AD1981BL Analog Devices, AD1981BL Datasheet

AD1981BL

Manufacturer Part Number

AD1981BL

Description

Low Voltage AC'97 Soundmax Codec

Manufacturer

Analog Devices

Datasheet

1.AD1981BL.pdf (28 pages)

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Company:

Meier Automation Equipment Co., Limited

Part Number:

AD1981BLJSTZ

Manufacturer:

ADI/亚德诺

Quantity:

20 000

Company:

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Part Number:

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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. Trademarks and

registered trademarks are the property of their respective owners.

LINE_OUT_R

LINE_OUT_L

MONO_OUT

HP_OUT_R

HP_OUT_L

PHONE_IN

LINE_IN_R

LINE_IN_L

CD_GND

FEATURES

AC ’97 2.3 COMPATIBLE FEATURES

S/PDIF Output, 20 Bits Data Format, Supporting

Integrated Stereo Headphone Amplifier

Variable Sample Rate Audio

External Audio Power-Down Control

Greater than 90 dB Dynamic Range

Stereo Full-Duplex Codec

20-Bit PCM DAC

3 Analog Line-Level Stereo Inputs for

Mono Line-Level Phone Input

Dual MIC Input with Built-In Programmable Preamp

High Quality CD Input with Ground Sense

AUX_R

AUX_L

CD_L

CD_R

48 kHz and 44.1 kHz Sample Rates

Line-In, AUX, and CD

MIC1

MIC2

DIFF AMP

AD1981BL

MIC PREAMP

FUNCTIONAL BLOCK DIAGRAM

REFOUT

REF

REFERENCE

VOLTAGE

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

Tel: 781/329-4700

Fax: 781/326-8703

G = GAIN

A = ATTENUATION

M = MUTE

Z = HIGH Z

Mono Output for Speakerphone or Internal Speaker

48-Lead LQFP Package, Lead-Free Package Available

ENHANCED FEATURES

Stereo MIC Preamps Support

Built-In Digital Equalizer Function for Optimized

Full-Duplex Variable Sample Rates from 7040 Hz to

Jack Sense Pins Provide Automatic Output Switching

Software Programmed V

Low Power 3.3 V Operation for Analog and

Multiple Codec Configuration Options

Power Management Support

Speaker Sound

48 kHz with 1 Hz Resolution

Microphone and External Power Amp

Digital Supplies

AC ’97 SoundMAX

PCM FRONT

ADC RATE

DAC RATE

16-BIT

PCM L/R

16-BIT

20-BIT

- ADC

- DAC

CODEC CORE

REFOUT

XTL_OUT XTL_IN SPDIF

PLL

CONTROL LOGIC

ANALOG MIXING

Output for Biasing

LOGIC

SLOT

ADC

AND

DAC

JS0

AD1981BL

REGISTERS

CONTROL

AC '97

JS1

SPDIF

www.analog.com

EAPD

Codec

ID0

ID1

RESET

SYNC

BIT_CLK

SDATA_OUT

SDATA_IN

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