AD1981A Analog Devices, AD1981A Datasheet - Page 2

• Manufacturer Part Number: AD1981A
• Description: AD1981A AC'97 Soundmax Codec
• Manufacturer: Analog Devices

AD1981A–SPECIFICATIONS
STANDARD TEST CONDITIONS UNLESS OTHERWISE NOTED
Temperature
Digital Supply (DV
Analog Supply (V
Sample Rate (F
Input Signal
Analog Output Pass Band
V
V
V
V
Parameter
ANALOG INPUT
MASTER VOLUME
PROGRAMMABLE GAIN AMPLIFIER—ADC
ANALOG MIXER—INPUT GAIN/AMPLIFIERS/ATTENUATORS
DIGITAL DECIMATION AND INTERPOLATION FILTERS
IH
IL
IH
IL
Input Voltage (RMS values assume sine-wave input)
Input Impedance
Input Capacitance
Step Size (0 dB to –46.5 dB);
Output Attenuation Range
Step Size (0 dB to –46.5 dB); MONO_OUT
Output Attenuation Range
Step Size (0 dB to –46.5 dB); HP_OUT_R, HP_OUT_L
Output Attenuation Range
Mute Attenuation of 0 dB Fundamental
Step Size (0 dB to 22.5 dB)
PGA Gain Range
Signal-to-Noise Ratio (SNR)
Pass Band
Pass Band Ripple
Transition Band
Stop Band
Stop Band Rejection
Group Delay
Group Delay Variation over Pass Band
(ID0, ID1)
(ID0, ID1)
LINE_IN, AUX, CD, PHONE_IN
MIC_IN with 20 dB gain
MIC_IN with 0 dB gain
CD to LINE_OUT
Other to LINE_OUT
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
LINE_OUT_L, LINE_OUT_R
S
)
DD
DD
1
)
1
)
1
1
1
25°C
3.3 V
5.0 V
48 kHz
1008 Hz
20 Hz to 20 kHz
2.0 V
0.8 V
4.0 V
1.0 V
1
1
DAC Test Conditions
ADC Test Conditions
Calibrated
0 dB Gain/Attenuation Relative to Full Scale
0 dB Input
10 kΩ Output Load (LINE_OUT)
32 Ω Output Load (HP_OUT)
Calibrated
0 dB Gain
Input –3.0 dB Relative to Full Scale
Min
80
0
0.4 × F
0.6 × F
–74
S
S
Typ
1
2.83
0.1
0.283
1
2.83
20
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
0
S
Max
7.5
0.4 × F
± 0.09
0.6 × F
∞
S
S
Unit
Vrms
Vp-p
Vrms
Vp-p
Vrms
Vp-p
kΩ
pF
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
Hz
dB
Hz
Hz
dB
s
µs