AD1821 Analog Devices, AD1821 Datasheet - Page 3

• Manufacturer Part Number: AD1821
• Manufacturer: Analog Devices

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ANALOG INPUT
Parameter
Full-Scale Input Voltage (RMS Values Assume Sine Wave Input)
PROGRAMMABLE GAIN AMPLIFIER—ADC
Parameter
Step Size (0 dB to 22.5 dB)
PGA Gain Range Span
CD, LINE, MICROPHONE, MODEM, SYNTHESIZER, AND VIDEO INPUT ANALOG GAIN/AMPLIFIERS, ATTENUATORS/
MUTE
Parameter
CD, LINE, MIC, SYNTH, VID, MDM_IN
PHONE_IN
SPECIFICATIONS
STANDARD TEST CONDITIONS UNLESS
OTHERWISE NOTED
Temperature
Digital Supply (V
Analog Supply (V
Sample Rate (F
Input Signal Frequency
Audio Output Passband
V
V
IH
IL
PHONE_IN, LINE, SYNTH, CD, VID, MDM_IN
MIC with +20 dB Gain (MGE = 1)
MIC with 0 dB Gain (MGE = 0)
Input Impedance*
Input Capacitance*
(All Steps Tested)
Step Size: (All Steps Tested)
Input Gain/Attenuation Range
Step Size 0 dB to –45 dB: (All Steps Tested)
Input Gain/Attenuation Range
+12 dB to –34.5 dB
S
)
DD
CC
)
)
25
5.0
5.0
48
1008
5.0
0
20 Hz to 20 kHz
V
V
kHz
Hz
V
V
C
–3–
Min
Min
Min
DAC Test Conditions
ADC Test Conditions
0 dB Attenuation
Input Full Scale
16-Bit Linear Mode
100 k Output Load
Mute Off
Measured at Line Output
0 dB Gain
Input –4 dB Relative to Full Scale
Line Input Selected
16-Bit Linear Mode
Typ
1
2.83
0.1
0.283
1
2.83
17
15
Typ
1.5
22.5
Typ
1.5
46.5
3.0
45
Max
Max
Max
AD1821
Units
V rms
V p-p
V rms
V p-p
V rms
V p-p
k
pF
Units
dB
dB
Units
dB
dB
dB
dB