Datasheet > SI4420-D1-FTR

SI4420-D1-FTR

更新时间： 2024-11-16 01:20:03

品牌	Logo	应用领域
其他 - ETC		ISM频段
页数	文件大小	规格书
33页	620K
描述
Si4420 Universal ISM Band FSK Transceiver

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SI4420-D1-FTR 数据手册

Si4420 Universal ISM

Si4420

Band FSK Transceiver

PIN ASSIGNMENT

DESCRIPTION

Silicon Labs’ Si4420 is a single chip, low power, multi-channel FSK

transceiver designed for use in applications requiring FCC or ETSI

conformance for unlicensed use in the 315, 433, 868 and 915 MHz

bands. The Si4420 transceiver is a part of Silicon Labs’ EZRadio^TMproduct

line, which produces a flexible, low cost, and highly integrated solution that

does not require production alignments. The chip is a complete analog RF

and baseband transceiver including a multi-band PLL synthesizer with PA,

LNA, I/Q down converter mixers, baseband filters and amplifiers, and an

I/Q demodulator. All required RF functions are integrated. Only an external

crystal and bypass filtering are needed for operation.

Rev C and later

This document refers to Si4420-IC Rev D1.

See www.silabs.com/integration for any applicable

errata. See back page for ordering information.

The Si4420 features 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 receiver baseband bandwidth (BW) is programmable to

accommodate various deviation, data rate and crystal tolerance

requirements. The transceiver employs the Zero-IF approach with I/Q

demodulation. Consequently, no external components (except crystal and

decoupling) are needed in most applications.

FEATURES

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

 No alignment required in production

 Fast-settling, programmable, high-resolution PLL synthesizer

 Fast frequency-hopping capability

 High bit rate (up to 115.2 kbps in digital mode and 256 kbps

in analog mode)

The Si4420 dramatically reduces the load on the microcontroller with the

integrated digital data processing features: data filtering, clock recovery,

data pattern recognition, integrated FIFO and TX data register. The

automatic frequency control (AFC) feature allows the use of a low accuracy

(low cost) crystal. To minimize the system cost, the Si4420 can provide a

clock signal for the microcontroller, avoiding the need for two crystals.

 Direct differential antenna input/output

 Integrated power amplifier

 Programmable TX frequency deviation (15 to 240 KHz)

 Programmable RX baseband bandwidth (67 to 400 kHz)

 Analog and digital RSSI outputs

 Automatic frequency control (AFC)

 Data quality detection (DQD)

 Internal data filtering and clock recovery

 RX synchron pattern recognition

 SPI compatible serial control interface

 Clock and reset signals for microcontroller

 16 bit RX Data FIFO

For low power applications, the Si4420 supports low duty cycle operation

based on the internal wake-up timer.

FUNCTIONAL BLOCK DIAGRAM

 Two 8 bit TX data registers

 Low power duty cycle mode

 Standard 10 MHz crystal reference

 Wake-up timer

MIX

DCLK /

CFIL /

FFIT /

AMP

clk

RF1

RF2

Data Filt

CLK Rec

I/Q

DEMOD

Self cal.

FSK /

DATA /

nFFS

LNA

data

MIX

AMP

 2.2 to 5.4 V supply voltage

FIFO

 Low power consumption

 Low standby current (0.3 A)

RSSI

PLL & I/Q VCO

with cal.

COMP

DQD

AFC

RF Parts

BB Amp/Filt./Limiter

Data processing units

 Compact 16 pin TSSOP package

WTM

with cal.

CLK div

Xosc

LBD

Low Power parts

Controller

TYPICAL APPLICATIONS

 Remote control

Bias

 Home security and alarm

 Wireless keyboard/mouse and other PC peripherals

 Toy controls

CLK

VDD

XTL /

REF

ARSSI SDI

SCK nSEL SDO

nIRQ nRES nINT /

VDI

VSS

 Remote keyless entry

 Tire pressure monitoring

 Telemetry

 Remote automatic meter reading

Si4420-DS Rev 1.7r 0308

www.silabs.com

12 3 4 5 6 7...33

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与SI4420-D1-FTR相关器件

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SI4420DY	INFINEON	获取价格	HEXFET Power MOSFET
SI4420DY	VISHAY	获取价格	N-Channel, 30-V (D-S) MOSFET
SI4420DY	NXP	获取价格	N-channel enhancement mode field-effect transistor
SI4420DY	FAIRCHILD	获取价格	Single N-Channel Logic Level PowerTrencha MOSFET
SI4420DY,518	NXP	获取价格	SI4420DY
SI4420DY/T3	NXP	获取价格	TRANSISTOR 12.5 mA, 30 V, N-CHANNEL, Si, SMALL SIGNAL, MOSFET, MS-012AA, PLASTIC, SO-8, FE
SI4420DYD84Z	FAIRCHILD	获取价格	Small Signal Field-Effect Transistor, 12.5A I(D), 30V, 1-Element, N-Channel, Silicon, Meta
SI4420DY-E3	VISHAY	获取价格	Power Field-Effect Transistor, N-Channel, Metal-oxide Semiconductor FET
SI4420DYL86Z	FAIRCHILD	获取价格	Small Signal Field-Effect Transistor, 12.5A I(D), 30V, 1-Element, N-Channel, Silicon, Meta
SI4420DYL99Z	FAIRCHILD	获取价格	Small Signal Field-Effect Transistor, 12.5A I(D), 30V, 1-Element, N-Channel, Silicon, Meta

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