AD1987 데이터 시트보기 (PDF) - Analog Devices

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AD1987

High Definition Audio SoundMAX Codec

Analog Devices 

AD1987

HD AUDIO LINK SPECIFICATION

HD Audio signals comply with the High Definition Audio Spec-

ifications. Please refer to these specifications at:

http://www.intel.com/standards/hdaudio/

POWER-DOWN STATES

Parameter

IDVDD Typ

IAVDD Typ

Unit

Function Node in D0, All Nodes Active

66

41

mA

Function Node in D3

21

1.2

mA

Codec in RESET

3

3

mA

Individual Block Power Savings

DAC Pair Powered Down Saves (Each)

ADC Pair Powered Down Saves (Each)

Mixer Power Control (And Associated Amps) Saves

MIC_BIAS Powered Down Saves1, 2

6

5

mA

5.3

3.2

mA

0

2

mA

0

0.5

mA

1 Powering down the MIC_BIAS powers down all port MIC_BIAS pins. This disables all microphone bias circuits set to 100% or 50%, setting them to the high-Z state. The

E 0 Ω and high-Z states remain unaffected by the MIC_BIAS power state.

OBSOLET 2 Test conditions: 30 pF load, 2.0 MHz frequency, 3.3 V AVDD.

Rev. A | Page 7 of 20 | March 2008

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