iotTech ITM1188-F-Xc 2.4GHz 1T1R USB Wi-Fi Module
Specifications
- Product: ITM1188-F-XC
- Standard: IEEE 802.11 b/g/n 2.4GHz 1T1R USB Wi-Fi Module
- Manufacturer: iotTech Corporation, Taiwan
- Board Size: 12.2mm x 13.0mm
- Module Thickness: 1.7mm
- Max Throughput: 150Mbps
- Chipset: Realtek RTL8188FTV
Product Usage Instructions
General Description
The ITM1188-F-XC WiFi module is designed for use in tablet PCs, ultra-books, mobile devices, and consumer products. It provides a USB interface for easy connection to the host processor. The module utilizes 1×1 802.11n b/g/n MIMO technology, offering a theoretical throughput of up to 150Mbps.
Features
- Operates at ISM frequency bands (2.4GHz)
- USB interface for Wi-Fi connectivity
- Supports IEEE standards: 802.11b/g/n/d/e/h/i
- Enterprise-level security with WPA/WPA2 certification
- 1 transmitter and 1 receiver supporting data rates up to 150Mbps
General Specification
- Operating Temperature: -20°C to +75°C
- Storage Temperature: -10°C to +75°C
Voltages
- Absolute Maximum Ratings:
- VIN (Input Supply Voltage): -0.3V to 3.6V
- Recommended Operating Ratings:
- Test conditions: At room temperature
- VIN: 3.15V to 3.45V
Crystal Specification
- Nominal Frequency: 40MHz
- Load Capacitance: 10pF
- Operating Temperature: -20°C to +75°C
FAQ
- Q: What are the recommended operating voltages for the ITM1188-F-XC module?
- A: The recommended operating voltage range is 3.15V to 3.45V.
General Description
The iotTech ITM 11881188-F-XC is a small size and low profile of WiFi module, board size is 12.2mm*1 13.0mm with module thickness of 1.7 mm. It can be easily manufactured on SMT process and highly suitable for tablet PC, ultra-book, mobile devices, and consumer products. It provides USB interface for WiFi to connect with host processor processor. The WiFi throughput can go up to 150Mbps in theory by using 1×1 802.11n b/g/n MIMO technology technology.
ITM 11881188-F-XC uses Realtek RTL8 188FTV, a highly integrated WiFi single chip based on advanced CMOS process. RTL 8188FTV integrates whole 2.4GHz 1T1R WiFi function blocks into a chip, such as USB, MAC, BB, AFE, RFE, PA, EEPROM and LDO/SWR, except fewer passive components remained on PCB.
ITM1188-F-XC block diagram is shown as below.
Features
- Operate at ISM frequency bands (2.4GHz)
- USB for Wi-Fi
- IEEE standards support: IEEE 802.11b, IEEE 802.11g, IEEE 802.11n, IEEE 802.11d, IEEE 802.11e, IEEE 802.11h, IEEE 802.11i
- Enterprise level security which can apply WPA/WPA2 certification for WiFi.
- WiFi 1 transmitter and 1 receiver allow data rates supporting up to 150 Mbps downstream and 150 Mbps upstream PHY rates
The general functional block diagram of RTL8188FTV chipset is shown as below.
General Specification
| Operating temperature | -10°C to 70°C |
| Storage temperature | -40°C to 85°C |
Voltages
Absolute Maximum Ratings
| Symbol | Description | Min. | Max. | Unit |
| VIN | Input supply Voltage | -0.3 | 3.6 | V |
Recommended Operating Ratings
| Test conditions: At room temperature | ||||
| Symbol | Min. | Typ. | Max. | Unit |
| VIN | 3.15 | 3.3 | 3.45 | V |
| Test conditions: At operating temperature 0°C ~70°C | ||||
| Symbol | Min. | Typ. | Max. | Unit |
| VIN | 3.15 | 3.3 | 3.45 | V |
Crystal Specification
| Parameters | Conditions | Min. | Typ. | Max. | Unit |
| Nominal Frequency | 40 | MHz | |||
| Load Capacitance | 10 | pF | |||
| Operating Temperature | -20 | +75 | ℃ | ||
| Frequency Tolerance | 25℃±3℃ | -10 | +10 | ppm | |
| Frequency Stability | Operating Temp. Range | -10 | +10 | ppm | |
| Drive Level | 100 | uW | |||
| ESR | 40 | ohm |
Wi-Fi RF Specification (RX)
| Parameters | Conditions | Min. | Typ. | Max. | Unit |
| Frequency Range | 2412 | 2462 | MHz | ||
|
RX Sensitivity 11b @ 8% PER |
– 1Mbps | -91 | -83 | dBm | |
| – 2Mbps | -89 | -80 | dBm | ||
| – 5.5Mbps | -87 | -79 | dBm | ||
| – 11Mbps | -85 | -76 | dBm | ||
|
RX Sensitivity 11g @ 10% PER |
– 6Mbps | -87 | -82 | dBm | |
| – 9Mbps | -86 | -81 | dBm | ||
| – 12Mbps | -84 | -79 | dBm | ||
| – 18Mbps | -82 | -77 | dBm | ||
| – 24Mbps | -79 | -74 | dBm | ||
| – 36Mbps | -75 | -70 | dBm | ||
| – 48Mbps | -71 | -66 | dBm | ||
| – 54Mbps | -70 | -65 | dBm | ||
|
Receive Sensitivity (11n,20MHz) @10% PER |
– MCS0 | -87 | -82 | dBm | |
| – MCS=1 | -84 | -79 | dBm | ||
| – MCS=2 | -82 | -77 | dBm | ||
| – MCS=3 | -79 | -74 | dBm | ||
| – MCS=4 | -75 | -70 | dBm | ||
| – MCS=5 | -71 | -66 | dBm | ||
| – MCS=6 | -70 | -65 | dBm | ||
| – MCS=7 | -69 | -64 | dBm | ||
|
Receive Sensitivity (11n,40MHz) @10% PER |
– MCS0 | -84 | -79 | dBm | |
| – MCS=1 | -81 | -76 | dBm | ||
| – MCS=2 | -79 | -74 | dBm | ||
| – MCS=3 | -76 | -71 | dBm | ||
| – MCS=4 | -72 | -67 | dBm | ||
| – MCS=5 | -68 | -63 | dBm | ||
| – MCS=6 | -67 | -62 | dBm | ||
| – MCS=7 | -66 | -61 | dBm | ||
|
Maximum Receive Level |
802.11b | -20 | 0 | dBm | |
| 802.11g | -20 | 0 | dBm | ||
| 802.11n | -20 | 0 | dBm |
Wi-Fi RF Specification (TX)
| Parameters | Conditions | Min. | Typ. | Max. | Unit |
| Frequency Range | 2412 | 2462 | MHz | ||
|
Output Power |
802.11b | 15.26 | dBm | ||
| 802.11g-6Mbps | 18.52 | dBm | |||
| 802.11n-MCS0 | 17.46 | dBm | |||
|
@EVM |
802.11b / 11Mbps | — | -20 | -10 | dB |
| 802.11g / 54Mbps | — | -29 | -25 | dB | |
| 802.11n / MCS7 | — | -30 | -28 | dB |
Power Consumption
- TX Mode: (Continuous mode) 240mA (MCS7/BW40/13dBm)
- RX Mode: (Continuous mode) 140mA (MCS7/BW40/ BW40/-60dBm)
- Associated Idle power saving with DTIM= 3 2.1mA
- Unassociated Idle: 0.1mA
- RF disable Mode: 0.1mA
(Typical by using LDO)
Antenna
This module has been approved to operate with the antenna type listed below, with the maximum permissible gain indicated.
| Part Number | Frequency Band | Antenna Type | Gain(dBi) |
| Hantech HT870001 | 2400~2500MHz | PIFA | 3.0 |
Return Loss:
2400MHz:
2450MHz:
2500MHz:
Gain/Efficiency:
Pin Assignments
PCB Pin Outline (13.0mmx12.2mmx1.8mm)
< TOP VIEW >
Pin Definition
PIN Assignment
| Pin # | Name | Description |
| 1 | GND | Ground |
| 2 | NC (RFO) | Floating (RF I/O pin, not used for this model) |
| 3 | NC | Floating (NC) |
| 4 | NC | Floating (NC) |
| 5 | VIN | Main power voltage source input |
| 6 | USB_D- | USB_D- |
| 7 | USB_D+ | USB_D+ |
| 8 | GND | Ground |
| 9 | NC | Floating (NC) if not used |
| 10 | NC (WL_EN) | Floating (WLAN enable/disable) if not used |
| 11 | NC | Floating (NC) if not used |
| 12 | NC | Floating (NC) if not used |
| 13 | NC (HOST_WAKE_WL) | Floating (Host wake up WLAN device) if not used |
| 14 | NC (WL_WAKE_HOST) | Floating (WLAN device wake up host) if not used |
| Total | 14PINS | 13.0*12.2*1.8mm Package |
PCB Layout
Dimensions
Layout Recommendation
(Unit: mm)
< TOP VIEW >
Reference Design
- Pin 10/13/14 are optional and should not be connected or grounded if not used.
Micro Coaxial Connector on I TM1188FTM1188F-XC for External Antenna:
Software Introduction
Installation of software driver is required before applying ITM1188 ITM1188-F-XC in Windows platforms.
Here shows how to install software on Windows 10 10&7 64 -bit platform.
- Download the Realtek driver update from the Realtek website, or Microsoft Update
- Press Windows + X > Device Manager
- Head to the Network adapter > double click & expand it > look for 802.11 n USB Wireless LANcard > right-click Update driver.
- Click Search automatically for drivers to update 802.11 N driver.
- If you see the message below, click Search for updated drivers on Windows update.
- Check for Windows updates and install them if available.
- If the latest version is installed, click View options updates
- Double click Driver Update > check for Realtek update > Download and install.
- Restart the system to finish installing Realtek 802.11 n WLAN adapter driver Windows 1064 bit. Now check if you can connect to the network.
FCC STATEMENT
Compliance with
- List of applicable FCC rules CFR 47 FCC PART 15 SUBPART C has been investigated. It is applicable to the modular transmitter
Specific operational use conditions
This module is stand stand-alone modular. If the end product will involve Multiple simultaneous transmitting condition or different operation operational conditions (example, uses another antenna) for a stand stand-alone modular transmitter in a host, host manufacturer have to consult with module manufacturer for the installation method in end system.
Limited module procedures
- This module is single-modular.
- Not applicable.
Trace antenna designs
- Not applicable.
RF exposure considerations
This modular transmitter should be used in mobile conditions and 20cm from a person’s body, the host product manufacturer should be put this information in the end end-product manual to the end users. If RF exposure statement and use conditions are not provided, then the host product manufacturer is required to take responsibility of the module through a change in FCC ID(new application)
Antennas
This radio transmitter FCC ID : 2AWP5WM 1188FXC and has been approved by the Federal Communications Commission to operate with the antenna types listed below, with the maximum permissible gain indicated. Antenna types not included in this list that have a gain greater than the maximum gain indicated for any type listed are strictly prohibited for use with this device.
| Manufacturer | Part No. | Antenna Type | Maximum antenna gain |
| Hantech | HT870001 | Flexible PCB PIFA antenna | 3.44 dBi @ 2450 MHz |
Label and compliance information
- The final end product must be labeled in a visible area with the following” Contains FCC ID: 2AWP5WM 1188FXC1188FXC.
Information on test modes and additional testing requirements
Host manufacturer which install this modular with limit modular approval should perform the test of radiated emission and spurious emission according to FCC part 15 :15.212 requirement, only if the test result comply with FCC part 15.212 requirement, then the host can be sold legally. When testing host product, the host manufacturer should follow FCC KDB Publication 996369 D01 Module Integration Guide for testing the host products. The host manufacturer may operate their product during the measurements.
Additional testing, Part 15 Subpart B disclaimer
- Host manufacturer is responsible for compliance of the host system with module installed with all other applicable requirements for the system such as Part 15 B.
Federal Communication Commission Interference Statement
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 of the following measures:
- Reorient or relocate the receiving antenna.
- Increase the separation between the equipment and the 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.
FCC Caution:
Any changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate this equipment.
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:
- This device may not cause harmful interference.
- This device must accept any interference received, including interference that may cause undesired operation.
IMPORTANT NOTE:
In the event that these conditions can not be met (for example certain laptop configurations or co-location with another transmitter), then the FCC authorization is no longer considered valid and the FCC ID can not be used on the final product. In these circumstances, the OEM integrator will be responsible for re-evaluating the end product (including the transmitter) and obtaining a separate FCC authorization.
End Product Labeling:
- The final end product must be labelled in a visible area with the following:
- 【Contains FCC ID: 2AWP5WM 1188FXC 】
Manual Information to the End User
The OEM integrator has to be aware not to provide information to the end user regarding how to install or remove this RF module in the user’s manual of the end product which integrates this module.
Revision History
| Date | Revision Content | Revised By | Version |
| 2024/08/23 | – Official released | Issac Chen | 1.0 |
iotTech Corporation, Taiwan
Documents / Resources
 |
iotTech ITM1188-F-Xc 2.4GHz 1T1R USB Wi-Fi Module [pdf] User Manual ITM1188-F-Xc 2.4GHz 1T1R USB Wi-Fi Module, ITM1188-F-Xc, 2.4GHz 1T1R USB Wi-Fi Module, 1T1R USB Wi-Fi Module, Wi-Fi Module, Module |
