Description
Silicon Laboratories’ Si4012 is a fully-integrated crystalless CMOS high-data-rate RF transmitter designed for the sub-GHz ISM band. This chip is optimized for battery powered applications requiring low standby currents and high output transmit power.

Features
Frequency range
27–960 MHz
Output power range
–13 to +10 dBm
Low Power Consumption
OOK
        14.2mA @ +10dBm
FSK
        19.8mA @ +10dBm
Data rate:
Up to 100 kbaud FSK
Up to 50 kbaud OOK
FSK and OOK modulation
Power supply = 1.8 to 3.6 V
Automatic antenna tuning
Programmable ramp rate
Crystal-less operation
±150 ppm: 0 to 70° C
±250 ppm: –40 to 85° C
Optional crystal input for applications requiring tighter tolerances
Ultra low standby current <10 nA
Integrated voltage regulator
255 byte FIFO
Low battery detector
SMBus Interface
–40 to +85 °C temperature range
10-Pin MSOP Package, RoHs compliant
Low BOM

Applications
Wireless MBus T1-mode
Remote control
Home security & alarm
Personal data logging
Toy control
Wireless PC peripherals
Remote meter reading
Remote keyless entry
Home automation
ndustrial control
Sensor networks
Health monitors