AD73322LARU datasheet, PDF - EEWORLD Datasheet

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AD73322LARU: Descriptionlow cost, low power cmos general-purpose dual analog front end; Categorysemiconductor Discrete semiconductor; File Size419KB，40 Pages; ManufacturerADI; Websitehttps://www.analog.com; Environmental Compliance

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AD73322LARU Overview

low cost, low power cmos general-purpose dual analog front end

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Low Cost, Low Power CMOS

General-Purpose Dual Analog Front End

AD73322L

FUNCTIONAL BLOCK DIAGRAM

AVDD1 AVDD2

DVDD

FEATURES

Two 16-Bit A/D Converters

Two 16-Bit D/A Converters

Programmable Input/Output Sample Rates

78 dB ADC SNR

78 dB DAC SNR

64 kS/s Maximum Sample Rate

–90 dB Crosstalk

Low Group Delay (25 s Typ per ADC Channel,

50 s Typ per DAC Channel)

Programmable Input/Output Gain

Flexible Serial Port which Allows Up to Four Dual

Codecs to be Connected in Cascade Giving Eight

I/O Channels

Single (2.7 V to 3.3 V) Supply Operation

50 mW Typ Power Consumption at 3.0 V

Temperature Range: –40 C to +105 C

On-Chip Reference

28-Lead SOIC, TSSOP, and 44-Lead LQFP Packages

APPLICATIONS

General-Purpose Analog I/O

Speech Processing

Cordless and Personal Communications

Telephony

Active Control of Sound and Vibration

Data Communications

Wireless Local Loop

AD73322L

VFBP1

VINP1

VINN1

VFBN1

VOUTP1

VOUTN1

REFOUT

REFCAP

VFBP2

VINP2

VINN2

VFBN2

VOUTP2

VOUTN2

ADC CHANNEL 1

SDI

SDIFS

DAC CHANNEL 1

SPORT

REFERENCE

SCLK

RESET

ADC CHANNEL 2

MCLK

SDOFS

DAC CHANNEL 2

SDO

AGND1 AGND2

DGND

GENERAL DESCRIPTION

The AD73322L is a dual front-end processor for general pur-

pose applications including speech and telephony. It features

two 16-bit A/D conversion channels and two 16-bit D/A con-

version channels. Each channel provides 78 dB signal-to-noise

ratio over a voiceband signal bandwidth. It also features an

input-to-output gain network in both the analog and digital

domains. This is featured on both codecs and can be used for

impedance matching or scaling when interfacing to Subscriber

Line Interface Circuits (SLICs).

The AD73322L is particularly suitable for a variety of applica-

tions in the speech and telephony area, including low bit rate,

high quality compression, speech enhancement, recognition and

synthesis. The low group delay characteristic of the part makes

it suitable for single or multichannel active control applications.

The A/D and D/A conversion channels feature programmable

input/output gains with ranges 38 dB and 21 dB respectively.

An on-chip reference voltage is included to allow single-

supply operation.

The sampling rate of the codecs is programmable with four

separate settings offering 64 kHz, 32 kHz, 16 kHz, and 8 kHz

sampling rates (from a master clock of 16.384 MHz).

A serial port (SPORT) allows easy interfacing of single or cas-

caded devices to industry standard DSP engines. The SPORT

transfer rate is programmable to allow interfacing to both fast

and slow DSP engines.

The AD73322L is available in 28-lead SOIC, 28-lead TSSOP,

and 44-lead LQFP packages.

REV. 0

Information furnished by Analog Devices is believed to be accurate and

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

use, nor for any infringements of patents or other rights of third parties that

may result from its use. No license is granted by implication or otherwise

under any patent or patent rights of Analog Devices.

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

Tel: 781/329-4700

www.analog.com

Fax: 781/326-8703

AD73322LARU Related Products

	AD73322LARU	AD73322L	AD73322LYR	AD73322LAR	AD73322LYST	AD73322LAST	AD73322LYRU
Description	low cost, low power cmos general-purpose dual analog front end	low cost, low power cmos general-purpose dual analog front end	low cost, low power cmos general-purpose dual analog front end	low cost, low power cmos general-purpose dual analog front end	low cost, low power cmos general-purpose dual analog front end	low cost, low power cmos general-purpose dual analog front end	low cost, low power cmos general-purpose dual analog front end

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