CMT2257A

The CMT2257A is a true single-chip, ultra low power and high performance device that consists of an OOK/(G)FSK RF receiver, a data decoder and 4 data output pins for various 300 to 960 MHz wireless applications.

Description

The CMT2257A is a true single-chip, ultra low power and high performance device that consists of an OOK/(G)FSK RF receiver, a data decoder and 4 data output pins for various 300 to 960 MHz wireless applications. The device integrates a data decoder which is compatible with the most common used encoding format of 1527 and 2262, as well as a more flexible format of 1920 designed by CMOSTEK. The device delivers sensitivity up to -109 dBm (FSK, 9.6 ksps symbol rate, 868.35 MHz) while consuming only 5.7 mA current when it is always on. 

Features

  • Embedded EEPROM
    • Very Easy Development with RFPDK
    • All Features Programmable
  • 3-wire SPI Interface for EEPROM Programming
  • Frequency Range: 300 to 960 MHz
  • Symbol Rate: 0.1 to 100 ksps
  • Sensitivity: -109 dBm at 9.6 ksps, FSK, 868.35 MHz
  • Stand-Alone, No External MCU Control Required
  • Embedded 1920, 1527 and 2262 Data Decoder
  • 4 Data Outputs
  • Configurable Duty-Cycle Receive Mode
  • Low Power Consumption: 5.7 mA
  • Low Sleep Current
    • 60 nA When Sleep Timer Off
    • 440 nA When Sleep Timer On
  • ID Study, Factory Code Supported
  • RoHS Compliant
  • Available in QFN16( 3x3) and SOP16 Packages

Applications

  • Low-Cost Consumer Electronics Applications
  • Remote Control
  • Smart LED Control (On/Off Dimming)
  • Home Security and Alarm
  • Garage and Gate Openers
  • Home and Building Automation
  • Industrial Monitoring and Controls
  • Sensor Networks
  • Health Monitors
  • Remote Keyless Entry (RKE)

Description Version Updated Size
CMT2257A-datashort 1.0 2015/05/22 195.34 KB
Description Version Updated Size
AN110 CMT221x-5x Schematic and PCB Layout Design Guideline-CN 0.9 2016/03/08 961.12 KB
AN118 CMT2250A Configuration Guideline 1.1 2015/05/22 1.07 MB
Description Version Updated Size

Software Downloads

Similar Devices
 Part Number Modulation  Frequency 
(MHz)
 Symbol Rate 
(kbps)
 Sensitivity
(dBm)
Remark
OOK 300 - 480 40 -113
OOK 315 / 433 3.4 -108
OOK / (G) FSK 300 - 480 100 -111
OOK 300 - 960 40 -113
OOK / (G) FSK 300 - 960 100 -109
OOK 300 - 480 40 -114 w/ Decoder
OOK 300 - 480 40 -114 w/ PWM Decoder
Paired Devices
 Part Number Modulation  Frequency 
(MHz)
 Symbol Rate 
(kbps)
Output Power
(dBm)
Remark
OOK / (G) FSK 240 - 960 100 +13 w/ Encoder

Order Samples

CMOSTEK provides samples to qualified developers at no charge, please fill the form below to start the application.

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