SI4734-C40-GM datasheet, PDF - EEWORLD Datasheet

Datasheet> All Categories > Topical application> Wireless rf/communication> SI4734-C40-GM

SI4734-C40-GM: DescriptionIC RX AM/FM/SW/LW radio 20uqfn; CategoryTopical application Wireless rf/communication; File Size351KB，42 Pages; ManufacturerSilicon; Environmental Compliance

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SI4734-C40-GM Overview

IC RX AM/FM/SW/LW radio 20uqfn

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Si4734/35-C40

ROADCAST

AM/FM R

ADIO

ECEIVER

Features



Worldwide FM band support



AM/FM/SW/LW digital tuning



EN55020 compliant



No manual alignment necessary



Programmable reference clock



Volume control



Adjustable soft mute control



RDS/RBDS processor (Si4735)



Optional digital audio out (Si4735)



2-wire and 3-wire control interface



Integrated LDO regulator



2.0 to 5.5 V supply voltage (SSOP)



2.7 to 5.5 V supply voltage (QFN)



Wide range of ferrite loop sticks and

(64–108 MHz)

Worldwide AM band support

(520–1710 kHz)

SW band support

(2.3–26.1 MHz)

LW band support

(153–279 kHz)

Excellent real-world performance

Freq synthesizer with integrated VCO

Advanced seek tuning

Automatic frequency control (AFC)

Automatic gain control (AGC)

Digital FM stereo decoder

Programmable AVC max gain

Programmable de-emphasis

Seven selectable AM channel filters

Ordering Information:

See page 32.

Pin Assignments

Si4734/35 (QFN)

GPO3/DCLK

VIO

GPO2/INT

GPO1

air loop antennas supported



QFN and SSOP packages



RoHS compliant

FMI 2

RFGND 3

15 DOUT

Applications



Description

The Si4734/35 is the first digital CMOS AM/FM radio receiver IC that integrates

the complete tuner function from antenna input to audio output.

Si4734/35 (SSOP)

DOUT

DFS

GPO3/DCLK

GPO2/INT

GPO1

LOUT

ROUT

DBYP

VDD

VIO

RCLK

SDIO

SCLK

SEN

RST

GND

Functional Block Diagram

FM / SW

ANT

FMI

LNA

AGC

AM / LW

ANT

AMI

RFGND

LNA

AGC

2.7–5.5 V (QFN)

2.0–5.5 V (SSOP)

VDD

GND

LDO

AFC

ADC

DSP

DAC

LOUT

Si4734/35

RDS

(Si4735)

LOW-IF

DIGITAL

AUDIO

(Si4735)

DOUT

DFS

GPO/DCLK

FMI

RFGND

DAC

ROUT

AMI

CONTROL

INTERFACE

VIO

1.85-3.6 V

This product, its features, and/or its

architecture is covered by one or more of

the following patents, as well as other

patents, pending and issued, both foreign

and domestic: 7,127,217; 7,272,373;

7,272,375;

7,321,324;

7,355,476;

7,426,376;

7,471,940;

7,339,503;

7,339,504.

SEN

SCLK

Rev. 1.0 12/09

RCLK

SDIO

RST

RCLK

SCLK

Table and portable radios

Stereos

Mini/micro systems

CD/DVD players

Boom boxes



SEN

SDIO

Modules



Clock radios



Mini HiFi



Entertainment systems

AMI 4

RST 5

GND

PAD

11 VDD

Si4734/35-C40

DFS

14 LOUT

13 ROUT

12 GND

Si4734/35-C40

ABLE

Section

ONTENTS

Page

1. Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

2. Typical Application Schematic (QFN) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

3. Typical Application Schematic (SSOP) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18

4. Bill of Materials (QFN/SSOP) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

5. Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

5.1. Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

5.2. Operating Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

5.3. FM Receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21

5.4. AM Receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21

5.5. SW Receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

5.6. LW Receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21

5.7. Digital Audio Interface (Si4735 Only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

5.8. Stereo Audio Processing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

5.9. De-emphasis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

5.10. Stereo DAC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

5.11. Soft Mute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

5.12. RDS/RBDS Processor (Si4735 Only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24

5.13. Tuning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

5.14. Seek . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

5.15. Reference Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

5.16. Control Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

5.17. GPO Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

5.18. Firmware Upgrades . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26

5.19. Reset, Powerup, and Powerdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

5.20. Programming with Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

6. Commands and Properties . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

7. Pin Descriptions: Si4734/35-GM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

8. Pin Descriptions: Si4734/35-GU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

9. Ordering Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

10. Package Markings (Top Marks) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

10.1. Si4734/35 Top Mark (QFN) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

10.2. Top Mark Explanation (QFN) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

10.3. Si4734/35 Top Mark (SSOP) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

10.4. Top Mark Explanation (SSOP) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

11. Package Outline: Si4734/35 QFN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

12. PCB Land Pattern: Si4734/35 QFN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

13. Package Outline: Si4734/35 SSOP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

14. PCB Land Pattern: Si4734/35 SSOP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

15. Additional Reference Resources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

Contact Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42

Rev. 1.0

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