ad1881a Analog Devices, Inc., ad1881a Datasheet - Page 2

• Manufacturer Part Number: ad1881a
• Description: Ac?97 Soundmax Codec
• Manufacturer: Analog Devices, Inc.

STANDARD TEST CONDITIONS UNLESS OTHERWISE NOTED
AD1881A–SPECIFICATIONS
Temperature
Digital Supply (V
Analog Supply (V
Sample Rate (F
Input Signal
ANALOG INPUT
Parameter
Input Voltage (RMS Values Assume Sine Wave Input)
Input Impedance
Input Capacitance
MASTER VOLUME
Parameter
Step Size (0 dB to –94.5 dB); LINE_OUT_L, LINE_OUT_R
Output Attenuation Range Span
Step Size (0 dB to –46.5 dB); MONO_OUT
Output Attenuation Range Span
Mute Attenuation of 0 dB Fundamental
PROGRAMMABLE GAIN AMPLIFIER—ADC
Parameter
Step Size (0 dB to 22.5 dB)
PGA Gain Range Span
ANALOG MIXER—INPUT GAIN/AMPLIFIERS/ATTENUATORS
Parameter
Signal-to-Noise Ratio (SNR)
Step Size (+12 dB to –34.5 dB): (All Steps Tested)
Input Gain/Attenuation Range: MIC, LINE, AUX, CD, VIDEO, PHONE_IN, DAC
Step Size (0 dB to –45 dB): (All Steps Tested) PC_BEEP
Input Gain/Attenuation Range: PC_BEEP
Specifications subject to change without notice.
Guaranteed, not tested.
LINE_IN, AUX, CD, VIDEO, PHONE_IN, PC_BEEP
MIC with +20 dB Gain (M20 = 1)
MIC with 0 dB Gain (M20 = 0)
CD to LINE_OUT
Other to LINE_OUT
MIC, LINE_IN, AUX, CD, VIDEO, PHONE_IN, DAC
S
)
DD
CC
)
)
25
3.3
5.0
48
1008
°C
V
V
kHz
Hz
DAC Test Conditions
ADC Test Conditions
Calibrated
–3 dB Attenuation Relative to Full-Scale
Input 0 dB
10 kΩ Output Load
Calibrated
0 dB Gain
Input –3.0 dB Relative to Full-Scale
Min
Min
Min
Min
Typ
1
2.83
0.1
0.283
1
2.83
20
5
Typ
1.5
–94.5
1.5
–46.5
Typ
1.5
22.5
Typ
90
90
1.5
–46.5
3.0
–45
Max
7.5
Max
80
Max
Max
Unit
V rms
V p-p
V rms
V p-p
V rms
V p-p
kΩ
pF
Unit
dB
dB
dB
dB
dB
Unit
dB
dB
Unit
dB
dB
dB
dB
dB
dB