SI4702-C19-GMR - Silicon Labs

VIO

CONTROLLER

ADC

Si4702/03

DSP

FILTER

DEMOD

MPX

AUDIO

SCLK

SDIO

CONTROL

INTERFACE

SEN

DAC

DAC ROUT

LOUT

0 / 90 LOW-IF

RSSI

TUNE

GPIO

AMPLIFIER

GPIO

RST

RFGND LNA

FMIP

AFC

AGC

PGA

RCLK

REG

32.768 kHz

2.7–5.5 V

Headphone

Cable

RDS

(Si4703)

XTAL

OSC

Si4702/03-C19

Broadcast FM Radio Tuner for Portable Applications

Description

The Si4702/03-C19 extends Silicon Laboratories Si4700/

01 FM tuner family and further increases the ease and

attractiveness of adding FM radio reception to mobile

devices through small size and board area, minimum

component count, flexible programmability, and superior,

proven performance. The Si4702/03 leverage Silicon

Laboratories' highly successful and patented Si4700/01 FM

tuner, and are pin and software compatible to existing

Si4700/01 FM tuner designs. The Si4702/03 benefits from

proven digital integration and 100% CMOS process

technology, resulting in a completely integrated solution.

The Si4702/03 proven and highly flexible functionality

caters to the subjective nature of audio preferences and

variable FM broadcast environments worldwide.

The Si4703-C19 incorporates a digital processor for the

European Radio Data System (RDS) and the US Radio

Broadcast Data System (RBDS) including all required

symbol decoding, block synchronization, error detection,

and error correction functions. RDS enables data such as

station identification and song name to be displayed to the

user. The Si4703 offers a detailed RDS view and a

standard view, allowing adopters to selectively choose

granularity of RDS status, data, and block errors. Si4703

software is backwards compatible to the proven Si4701,

adopted by leading cell-phone, PND, and MP3

manufacturers worldwide.

The Si4702/03 device’s high level of integration and

complete FM system increases quality to manufacturers,

improves device yields, and simplifies device

manufacturing and final testing.

Features

-Worldwide FM band support (76–108 MHz)

-Digital low-IF receiver

-Frequency synthesizer with integrated VCO

-Seek tuning

-Automatic frequency control (AFC)

-Automatic gain control (AGC)

-Excellent overload immunity

-Signal strength measuremen t

-Programmable de-emphasis (5 0/75 µs)

-Adaptive noise suppression

-Volume control

-Line-level analog output

-32.768 kHz reference clock

-2-wire and 3-wire control interface

-2.7 to 5.5 V supply voltage

-Integrated LDO regulator allows direct connection

to battery

-3 x 3 mm 20-pin QFN package

-Pb-free/RoHS compliant

-RDS/RBDS Processor (Si4703)

-Integrated crystal oscillator

Applications

-Cellular handsets

-MP3 players

-Portab le radios

-USB FM radio

-PDAs

-Notebook PCs

-Portable navigation

-Consumer ele ctr on ics

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

Si4702/03-C19

Broadcast FM Radio Tuner for Portable Applications

Selected Electrical Specifications

Parameter Symbol Test Condition Min Typ Max Unit

Input Frequency fRF 76 —108 MHz

Sensitivity (S+N)/N = 26 dB —1.1 —µV EMF

Input IP3 |f2 – f1| > 1 MHz; f0 = 2 x f1 – f2

AGC disabled —106 —dBµV EMF

Adjacent Channel Selectivity ±200 kHz —50 —dB

Alternate Channel Selectivity ±400 kHz —70 —dB

RCLK Frequency —32.768 —kHz

RCLK Frequency Tolerance –200 —200 ppm

Audio Output Voltage 72 80 90 mVrms

Audio Band Limits ±1.5 dB 30 —15k Hz

Audio S/N —59 —dB

Audio THD —0.1 0.5 %

Supply Voltage VD, VA 2.7 —5.5 V

Interface Supply Voltage VIO 1.5 —3.6 V

Ambient Temperature TA–20 25 85 C

Supply Current IAD —14.4 —mA

Powerdown Current IPD —8.5 12 µA

Seek/Tune Time — — 60 ms/channel

SCLK Frequency fCLK 3-wire operation — — 2.5 MHz

fSCL 2-wire operation — — 400 kHz

Powerup Time From powerdown — — 110 ms

Pin Assignments

GND

PAD

GPIO1

RCLK

GND

LOUT

ROUT

RST

GND

SDIO

SCLK

GND

FMIP

RFGND

GPIO2

GPIO3

VIO

SEN

71098 11

17181920 16

Package Information

Table 1. Package Dimensions

Symbol Millimeters Symbol Millimeters

Min Nom Max Min Nom Max

A 0.50 0.55 0.60 f 2.53 BSC

A1 0.00 0.02 0.05 L 0.35 0.40 0.45

b 0.18 0.25 0.30 L1 0.00 — 0.10

c 0.27 0.32 0.37 aaa — — 0.10

D 3.00 BSC bbb — — 0.10

D2 1.65 1.70 1.75 ccc — — 0.08

e 0.50 BSC ddd — — 0.10

E 3.00 BSC eee — — 0.10

E2 1.65 1.70 1.75

Disclaimer

Silicon Laboratories intends to provide customers with the latest, accurate, and in-depth documentation of all peripherals and modules available for system and software implementers

using or intending to use the Silicon Laboratories products. Characterization data, available modules and peripherals, memory sizes and memory addresses refer to each specific

device, and "Typical" parameters provided can and do vary in different applications. Application examples described herein are for illustrative purposes only. Silicon Laboratories

reserves the right to make changes without further notice and limitation to product information, specifications, and descriptions herein, and does not give warranties as to the accuracy

or completeness of the included information. Silicon Laboratories shall have no liability for the consequences of use of the information supplied herein. This document does not imply

or express copyright licenses granted hereunder to design or fabricate any integrated circuits. The products must not be used within any Life Support System without the specific

written consent of Silicon Laboratories. A "Life Support System" is any product or system intended to support or sustain life and/or health, which, if it fails, can be reasonably expected

to result in significant personal injury or death. Silicon Laboratories products are generally not intended for military applications. Silicon Laboratories products shall under no

circumstances be used in weapons of mass destruction including (but not limited to) nuclear, biological or chemical weapons, or missiles capable of delivering such weapons.

Trademark Information

Silicon Laboratories Inc., Silicon Laboratories, Silicon Labs, SiLabs and the Silicon Labs logo, CMEMS®, EFM, EFM32, EFR, Energy Micro, Energy Micro logo and combinations

thereof, "the world’s most energy friendly microcontrollers", Ember®, EZLink®, EZMac®, EZRadio®, EZRadioPRO®, DSPLL®, ISOmodem ®, Precision32®, ProSLIC®, SiPHY®,

USBXpress® and others are trademarks or registered trademarks of Silicon Laboratories Inc. ARM, CORTEX, Cortex-M3 and THUMB are trademarks or registered trademarks of

ARM Holdings. Keil is a registered trademark of ARM Limited. All other products or brand names mentioned herein are trademarks of their respective holders.

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