4322-DKDB1 datasheet, PDF - EEWORLD Datasheet

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4322-DKDB1: Descriptionseries 接收器 For Use With Si4322; CategoryTopical application Wireless rf/communication; File Size302KB，22 Pages; ManufacturerSilicon Labs; Websitehttps://www.silabs.com

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4322-DKDB1 Overview

series 接收器 For Use With Si4322

4322-DKDB1 Parametric

Parameter Name	Attribute value
category
Maker	Silicon Labs
series	EZRadio®
Package	box
type	receiver
frequency	868MHz，915MHz
Supporting use/related products	Si4322
What's included	plate

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Si4322 Universal ISM Band

FSK Receiver

DESCRIPTION

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

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

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.

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.

SDI

SCK

nSEL

SDO / FFIT

nIRQ

DATA / nFFE

DCLK / nFFS / CFIL

CLK

Si4322

PIN ASSIGNMENT

VDI

ARSSI

VDD

IN1

IN2

VSS

nRES

XTL / REF

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

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

Standard 10 MHz crystal reference

Wake-up timer

Low battery detector

2.2 to 3.8 V supply voltage

Low power consumption

Low standby current (typ. 0.3

μA)

FUNCTIONAL BLOCK DIAGRAM

MIX

AMP

clk

I/Q

Demod.

Data Filt

CLK Rec

DCLK

IN1 13

LNA

IN2 12

MIX

AMP

Self cal.

data

DATA

FIFO

PLL & I/Q VCO

with cal.

RSSI

COMP

DQD

AFC

RF Parts

BB Amp/Filt./Limiter

Data processing units

TYPICAL APPLICATIONS

•

Remote control

Home security and alarm

Wireless keyboard/mouse and other PC peripherals

Toy control

Remote keyless entry

Tire pressure monitoring

Telemetry

Personal/patient data logging

Remote automatic meter reading

CLK div

Xosc

WTM

with cal.

LBD

Controller

Bias

Low Power parts

CLK

XTL

ARSSI

SDI

SCK nSEL SDO nIRQ VDI nRES

VSS VDD

Si4322-DS rev 1.1r 0308

987654321

98765432

IA4322

www.silabs.com

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