Si4730/31-D60

Broadcast AM/FM Radio Receiver

Description

The Si4730/31 is the industry's first fully integrated, 100% CMOS AM/FM radio receiver IC. The Si4730/31-D60 AM/ FM radio delivers excellent performance and is simple to design-in. Available in a small 3 x 3 mm QFN package, the Si4730/31 offers unmatched integration and PCB space savings with a minimal number of external components and no factory tuned components.

Leveraging Silicon Laboratories' proven and patented 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 Si4730/31 solution includes advanced seek algorithms, multipath detection and mitigation, adjustable soft mute, FM hi-cut control, smart tune, and FM stereo processing. In addition, the Si4730/31 provides an auxiliary input to support a full digital system architecture.

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-D60 incorporates an advanced 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 this feature, the Si4731 enables broadcast data such as station identification and song name to be displayed to the end user.

Features

-Worldwide FM band support (64–108 MHz)

-Worldwide AM band support (520–1710 kHz)

-AM/FM digital tuning

-EN55020 compliant

-FM multipath detection and mitigation

-FM hi-cut control

-Advanced stereo blend

-AUXIN stereo ADC

-No manual alignment required

-Seven selectable AM channel filters

-Advanced AM/FM seek tuning

-Programmable AVC max gain

-Frequency synthesizer with integrated VCO

-Automatic frequency control (AFC)

-Programmable de-emphasis

-Digital FM stereo decoder

-Integrated LDO regulator

-Wide range of ferrite and air loop antennas supported

-Advanced FM RDS/RBDS processor

-QFN and SSOP Pb-free/RoHS compliant package

Applications

-Audio video receivers

-Mini/micro systems

-Home theater systems

-Docking stations

-Blu-ray / DVD players

-Table / clock radios

-Boomboxes

FM / SW

RIN

 

 

 

 

 

S i473x-D 60

 

ANT

 

 

 

 

 

 

LIN

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

FMI

 

 

 

 

RDS

 

 

DOUT

 

 

 

 

 

DIGITAL

 

 

 

 

 

 

(Si4731)

DFS

 

 

 

LNA

 

 

 

 

 

 

 

 

 

 

 

AUDIO

 

 

 

 

 

 

 

 

 

 

 

 

AGC

 

 

 

LOW -IF

 

 

G PO /D C LK

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

AM / LW

 

AMI

 

 

M ux

A D C

 

 

D A C

R O U T

ANT

RFGND

LNA

 

 

 

DS P

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ADC

 

 

DAC

LO U T

 

 

 

AGC

M u x

 

 

 

2.7~5.5 V (QFN)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2.0~5.5 V (SSOP)

VA

 

 

 

 

 

CONTROL

 

 

+

 

 

LD O

 

A FC

 

 

 

VD

 

GND

 

 

 

INTERFACE

 

 

 

 

 

 

 

 

1.62 - 3.6 V

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RCLK

 

SEN

SCLK

SDIO

RST

 

Pin Assignments

Si473x (QFN)

 

 

NC

GPO1

GPO2/INT

GPO3/DCLK

DFS

 

NC

1

20

19

18

17

16

 

FMI

2

 

 

 

 

15

DIN

RFGND

3

 

GND

 

14

LOUT/DFS

AMI

4

 

PAD

 

13

ROUT/DOUT

RST

5

 

 

 

 

12

GND

 

6

7

8

9

10

11

VDD

 

SEN

SCLK

SDIO

RCLK

VIO

 

 

Si473x (SSOP)

DOUT/[RIN]

 

1

24

 

 

LOUT/[DFS]

DFS/[LIN]

 

2

23

 

ROUT/[DOUT]

 

 

GPO3/[DCLK]

 

3

22

 

DBYP

 

 

 

 

 

 

4

21

 

VA

GPO2/[INT]

 

 

 

GPO1

 

5

20

 

 

VD

 

 

 

NC

 

6

19

 

 

RCLK

 

 

 

NC

 

7

18

 

 

SDIO

 

 

 

FMI

 

8

17

 

 

SCLK

 

 

RFGND

 

9

16

 

 

 

 

 

 

 

SEN

 

NC

 

10

15

 

 

 

 

 

 

 

 

RST

 

NC

 

11

14

 

 

GND

 

 

 

AMI

 

12

13

 

 

GND

 

 

 

 

 

 

 

 

 

 

 

 

 

 

AM/FM Receiver

Copyright © 2010 by Silicon Laboratories

9.17.10

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Silicon Laboratories SI4730 manual Description, Features, Applications, Pin Assignments

SI4730 specifications

Silicon Laboratories SI4730 is a highly versatile and compact AM/FM radio receiver designed for a wide range of applications, including consumer electronics, automotive systems, and industrial devices. This semiconductor solution has gained attention due to its comprehensive features, advanced technologies, and energy-efficient characteristics, making it an ideal choice for developers and manufacturers seeking high-performance audio integration.

One of the main features of the SI4730 is its robust multi-band reception capability. It supports AM, FM, and digital radio standards, ensuring exceptional audio quality and performance across various frequency ranges. The chip integrates advanced digital signal processing (DSP) technology, enabling clear audio playback and reduced noise interference. This capability is essential for enhancing the listener's experience, particularly in environments with variable signal strength.

The SI4730 employs a low-power architecture, which is crucial for battery-operated devices. It is designed to consume minimal energy, ensuring prolonged battery life while providing high-quality reception. This efficiency extends to both active and sleep modes, making it suitable for portable applications where energy conservation is paramount.

Another significant characteristic of the SI4730 is its tuning flexibility. It features a programmable GPIO interface that allows for smooth tuning and easy integration with microcontrollers. This enables developers to customize their designs while simplifying the implementation process. Furthermore, the device supports seek tuning and preset storage, allowing users to quickly access their favorite stations.

In addition to its core capabilities, the SI4730 boasts built-in features such as RDS (Radio Data System) support, which provides useful information such as station identification and song titles. This enhances the overall user experience, making the system more informative and engaging.

The compact footprint of the SI4730 makes it an excellent choice for space-constrained applications. Its small form factor allows for easy integration into various devices without sacrificing performance. With a wide supply voltage range and adjustable power levels, this receiver chip is adaptable to different system requirements.

Overall, Silicon Laboratories SI4730 represents a powerful blend of advanced technology, energy efficiency, and versatile features. Its ability to deliver high-quality audio while maintaining low power consumption makes it an appealing option for modern electronic devices seeking to provide an enhanced listening experience. As the demand for integrated audio solutions continues to grow, the SI4730 stands out as a leading choice in the marketplace.