AD1981B Datasheet, PDF (2/28 Pages) Analog Devices – AC ’97 SoundMAX Codec

AD1981B–SPECIFICATIONS
STANDARD TEST CONDITIONS, UNLESS
OTHERWISE NOTED
Temperature
25°C
Digital Supply (DV_DD)
Analog Supply (AV_DD)
Sample Rate (F_S)
Input Signal
3.3 V
5.0 V
48 kHz
1008 Hz
Analog Output Pass Band
20 Hz to 20 kHz
DAC Test Conditions
Calibrated
–3 dB Attenuation Relative to Full Scale
0 dB Input
10 kΩ Output Load (LINE_OUT)
32 Ω Output Load (HP_OUT)
ADC Test Conditions
Calibrated
0 dB Gain
Input –3.0 dB Relative to Full Scale
Parameter
ANALOG INPUT
Input Voltage (RMS Values Assume Sine Wave Input)
LINE_IN, AUX, CD, PHONE_IN
MIC_IN with +20 dB Gain
MIC_IN with 0 dB Gain
Input Impedance¹
Input Capacitance¹
MASTER VOLUME
Step Size (0 dB to –46.5 dB): LINE_OUT_L, LINE_OUT_R
Output Attenuation Range¹
Step Size (0 dB to –46.5 dB): MONO_OUT
Output Attenuation Range¹
Step Size (0 dB to –46.5 dB): HP_OUT_R, HP_OUT_L
Output Attenuation Range Span¹
Mute Attenuation of 0 dB Fundamental¹
PROGRAMMABLE GAIN AMPLIFIER—ADC
Step Size (0 dB to 22.5 dB)
PGA Gain Range
ANALOG MIXER—INPUT GAIN/AMPLIFIERS/ATTENUATORS
Signal-to-Noise Ratio (SNR)
CD to LINE_OUT
Other to LINE_OUT¹
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
Pass-Band Ripple
Transition Band
Stop Band
Stop-Band Rejection
Group Delay
Group Delay Variation over Pass Band
Min
80
0
0.4 Ï« f_S
0.6 Ï« f_S
–74
Typ
Max
1
2.83
0.1
0.283
1
2.83
20
5
7.5
1.5
46.5
1.5
46.5
1.5
46.5
1.5
22.5
90
90
1.5
46.5
16/f_S
0
0.4 Ï« f_S
± 0.09
0.6 Ï« f_S
ϱ
Unit
V rms
V p-p
V rms
V p-p
V rms
V p-p
kΩ
pF
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
Hz
dB
Hz
Hz
dB
sec
µs
–2–
REV. B