SI4705 datasheet, PDF - EEWORLD Datasheet

Datasheet> All Categories > semiconductor> Other integrated circuit (IC)> SI4705

SI4705: DescriptionFM, AUDIO SINGLE CHIP RECEIVER, PDSO24; Categorysemiconductor Other integrated circuit (IC); File Size174KB，3 Pages; ManufacturerETC2

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SI4705 Overview

FM, AUDIO SINGLE CHIP RECEIVER, PDSO24

SI4705 Parametric

Parameter Name	Attribute value
Number of functions	1
Number of terminals	24
Maximum operating temperature	85 Cel
Minimum operating temperature	-20 Cel
Maximum supply/operating voltage	5.5 V
Minimum supply/operating voltage	2.7 V
Rated output voltage	80 mV
Processing package description	ROHS COMPLIANT, MO-137AE, SSOP-24
state	ACTIVE
Craftsmanship	CMOS
packaging shape	Rectangle
Package Size	SMALL OUTLINE, SHRINK PITCH
surface mount	Yes
Terminal form	GULL WING
Terminal spacing	0.6350 mm
Terminal location	pair
Packaging Materials	Plastic/Epoxy
Temperature level	other
Consumer IC Type	audio monolithic receiver
harmonic distortion	0.1000 %
Rated frequency signal-to-noise ratio	58 dB

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Si4704/05

Enhanced Broadcast FM Radio Receiver for Portable Applications

Description

The Si4704/05 enhanced FM receiver is the most

advanced portable solution available today offering

embedded antenna support, digital audio out, worldwide

FM band support, and highly flexible, mature, and proven

FM functionality in a simple API. The Si4704/05

incorporates Silicon Labs' tuned-resonance antenna

technology for crystal clear FM reception in wire-free

device enclosures. Silabs' internationally patented tuned-

resonance technology allows embedded FM antennas

such as PCB traces, loops, stubs, or other devices to

perform exceptionally well, enabling devices with

integrated Bluetooth to receive FM transmissions without

an external FM antenna, and transmit the FM content to

Bluetooth-enabled headsets. This is the best, most cost-

effective solution to enable wire-free FM reception.

The Si4705 also offers digital audio out for FM recording.

Content recorded over the Si4705 can be shared with

friends or played at a later time in MP3 format. The content

can also be tagged with RDS information, allowing song

name and artist labels to be displayed as is done with MP3

meta data. Using the digital audio out, the Si4705 can also

reduce total system power consumption by avoiding

unnecessary ADC/DAC conversions between the FM

receiver and the host processor.

The Si4704/05 truly supports worldwide FM bands, starting

at 64 MHz for Eastern European countries and extending

all the way to 108 MHz for the rest of the world. The device

supports channel spacing down to 10 kHz, and includes

advanced, proven seek functionality. All the Silicon Labs

proven FM receiver expertise is incorporated in the Si4704/

05, gained through thousands of designs with almost every

OEM and ODM in the world and over 100 million devices

shipped.

The Si4704/05 leverage Silicon Labs' internationally

patented and proven digital low-IF architecture, offering

proven functionality in a simple and mature API. The

device is offered in a highly reliable, ultra-small

3 x 3 x 0.55 mm 20-pin QFN and is layout compatible with

the full suite of Silicon Labs broadcast offerings including

Headphone

Cable

FMI

RFGND

LNA

PGA

ADC

AGC

0/90

RSSI

AFC

RDS

(Si4705)

DIGITAL INTERFACE

(Si4705)

ADC

DSP

DAC

ROUT

GPO

DCLK

DOUT

DFS

FM transmit, AM/FM/SW receive, weather band receive

and SAME decode, and unparalleled RDS data receivers.

The complete solution, including a minimal BOM, requires

less than 15 mm

board area, or less than half that of other

competing solutions. The Si4705 incorporates Silicon Labs'

proven and widely adopted RDS processor, including

worldwide compliance, all symbol decoding, error

detection, error correction, and other RDS functions. The

Si4705 RDS functionality is unmatched in the industry for

performance, on-chip processing, and worldwide adoption.

Features

Worldwide FM band support (64~108 MHz)

Supports integrated antenna

Digital low-IF receiver

Excellent real-world performance

Frequency synthesizer with integrated VCO

Seek tuning

Automatic frequency control (AFC)

Automatic gain control (AGC)

Integrated LDO regulator

Minimal BOM

Adjustable seek parameters

Adjustable mono/stereo blend

Adjustable soft mute

RDS/RBDS decoder(Si4705 only)

Optional digital audio output (Si4705 only)

Programmable de-emphasis(50/75us)

Programmable reference clock input

Signal quality measurement

3 x 3 x 0.55 mm 20-pin Pb-free QFN package

Cellular handsets

MP3 players

Portable media players

Personal computers

Portable navigation devices

Consumer electronics

Applications

Si4704/05

DAC

LOUT

LPI

32.768 kHz

RCLK

2.7–5.5 V

VDD

REG

XTAL

OSC

SEN

CONTROL

INTERFACE

SCLK

RST

FM Tuner

SDIO

VIO

4.02.08

SI4705 Related Products

	SI4705	SI4704	SI4705-D60-GM
Description	FM, AUDIO SINGLE CHIP RECEIVER, PDSO24	FM, AUDIO SINGLE CHIP RECEIVER, PDSO24	FM, AUDIO SINGLE CHIP RECEIVER, PDSO24
Number of functions	1	1	1
Number of terminals	24	24	24
Maximum operating temperature	85 Cel	85 Cel	85 Cel
Minimum operating temperature	-20 Cel	-20 Cel	-20 Cel
Maximum supply/operating voltage	5.5 V	5.5 V	5.5 V
Minimum supply/operating voltage	2.7 V	2.7 V	2.7 V
Rated output voltage	80 mV	80 mV	80 mV
Processing package description	ROHS COMPLIANT, MO-137AE, SSOP-24	ROHS COMPLIANT, MO-137AE, SSOP-24	ROHS COMPLIANT, MO-137AE, SSOP-24
state	ACTIVE	ACTIVE	ACTIVE
Craftsmanship	CMOS	CMOS	CMOS
packaging shape	Rectangle	Rectangle	Rectangle
Package Size	SMALL OUTLINE, SHRINK PITCH	SMALL OUTLINE, SHRINK PITCH	SMALL OUTLINE, SHRINK PITCH
surface mount	Yes	Yes	Yes
Terminal form	GULL WING	GULL WING	GULL WING
Terminal spacing	0.6350 mm	0.6350 mm	0.6350 mm
Terminal location	pair	pair	pair
Packaging Materials	Plastic/Epoxy	Plastic/Epoxy	Plastic/Epoxy
Temperature level	other	other	other
Consumer IC Type	audio monolithic receiver	audio monolithic receiver	audio monolithic receiver
harmonic distortion	0.1000 %	0.1000 %	0.1000 %
Rated frequency signal-to-noise ratio	58 dB	58 dB	58 dB

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