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CMT2250AW
CMT2250AW
300 – 480 MHz OOK Receiver with Decoder
Features
Embedded EEPROM Very Easy Development with RFPDK All Features Programmable
3-wire SPI Interface for EEPROM Programming Frequency Range: 300 to 480 MHz Symbol Rate: 0.1 to 40 ksps Sensitivity: -114 dBm at 1 ksps, 0.1% BER 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: 3.8 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), DIP16 and SOP16 Packages
Descriptions
The CMT2250AW is a true single-chip, ultra low power and high performance device that consists of an OOK RF receiver, a data decoder and 4 data output pins for various 300 to 480 MHz wireless applications. The device integrates a data decoder 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. The device delivers sensitivity up to -114 dBm while consuming only 3.8 mA current when it is always on. An embedded EEPROM allows the frequency, symbol rate and other features to be programmed into the device using the CMOSTEK USB Programmer and RFPDK. Alternatively, in stock product of 433.92 MHz is available for immediate demands with no need of EEPROM programming. When pairing the device to CMOSTEK transmitters, 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. The CMT2250AW is part of the CMOSTEK NextGenRFTM family, together with CMT215x series transmitters, they enable ultra low cost, low power consumption RF links.
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)
Ordering Information
Part Number Frequency Package MOQ CMT2250AW-EQR 433.92 MHz QFN16 5,000 pcs CMT2250AW-EDB 433.92 MHz DIP16 1,000 pcs CMT2250AW-ESR 433.92 MHz SOP16 2,500 pcs
QFN16 (3X3)
DIP16
SOP16
Copyright © By CMOSTEK
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CMT2250AW
VCON VCOP DATA3 DATA2
12 11 10 9
GND 13
8 XIN
RFIN 14
7 XOUT
GND 15
6 DATA1
VDD 16
5 DATA0/TEST
1234
CSB SDA SCL
NC
QFN16(3x3) Top View
VCOP VCON
GND RFIN GND VDD CSB SDA
1 2 3 4 5 6 7 8
16 DATA3 15 DATA2 14 XIN 13 XOUT 12 DATA1 11 DATA0/TEST 10 NC
9 SCL
SOP16/DIP16 Top View
Pin Number 1 2 3 4
5
6 7 8 9, 10 11 12 13, 15 14 16
Pin Number 1 2
3, 5 4 6 7 8 9 10
11
12 13 14 15,16
Table 2. CMT2250AW Pin Descriptions in QFN16 (3x3) Package
Name CSB SDA SCL NC
DATA0/TEST
DATA1 XOUT
XIN DATA2, DATA3
VCOP VCON GND RFIN VDD
I/O Descriptions I 3-wire SPI chip select input for EEPROM programming IO 3-wire SPI data input and output for EEPROM programming I 3-wire SPI clock input for EEPROM programming - Not connected, leave floating Data output, connect to an LED or other device O Receiving data output for production test purpose O Data output, connect to an LED or other device O Crystal oscillator output I Crystal oscillator input or external reference clock input O Data outputs, connect to LEDs or other devices
IO VCO tank, connected to an external inductor
I Ground I RF signal input to the LNA I Power supply input
Table 1. CMT2250AW Pin Assignments in SOP16/DIP16 Package
Name VCOP VCON GND RFIN VDD CSB SDA SCL
NC
DATA0/TEST
DATA1 XOUT
XIN DATA2, DATA3
I/O Descriptions
IO VCO tank, connected to an external inductor
I Ground I RF signal input to the LNA I Power supply input I 3-wire SPI chip select input for EEPROM programming IO 3-wire SPI data input and output for EEPROM programming I 3-wire SPI clock input for EEPROM programming - Not connected, leave floating
Data output, connect to an LED or other device O
Receiving data output for production test purpose O Data output, connect to an LED or other device O Crystal oscillator output I Crystal oscillator input or external reference clock input O Data outputs, connect to LEDs or other devices
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CMT2250AW
Typical Application
DATA3
DATA3 R3
LED3
L2
DATA2
DATA2 R2
LED2
VDD
12 VCON
11 VCOP
10 DATA3
9 DATA2
1 CSB
2 SDA
3 SCL
4 NC
ANT
C1
VDD
L1
C0
13 GND
14 RFIN
15 GND
16 VDD
8 XIN
U1 CMT2250AW
7 XOUT
6 DATA1
5 DATA0/TEST
X 1 C2 C3
DATA1 DATA0
DATA1 R1
LED1
DATA0 R0
LED0
VDD
CSB SDA SCL
J1
1 2 3 4 5
CSB SDA SCL
Note: Connector J1 is for EEPROM Programming.
Figure 1. CMT2250AW Typical Application Schematic
Table 1. BOM of Typical Application
Designator
U1 X1 L1 L2 C1
Descriptions
CMT2250AW, 300 – 480 MHz OOK receiver with decoder ±20 ppm, SMD32*25 mm, crystal ±5%, 0603 multi-layer chip i.