SI4012 查看數據表（PDF） - Silicon Laboratories
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SI4012 Datasheet PDF : 50 Pages
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Si4012
Si4012 CRYSTAL-LESS FSK/OOK RF TRANSMITTER
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:
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
Industrial control
Sensor networks
Health monitors
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.
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 overall system design.
Functional Block Diagram
Ordering Information:
See page 43.
Pin Assignments
Si4012
XTAL 1
GND 2
TXM 3
TXP 4
VDD 5
Si4012
10 SDA
9 SCL
8 SDN
7 nIRQ
6 LED
Patents pending
Host
MCU
LED
XTAL
Digital Logic
Antenna Tune
SMBus
Interface
OOK
FSK
Modulator
Digital
Controller
TX
255 Byte
Data FIFO
Register
Bank
Si4012
RF Analog Core
Divider
PA
LCOSC
Auto
TXP
Tune
TXM
LPOSC
VA
LDO
VDD
POR
VD
BANDGAP
GND
XTAL
OSC
Battery
Monitor
Rev 1.1 3/13
Copyright © 2013 by Silicon Laboratories
Si4012
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