AD1987 데이터 시트보기 (PDF) - Analog Devices
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AD1987 Datasheet PDF : 20 Pages
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AD1987
SPECIFICATIONS
TEST CONDITIONS
Parameter
Test Condition
Temperature
Digital Supply
25°C
3.3 V
Analog Supply
3.3 V
MIC_BIAS_IN (via Low-Pass Filter) 5.0 V
Sample Rate fS
48 kHz
Input Signal (Frequency Sine Wave) 1008 Hz
Amplitude for THD + N
–3.0 dB Full Scale
Analog Output Pass Band
DAC
ADC
E PERFORMANCE
20 Hz to 20 kHz
10 kΩ Output Load: Line Out Tests
32 Ω Output Load: Headphone Tests
0 dB Gain
Parameter
T Line Out Drive (10 kΩ loads—DAC to Pin)
Total Harmonic Distortion (THD + N)
Dynamic Range (–60 dB in ref to fS A-Weighted)
Signal-to-Noise Ratio
E Headphone Drive (32 Ω loads—DAC to Pin)
Total Harmonic Distortion (THD + N)
Dynamic Range (–60 dB in ref to fS A-Weighted)
Signal-to-Noise Ratio
L Input Ports (Mic Boost = 0 dB)
Total Harmonic Distortion (THD + N)
Dynamic Range (–60 dB in ref to fS A-Weighted)
Signal-to-Noise Ratio
O GENERAL SPECIFICATIONS
Parameter
S DIGITAL DECIMATION AND INTERPOLATION FILTERS1—fS = 8 kHz to 192 kHz
Pass Band
Pass-Band Ripple
Stop Band
B Stop-Band Rejection
Group Delay
Group Delay Variation Over Pass Band
O ANALOG-TO-DIGITAL CONVERTERS
Min
Typ
Max
–85
95
95
–83
95
95
–81
90
90
Min
Typ
0
0.6 fS
20
0
Max
0.4 fS
±0.005
–100
Resolution
24
Gain Error (Full-Scale Span Relative to Nominal Input Voltage)2
±10
Interchannel Gain Mismatch (Difference of Gain Errors)
±0.2
±0.5
ADC Offset Error1
±5
ADC Crosstalk1
Line Inputs (Input L, Ground R, Read R; Input R, Ground L, Read L)
–85
Line_In to Other
–100
–80
Unit
dB
dB
dB
dB
dB
dB
dB
dB
dB
Unit
Hz
dB
Hz
dB
1/fS
μs
Bits
%
dB
mV
dB
dB
Rev. A | Page 4 of 20 | March 2008
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