si4840 Silicon Laboratories, si4840 Datasheet

si4840

Manufacturer Part Number

si4840

Description

Broadcast Analog Tuning Digital Display Am/fm/sw Radio Receiver

Manufacturer

Silicon Laboratories

Datasheet

1.SI4840.pdf (2 pages)

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Current page: 1 of 2
Download datasheet (101Kb)

Description

The Si4840/44 is the first analog-tuned digital-display

(ATDD) CMOS AM/FM/SW radio receiver IC that integrates

the complete receiver function from antenna input to audio

output. The Si4840/44 implements Silicon Labs' proven

low-IF digital architecture, providing an easy and reliable

control interface while eliminating all the manual tuned

external components used in traditional solutions. The

architecture also provides the industry's leading receiver

performance, with excellent sensitivity and selectivity in all

supported

potentiometer to provide an analog-tuning interface, and

outputs

companion MCU / display driver via I

control interface. The device supports industry-leading

features for band selection, Bass/Treble boost, European

EN 55020/22 and U.S. FCC compliance, and advanced

audio conditioning for all signal environments to remove

pops, clicks, and abrasive static. The device also supports

interrupts for valid tuned frequencies and stereo/mono

signal quality. These features provide a superb and highly

reliable user experience. Like other successful audio

products

unmatched integration and PCB space savings with

minimum external components and small board area on a

single side PCB. The high integration and complete system

production test simplifies design-in, increases system

quality, and improves manufacturability. The receiver has

very low power consumption, runs off two AAA batteries,

and delivers the performance benefits of high performance

digital radio effect with digital display to the legacy analog-

tuned radio market.

AM/FM/SW Receiver

the

from

bands.

highly-accurate

ANT

Silicon

2.0~3.6V

The

XTALI

Broadcast Analog Tuning Digital Display AM/FM/SW Radio Receiver

VDD1/2

RFGND

Labs,

Si4840/44

AMI

FMI

tuned

the

C-compatible, 2-wire

LNA

AGC

REG

AFC

Si4840/44

frequency

uses

XTAL

OSC

0/90

simple

offers

ADC

Features

Applications

Worldwide FM band support (64–109 MHz)

Worldwide AM band support (504–1750 kHz)

SW band support (Si4844 only) (2.3–28.5 MHz)

Selectable support for all AM/FM/SW regional bands

2-wire control interface

Flexible Mono/Stereo control and programmability

Digital volume control support

Excellent real-world performance

Automatic frequency control (AFC)

EN55020 compliant

Minimal BOM components with no manual alignment

Two AAA batteries with 2.0 to 3.6 V supply voltage

Wide range of ferrite loop sticks and air loop antennas

24-pin SSOP package

RoHS compliant

Table and portable radios

Stereos

Mini/micro systems

Boomboxes

Clock radios

Modules

Entertainment systems

Toys, lamps, and any application needing an AM/FM

radio

INTERFACE

CONTROL

DSP

Si4830/34

Si484x

DAC

ADC

LOUT

ROUT

TUNE1/2

BAND

Si4840/44

6.13.2011

Related parts for si4840

si4840 Summary of contents

Page 1

... Broadcast Analog Tuning Digital Display AM/FM/SW Radio Receiver Description The Si4840/44 is the first analog-tuned digital-display (ATDD) CMOS AM/FM/SW radio receiver IC that integrates the complete receiver function from antenna input to audio output. The Si4840/44 implements Silicon Labs' proven low-IF digital architecture, providing an easy and reliable control interface while eliminating all the manual tuned external components used in traditional solutions ...

Page 2

... RFGND Min Nom Max e 0.635 BSC L 0.40 — 1.27 θ 0° — 8° aaa 0.20 bbb 0.18 ccc 0.10 ddd 0.10 Copyright © 2011 by Silicon Laboratories Si4840/44 Typ Max Units — 109 MHz 2.2 — µV EMF 105 — dBµV EMF 50 — — — — ...

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