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AD1981HD Datasheet(PDF) 5 Page - Analog Devices

Part No. AD1981HD
Description  HD Audio SoundMAX Codec
Download  16 Pages
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Maker  AD [Analog Devices]
Homepage  http://www.analog.com
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AD1981HD Datasheet(HTML) 5 Page - Analog Devices

 
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AD1981HD
Rev. 0 | Page 5 of 16
Table 4. Programmable Gain Amplifier—ADC
Parameter
Min
Typ
Max
Unit
STEP SIZE
1.5
dB
PGA GAIN RANGE SPAN
0.0
22.5
dB
Table 5. Analog Mixer—Input Gain/Amplifiers/Attenuators
Parameter
Min
Typ
Max
Unit
SIGNAL-TO-NOISE RATIO (SNR)
Line In to Line Out
85
dB
Microphone In to Line Out1
80
dB
STEP SIZE: ALL MIXER INPUTS (Except PC BEEP)
1.5
dB
STEP SIZE: PC BEEP
3.0
dB
INPUT GAIN RANGE: ALL MIXER INPUTS (Except PC BEEP)
−34.5
+12.0
dB
DIGITAL PC BEEP
−45.0
0.0
dB
1 Guaranteed by design; not production tested.
Table 6. Digital Decimation and Interpolation Filters1
Parameter
Min
Typ
Max
Unit
PASS BAND
0
0.4 × FS
Hz
PASS-BAND RIPPLE
±0.09
dB
TRANSITION BAND
0.4 × FS
0.6 × FS
Hz
STOP BAND
0.6 × FS
Hz
STOP-BAND REJECTION
−74
dB
GROUP DELAY
16/FS
sec
GROUP DELAY VARIATION OVER PASS BAND
0
μs
1 Guaranteed by design; not production tested.
Table 7. Analog-to-Digital Converters
Parameter
Min
Typ
Max
Unit
RESOLUTION
20
Bits
TOTAL HARMONIC DISTORTION (THD)
−95
dB
DYNAMIC RANGE (−60 dB Input, THD + N Referenced to Full Scale, A-Weighted)
−85
dB
CROSSTALK: LINE INPUTS (Input L, Ground R, Read R; Input R, Ground L, Read L)
−80
dB
CROSSTALK: LINE INPUTS AND OTHER INPUTS
−100
−80
dB
GAIN ERROR (Full-Scale Span Relative to Nominal Input Voltage)
±10
%
INTERCHANNEL GAIN MISMATCH (Difference of Gain Errors)
±0.5
dB
ADC OFFSET ERROR
±5
mV
Table 8. Digital-to-Analog Converters
Parameter
Min
Typ
Max
Unit
RESOLUTION
24
Bits
TOTAL HARMONIC DISTORTION (Line Out)
−92
dB
TOTAL HARMONIC DISTORTION (Headphone Out)
−75
dB
DYNAMIC RANGE (−60 dB Input, THD + N Referenced to Full Scale, A-Weighted)
90
dB
GAIN ERROR (Full-Scale Span Relative to Nominal Input Voltage)
±10
%
INTERCHANNEL GAIN MISMATCH (Difference of Gain Errors)
±0.7
dB
DAC CROSSTALK1 (Input L, Zero R, Read R Out; Input R, Zero L, Read L Out)
−80
dB
1 Guaranteed by design; not production tested.


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