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AD1987 Datasheet(PDF) 7 Page - Analog Devices

No. de pieza AD1987
Descripción Electrónicos  High Definition Audio SoundMAX Codec
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Fabricante Electrónico  AD [Analog Devices]
Página de inicio  http://www.analog.com
Logo AD - Analog Devices

AD1987 Datasheet(HTML) 7 Page - Analog Devices

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AD1987
Rev. 0
|
Page 7 of 18
|
May 2007
HD–AUDIO LINK SPECIFICATION
HD-audio signals comply with the High Definition audio speci-
fications. 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 D31
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.
21
1.2
mA
Codec in RESET
33mA
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 Saves
2, 3
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.
3 Test conditions: 30 pF load, 2.0 MHz frequency, 3.3 V AVDD.
6
5.3
0
0
5
3.2
2
0.5
mA
mA
mA
mA


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