Descriptions:

CMT2218B is an ultra-low power, high performance, OOK (G) FSK RF Receiver suitable for a variety of 140 to 1020 MHz wireless applications. It is part of the CMOSTEK NextGenRFTM RF product line. The product line contains the complete transmitters, receivers and transceivers.The high integration of CMT2218B simplifies the peripheral materials required in the system design. Up to -121 dBm sensitivity optimizes the performance of the application. It supports the“antenna-in, data-out”direct mode. In addition, CMT2218B also supports GPIO and interrupt configuration, Duty-Cycle operation mode, channel sensing, high-precision RSSI, power-on reset, quelchand etc. The features make the application design more flexible and differentiated. CMT2218B operates from 1.8 V to 3.6 V. Only 8.5 mA current is consumed when the sensitivity is

-121 dBm, SuperLow Power mode can further reduce the chip power consumption.

Features:

• Frequency range: 127 ~1020MHz

• Demodulation: (G)FSK & (G)MSK

• Data rate: 0.5 ~ 300 kbps

• Sensitivity: -121 dBm 2.0 kbps, FRF = 433.92 MHz

                    -111 dBm 50 kbps, FRF = 433.92

• Voltage range: MHz 1.8 ~3.6 V

• Rx current: 8.5 mA @ 433.92 MHz, FSK (High power mode)

                     7.2 mA @ 433.92 MHz, FSK (Low power mode)

• Super Low Power receive mode

• Sleep current: 300 nA, Duty Cycle = OFF

                          800 nA, Duty Cycle = ON

• Receiver Features:

      * Fast and stable automatic frequency control (AFC)

      * 3 types of clock data recovery system (CDR)

      * Fast and accurate signal detection (PJD)

• 3-wire SPI interface for EEPROM burning

• Direct mode supported

• Stand-alone working mode

• Adjustable data out 0 and 1 interval

Applications:

• Automatic meter reading

• Home security and building automation

• ISM band data communication

• Industrial monitoring and control

• Remote control and security system

• Remote key entry

• Wireless sensor node

• Tag reader