CMT2157AW
CMT2157AW
240 – 960 MHz (G)FSK/OOK Stand-Alone Transmitter with Encoder
Features
Applications
Embedded EEPROM
Low-Cost Consumer Electronics Applications
Home and Building Automation
Remote Fan Controllers
Very Easy Development with RFPDK
All Features Programmable
Frequency Range: 240 to 960 MHz
FSK, GFSK and OOK Modulation
Symbol Rate:
Infrared Transmitter Replacements
Industrial Monitoring and Controls
Remote Lighting Control
0.5 to 100 ksps (FSK/GFSK)
0.5 to 40 ksps (OOK)
Wireless Alarm and Security Systems
Remote Keyless Entry (RKE)
Deviation: 1.0 to 200 kHz
Output Power: -10 to +13 dBm
Sleep Current: < 20 nA
Ordering Information
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
Part Number
Frequency
868.35 MHz
868.35 MHz
Package
T&R
MOQ
CMT2157AW-ESR
CMT2157AW-ESB
2,500 pcs
1,000 pcs
Tube
More Ordering Info: See Page 26
RoHS Compliant
14-pin SOP Package
Descriptions
The CMT2157AW 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
CMT2157AW is part of the CMOSTEK NextGenRFTM
family, together with CMT225x series receivers, they
enable ultra low cost, low power consumption RF links.
SOP14
LED
VDD
GND
RFO
K7
1
2
3
4
5
6
7
14
13
12
11
10
9
XTAL
CLK
DATA
K1
K2
K3
K6
8
K4
K5
CMT2157AW
Rev 0.8 | Page 1/31
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