SI4731 Silicon Laboratories, SI4731 Datasheet

SI4731

Manufacturer Part Number

SI4731

Description

(SI4730 / SI4731) Broadcast AM/FM Radio Receiver

Manufacturer

Silicon Laboratories

Datasheet

1.SI4731.pdf (2 pages)

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Part Number:

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Part Number:

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Company:

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Part Number:

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Manufacturer:

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Description

The Si4730/31 is the industry's first fully integrated, 100%

CMOS AM/FM radio receiver IC. The Si4730/31 AM/FM

radio provides the space savings and low power

consumption necessary for portable devices while

delivering the high performance and design simplicity

desired for all AM/FM solutions. Offering unmatched

integration and PCB space savings, the Si4730/31

requires only two external components and less than 15

Leveraging Silicon Laboratories' proven and patented

Si4700/01 FM digital receiver architecture, the Si4730/31

delivers superior RF performance and interference

rejection in both AM and FM bands. The high integration

and complete system production test simplifies design-in,

increases system quality, and improves manufacturability.

The

algorithms, adjustable soft mute, auto-calibrated digital

tuning, and FM stereo processing. In addition, the Si4730/

31 provides a programmable reference clock, I

compatible 2-wire control interface, and a Si4700/01

backwards-compatible 3-wire control interface.

The Si4730/31 utilizes digital processing to achieve high

fidelity, optimal performance, and design flexibility. The

chip provides excellent pilot rejection, selectivity, and

unmatched audio performance, and offers both the

manufacturer and the end-user extensive programmability

and flexibility in listening experience.

The Si4731 incorporates a digital processor for the

European Radio Data System (RDS) and the North

American

including

synchronization, error detection, and error correction

functions. Using this feature, the Si4731 enables

broadcast data such as station identification and song

name to be displayed to the end user.

AM/FM Receiver

of board area.

Si4730/31

Radio

all

required

solution

Broadcast

2.7–5.5 V

ANT

symbol

includes

RFGND

GND

Data

VDD

AMI

FMI

decoding,

System

advanced

LNA

AGC

LDO

(RBDS)

block

seek

C-

AFC

ADC

Broadcast AM/FM Radio Receiver

Features

Applications

Worldwide FM band support (76–108 MHz)

Worldwide AM band support (520–1710 kHz)

AM/FM digital tuning

Excellent real-world performance

Only 2 external components

No manual alignment required

Adjustable AM channel filters

Advanced AM/FM seek tuning

Digital volume control

Adjustable soft mute control

Frequency synthesizer with integrated VCO

Automatic frequency control (AFC)

Automatic gain control (AGC)

Programmable AM/FM de-emphasis

Adaptive noise suppression

Integrated LDO regulator

Programmable reference clock

FM RDS/RBDS processor (Si4731 only)

2-wire and 3-wire control interface

2.7 to 5.5 V supply voltage

AM ferrite loopstick and air loop antenna support

3 x 3 x 0.55 mm 20-pin QFN package

Table and portable radios

Stereos

Mini/micro systems

Portable media players

Boomboxes

Cellular handsets

Clock radios

Modules

Entertainment systems

(Si4731)

LOW-IF

RDS

DSP

Pb-free/RoHS compliant

INTERFACE

CONTROL

Si473x

DAC

ROUT

LOUT

VIO

1.5–3.6 V

Si4730/31

6.15.07

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SI4731 Summary of contents

Page 1

... The Si4731 incorporates a digital processor for the European Radio Data System (RDS) and the North American Radio ...

... GND 6 11 VDD AM/FM Receiver Silicon Laboratories and Silicon Labs are trademarks of Silicon Laboratories Inc. Other products or brandnames mentioned herein are trademarks or registered trademarks of their respective holders. Broadcast AM/FM Radio Receiver Test Condition f RF (S+N)/ (S+N)/ – > 1 MHz – ...

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SI4731 Silicon Laboratories, SI4731 Datasheet

SI4731

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SI4731 Summary of contents

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