Si476x Data Short Datasheet by Silicon Labs

SILIEDN LABS HHDWEW :, HIT,

AMI

LNA

XTAL1

FMXIP

WXI

FMI

LNA

ClK

Gen

XTAL2/

RCLK

DSP

FMO

FMAGC1

FMAGC2

CNTRL

IOUT

MXR PKD

QOUT

IQFS

IQCLK

DOUT

DFS

DCLK

RSTB

FMXIN

SDA

LOUT/

MPXOUT

ROUT

IF PKD

RDS

ADC

DAC

Si476x

0°/90°

VIO2

RF PKD

SCL

LNA

RF PKD

REG

RFREG

VIO1

INTB

XOUT

RFGND

ICIN

ICIP

ICON

ICOP

Si476x

High-Performance Automotive AM/FM Radio Receiver and

HD Radio Tuner

Description

The Si476x radio receiver family employs 100% RF CMOS

technology to bring outstanding receiver performance to

the automotive infotainment industry, which demands high

performance and quality.

The Si476x receiver family supports worldwide FM and AM

radio reception. Additional variants support weather band,

shortwave, longwave frequencies, and dual antenna FM

phase diversity reception.

The Si476x 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. All odd-numbered

variants in the family support AM/FM HD Radio channel

reception with digital (I2S) baseband I/Q outputs for

interface to a HD Radio demodulator/decoder.

The family leverages Silicon Laboratories’ patented digital

architecture, delivering superior RF performance and

interference rejection. The proven digital techniques

provide excellent sensitivity in weak signal environments,

and superb selectivity and inter-modulation immunity in

strong signal environments.

The solution offers dynamic AM/FM channel bandwidth

control, auto-calibrated digital tuning, and proven AM/FM

seek functionality based on multiple signal quality and

band parameters. The family offers highly flexible and

advanced audio processing including AM/FM noise

blanking, programmable soft mute, FM multi-path

mitigation, FM stereo-mono blend, and FM hi-cut. In

addition, the Si476x provides an integrated clock oscillator

or accepts a reference clock and an I2C-compatible, 2-wire

control interface. The Si476x receiver system specifies a

minimal bill of materials, resulting in a very small board

space requirement and making the solution ideal for any

automotive application from single tuner radios to multiple

tuner radios addressing companion TMC/AF reception/

scanning.

Features

-Worldwide FM band support (64–108 MHz)

-AM/FM HDR support

-Worldwide AM band support (520–1710 kHz)

-Advanced RDS/RBDS demodulator/decoder

-Digital FM MPX decoder

-Integrated FM active splitter

-Addresses companion AF/RDS data receiver

-Advanced AM/FM noise blankers

-Dynamic AM/FM channel bandwidth control

-Advanced FM hi-cut control

-Programmable FM stereo-mono blend

-Programmable AM/FM soft mute

-Full suite of signal metrics: RSSI, SNR, multi-path

interference, frequency offset, adjacent channel

strength, USN

-Analog and digital (I2S) audio outputs

-Digital (I2S) baseband AM/FM I/Q

-Analog FM MPX output

-Low-IF architecture

-Eliminates expensive 10.7 MHz IF ceramic filters

-On-chip AM/FM AGC with integrated resistor and

varactor banks

-Eliminates external pin diode attenuators and 

varactors

-1.5 to 5 V power supplies

-QFN 40, 6 x 6 x 0.85 mm

-Pb-free/RoHS compliant

-AEC-Q100 qualified

Applications

-OEM automotive infotainment systems

-Aftermarket car radio systems

-OEM automotive PND docking system

SILIEDN LABS

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

Si476x

High Performance Automotive AM/FM Radio Receiver and HD

Radio (HDR) Tuner

Selected Electrical Specifications

Parameter Test Conditions Min Typ Max Units

Ambient temperature –40 25 85 °C

Analog supply voltage 5 V (VA) 4.5 5 5.5 V

Digital supply voltage 3.3 V (VD) 2.7 3.3 3.6 V

Interface supply voltage (VIO1) 1.7 3.3 3.6 V

Interface supply voltage (VIO2) 1.2 3.3 3.6 V

Analog supply current — 130 — mA

Digital supply current — 60 — mA

Interface supply current (VIO1) — 90 — µA

Interface supply current (VIO2) — 20 — µA

Input frequency 64 108 MHz

Tune time —0.9 — ms

AF scan time — 7.5 — ms

Seek time/channel — 20 — ms

Max frequency deviation — 150 — kHz

Input frequency 510 1710 kHz

Seek time/channel — 55 — ms

Pin Assignment

IQCLK

IQFS

IOUT

QOUT

DIN

DFS

DCLK

BLEND/NC

WXI/NC 8

FMI 7

FMO 6

RFREG 5

RFGND 4

FMXIN 3

FMXIP 2

NC 1

NC 10

AMI 9

VIO1

INTB

DCLK2

DOUT2

RSTB

SDA

SCL

DFS2

FMAGC1 40

FMAGC2 39

ICIN 38

ICIP 37

DACREF 36

XTAL1 35

RCLK/

XTAL2 34

ROUT 33

LOUT/

MPXOUT 32

VA 31

DBYP

VIO2

GND PAD

Package Information

Symbol Millimeters Symbol Millimeters

Min Nom Max Min Nom Max

A 0.80 0.85 0.90 E 6.00 BSC

A1 0.00 0.02 0.05 E2 3.95 4.10 4.25

b 0.18 0.25 0.30 L 0.30 0.40 0.50

D 6.00 BSC L1 0.03 0.05 0.08

D2 3.95 4.10 4.25 aaa 0.10

e 0.50 BSC bbb 0.10

SILICON LABS

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.

http://www.silabs.com

Silicon Laboratories Inc.

400 West Cesar Chavez

Austin, TX 78701

USA

Smart.

Connected.

Energy-Friendly

Products

www.silabs.com/products Quality

www.silabs.com/quality Support and Community

community.silabs.com