CMT2300A Ultra-Low Power Sub-1GHz RF Transceiver Datasheet

Overview

The CMT2300A is an ultra-low power, high-performance RF transceiver designed for applications operating from 140 to 1020 MHz. It supports OOK, (G)FSK, and (G)MSK modulation and is part of the CMOSTEK NextGenRF™ family. With high integration, it simplifies system design. The device offers +20 dBm transmit power and -121 dBm sensitivity, supporting various packet formats and coding schemes. It operates from 1.8 V to 3.6 V, consuming as little as 8.5 mA in ultra-low power receive mode at -121 dBm sensitivity, and 23 mA for 13 dBm transmit power.

Features

Frequency Range: 140 to 1020 MHz
Modulation: OOK, (G)FSK, and (G)MSK
Data Rate: 0.5 to 300 kbps
Sensitivity: -121 dBm at 2.0kbps (FRF = 433.92 MHz), -111 dBm at 50kbps (FRF = 433.92 MHz)
Operating Voltage: 1.8 to 3.6 V
Transmit Current: 23 mA @ 13 dBm (FSK, 433.92 MHz), 72 mA @ 20 dBm (FSK, 433.92 MHz)
Receive Current: 8.5 mA @ 433.92 MHz (FSK, High Power), 7.2 mA @ 433.92 MHz (FSK, Low Power)
Ultra-Low Power Receive Mode
Sleep Current: 300 nA (DutyCycle = OFF), 800 nA (DutyCycle = ON)
4-wire SPI Interface
Supports Direct and Packet Modes
Configurable Packet Handler and 64-Byte FIFO
NRZ, Manchester, Data Whitening Decoding
Forward Error Correction (FEC)
16-pin QFN3x3 Package

Applications

Automatic Meter Reading
Home Security and Building Automation
ISM Band Data Communication
Industrial Monitoring and Control
Remote Control and Security Systems
Remote Keyless Entry
Wireless Sensor Nodes
Tag Readers

Electrical Characteristics

Recommended Operating Conditions

Parameter	Symbol	Min	Typical	Max	Unit
Operating Supply Voltage	VDD	1.8		3.6	V
Operating Temperature	TOP	-40		85	°C
Supply Voltage Slew Rate			1		mV/us

Absolute Maximum Ratings

Parameter	Symbol	Condition	Min	Max	Unit
Supply Voltage	VDD		-0.3	3.6	V
Interface Voltage	VIN		-0.3	3.6	V
Junction Temperature	TJ		-40	125	°C
Storage Temperature	TSTG		-50	150	°C
Soldering Temperature	TSDR	Duration at least 30s		255	°C
ESD Rating (HBM)		Human Body Model	-2	2	kV
Latch-up Current		@ 85 °C	-100	100	mA

Note: Exceeding absolute maximum ratings may cause permanent damage. ESD sensitive device: Handle with appropriate ESD protection measures.

Power Consumption

Power consumption specifications for various operating modes are detailed in Table 3.

Parameter	Symbol	Condition	Typical	Unit
Sleep Current	ISLEEP	Sleep Mode, Sleep Timer Disabled	300	nA
Sleep Current	ISLEEP	Sleep Mode, Sleep Timer Enabled	800	nA
Standby Current	IStandby	Crystal Oscillator Enabled	1.45	mA
RFS Current	IRFS	433 MHz	5.7	mA
TFS Current	ITFS	433 MHz	5.6	mA
RX Current (High Power)	IRx-HP	FSK, 433 MHz, 10 kbps, 10 kHz FDEV	8.5	mA
RX Current (Low Power)	IRx-LP	FSK, 433 MHz, 10 kbps, 10 kHz FDEV	7.2	mA
TX Current	ITx	FSK, 433 MHz, +13 dBm (Direct)	23	mA
TX Current	ITx	FSK, 433 MHz, +20 dBm (Direct)	72	mA

Full power consumption details are available in Table 3 of the document.

Receiver Specifications

Key receiver specifications are detailed in Table 4.

Parameter	Symbol	Condition	Typical	Unit
Data Rate	DR	OOK	40	kbps
Data Rate	DR	FSK and GFSK	300	kbps
Frequency Deviation	FDEV	FSK and GFSK	200	kHz
Sensitivity @ 433 MHz	S433-HP	DR = 2.0 kbps, FDEV = 10 kHz	-121	dBm
Sensitivity @ 868 MHz	S868-HP	DR = 10 kbps, FDEV = 10 kHz (Low Power)	-111	dBm
Sensitivity @ 915 MHz	S915-HP	DR = 20 kbps, FDEV = 20 kHz (Low Power)	-109	dBm
Image Rejection	IMR	FRF=433 MHz	35	dBc
IF Bandwidth	BW		500	kHz

Refer to Table 4 for detailed receiver specifications.

Transmitter Specifications

Key transmitter specifications are detailed in Table 5.

Parameter	Symbol	Condition	Min	Typical	Max	Unit
Output Power	POUT		-20		+20	dBm
Output Power Step	PSTEP			1		dB
GFSK Gaussian Filter Coefficient	BT		0.3	0.5	1.0
Output Power Variation with Temperature	POUT-TOP			1		dB
Spurious Emissions		1 GHz to 12.75 GHz, including harmonics	-42	-36		dBm
Harmonics @ 433 MHz	H2433	2nd Harmonic, +20 dBm POUT	-46			dBm
Harmonics @ 868 MHz	H2868	2nd Harmonic, +20 dBm POUT	-43			dBm
Harmonics @ 915 MHz	H2868	2nd Harmonic, +20 dBm POUT	-48			dBm

Refer to Table 5 for detailed transmitter specifications, including harmonics at different power levels.

Pin Description

The CMT2300A is available in a 16-pin QFN package. The pinout is shown in Figure 1 and described in Table 12.

Figure 1. CMT2300A Pinout Diagram

The diagram shows a top view of the 16-pin QFN package. Pins are numbered 1 to 17. Pin functions include RFIP, RFIN, PA, AVDD, AGND, DGND, DVDD, GPIO3, SCLK, SDIO, CSB, FCSB, XI, XO, GPIO2, GPIO1, and GND.

Pin No.	Name	I/O	Function Description
1	RFIP	I	RF Signal Input P
2	RFIN	I	RF Signal Input N
3	PA	O	PA Output
4	AVDD	IO	Analog VDD
5	AGND	IO	Analog GND
6	DGND	IO	Digital GND
7	DVDD	IO	Digital VDD
8	GPIO3	IO	Configurable as: CLKO, DOUT/DIN, INT2, DCLK (TX/RX)
9	SCLK	I	SPI Clock
10	SDIO	IO	SPI Data Input/Output
11	CSB	I	SPI Chip Select (Register)
12	FCSB	I	SPI Chip Select (FIFO)
13	XI	I	Crystal Input
14	XO	O	Crystal Output
15	GPIO2	IO	Configurable as: INT1, INT2, DOUT/DIN, DCLK (TX/RX), RF_SWT
16	GPIO1	IO	Configurable as: DOUT/DIN, INT1, INT2, DCLK (TX/RX), RF_SWT
17	GND	I	Analog GND, must be connected

Note [1]: INT1 and INT2 are interrupts; DOUT is demodulated output; DIN is modulated input; DCLK is the clock for modulation or demodulation data rate synchronization, which automatically switches during TX/RX mode changes.

Typical Application Schematics

Two typical application schematics are provided: Direct Tie and RF Switch (Switch Type).

Direct (Direct Tie) Schematic

Figure 2. Direct (Direct Tie) Typical Application Schematic

This circuit diagram shows the CMT2300A integrated circuit connected to external passive components (capacitors C1-C11, inductors L1-L8), a 26 MHz crystal oscillator (Y1), and an RF output connector (P1, SMA). It represents a basic RF front-end configuration.

Bill of Materials (13 dBm Direct Tie)

Table 13 lists the components for the 13 dBm Direct Tie configuration.

Component	Description	433 MHz (+13 dBm)	868 MHz (+13dBm)	915 MHz (+13dBm)	Unit	Supplier
C1	±5%, 0603 NP0, 50 V	15	22	22	pF
C2	±5%, 0603 NP0, 50 V	5.6	6.2	6.2	pF
C3	±5%, 0603 NP0, 50 V	7.5	3.6	3.3	pF
C4	±5%, 0603 NP0, 50 V	24	24	24	pF
C5	±5%, 0603 NP0, 50 V	24	24	24	pF
C6	±5%, 0603 NP0, 50 V	4.7	2.2	2.2	pF
C7	±5%, 0603 NP0, 50 V	4.7	2.2	2.2	pF
C8	±5%, 0603 NP0, 50 V	4.7			uF
C9	±5%, 0603 NP0, 50 V	470			pF
C10	±5%, 0603 NP0, 50 V	0.1			uF
C11	±5%, 0603 NP0, 50 V	0.1			uF
L1	±5%, 0603叠层贴片电感	180	100	100	nH	Sunlord SDCL
L2	±5%, 0603叠层贴片电感	56	10	8.2	nH	Sunlord SDCL
L3	±5%, 0603叠层贴片电感	39	8.2	6.8	nH	Sunlord SDCL
L4	±5%, 0603叠层贴片电感	18	10	8.2	nH	Sunlord SDCL
L5	±5%, 0603叠层贴片电感	18	10	8.2	nH	Sunlord SDCL
L6	±5%, 0603叠层贴片电感	27	15	12	nH	Sunlord SDCL
L7	±5%, 0603叠层贴片电感	27	15	12	nH	Sunlord SDCL
L8	±5%, 0603叠层贴片电感	68	12	12	nH	Sunlord SDCL
Y1	±10 ppm, SMD32*25 mm	26			MHz	EPSON
U1	CMT2300A,Ultra-Low Power Sub-1GHz RF Transceiver	-	-	-	-	CMOSTEK

Bill of Materials (20 dBm Direct Tie)

Table 14 lists the components for the 20 dBm Direct Tie configuration.

Component	Description	433 MHz (+20 dBm)	868 MHz (+20 dBm)	915 MHz (+20 dBm)	Unit	Supplier
C1	±5%, 0603 NP0, 50 V	15	18	18	pF
C2	±5%, 0603 NP0, 50 V	3.0	3.6	3.6	pF
C3	±5%, 0603 NP0, 50 V	6.2	3.3	3.3	pF
C4	±5%, 0603 NP0, 50 V	24	24	24	pF
C5	±5%, 0603 NP0, 50 V	24	24	24	pF
C6	±5%, 0603 NP0, 50 V	4.7	2	1.8	pF
C7	±5%, 0603 NP0, 50 V	4.7	2	1.8	pF
C8	±5%, 0603 NP0, 50 V	4.7			uF
C9	±5%, 0603 NP0, 50 V	470			pF
C10	±5%, 0603 NP0, 50 V	0.1			uF
C11	±5%, 0603 NP0, 50 V	0.1			uF
L1	±5%, 0603叠层贴片电感	180	100	100	nH	Sunlord SDCL
L2	±5%, 0603叠层贴片电感	22	12	12	nH	Sunlord SDCL
L3	±5%, 0603叠层贴片电感	15pF	15	15	nH	Sunlord SDCL
L4	±5%, 0603叠层贴片电感	33	6.2	6.2	nH	Sunlord SDCL
L5	±5%, 0603叠层贴片电感	33	6.2	6.2	nH	Sunlord SDCL
L6	±5%, 0603叠层贴片电感	27	15	15	nH	Sunlord SDCL
L7	±5%, 0603叠层贴片电感	27	15	15	nH	Sunlord SDCL
L8	±5%, 0603叠层贴片电感	68	12	12	nH	Sunlord SDCL
Y1	±10 ppm, SMD32*25 mm	26			MHz	EPSON
U1	CMT2300A,Ultra-Low Power Sub-1GHz RF Transceiver	-	-	-	-	CMOSTEK

RF Switch (Switch Type) Schematic

Figure 3. RF Switch (Switch Type) Typical Application Schematic

This circuit diagram shows the CMT2300A integrated circuit connected to an RF switch IC (U2 AS179) and other external components, including capacitors (C1-C22), inductors (L1-L8), a crystal oscillator (Y1), resistors (R1-R2), and RF connectors. It depicts a more complex RF front-end configuration utilizing an external switch.

Bill of Materials (RF Switch Type)

Table 15 lists the components for the RF Switch Type configuration.

Component	Description	434 MHz (+20 dBm)	868/915 MHz (+20 dBm)	Unit	Supplier
C1	±5%, 0402 NP0, 50 V	15	15	pF
C2	±5%, 0402 NP0, 50 V	10	3.9	pF
C3	±5%, 0402 NP0, 50 V	8.2	2.7	pF
C4	±5%, 0402 NP0, 50 V	8.2	2.7	pF
C5	±5%, 0402 NP0, 50 V	18 nH	220	pF
C6	±5%, 0402 NP0, 50 V	4.7	2	pF
C7	±5%, 0402 NP0, 50 V	4.7	2	pF
C8	±5%, 0402 NP0, 50 V	220	220	uF
C9	±5%, 0402 NP0, 50 V	220	220	pF
C10	±5%, 0402 NP0, 50 V	0.1		uF
C11	±5%, 0402 NP0, 50 V	0.1		uF
C12	±5%, 0402 NP0, 50 V	470		pF
C13	±5%, 0402 NP0, 50 V	2200		pF
C14	±5%, 0402 NP0, 50 V	4.7		uF
C15	±5%, 0402 NP0, 50 V	24	24	pF
C16	±5%, 0402 NP0, 50 V	24	24	pF
C17	±5%, 0402 NP0, 50 V	10	10	pF
C18	±5%, 0402 NP0, 50 V	10	10	pF
C19	±5%, 0402 NP0, 50 V	27		pF
C20	±5%, 0402 NP0, 50 V	27		pF
C21	±5%, 0402 NP0, 50 V	27		pF
C22	±5%, 0402 NP0, 50 V	27		pF
L1	±5%, 0603叠层贴片电感	180	100	nH	Sunlord SDCL
L2	±5%, 0402叠层贴片电感	27	6.8	nH	Sunlord SDCL
L3	±5%, 0402叠层贴片电感	18	12	nH	Sunlord SDCL
L4	±5%, 0402叠层贴片电感	33	22	nH	Sunlord SDCL
L5	±5%, 0402叠层贴片电感	15	10	nH	Sunlord SDCL
L6	±5%, 0402叠层贴片电感	27	12	nH	Sunlord SDCL
L7	±5%, 0402叠层贴片电感	27	12	nH	Sunlord SDCL
L8	±5%, 0402叠层贴片电感	68	18	nH	Sunlord SDCL
Y1	±10 ppm, SMD32*25 mm	26		MHz	EPSON
U1	CMT2300A,Ultra-Low Power Sub-1GHz RF Transceiver	-	-	-	-	CMOSTEK
U2	AS179, PHEMT GaAs IC SPDT Switch	-	-	-	-	SKYWORKS
R1	±5%, 0402	2.2		kΩ
R2	±5%, 0402	2.2		kΩ

Functional Description

The CMT2300A is a high-performance, ultra-low power RF transceiver supporting OOK, (G)FSK, and (G)MSK modulation for applications from 140 to 1020 MHz.

Figure 4. System Block Diagram

The system block diagram illustrates the main functional blocks of the CMT2300A, including the Radio Controller, MODEM, Packet Handler, EEPROM, SPI/FIFO Interface, LNA, Mixer, IFFilter, Limiter, PLL, PA, ADC, and RSSI. It shows signal paths for both receive (RX) and transmit (TX) operations, along with control and power signals like VDD, GND, SCLK, SDA, CSB, FCSB, and GPIOs.

Transmitter

The CMT2300A transmitter is a direct-synthesis transmitter. It uses a low-noise fractional-N frequency synthesizer for carrier generation. The output power can be configured from -20 dBm to +20 dBm in 1 dB steps via registers. A built-in PA ramping mechanism minimizes transient spectral components during rapid power changes.

Receiver

The receiver features a high-performance, ultra-low power, low-IF architecture supporting OOK and FSK modulation. It includes an LNA, quadrature mixer, IF filter, limiter, and digital demodulator for I/Q signal processing. The RSSI is converted to an 8-bit digital signal. The receiver can operate in Direct or Packet modes.

Auxiliary Modules

Crystal Oscillator

The crystal oscillator provides the reference clock for the PLL and system clock for digital modules. It requires an external crystal and load capacitors (C9, C10) to achieve accurate oscillation at 26 MHz.

Sleep Timer

An integrated 32 kHz low-power oscillator (LPOSC) drives the sleep timer. This feature allows the chip to wake up periodically, enabling duty-cycled operation for power saving. The sleep duration is configurable.

Low Voltage Detection

The chip includes a low voltage detection (LBD) function. If the supply voltage drops below a preset threshold, the chip can enter a low power state and await an MCU command via SPI to resume operation.

Received Signal Strength Indicator (RSSI)

The RSSI module measures the signal strength in the tuned channel. It provides an 8-bit digital output representing the signal level, which can be read via registers.

Phase Jump Detector (PJD)

PJD is used during FSK demodulation to distinguish between noise and valid signals by counting phase transitions. The number of transitions to detect is configurable.

Figure 5. PJD Signal Diagram

This diagram illustrates signal transitions over time, showing how phase jumps are detected. It depicts a sequence of symbols and highlights the concept of phase transitions.

Fast Manual Frequency Hopping

For multi-channel applications, users can configure frequency hopping using dedicated registers (FH_OFFSET and FH_CHANNEL) without needing to reconfigure the entire frequency synthesizer each time.

Chip Operation

SPI Interface

The CMT2300A communicates with an MCU via a 4-wire SPI interface. CSB and FCSB are active-low chip select signals for registers and FIFO, respectively. SCLK is the serial clock. Data is transmitted MSB first.

Figure 6. SPI Read Register Timing Diagram

This diagram shows the timing sequence for reading data from the CMT2300A's registers via the SPI interface, detailing the roles of CSB, FCSB, SCLK, and SDIO signals.

Figure 7. SPI Write Register Timing Diagram

This diagram illustrates the timing sequence for writing data to the CMT2300A's registers via the SPI interface, detailing the roles of CSB, FCSB, SCLK, and SDIO signals.

FIFO

The FIFO buffer is used to store received data (Rx) or data to be transmitted (Tx). It can be configured as separate 32-byte Rx and Tx FIFOs or merged into a single 64-byte FIFO. FIFO operations are controlled via SPI.

Figure 8. SPI Read FIFO Timing Diagram

This diagram shows the timing sequence for reading data from the CMT2300A's FIFO buffer via the SPI interface.

Figure 9. SPI Write FIFO Timing Diagram

This diagram illustrates the timing sequence for writing data to the CMT2300A's FIFO buffer via the SPI interface.

Operating States, Timing, and Power Consumption

Power-up Sequence

Upon power-on, the chip goes through a power-up sequence including POR release, crystal stabilization, and block calibrations before entering the SLEEP state. The sequence is illustrated in Figure 12.

Figure 12. Power-up Sequence Diagram

This diagram illustrates the sequence of events from power-on to the chip entering the SLEEP state, including POR release, XTAL stabilization, block calibrations, and customer initialization readiness.

Operating States

The CMT2300A has seven operating states: IDLE, SLEEP, STBY, RFS, RX, TFS, and TX. The SLEEP state offers the lowest power consumption. The STBY state allows FIFO operation and shorter transition times to active states. RFS and TFS are intermediate states for RX and TX transitions, respectively. RX and TX are the active receive and transmit states.

Figure 13. State Transition Diagram

This diagram visually represents the seven operating states (IDLE, SLEEP, STBY, RFS, RX, TFS, TX) and the possible transitions between them, triggered by specific commands.

GPIO and Interrupts

The CMT2300A features three configurable GPIO pins and two interrupt outputs. These can be configured for various functions, including data I/O, interrupts, and clock outputs.

Pin No.	Name	I/O	Function
16	GPIO1	IO	Configurable as: DOUT/DIN, INT1, INT2, DCLK (TX/RX), RF_SWT
15	GPIO2	IO	Configurable as: INT1, INT2, DOUT/DIN, DCLK (TX/RX), RF_SWT
8	GPIO3	IO	Configurable as: CLKO, DOUT/DIN, INT2, DCLK (TX/RX)

Interrupt mapping details are provided in Table 18 and Figure 14.

Data Packet and Packet Handler

Data Packet Format

The CMT2300A supports flexible packet formats, including variable length (length before or after Node ID) and fixed length packets. These formats include Preamble, Sync Word, Node ID, Length, Data, and CRC fields.

Figure 15. Variable Packet Format (Length Before Node ID)

Diagram showing packet structure with Length field preceding Node ID, including Preamble, Sync Word, Length, Node ID, Data, and CRC.

Figure 16. Variable Packet Format (Length After Node ID)

Diagram showing packet structure with Length field following Node ID, including Preamble, Sync Word, Node ID, Length, Data, and CRC.

Figure 17. Fixed Packet Format

Diagram showing the structure of a fixed-length data packet, including Preamble, Sync Word, Node ID, Data, and CRC.

Data Modes

The CMT2300A supports two data modes for MCU interaction:

Direct Mode: Supports only preamble and sync word detection; FIFO is not used.
Packet Mode: Supports all packet format configurations and utilizes the FIFO buffer.

Figure 18. Direct Mode Data Path Diagram

Illustrates data flow for Direct Mode RX and TX, showing data routing via DOUT and DIN.

Figure 19. Packet Mode Data Path Diagram

Illustrates data flow for Packet Mode, involving the Packet Handler and FIFO.

Low Power Operation

Duty Cycle Operation Mode

The CMT2300A allows for power saving through duty-cycled Tx and Rx operations. Various modes are available for Rx (5 types) and Tx (3 types) to optimize power consumption based on application needs.

Ultra-Low Power (SLP) Receive Mode

This mode helps achieve ultra-low power consumption during receive operations. The core principle is to minimize Rx time when no signal is present and appropriately extend it when a signal is detected. The device supports a basic scheme and 13 extended low-power solutions.

Figure 20. Basic Low Power Transmit/Receive Scheme Diagram

Illustrates a fundamental approach to low-power operation, showing periodic TX bursts and RX listening periods within an IDLE state, interspersed with SLEEP periods.

Table 19 details various low-power receive modes.

User Registers

The CMT2300A features a comprehensive set of user-configurable registers organized into banks for various functions. These include System Bank, Frequency Bank, Data Rate Bank, Baseband Bank, TX Bank, and Control Banks. Refer to AN146 for detailed register usage.

CMT Bank (0x00-0x0B)

Contains internal parameters exported from RFPDK. Not recommended for direct modification.

System Bank (0x0C-0x17)

Configures parameters related to timers, Duty Cycle, and low-power modes.

Frequency Bank (0x18-0x1F)

Stores registers for frequency tuning.

Data Rate Bank (0x20-0x37)

Contains registers related to data rates, FSK, and OOK configurations.

Baseband Bank (0x38-0x54)

Stores registers for packet format settings, including preamble, sync word, Node ID, length, data whitening, FEC, CRC, and Manchester encoding.

Transmit Bank (0x55-0x5F)

Contains registers for transmit power, frequency deviation, and related settings.

Control 1 Bank (0x60-0x6A)

Includes registers for enabling and configuring various functional modules, such as chip mode, GPIO selection, interrupt control, and FIFO settings.

Control 2 Bank (0x6B-0x71)

Contains registers related to status flags, RSSI, and LBD. Note: These registers are not accessible in SLEEP state.

Ordering Information

Table 29 provides ordering details for the CMT2300A.

Model	Description	Package	Packaging Option	Operating Conditions	Min Order Quantity
CMT2300A-EQR^[1]	CMT2300A, Ultra-Low Power Sub-1GHz RF Transceiver	QFN16 (3x3)	Tape & Reel	1.8 to 3.6V, -40 to 85°C	5,000

Notes:
[1] 'E' denotes Extended Industrial Grade with a temperature range of -40 to +85°C. 'Q' denotes the QFN16 package type. 'R' denotes Tape & Reel packaging, with a Minimum Order Quantity (MOQ) of 5,000 pieces.

For more product information, visit www.cmostek.com. For purchasing or pricing inquiries, contact sales@cmostek.com or your local sales representative.

Package Information

The CMT2300A is supplied in a 16-pin QFN (3x3) package. Figure 21 shows the package outline, and Table 30 provides the package dimensions.

Figure 21. 16-Pin QFN 3x3 Package Diagram

Diagrams showing the top, bottom, and side views of the 16-pin QFN 3x3 package, with dimensions labeled.

Symbol	Dimension (mm) - Min	Dimension (mm) - Max
A	0.7	0.8
A1		0.05
b	0.18	0.30
c	0.18	0.25
D	2.90	3.10
D2	1.55	1.75
e	0.50 BSC
E	2.90	3.10
E2	1.55	1.75
L	0.35	0.45

Top Mark

Figure 22 shows the top mark details for the CMT2300A package, and Table 31 explains the markings.

Figure 22. CMT2300A Top Mark Diagram

Diagram showing the top marking of the CMT2300A package: '300A' on the first line, pin 1 indicator, and 'YWW' for date code.

Marking Type	Description
Laser Marking
Pin 1 Indicator	Circle diameter = 0.3 mm
Font Size	0.5 mm, right-aligned
Line 1 Marking	300A, representing model CMT2300A
Line 2 Marking	Internal tracking code (①②③④)
Line 3 Marking	Date code: Y (last digit of year), WW (work week)

Document Number	Document Title	Description
AN141	CMT2300A Schematic and PCB Layout Design Guideline	Provides guidelines for CMT2300A PCB layout, RF matching network design, and other related design considerations.
AN142	CMT2300A Configuration Guideline	Introduces how to configure the CMT2300A using RFPDK.
AN143	CMT2300A Dual-Way RF Link Development Kits User's Guide	User guide for CMT2300A development kits, including RF-EB evaluation boards, EM modules, USB Programmer, and RFPDK.
AN146	CMT2300A User Manual	Detailed functional usage and configuration guide for the CMT2300A.

Document Revision History

Table 33 details the revision history of this document.

Version	Chapter/Section	Change Description	Date
Preliminary	All	Preliminary version for internal verification	2015-06-09
Preliminary 0.2	5.14.1	Update 1st paragraph	2015-06-10
Preliminary 0.2	5.14.2	Update Table 34	2015-06-10
0.6	All	Split Chapter 5 and 6 from Chapter 4	2015-08-06
0.7	All	Initial release version for mass production chip	2017-02-27

Contact Information

CMOSTEK Microelectronics Co., Ltd. Shenzhen Branch

Address: Room 203, Honghai Building, Qianhai Road, Nanshan District, Shenzhen, Guangdong Province, China

Postal Code: 518000

Phone: +86-755-83235017

Fax: +86-755-82761326

Sales: sales@cmostek.com

Technical Support: support@cmostek.com

Website: www.cmostek.com

	CMOSTEK CMT2300A: Ultra-low Power Sub-1GHz RF Transceiver Datasheet Datasheet detailing the CMOSTEK CMT2300A, an ultra-low power, high-performance Sub-1GHz RF transceiver supporting OOK, FSK, and GFSK modulation. Covers features, electrical specifications, applications, and operational modes for wireless systems.
	CMOSTEK CMT2300A Ultra-low Power Sub-1GHz RF Transceiver Datasheet Datasheet for the CMOSTEK CMT2300A, an ultra-low power, high-performance Sub-1GHz RF transceiver supporting OOK, FSK, and GFSK modulation for various wireless applications. Details features, specifications, applications, and ordering information.
	CMT2300A: Ultra-low Power Sub-1GHz RF Transceiver Datasheet Detailed datasheet for the CMOSTEK CMT2300A, an ultra-low power, high-performance Sub-1GHz RF transceiver supporting OOK, FSK, and GMSK modulations. Features include wide frequency range, high sensitivity, and low power consumption for applications like meter reading, home security, and sensor networks.
	CMOSTEK CMT2300A: 超低功耗 Sub-1GHz 射频收发器数据手册 CMOSTEK CMT2300A是一款高性能、超低功耗的Sub-1GHz射频收发器，支持OOK、(G)FSK和(G)MSK调制，频率范围127-1020MHz。提供详细技术规格、特性、应用和封装信息。
	CMT2300A: Ultra Low Power Sub-1GHz RF Transceiver Datasheet Detailed datasheet for the CMOSTEK CMT2300A, an ultra-low power, high-performance Sub-1GHz RF transceiver supporting OOK, GFSK, and MSK modulation for applications like smart metering, home automation, and industrial control.
	CMOSTEK CMT2300A: Ultra-low Power Sub-1GHz RF Transceiver Datasheet Detailed datasheet for the CMOSTEK CMT2300A, an ultra-low power Sub-1GHz RF transceiver supporting OOK, FSK, and GFSK modulation. Features include wide frequency range, high sensitivity, and low power consumption for various wireless applications.
	CMT2300A Ultra-low Power Sub-1GHz RF Transceiver Datasheet Detailed datasheet for the CMOSTEK CMT2300A, an ultra-low power, high-performance Sub-1GHz RF transceiver supporting OOK, FSK, and MSK modulation. Features include high sensitivity, low power consumption, and wide frequency range for applications like IoT, home automation, and industrial monitoring.
	CMT2300A Ultra-low Power Sub-1GHz RF Transceiver Datasheet Detailed datasheet for the CMOSTEK CMT2300A, an ultra-low power, high-performance Sub-1GHz RF transceiver supporting OOK, FSK, and MSK modulation. Features include wide frequency range, high sensitivity, and low power consumption for applications like home security, meter reading, and industrial monitoring.