AD1987 데이터 시트보기 (PDF) - Analog Devices
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AD1987 Datasheet PDF : 20 Pages
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AD1987
Parameter
MICROPHONE BIAS
MIC_BIAS-B, MIC_BIAS-C
MIC_BIAS_IN (Pin 33) = +5 V or +3.3 V
MIC_BIAS_IN (Pin 33) = +5 V
MIC_BIAS_IN (Pin 33) = +3.3 V
VREF Setting = High-Z
VREF Setting = 0 V
VREF Setting = 50%
VREF Setting = 80%
VREF Setting = 100%
VREF Setting = 80%
VREF Setting = 100%
Min
Typ
Max
Unit
High-Z
0
V dc
1.65
V dc
3.7
V dc
3.9
V dc
2.86
V dc
3.0
V dc
MIC_BIAS-E (When enabled as BIAS)
VREF Setting = High-Z
VREF Setting = 0 V
VREF Setting = 50%
VREF Setting = 80%
VREF Setting = 100%
E Output Drive Current
GPIO 0 and GPIO 1
VREF Setting = 50%, 80%, or 100%
Input Signal High (VIH)
T Input Signal Low (VIL)
Output Signal High (VOH)
Output Signal Low (VOL)
Input Leakage Current (Signal High) (IIH)
E Input Leakage Current (Signal Low) (IIL)
POWER SUPPLY
IOUT = –500 μA
IOUT = +1500 μA
Analog (AVDD) 3.3 V ± 5%
Power Supply Range
L Power Dissipation
Supply Current
Digital (DVDD) 3.3 V ± 10%
Power Supply Range
O Power Dissipation
Supply Current
Digital I/O (DVIO) 3.3 V ± 10%
Power Supply Range
S Power Dissipation
Supply Current
Power Supply Rejection (Reference to fS 100 mV p-p Signal @ 1 kHz)1
1 Guaranteed but not tested.
B 2 Measurements reflect main ADC.
O 3 RMS values assume sine wave input.
High-Z
0
1.65
2.86
3.0
1.6
DVIO × 0.60
0
DVIO × 0.72
0
–150
–50
DVIO
DVIO × 0.24
DVIO
DVIO × 0.10
3.13
3.30
3.46
135
41
2.97
3.30
3.63
218
66
2.97
3.30
3.63
3.96
1.20
80
V dc
V dc
V dc
V dc
V dc
mA
V
V
V
V
μA
μA
V
mW
mA
V
mW
mA
V
mW
mA
dB
Rev. A | Page 6 of 20 | March 2008
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