Datasheet > AV2722

AV2722

更新时间： 2024-02-16 06:57:54

品牌	Logo	应用领域
其他 - ETC		解码器驱动器编解码器
页数	文件大小	规格书
29页	273K
描述
AUDIO CODEC WITH HEADPHONE DRIVER AND PROGRAMMABLE SAMPLE RATES

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中文翻译

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AV2722 数据手册

AV2722

AVS Technology

AUDIO CODEC WITH HEADPHONE DRIVER

AND PROGRAMMABLE SAMPLE RATES

FEATURES

• Complete DAC and ADC Audio CODEC with headphone

DESCRIPTION

driver.

• Up to 96kHz input sampling frequencies for ADC/DAC

• Selectable DAC De-emphasis Filter.

The AV2722 is a mixed signal CMOS monolithic device which

is a low cost audio CODEC designed with a built-in

headphone driver. It supports regular audio or USB mode

audio and is therefore ideal for portable MP3 audio and

speech players and recorders. It can also be used for mini-

disk, CD-RW machines.

• Selectable ADC High Pass Filter

• Programmable Audio Data Interface

• I²S, Normal, Left justified or DSP data for ADC/DAC

• 16,18, 20 and 24-bit input data resolution

• System clock: 64fs, 96fs,128fs, 192fs, 256fs or 384fs

• 250fs and 272fs system clock for USB application

• Master or Slave Clocking mode

Stereo line audio inputs with programmable gain are provided

A microphone bias voltage output is also provided which

makes the AV2722 ideal for an electret type microphone.

• Regular audio or USB mode audio

• 2 or 3-wire software control interface selectable by external

pin.

For the multi-bit signal delta DAC, 64X oversampling digital

interpolation filter is used with programmable de-emphasis,

volume control, and sampling rate selection features. The

DAC supports I2S, Normal, Left justified or DSP data with 16,

18, 20 and 24-bit resolution. Sampling rates from 8KHz to 192

KHz are supported. At the DAC output, stereo headphone

drivers are built in for driving headphones.

• 2 channel microphone or line inputs

• Programmable power down features to conserve power

GENERAL

• 2.7-volt to 3.6-volt Power Supply range (TBD)

• 28-pin SSOP package

APPLICATIONS

• Low cost, CD-quality consumer audio equipment

• Portable MP3 Players and Recorders

For the multi-bit delta-sigma ADC, programmable gain

are provided at the input. state of the art decimation filter is

used to down-sample the received signal and finally a

selectable high pass filter is used to reduce un-wanted low

frequency noise. The digital audio serial output can be

programmed at various formats similar to the DAC input.

ADVANCE PRODUCT INFORMATION.

AVS RESERVES THE RIGHT TO MODIFY THIS PRODUCT

WITHOUT NOTICE.

VDDA

XCK VDD

VDDH

HPDET

AOUTL

CLOCK GENERATOR

LOW

AUDIO

PASS

FILTER

HEADPHONE

DRIVER

DAC

INTERPOLATION

DIGITAL

MULTI-LEVEL

DELTA-SIGMA

MODULATOR

SERIAL

HOUTL

AOUTR

SDI

FILTER

INPUT

PORT

LOW

SFDA

PASS

FILTER

HEADPHONE

DRIVER

HOUTR

VCM

HPVR

VOLUME CONTROL

SFAD

GAIN

AUDIO

ADC

MULTI-LEVEL

HIGH

PASS

CONTROL

AINL

DECIMATION

DIGITAL

SERIAL

OUTPUT

PORT

DELTA-SIGMA

MODULATOR

GAIN

FILTER

SDO

FILTER

AINR

ADC

CONTROL

MICBIAS

2 OR 3 WIRE SERIAL COMMAND PORT

VSSA

RS/

MODE

VSSH

CSB

VSS

SCL

SDA

AV2722 BLOCK DIAGRAM

AVS Technology Inc.

1-29

January 22, 2004

4110 Clipper Ct., Fremont CA94538

Tel: (510) 353-0848

Fax: (510) 353-0856

12 3 4 5 6 7...29

中文翻译

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与AV2722相关器件

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AV-28.63636MAGH-T	ETC	获取价格	CRYSTAL 28.63636MHZ 15PF SMD
AV-28.63636MAGV-T	ETC	获取价格	CRYSTAL 28.63636MHZ 8PF SMD
AV-28.63636MAHV-T	ETC	获取价格	CRYSTAL 28.63636MHZ 8PF SMD
AV-28.63636MFHV-T	ETC	获取价格	CRYSTAL 28.63636MHZ 8PF SMD
AV2816A	APLUS	获取价格	single-chip synthesizing CMOS VLSI
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AV2822	AVICTEK	获取价格	DUAL LOW VOLTAGE POWER AMPLIFIER
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