AD1981BBSTZ Datasheet, PDF (4/32 Pages) Analog Devices – AC 97 SoundMAX Codec

AD1981B
Parameter
Step Size (+12 dB to −34.5 dB) (All Steps Tested):
MIC_IN, LINE_IN, CD, AUX, PHONE_IN, DAC
Input Gain/Attenuation Range:
MIC_IN, LINE_IN, CD, AUX, PHONE_IN, DAC
DIGITAL DECIMATION AND INTERPOLATION FILTERS¹
Pass Band
OPass-Band Ripple
Transition Band
Stop Band
Stop-Band Rejection
Group Delay
B^{Group Delay Variation over Pass Band}
ANALOG-TO-DIGITAL CONVERTERS
Resolution
Total Harmonic Distortion (THD)
Dynamic Range (−60 dB Input THD + N Referenced to Full Scale, A-Weighted)
S ^{Signal-to-Intermodulation Distortion1 (CCIF Method)}
ADC Crosstalk¹
Line Inputs (Input L, Ground R, Read R; Input R, Ground L, Read L)
Line_In to Other
Gain Error² (Full-Scale Span Relative to Nominal Input Voltage)
O Interchannel Gain Mismatch (Difference of Gain Errors)
ADC Offset Error¹
DIGITAL-TO-ANALOG CONVERTERS
Resolution
Total Harmonic Distortion (THD) LINE_OUT
Total Harmonic Distortion (THD) HP_OUT
L _{Dynamic Range (−60 dB Input THD + N Referenced to Full Scale, A-Weighted)}
Signal-to-Intermodulation Distortion¹ (CCIF Method)
Gain Error² (Output FS Voltage Relative to Nominal Output FS Voltage)
Interchannel Gain Mismatch (Difference of Gain Errors)
E DAC Crosstalk1 (Input L, Zero R, Measure R_OUT; Input R, Zero L, Measure
L_OUT)
Total Audible Out-of-Band Energy¹ (Measured from 0.6 × fS to 20 kHz)
ANALOG OUTPUT
Full-Scale Output Voltage; LINE_OUT and MONO_OUT
T _{Output Impedance1}
External Load Impedance¹
E ^{Output Capacitance1}
Min
0
0.4 × fS
0.6 × fS
−74
80
85
10
Typ
1.5
46.5
16/fS
0
16
−84
85
85
−80
−100
20
−85
−75
90
−100
±10
−40
1
2.83
15
Max
0.4 × fS
±0.09
0.6 × fS
∞
−80
±10
± 0.5
±5
±0.7
−80
800
Unit
dB
dB
Hz
dB
Hz
Hz
dB
s
µs
Bits
dB
dB
dB
dB
dB
%
dB
mV
Bits
dB
dB
dB
dB
%
dB
dB
dB
V rms
V p-p
Ω
kΩ
pF
External Load Capacitance¹
100
pF
Full-Scale Output Voltage; HP_OUT (0 dB Gain)
1
V rms
External Load Impedance¹
32
Ω
VREF
2.05
2.25
2.45
V
VREFOUT (Programmable to 3.70 V Nominal)
2.25
V
VREFOUT Current Drive
5
mA
Mute Click (Muted Output Minus Unmuted Midscale DAC Output)
±5
mV
STATIC DIGITAL SPECIFICATIONS
High Level Input Voltage (VIH): Digital Inputs
0.65 × DVDD
V
Low Level Input Voltage (VIL)
0.35 × DVDD V
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