AD74322DAR

更新时间： 2024-11-19 22:36:07

品牌	Logo	应用领域
亚德诺 - ADI		/
页数	文件大小	规格书
20页	122K
描述
Low Cost, Low Power Stereo Audio Analog Front End

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AD74322DAR 数据手册

LowCost,LowPower

Preliminary Technical Data

StereoAudioAnalogFrontEnd

AD74322

FEATURES

FUNCTIONALBLOCKDIAGRAM

2.5V Stereo Audio Codec w ith 3.3 V Tolerant Digital

Interface

Supports 96 kHz Sam ple Rates

Supports 16/ 18 / 20/ 24-Bit Word Lengths

Multibit Sigm a Delta Modulators w ith

“Perfect Differential Linearity Restoration” for

Reduced Idle Tones and Noise Floor

Data Directed Scram bling DACs - Least Sensitive to J itter

Perform ance (20 Hz to 20 kHz)

DVDD1(EXT) DVDD2(INT) CLKIN

AVDD

VIN1P

ADC

CDIN

CDOUT

CCLK

CHANNEL 1

Control

SPI

VIN1N

Block

Port

VIN2P

ADC

CLATCH

CHANNEL 2

VIN2N

ASDATA/SDO

DSDATA/SDI

LRCLK/SDIFS

SDOFS

VOUT1P

VOUT1N

VOUT2P

VOUT2N

DAC

90 dB ADC and DAC SNR

CHANNEL 1

I S

Digitally Program m able Input/ Output Gain

On-chip Volum e Controls Per Output Channel

Hardw are and Softw are Controllable Clickless Mute

Supports 256xFs, 512xF_sand 768xFs Master Mode Clocks

Master Clock Pre-Scaler for use w ith DSP m aster clocks

Flexible Serial Data Port w ith Right-J ustified, Left-

J ustified, I²S-Com patible and DSP Serial Port Modes

Supports Packed Data Mode (“TDM”) for cascading

devices.

Port

DAC

Reference

BCLK/SCLK

CHANNEL 2

REFCAP

AGND

AVDD

DGND

DVDD1(EXT) DVDD2(INT) CLKIN

ADC

CDIN

CDOUT

CCLK

VIN1

On-Chip Reference

16, 20 and 24-Lead SOIC, SSOP and TSSOP Package

options.

CHANNEL 1

Control

SPI

Block

Port

ADC

CLATCH

VIN2

CHANNEL 2

APPLICATIONS

Digital Video Cam corders (DVC)

Portable Audio Devices (Walkm an etc)

Audio Processing

Voice Processing

Conference Phones

ASDATA

DSDATA

LRCLK

DAC

VOUT1

VOUT2

CHANNEL 1

I S

Port

DAC

Reference

General Purpose Analog I/ O

BCLK

CHANNEL 2

G E NE R AL D E S C R IP T IO N

REFCAP

DGND

AGND

AVDD

T he AD74322 is a front-end processor for general purpose

audio and voice applications. It features two multi-bit Σ∆

A/D conversion channels and two multi-bit Σ∆ D/A

conversion channels. Each ADC channel provides >85 dB

signal-to-noise ratio while each DAC channel provides

>90 dB, both over an audio signal bandwidth.

DVDD1(EXT) DVDD2(INT) CLKIN

ADC

VIN1

CHANNEL 1

Control

Block

ADC

T he AD74322 is particularly suitable for a variety of ap-

plications where stereo input and output channels are

required, including audio sections of Digital Video

Camcorder, portable personal audio devices and the

analog front ends of conference phones . Its high quality

performance also make it suitable for speech and telephony

applications such as speech recognition and synthesis and

modern feature phones.

VIN2

CHANNEL 2

SDO

SDI

DAC

VOUT1

VOUT2

CHANNEL 1

Data

Port

SDIFS

SDOFS

SCLK

DAC

Reference

CHANNEL 2

REFCAP

AGND

DGND

REV. Pr D 03/00

Inform ation furnished by Analog Devices is believed to be accurate and

reliable. However, no responsibility is assum ed by Analog Devices for its

use, nor for any infringem ents of patents or other rights of third parties

which m ay result from its use. No license is granted by im plication or

otherwise under any patent or patent rights of Analog Devices.

One Technology Way, P.O. Box 9106, Norw ood, MA 02062-9106, U.S.A.

Tel: 781/ 329-4700

Fax: 781/ 326-8703

World Wide Web Site: http:/ / w w w.analog.com

Analog Devices, Inc., 1998

12 3 4 5 6 7...20

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与AD74322DAR相关器件

型号	品牌	获取价格	描述	数据表
AD74322DARU	ADI	获取价格	Low Cost, Low Power Stereo Audio Analog Front End
AD743AN	ADI	获取价格	Ultralow Noise BiFET Op Amp
AD743AQ	ADI	获取价格	IC OP-AMP, 1500 uV OFFSET-MAX, 4.5 MHz BAND WIDTH, CDIP8, CERDIP-8, Operational Amplifier
AD743AR	ADI	获取价格	IC OP-AMP, 800 uV OFFSET-MAX, 4.5 MHz BAND WIDTH, PDSO16, SOIC-16, Operational Amplifier
AD743AR-16	ADI	获取价格	IC OP-AMP, 1500 uV OFFSET-MAX, 4.5 MHz BAND WIDTH, PDSO16, SOIC-16, Operational Amplifier
AD743AR-16-REEL	ADI	获取价格	IC OP-AMP, 1500 uV OFFSET-MAX, 4.5 MHz BAND WIDTH, PDSO16, SOIC-16, Operational Amplifier
AD743BN	ETC	获取价格	Voltage-Feedback Operational Amplifier
AD743BQ	ADI	获取价格	Ultralow Noise BiFET Op Amp
AD743JN	ADI	获取价格	Ultralow Noise BiFET Op Amp
AD743JN	ROCHESTER	获取价格	OP-AMP, 1500uV OFFSET-MAX, 4.5MHz BAND WIDTH, PDIP8, PLASTIC, MO-095AA, DIP-8

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