Si4012
Si4012 C
RYSTAL
-
LESS
R F T
RANS MITTER
Features
Frequency range
27–960 MHz
Output Power Range
–13 to +10 dBm
Low Power Consumption
OOK
14.2 mA @ +10 dBm
FSK
19.8 mA @ +10 dBm
Data Rate = 0 to 100 kbaud FSK
FSK and OOK modulation
Power Supply = 1.8 to 3.6 V
Crystal-less operation
±150 ppm: 0 to 20° C
±250 ppm: –40 to 85° C
Optional crystal input for higher
tolerances
Low power shutdown mode
Integrated voltage regulator
256 byte FIFO
Low battery detector
SMBus Interface
–40 to +85 °C temperature range
10-Pin MSOP Package, Pb-free
RoHs compliant
Low BOM
Ordering Information:
See page 53.
Pin Assignments
Si4012
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
Industrial control
Sensor networks
Health monitors
GPIO0/XTAL 1
GND 2
TXM 3
TXP 4
VDD 5
Si4012
10 SDA
9 SCL
8 SDN
7 nIRQ
6 LED
Description
Silicon Laboratories’ Si4012 is a fully integrated crystal-less 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.
The device offers advanced radio features including continuous frequency
coverage from 27–960 MHz, adjustable output power of up to +10 dBm, and data
rates up to 100 kbaud in FSK mode. The Si4012’s high level of integration offers
reduced BOM cost while simplifying the overall system design.
Patents pending
Functional Block Diagram
Si4012
DIGITAL LOGIC
SDA
SCL
SDN
nIRQ
ANTENNA
TUNE
OOK
FSK
MODULATOR
LCOSC
DIVIDER
PA
AUTO
TUNE
TXP
TXM
RF ANALOG CORE
SMBus
INTERFACE
TX
256 BYTE
DATA FIFO
LED
GPIO0/XTAL
DIGITAL
CONTROLLER
REGISTER
BANK
LPOSC
VA
SLP
TMR
XTAL
OSC
VD
LDO
POR
BANDGAP
BATTERY
MONITOR
VDD
GND
Rev 0.1 7/10
Copyright © 2010 by Silicon Laboratories
Si4012
This information applies to a product under development. Its characteristics and specifications are subject to change without notice.
SILABS [ SILICON LABORATORIES ]
