SI4844 [SILICON]

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


型号：	SI4844
厂家：	SILICON
描述：	Broadcast Analog Tuning Digital Display AM/FM/SW Radio Receiver
文件：	总3页 (文件大小：1047K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

Si4840/44

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

Description

Features

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

- 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

supported bands. The Si4840/44 uses

potentiometer to provide an analog-tuning interface, and

outputs the highly-accurate tuned frequency to

simple

companion MCU / display driver via I²C-compatible, 2-wire

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 from Silicon Labs, the Si4840/44 offers

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.

- RoHS compliant

Applications

- Table and portable radios

- Stereos

- Mini/micro systems

- Boomboxes

- Clock radios

- Modules

- Entertainment systems

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

radio

Si484x

Si4830/34

ADC

DAC

AMI

LOUT

ROUT

ANT

LNA

DSP

RFGND

DAC

ANT

AGC

FMI

0/90

TUNE1/2

BAND

ADC

AFC

REG

XTALI

2.0~3.6V

CONTROL

INTERFACE

VDD1/2

XTAL

OSC

AM/FM/SW Receiver

6.13.2011

Si4840/44

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

Selected FM Electrical Specifications

Parameter

Input Frequency

Symbol

Conditions

Min

—

Typ

—

Max

109

—

Units

MHz

f_RF

Sensitivity

(S+N)/N = 26 dB

2.2

105

µV EMF

dBµV EMF

Input IP3

—

Adjacent Channel Selectivity

Alternate Channel Selectivity

Audio Output Voltage

Audio S/N

±200 kHz

±400 kHz

—

mV_RMS

—

Audio THD

0.1

0.5

Selected AM Electrical Specifications

Parameter

Input Frequency

Symbol

Conditions

Min

504

2.3

—

Typ

—

Max

1750

28.5

—

Units

kHz

f_RF

—

MHz

µV EMF

Sensitivity

(S+N)/N = 26 dB

0.1

—

Audio S/N

—

Audio Output Voltage

Audio THD

—

mV_RMS

—

0.5

Antenna Inductance

180

450

μH

Package Information

Pin Assignments

LOUT

ROUT

DBYP

VDD2

VDD1

XTALI

XTALO

LNA_EN

IRQ

TUNE1

TUNE2

BAND

FMI

SCLK

SDIO

RST

RFGND

Table 1. Package Dimensions

Dimension Min

Nom

—

Max

1.75

0.25

0.30

0.25

Dimension

Min

Nom

0.635 BSC

—

Max

GND

—

AMI

0.10

0.20

0.10

—

0.40

0°

1.27

8°

—

aaa

bbb

ccc

ddd

0.20

8.65 BSC

6.00 BSC

3.90 BSC

0.18

0.10

Notes:

1. All dimensions shown are in millimeters (mm) unless otherwise noted.

2. Dimensioning and Tolerancing per ANSI Y14.5M-1994.

3. This drawing conforms to the JEDEC Solid State Outline MO-137, Variation

AE.

4. Recommended card reflow profile is per the JEDEC/IPC J-STD-020

specification for Small Body Components.

AM/FM/SW Receiver

6.13.2011

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

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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.

Silicon Laboratories Inc.

400 West Cesar Chavez

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USA

http://www.silabs.com

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