AD1884 데이터 시트보기 (PDF) - Analog Devices

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AD1884

High Definition Audio SoundMAX® Codec

Analog Devices 

AD1884

POWER DOWN STATES

Parameter

Function Node in D0, All Nodes Active

Function Node in D31

Codec in RESET

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 Saves2

IDVDD Typ

58

21

3

IAVDD Typ

31

2

3

Unit

mA

mA

mA

6

5

mA

5

3

mA

0

2

mA

0

0.5

mA

1 Function node D3 state powers down all nodes except for the VREF, Mixer and MIC_BIAS nodes which have independent power controls. VREF should be kept active when

background functions such as jack presence detection or analog pass-through are required. Mixer should be kept active when analog pass-through is required. MIC_BIAS

can be disabled if microphones are not in use in the power-down state.

2 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 Hi-Z state. The

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

Rev. 0 | Page 7 of 16 | January 2007

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