (negative inputs) · Single differential

Or each input can be configured individually for differential or single ended microphone or line-in input configuration. Analogue audio inputs should be AC coupled with a minimum of 2.2uF capacitor, capacitor values below this degrade the low frequency response.

Analogue Gain
An internal pre-amplifier prior to the HQADC provides a 0-39dB of programmable gain in 3dB steps. At 0dB gain the preamplifier maximum input voltage swing is 2.4V as the gain increases the input voltage swing must reduce to avoid compressing the ADC. The table below shows the maximum recommended analogue input voltage swing vs analogue preamplifier gain settings.

Analogue Gain 0 3 6 9 12 15 18 21 24 27 30 33 36

Input Impedance (k) 20 20 20 20 20 20 20 20 20 10 10 10 10

Input amplitude (mVpk-pk) 2400 1699 1203 852 603 427 302 214 151 107 76 54 38

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For line-in input applications a gain of 0dB is recommended

Example Application Schematics IDC737 Analogue Audio Nets

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Ref: IDC737-A-DTS-V001 Latest Update: Feb 10, 2022

All analogue inputs are DC coupled and must be externally ac coupled for correct operation. Stereo Line In A single 4-pole audio jack provides L and R audio channels:

Mono Line In Two 2-pole audio jacks providing independent audio channels

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One 2-pole audio jack providing single mono audio source, unused inputs are AC grounded
Microphone Input Dual Microphones

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Some microphones may require a higher load capacitance, in which case a maximum 2.2uF capacitor can be added across MIC_BIAS with a 10R value resistor inserted between the MIC_BIAS_A and the microphone as below:

If a single microphone is used, the unused analogue inputs should be AC coupled to ground. MEMS Microphone

If a single microphone is used, the unused analogue inputs should be AC coupled to ground.
Analogue Audio Outputs
The IDC737’s Class-D and Class-AB headset/speaker outputs are stereo differential outputs capable of directly driving 30 mWrms into 32 or 16 speaker loads. Class-D operation enables reduced power consumption, ideal for headset applications, its 3-state BD modulation enables a filter-free configuration, where most of the analogue driver is powered down, supports differential headphone loads of 16 /32 .

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To achieve optimal audio performance in direct drive applications the DACs should operate at close the maximum output voltage of 1Vrms. This can be achieved by adding source resistors between the output terminals and the speaker driver, the value of which are double the rated speaker impedance. i.e., for 16 speakers use 32 resistors, for 32 speakers use 64 resistors.
Class-AB operation enables either headphone or speaker applications, with higher impedance loads such as differential line out or for driving an external power amplifier. For such applications requiring external power amplifiers, the output should be filtered using a 30 kHz RC low pass filters as shown in the application schematic below:

Further noise shaping can be employed by the addition of a DC blocking capacitor between the input filter and the input resistor of the audio amplifier. This forms a high pass filter which has a 3dB cut-off frequency described by the equation below.

The recommended layout for the analogue audio outputs is to use differential routing, keeping the two channels isolated from each other and from other sensitive circuitry.

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The IDC747 DK1 board (which has the IDC747 module which is similar to the IDC737 but with an integrated Antenna) uses an external audio amplifier for audio application demonstration purposes. When using an external audio amplifier, it is important to follow the manufacturers recommended circuit and layout guidelines to achieve the best possible audio experience. Always use a high-quality audio amplifier ideally with click and pop suppression circuits built in. These amplifiers use noise suppression and soft start techniques to filter supply noise and transients as well as minimising ground loop currents and DC offsets that can cause degraded audio effects. Some amplifiers even employ ground sensing and suppression techniques to minimise and remove noise coupling to the audio path.
In the example amplifier circuit shown above the amplifier audio ground is connected to the main ground via a single “star” point at the audio output jack. This is suitable for connection to headphones where noise from external sources are not expected.
When connecting to external devices such as laptops in a “Line In” configuration there is a possibility that the sleeve of the audio cable can carry noise derived from the laptop. Also external devices connected through the audio cable sleeve can have different ground potentials which causes currents to flow through the sleeve ground. In this case it is important to isolate the sleeve ground from the audio amplifier to avoid the noise coupling to the amplifier and degrading the signal source. In this case add a filter circuit or ferrite bead connecting the sleeve ground to the ground on the application board as shown below.

Some amplifiers do not support “capless” operation and require ac coupling on the input and output of the amplifier. Series capacitance can introduce clicks and pops during turn off and turn on as voltage transients occur across the capacitors causing audible spikes on the audio output.
Choice of capacitors used in these configurations is important, avoid using ceramic capacitors as these tend to have high voltage coefficients. Use low voltage coefficients capacitors such as tantalum or electrolytic capacitors to reduce low frequency distortion effects.

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In differential mode the tolerance of the source and feedback resistors which set the gain of an amplifier is important. 1% resistors give a 40dB CMRR (Common Mode Rejection Ratio) whereas 0.1% resistors give a 60dB CMRR. Use 0.1% resistors where possible.
USB supply configuration:
In many applications supply noise can significantly degrade audio performance. This is especially true in USB powered applications or where a USB source is used to charge a battery powered application. USB sources have varying noise levels and in addition to steady state noise levels, the plugging and unplugging of USB chargers can cause large supply transients that ripple through the power supply chain to cause clicking and popping in the audio domain. It is recommended to follow good noise immunity pcb design practices, ground isolation, short residual current return paths and the use of ferrite bead and large decoupling capacitors on USB supply connections.
An example USB supply configuration is shown below.

Digital Audio Interfaces
The IDC737 supports digital microphones as inputs, and interfaces to external audio devices via a standard I2S/PCM interface. Up to eight channels of digital microphone inputs are supported. These are grouped as four pairs, as most digital microphones support a L/R selection pin which allows for the clocking of two microphones from the same clock, with one being sampled on the rising clock edge and the other on the falling clock edge
Eight digital microphone clock frequencies can be generated. Configurable at: 500 kHz, 571 kHz, 666 kHz, 800 kHz, 1 MHz, 1.33 MHz, 2 MHz, and 4 MHz clock frequencies.
The digital microphone, CLK and Data functions can be mapped to any PIO on the module.

I²S/PCM
IDC737 provides a standard I²S/PCM interface capable of operating at up to a 384 kHz sample rate. The I²S/PCM port is highly configurable with alternate PCM modes, and has the following options:

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Ref: IDC737-A-DTS-V001 Latest Update: Feb 10, 2022

SYNC edge position selectable to align with start of channel data (PCM mode), or 1 clock before start of channel
· data (I²S mode) · Master (generate CLK and SYNC) or Slave (receive CLK and SYNC) (PCM/I²S) · SYNC polarity (PCM) · Long or short SYNC (PCM) · Left or right justification (PCM/I²S) · Sign extension / zero pad (PCM) · Optional tri-state at end of word (PCM) · Optional invert of clock (PCM/ I²S) · 13/16/24-bit per sample (PCM/ I²S) · Up to four slots per frame (PCM)
The I2S/PCM interface is available on dedicated pins 47-49 see the Pin Out table on pages 5 and 6 for details. A Master Clock (MCLK) function for synchronising external devices is not supported on IDC737.

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Solder Reflow Profile
The solder profile is described below.

IDC7 Module (HVIN:IDC737-A) Product Information Data Sheet
Ref: IDC737-A-DTS-V001 Latest Update: Feb 10, 2022

Zone A: Preheat: This raises the temperature at a controlled rate, typically 0.5 – 2C/s. This will preheat the component to 120°C to 150°C to distribute the heat uniformly to the PCB.
Zone B: Equilibrium1: In this zone, the flux becomes soft and uniformly spreads solder particles over the PCB board, preventing re-oxidisation. The recommended temperature for this zone is 150°C to 200°C for 60s to 120s.
Zone C: Equilibrium2: This is optional and in order to resolve the upright component issue. Temperature is 210°C to 217°C for 20s to 30s.
Zone D: Reflow zone: The temperature should be high enough to avoid wetting but low enough to avoid component deterioration. The recommended peak temperature is 230°C to 250°C. The soldering time should be 30s to 90s when the temperature is above 217°C.
Zone E: Cooling: The cooling rate should be fast to keep the solder grains small which will give a longer lasting joint. A typical cooling rate is 4°C/s.

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IDC7 Module (HVIN:IDC737-A) Product Information Data Sheet
Ref: IDC737-A-DTS-V001 Latest Update: Feb 10, 2022

Regulatory Certifications
ISED Regulatory Compliance
This device contains licence-exempt transmitter(s)/receiver(s) that comply with Innovation, Science and Economic Development Canada’s licence-exempt RSS(s). Operation is subject to the following two conditions: (1 )This device may not cause interference.(2)This device must accept any interference, including interference that may cause undesired operation of the device.
L’émetteur/récepteur exempt de licence contenu dans le présent appareil est conforme aux CNR d’Innovation, Sciences et Développement économique Canada applicables aux appareils radio exempts de licence. L’exploitation est autorisée aux deux conditions suivantes :(1)L’appareil ne doit pas produire de brouillage; (2)L’appareil doit accepter tout brouillage radioélectrique subi, même si le brouillage est susceptible d’en compromettre le fonctionnement.
RF Exposure Compliance
This equipment complies with FCC/IC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with minimum distance 20cm between the radiator and your body. This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter.
The IDC747 module (which is the IDC737 with an integrated antenna) is delivered with FCC, CE and Bluetooth SIG certifications. This allows to integrate the module in an end product without the need to obtain subsequent and separate approvals from these regulatory agencies. This is valid in the case no other intentional or un-intentional radiator components are incorporated into the product. Without these certifications, an end product cannot be marketed in the relevant regions. Since the IDC737 is the IDC747 but with an external antenna, it potentially can be certified using the IDC737 in case a similar antenna is used. Please refer to a testing house to confirm the specifics for your design. The text bellow is for the IDC747.
United States – FCC

In case no other intentional or un-intentional radiator is incorporated, the module’s FCC certification allows users to integrate the module into products without the need to obtain subsequent and separate approval.
The module is supplied approved as “intentional transmitter radio module” by the United States’ Federal Communications Commission (FCC) with accordance to CFR47 Telecommunications Part 15, Subpart C, section 212. This certification is applicable in all the states in the United States.
The certification allows products to be listed in the NRTL (National Recognized Test Laboratory) as appointed by OSHA (Occupational Safety and Health Administration).
Label and Documentation:
The module has been labelled with its own FCC ID number. In order to the extend the certification granted to the module, its FCC ID number must be displayed on the finished product in which the

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IDC7 Module (HVIN:IDC737-A) Product Information Data Sheet
Ref: IDC737-A-DTS-V001 Latest Update: Feb 10, 2022

module is integrated. The following wording should be used “Contains Transmitter Module FCC ID: 2A3WYID7” or “Contains FCC ID: 2A3WYIDC7”.

The user-manual for any product in which the module is integrated in must include the following statements:

This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: Reorient or relocate the receiving antenna; Increase the separation between the equipment and receiver; Connect the equipment into an outlet on a circuit different from that to which the receiver is connected; Consult the dealer or an experienced radio/TV technician for help.

This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. Changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment.
For further information regarding the FCC certification requirements please review the following websites:
Federal Communications Commission (FCC): http://www.fcc.gov
FCC Office of Engineering and Technology (OET) Laboratory Division Knowledge Database (KDB): http://apps.fcc.gov/oetcf/kdb/index.cfm
Europe – CE and RoHS Marking
In case no other intentional or un-intentional radiator is incorporated, the module’s CE marking certification allows users to integrate the module into products without the need to obtain subsequent and separate CE approval.
The module has been tested and granted approval as R&TTE Directive product under the 1999/5/EC Essential Requirements for Health and Safety (Article (3.1(a)), Electromagnetic Compatibility, (EMC) (Article 3.1(b)), and Radio (Article 3.2). A Notified Body Opinion has been issued.

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IDC7 Module (HVIN:IDC737-A) Product Information Data Sheet
Ref: IDC737-A-DTS-V001 Latest Update: Feb 10, 2022

The module has also been tested and granted approval under the directive on the restriction of the use of certain hazardous substances in electrical and electronic equipment 2002/95/EC (commonly referred to as the Restriction of Hazardous Substances Directive or RoHS). This certification ensures the module is environmentally safe and free from hazardous substances (including Lead).
Both certifications are applicable in all the 27 countries of the European Economic Area.
Labelling and Documentation
The certification number is STCT2216-EU.
The RoHS certification does not dictate any specific product labelling. However, we recommend marking the product with a “RoHS Compliant” statement.
R&TTE Directive requires a manufacturer to establish technical documentation. It must be kept by the manufacturer or his authorised representative in the EU for at least 10 years after the last product has been manufactured. The documentation must cover: A general description of the product, conceptual design and manufacturing drawings and schemes of components, sub-assemblies, circuits and other design documentation, descriptions and explanations necessary for the understanding of said drawings and schemes and the operation of the product, a list of the standards referred to in Article 5, applied in full or in part, and descriptions and explanations of the solutions adopted to meet the

essential requirements of the Directive where such standards results of design calculations made, examinations carried out, etc., test reports.
Test reports must include the following table containing the module tests:

Certification Safety Health EMC Radio

Standards
EN IEC 623681:2020+A11:2020 EN 50663:2017 EN 62479:2010 EN 301 489-17 V3.2.4 EN 301 489-1 V2.2.3
EN 300 328 V2.2.2

Article

Laboratory

Report Number

Date

(3.1(a))

(3.1(b)) (3.2)

For further labelling and CE marking requirements please review the R&TTE Compliance Association Technical Guidance: http://rtteca.com/ For further information regarding the R&TTE certification requirements please review the following websites:

Radio and Telecommunications Terminal Equipment (R&TTE): http://ec.europa.eu/enterprise/rtte/index_en.htm

European Conference of Postal and Telecommunications Administrations (CEPT): http://www.cept.org

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European Telecommunications Standards Institute (ETSI): http://www.etsi.org
European Radio Communications Office (ERO): http://www.ero.dk

IDC7 Module (HVIN:IDC737-A) Product Information Data Sheet
Ref: IDC737-A-DTS-V001 Latest Update: Feb 10, 2022

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IDC7 Module (HVIN:IDC737-A) Product Information Data Sheet
Ref: IDC737-A-DTS-V001 Latest Update: Feb 10, 2022

Ordering Information
Order Number IDC737-1

Description Bluetooth Module

Modules are shipped Flashed with the latest AudioAgent firmware production build. Customers need to confirm at order with distributors that they will receive the firmware build they require. For volume orders (1k quantities), modules can be shipped flashed with custom firmware. Please inquire with info@iot747.com for more information.

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IDC7 Module (HVIN:IDC737-A) Product Information Data Sheet
Ref: IDC737-A-DTS-V001 Latest Update: Feb 10, 2022

Packaging
Modules are shipped in a Tape and Reel. The package and inside tape and reel dimensions are shown below:

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IDC7 Module (HVIN:IDC737-A) Product Information Data Sheet
Ref: IDC737-A-DTS-V001 Latest Update: Feb 10, 2022

General Notes
IOT747 products are not authorised for use in life-support or safety-critical applications. Use in such applications is done at the sole discretion of the customer. IOT747 will not warrant the use of its devices in such applications.
While every care has been taken to ensure the accuracy of the contents of this document, IOT747 cannot accept responsibility for any errors. IOT747 reserves the right to make modifications, corrections and any other changes to its products at any time. Customers should obtain the latest information before placing orders.
IOT747 other products, services and names used in this document may have been trademarked by their respective owners. The publication of this information does not imply that any license is granted under any patent or other rights owned by IOT747.
Refer to www.iot747.com for more information. IOT747® is a trading name for Company Deep Limited.

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IDC7 Module (HVIN:IDC737-A) Product Information Data Sheet
Ref: IDC737-A-DTS-V001 Latest Update: Feb 10, 2022

Change Log
6/1/2021: Draft Version 9/4/2021: Minor Corrections / Typos Added information on front page 20/7/2021: Clarified Supply configurations. Added Test Points for Fixed Supply 21/7/2021: Simplified Supply configuration Removed detailed Power States. Deleted references to SPI as only used in IDC707. 20/1/2022: Added certification details and corrected Power Supply connection with correct Pins.

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Documents / Resources

IOT747 IDC7 Module [pdf] Owner's Manual
IDC737-A, IDC7 Module, IDC7, Module

References

User Manual

IOT747 IDC7 Module Owner’s Manual

IDC7 Module

Product Information

Specifications

Product Usage Instructions

Connecting to Apps

Data Transmission

Audio Output Setup

Power Management

FAQ

Q: Can the IDC737-A module connect to multiple devices
simultaneously?

Q: What are the recommended applications for IDC737-A?

Documents / Resources

References

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