SI4322-A0-FT【PDF 1/22 页】IC RX FSK UNI 868/915MHZ 16TSSOP

收藏本站

您好，
买卖IC网欢迎您。
请登录
免费注册

买卖IC网

Sheet目录509

[1页]2页 3页 4页 5页

Si4322 Universal ISM Band

FSK Receiver

DESCRIPTION

Si4322

PIN ASSIGNMENT

Silicon Labs’s Si4322 is a single chip, low power, multi-channel FSK receiver

designed for use in applications requiring FCC or ETSI conformance for

unlicensed use in the 868 and 915 MHz bands. Used in conjunction with

SDI

SCK

nSEL

VDI

ARSSI

VDD

Silicon Labs’ FSK transmitters, the Si4322 is a flexible, low cost, and highly

integrated solution that does not require production alignments. All required

RF functions are integrated. Only an external crystal and bypass filtering is

needed for operation.

The Si4322 has a completely integrated PLL for easy RF design, and its

SDO / FFIT

nIRQ

DATA / nFFE

DCLK / nFFS / CFIL

CLK

IA4322

IN1

IN2

VSS

nRES

XTL / REF

rapid settling time allows for fast frequency hopping, bypassing multipath

fading, and interference to achieve robust wireless links. The PLL’s high

resolution allows the usage of multiple channels in any of the bands. The

baseband bandwidth (BW) is programmable to accommodate various

deviation, data rate, and crystal tolerance requirements. The receiver employs

the Zero-IF approach with I/Q demodulation, therefore no external

components (except crystal and decoupling) are needed in a typical

application. The Si4322 is a complete analog RF and baseband receiver

including a multi-band PLL synthesizer with an LNA, I/Q down converter

mixers, baseband filters and amplifiers, and I/Q demodulator.

This document refers to Si4322-IC Rev A0.

See www.silabs.com/integration for any applicable

errata. See back page for ordering information.

FEATURES

? Fully integrated (low BOM, easy design-in)

? No alignment required in production

? Fast settling, programmable, high-resolution PLL

The chip dramatically reduces the load on the microcontroller with integrated

digital data processing: data filtering, clock recovery, data pattern recognition

and integrated FIFO. The automatic frequency control (AFC) feature allows

using a low accuracy (low cost) crystal. To minimize the system cost, the chip

can provide a clock signal for the microcontroller, avoiding the need for two

crystals.

FUNCTIONAL BLOCK DIAGRAM

Fast frequency hopping capability

High bit rate (up to 115.2 kbps in digital mode and

256 kbps in analog mode)

Direct differential antenna input

Programmable baseband bandwidth

(134 to 400 kHz)

Analog and digital RSSI outputs

Automatic frequency control (AFC)

Data quality detection (DQD)

Internal data filtering and clock recovery

RX pattern recognition

SPI compatible serial control interface

Clock and reset signals for microcontroller

48 bit RX data FIFO

MIX

AMP

DCLK

Standard 10 MHz crystal reference

IN1 13

IN2 12

LNA

MIX

AMP

Self cal.

I/Q

Demod.

Data Filt

CLK Rec

clk

data

DATA

Wake-up timer

Low battery detector

2.2 to 3.8 V supply voltage

FIFO

Low power consumption

RF Parts

PLL & I/Q VCO

with cal.

BB Amp/Filt./Limiter

RSSI

COMP

DQD

AFC

Data processing units

? Low standby current (typ. 0.3 μ A)

TYPICAL APPLICATIONS

Remote control

CLK div

Xosc

WTM

with cal.

LBD

Controller

Bias

Home security and alarm

Low Power parts

Wireless keyboard/mouse and other PC peripherals

CLK

XTL

ARSSI

SDI

2 3 4 5 16 10

SCK nSEL SDO nIRQ VDI nRES

11 14

VSS VDD

Toy control

Remote keyless entry

Si4322-DS rev 1.1r 0308

Tire pressure monitoring

Telemetry

Personal/patient data logging

Remote automatic meter reading

www.silabs.com

发布紧急采购，3分钟左右您将得到回复。

采购需求

(若只采购一条型号，填写一行即可)

*型号	*数量	厂商	批号	封装

添加更多采购

采购需求

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

我的联系方式