AD1983

Rev. 0

Information furnished by Analog Devices is believed to be accurate and reliable. However, no

responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringements of patents or other

rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No

license is granted by implication or otherwise under any patent or patent rights of Analog Devices.

Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.

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

Tel: 781.329.4700

www.analog.com

Fax: 781.461.3113

©2006 Analog Devices, Inc. All rights reserved.

FEATURES

2 DAC channels: 16-, 20-, or 24-bit

2 ADC channels: 16- or 20-bit

HD audio sample rates

8 kHz, 11.025 kHz, 16 kHz, 22.05 kHz, 32 kHz,

44.1 kHz, 48 kHz

Greater than 90 dB dynamic range

S/PDIF output: 32 kHz, 44.1 kHz, or 48 kHz, 16- or 24-bit

Digital BEEP generator

Integrated headphone amplifiers

Selectable microphone inputs with preamplifiers

Stereo line level inputs

Full analog mixer

2 GPIOs for external circuit control, jack sense

32-lead, Pb-free LFCSP_VQ (QFN) package

ENHANCED FEATURES

No AFILT pins, results in BOM savings

Jack sensing autoconfiguration options

Mute line output and monaural output (MONO_OUT)

when headphones are used

Mute MONO_OUT when a device is in the line out jack

Selectable sense trip level: high/low supports all jack types

Peripheral identification/enumeration

Jack presence detection: HD Audio SENSE and GPIOs

Microphone to MONO_OUT for speakerphone

Advanced power management modes

2 software-controlled microphone bias pins

Stereo microphone array capture

Source from two different ports

0 dB, 10 dB, 20 dB, and 30 dB boost options

FUNCTIONAL BLOCK DIAGRAM

GPIO_0/JS_1

GPIO_1/JS_0

SENSE_A

S/PDIF_OUT

SENSE_SRC

GPIO

JACK

SENSE

20-BIT

48kHz

PCM/FLOAT32

Σ-Δ ADC

NID: 04

NID: 0C

NID: 0D

G

NID: 01

+3.3V

0dB TO +22.5dB

–34.5dB TO +12dB

SDATA_IN

BIT_CLK

RESET

SYNC

SDATA_OUT

Σ

GA

NID: 11

NID: 0E

GA

NID: 12

GA

NID: 13

NID: 09

MIC

BIAS

BIAS_EN

Z

MIC_BIAS-C

PORT-C

LINE IN

NID: 0F

NID: 0B

Σ

Σ

GA

M

NID: 07

MONO_OUT

OUTPUT_EN

–46.5dBTO +3dB

GA

M

NID: 05

PORT-D

FRONT

–46.5dBTO +3dB

BOOST

0dB, 10dB, 20dB, 30dB

NID: 10

DIGITAL

PCBEEP

0dB TO –45.0dB

3dB STEPS

G

M

M

M

–34.5dB TO +12dB

M

–34.5dB TO +12dB

M

NID: 03

NID: 02

NID: 0A

24-BIT

48kHz

PCM

Σ-Δ DAC

16-, 20-, 24-BIT

32kHz, 44.1kHz, 48kHz

PCM/AC3

S/PDIF TX

Z

Σ

OUTPUT_EN

GA

M

NID: 06

PORT-A

HEADPHONE

–46.5dBTO +3dB

+5.0V

HP

NID: 08

MIC

BIAS

BIAS_EN

Z

MIC_BIAS-B

PORT-B

MIC

BIAS_SEL

BIAS_SEL

Figure 1.