Intergrated circuit ultra-low power OOK RF single-chip transmitter CMT2157LW

Basic Info

Product Description

CMT2157LW

315/433/868/915 MHz Single-chip OOK Transmitter with Encoder

Description

As a highly flexible, ultra-low power and encoder-equipped OOK RF single-chip transmitter, the CMT2150L/CMT2157L is ideal for wireless applications with the frequency range of 240-960 MHz. The chip is fully compatible with the most commonly used encoding formats such as 527 and 1527. It supports 3 independent keys or up to 6 combination keys with no need for diode isolation between combined keys. In addition, the key value of each key can be configured separately. When shipped from the factory, the chip applies the 1527 encoding mode with incremental ID sequence by default. The

CMT2150L is configured to operate at 433.92 MHz and the CMT2157L at 868.35 MHz. Users can operate the visual UI interface RFPDK provided by CMOSTEK and the matching

programming tool to configure the customized parameters into the EEPROM inside the chip to fulfill differentiated applications. As part of the CMOSTEK NextGenRFTM product

family, the CMT2150L/ CMT2157L, cooperating with the CMT221x transmission chips, can help users fulfill low cost, low power and high performance applications excellently.

Features

• Operating frequency for CMT2150L: 240 to 480 MHz

• Operating frequency for CMT2157L: 240 to 960 MHz

• Built-in EEPROM

• Easy development with RFPDK

• All features configurable

• Data rate: 0.5 - 40 kbps

• Output power: 0 - +13 dBm

• Operating current: 7.5 mA @ +10 dBm

• Sleep current: < 20 nA

• Single chip operation with no need for external MCU control

• Support for 527, 1527 packet format

• 3 independent pins supporting up to 6 press-keys with key value configurable

• Transmission indication LED

• Compliance with FCC/ETSI standards

• RoHS compliance

• SOP8 packaging

Application

• Low-cost consumer electronics applications

• Automatic control of homes and buildings

• Fan remote control

• IR transmitter replacement

• Industrial monitoring and control

• Wireless lighting control system

• Wireless alarm and security system

• Remote Keyless Entry (RKE)