si4735 Silicon Laboratories, si4735 Datasheet

si4735

Manufacturer Part Number

si4735

Description

Broadcast Am/fm/sw/lw Radio Receiver

Manufacturer

Silicon Laboratories

Datasheet

1.SI4735.pdf (2 pages)

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Description

The Si4734/35 is the industry's first fully integrated, 100%

CMOS

unmatched integration and PCB space savings, the

Si4734/35 requires minimal external components and less

than 20 mm

The Si4734/35 AM/FM/SW/LW 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/SW/LW solutions.

Leveraging Silicon Laboratories' proven and patented

Si4700/01 FM tuner's digital low intermediate frequency

(low-IF) receiver architecture, the Si4734/35 delivers

superior RF performance and interference rejection in AM,

FM, and short wave and long wave bands. The high

integration and complete system production test simplifies

design-in,

manufacturability.

The Si4734/35 is a feature-rich solution including

advanced seek algorithms, soft mute, auto-calibrated

digital tuning, and FM stereo processing. In addition, the

Si4734/35 provides analog or digital audio output and a

programmable reference clock. The device supports I

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

backwards-compatible 3-wire control interface.

The Si4734/35 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 the listening experience.

The Si4735 incorporates a digital processor for the

European Radio Data System (RDS) and the North

American Radio Broadcast Data System (RBDS), including

all required symbol decoding, block synchronization, error

detection, and error correction functions. Using RDS, the

Si4735

identification and song name to be displayed to the user.

AM/FM Receiver

AM/FM/SW/LW

enables

increases

of board area, excluding the antenna inputs.

broadcast

system

2.7–5.5 V

AM/LW

radio

ANT

data

quality,

FM/SW

receiver

ANT

RFGND

GND

VDD

AMI

FMI

such

and

IC.

LNA

AGC

LDO

Broadcast AM/FM/SW/LW Radio Receiver

improves

Offering

station

C-

AFC

Features

Applications

ADC

Worldwide FM band support (64–108 MHz)

Worldwide AM band support(520–1710 kHz)

SW band support (2.3–21.85 MHz)

LW band support (153–279 KHz)

Excellent real-world performance

Freq synthesizer with integrated VCO

Automatic frequency control (AFC)

Automatic gain control (AGC)

Integrated LDO regulator

Digital FM stereo decoder

Programmable de-emphasis

Adaptive noise suppression

AM/FM/SW/LW digital tuning

No manual alignment necessary

Adjustable channel filters

EN55020 complaint

Programmable reference clock

Digital volume control

Adjustable soft mute control

RDS/RBDS processor (Si4735 only)

Optional digital audio out (Si4735 only)

2-wire and 3-wire control interface

2.7 to 5.5 V supply voltage

Wide range of ferrite loop sticks and air loop antennas

supported

3 x 3 x 0.55 mm 20-pin QFN package

Table and portable radios

Stereos

Mini/micro systems

Portable media players

Boomboxes

Clock radios

Modules

Entertainment systems

Cellular handsets

Pb-free/RoHS compliant

(Si4735)

LOW-IF

RDS

DSP

INTERFACE

Si4734/35

CONTROL

DIGITAL

(Si4735)

AUDIO

DAC

GPO/DCLK

DOUT

ROUT

LOUT

VIO

1.5–3.6 V

DFS

Si4734/35

4.1.08

Related parts for si4735

si4735 Summary of contents

Page 1

... The Si4735 incorporates a digital processor for the European Radio Data System (RDS) and the North American Radio Broadcast Data System (RBDS), including all required symbol decoding, block synchronization, error detection, and error correction functions ...

Page 2

... 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/SW/LW Radio Receiver Test Condition f RF (S+N)/ (S+N)/ – > 1 MHz – ...

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