SI4012-C1001GTR Silicon Laboratories Inc, SI4012-C1001GTR Datasheet - Page 10

• Manufacturer Part Number: SI4012-C1001GTR
• Manufacturer: Silicon Laboratories Inc

Specifications of SI4012-C1001GTR

• Lead Free Status / RoHS Status: Supplier Unconfirmed

Si4012
3. Functional Description
The Si4012 is a fully-integrated, crystal-less, sub-GHz CMOS RF transmitter offering industry-leading RF
performance, high integration, flexibility, low BOM, small board area, and ease of design.
The device is designed to operate with any host MCU via a serial interface while optimized for battery-powered
applications. The Si4012 operates from voltages ranging from 1.8 to 3.6 V and offers an ultra-low standby current
consumption of less than 10 nA.
The embedded power amplifier can be programmed to supply from –13 dBm up to +10 dBm, while the patented
automatic antenna tuning circuit ensures that the resonant frequency and impedance matching between the PA
output and the connected antenna are configured for optimum transmit efficiency and low harmonic content.
Users may configure the device for either FSK or OOK modulation with supported symbol rates of up to 100 kbps.
To ensure the lowest system cost, the Si4012 can be used without an external crystal or frequency reference by
leveraging Silicon Labs' patented and proven crystal-less oscillator technology. This technology offers better than
±150 ppm carrier frequency stability over the temperature range of 0 to +70 °C and ±250 ppm carrier frequency
stability over the industrial temperature range of –40 to + 85 °C. No production alignments are necessary since all
RF functions are integrated into the device.
10
MCU
Host
XTAL
LED
Controller
Interface
SMBus
Digital
Figure 1. Si4012 Functional Block Diagram
Digital Logic
Data FIFO
Modulator
Antenna Tune
255 Byte
Register
Bank
TX
OOK
Rev 0.2
FSK
LCOSC
Divider
LPOSC
XTAL
OSC
TMR
RF Analog Core
SLP
VA
VD
PA
BANDGAP
Si4012
Monitor
Battery
LDO
POR
Auto
Tune
TXP
TXM
VDD
GND