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CMT2157AW

Encode IC

CMT2157A.png


Descriptions


The CMT2157A is a true single-chip, highly flexible, high performance, (G)FSK/OOK RF transmitter with embedded data encoder ideally for 240 to 960 MHz wireless applications. The device integrates a data encoder that is not only compatible with the most common used encoding format of 1527 and 2262, but also a more efficient, flexible and powerful format of 1920 designed by CMOSTEK. Up to 7 configurable push buttons are supported in multiple button modes. When pairing the device to CMOSTEK receiver, the synchronization ID can be programmed into both of the transmitter and receiver during the manufacturing phase, or studied by the receiver from the transmitter remotely by end customers. An embedded EEPROM allows the RF and encoder parameters to be programmed into the chip using the CMOSTEK USB

Programmer and the RFPDK. Alternatively, in stock product of 868.35 MHz is available for immediate demands without the need of EEPROM programming. The CMT2157A is part of the CMOSTEK NextGenRFTM family, together with CMT225x series receivers, they enable ultra low cost, low power consumption RF links.


Features


  • Embedded EEPROM

  • Very Easy Development with RFPDK

  • All Features Programmable

  • Frequency Range: 240 to 960 MHz

  • FSK, GFSK and OOK Modulation

  • Symbol Rate:

    * 0.5 to 100 ksps (FSK/GFSK)

    * 0.5 to 40 ksps (OOK)

  • Deviation: 1.0 to 200 kHz

  • Output Power: -10 to +13 dBm

  • Sleep Current: < 20 nA

  • Stand-Alone, No External MCU Control Required

  • Embedded 1920, 1527 and 2262 Data Encoder

  • Up to 7 Configurable Data Pins for Push Buttons

  • LED Indicator for Low Battery Detection and Transmission

  • Sync ID Auto-Study with CMOSTEK Receiver

  • FCC / ETSI Compliant

  • RoHS Compliant

  • 14-pin SOP Package


Applications


  • Low-Cost Consumer Electronics Applications

  • Home and Building Automation

  • Remote Fan Controllers

  • Infrared Transmitter Replacements

  • Industrial Monitoring and Controls

  • Remote Lighting Control

  • Wireless Alarm and Security Systems

  • Remote Keyless Entry (RKE)



Design documents and resources
DEMO & Tools:
CMOSTEK WriterConfig V1.3.0 for Writer V3.1
2018-12-04
CMOSTEK WriterConfig V1.4.0 for Writer V3.1
2018-11-30
RFDK_PIC16_LCD V1.1hardware(131029)
2018-11-22
AN2004-RF67 communication example
2018-12-03
RFMXXB_Tools
2018-12-06
RFXXB_TOOLS
2018-12-04
HopeRF_RFDK_RFMxx_DEMO_V2.1_operation_manual
2018-11-22
HopeRF_RF-EVB_manual_V1.21
2018-11-22
AN0002-Hopeduino platform construction guideline
2018-11-20
AN1004-CMT2157A & CMT2219A communication example(1920 coding)
2018-12-03
AN112 CMT2150A Configuration Guideline
2018-12-03
AN140-CMOSTEK User Manual_V1.3
2018-12-05
AN1001-CMT211xA & CMT221xA communication example
2018-12-03
Design Guides:
AN0002-Hopeduino platform construction guideline
2018-11-22
AN166-CMT2219B RSSI User Guide_EN
2018-12-05
AN121 CMT21xx Handheld Device Design Guide-EN-V0.6-160217
2019-08-19
AN100 CMT211x5x8x Transmitter Chip Schematic and PCB Layout Design Guide-EN-V0.81-150916
2019-11-08
Certification & Test Reports:
RF IC Reach
2020-05-15
RF IC ROHS 2.0
2020-05-18
Associated products
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