SI4012 datasheet(10/16 Pages) SILABS

Nome de Peças	SI4012

Descrição Electrónicos	CRYSTAL-LESS RF TRANSMITTER

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Fabricante Electrônico	SILABS [Silicon Laboratories]

Página de início	http://www.silabs.com

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10 / 16 page

Si4012

10

Rev 0.1

2. Functional Description

Figure 1. Si4012 Functional Block Diagram

The Si4012 is a crystal wireless transmitter with

continuous frequency tuning over the frequency range

of 27–960 MHz. The wide operating voltage range of

1.8–3.6 V and low current consumption makes the

Si4012

an

ideal

solution

for

battery

powered

applications.

The RF carrier is generated by Silicon Labs patented

pending crystal-less oscillator technology. The device

achieves a frequency accuracy of ±150 ppm over the

commercial temperature range of 0 to 70 °C and

±250 ppm over the industrial temperature range of –40

to +85 °C.

The Si4012's PA output power can be configured

between –13 to +10 dBm with 0.25 dB of resolution.

The PA incorporates automatic ramp-up and ramp-

down control to reduce unwanted spectral spreading.

The Si4012 is designed to work with a microcontroller to

allow custom configuration of the transmitter for

optimum performance. Voltage regulators are integrated

on-chip which allows for a wide operating supply voltage

range of 1.8 to 3.6 V. A standard 2-pin SMB (I2C) bus is

used to communicate with an external microcontroller.

Si4012

GPIO0/XTAL

LED

SDA

SCL

SDN

nIRQ

LCOSC

PA

DIVIDER

XTAL

OSC

AUTO

TUNE

FSK

OOK

LPOSC

LDO

POR

BANDGAP

VA

VD

TXP

TXM

VDD

GND

SLP

TMR

RF ANALOG CORE

ANTENNA

TUNE

MODULATOR

SMBus

INTERFACE

DIGITAL LOGIC

TX

256 BYTE

DATA FIFO

REGISTER

BANK

DIGITAL

CONTROLLER

BATTERY

MONITOR

Nº de peça semelhante - SI4012

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Descrição semelhante - SI4012

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SI4012 Folha de dados(PDF) 10 Page - Silicon Laboratories

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Nº de peça semelhante - SI4012

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