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CMT2157AW-ESB: 产品描述240 â 960 MHz (G)FSK/OOK Stand-Alone Transmitter with Encoder; 文件大小797KB，共31页; 制造商ETC2

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CMT2157AW-ESB概述

240 â 960 MHz (G)FSK/OOK Stand-Alone Transmitter with Encoder

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CMT2157AW

240 – 960 MHz (G)FSK/OOK Stand-Alone Transmitter with Encoder

Features



Applications



Embedded EEPROM



Very Easy Development with RFPDK



All Features Programmable

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)



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

Part Number

CMT2157AW-ESR

CMT2157AW-ESB

Frequency

868.35 MHz

Package

T&R

Tube

MOQ

2,500 pcs

1,000 pcs

Ordering Information

More Ordering Info: See

Page 26

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

the

transmitter

and

receiver

during

the

GND

RFO

LED

VDD

SOP14

XTAL

CLK

DATA

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

EEPROM

programming.

The

CMT2157AW is part of the CMOSTEK NextGenRF

family, together with CMT225x series receivers, they

enable ultra low cost, low power consumption RF links.

CMT2157AW

Rev 0.8 | Page 1/31

www.hoperf.com

CMT2157AW

Table of Contents

1. Electrical Characteristics ............................................................................................................................................ 5

1.1 Recommended Operating Conditions ................................................................................................................... 5

1.2 Absolute Maximum Ratings................................................................................................................................... 5

1.3 Transmitter Specifications ..................................................................................................................................... 6

1.4 Crystal Oscillator ................................................................................................................................................... 7

2. Pin Descriptions .......................................................................................................................................................... 8

3. Typical Performance Characteristics ......................................................................................................................... 9

4. Typical Application Schematics ............................................................................................................................... 10

4.1 Low-Cost Application Schematic ......................................................................................................................... 10

4.2 FCC/ETSI Compliant Application Schematic....................................................................................................... 11

5. Functional Descriptions ............................................................................................................................................ 12

5.1 Overview ............................................................................................................................................................. 12

5.2 Modulation, Frequency, Deviation and Symbol Rate .......................................................................................... 12

5.3 Embedded EEPROM and RFPDK ...................................................................................................................... 13

5.4 Power Amplifier ................................................................................................................................................... 15

5.5 PA Ramping ........................................................................................................................................................ 15

5.6 Working States .................................................................................................................................................... 16

5.7 The Encoder........................................................................................................................................................ 17

5.7.1 1920 Packet Structure

............................................................................................................................................17

5.7.2 1527 Packet Structure

............................................................................................................................................18

5.7.3 2262 Packet Structure

............................................................................................................................................19

5.8 ID Study .............................................................................................................................................................. 20

5.9 Button Modes ...................................................................................................................................................... 21

5.9.1 Normal

......................................................................................................................................................................21

5.9.2 Matrix

........................................................................................................................................................................22

5.9.3 Toggle

.......................................................................................................................................................................23

5.9.4 PWM

.........................................................................................................................................................................23

5.10 LED Driving Capability ........................................................................................................................................ 24

5.11 Low Battery Detection (LBD) ............................................................................................................................... 24

5.12 Crystal Oscillator and RCLK................................................................................................................................ 24

6. Ordering Information ................................................................................................................................................. 26

7. Package Outline......................................................................................................................................................... 27

8. Top Marking ............................................................................................................................................................... 28

8.1 CMT2157AW Top Marking .................................................................................................................................. 28

9. Other Documentations .............................................................................................................................................. 29

10. Document Change List.............................................................................................................................................. 30

11. Contact Information .................................................................................................................................................. 31

Rev 0.8 | Page 4/31

www.hoperf.com

CMT2157AW-ESB相似产品对比

	CMT2157AW-ESB	CMT2157AW-ESR
描述	240 â 960 MHz (G)FSK/OOK Stand-Alone Transmitter with Encoder	240 â 960 MHz (G)FSK/OOK Stand-Alone Transmitter with Encoder

CMT2157AW-ESB

CMT2157AW-ESB概述

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