ad1812 Analog Devices, Inc., ad1812 Datasheet - Page 2

• Manufacturer Part Number: ad1812
• Description: Soundport Controller
• Manufacturer: Analog Devices, Inc.

AD1812–SPECIFICATIONS
ANALOG INPUT
Parameter
Input Voltage (RMS Values Assume Sine Wave Input)
Input Impedance*
Input Capacitance*
PROGRAMMABLE GAIN AMPLIFIER—ADC
Parameter
Step Size (0 dB to 22.5 dB)
PGA Gain Range Span
AUXILIARY, LINE, MICROPHONE AND MONO INPUT ANALOG GAIN/AMPLIFIERS/ATTENUATORS
Parameter
Step Size: AUX1, AUX2, DACIN, LINE, MIC (All Steps Tested)
Input Gain/Attenuation Range: AUX1, AUX2, DACIN, LINE, MIC
Step Size: MONO_IN (All Steps Tested)
Input Gain/Attenuation Range: MONO_IN
DIGITAL DECIMATION AND INTERPOLATION FILTERS*
Parameter
Passband
Passband Ripple
Transition Band
Stopband
Stopband Rejection
Group Delay
Group Delay Variation Over Passband
*Guaranteed not tested.
Specifications subject to change without notice.
STANDARD TEST CONDITIONS UNLESS OTHERWISE NOTED
Temperature
Digital Supply (V
Analog Supply (V
Sample Rate (F
Input Signal
Analog Output Passband
V
V
V
V
IH
IL
OH
OL
LINE, AUX1, MONO_IN, AUX2, DACIN
MIC with +20 dB Gain (MGE = 1)
MIC with 0 dB Gain (MGE = 0)
(All Steps Tested)
(+12 dB to –30 dB)
(–31.5 dB to –34.5 dB)
(0 dB to –39 dB)
(–42 dB to –45 dB)
S
)
DD
CC
)
)
0
5.0
5.0
48
1008
20 Hz to 20 kHz
2.0
0.8
2.4
0.4
V
V
kHz
Hz
V
V
V
V
C
–2–
DAC Test Conditions
ADC Test Conditions
Min
2.55
0.250
2.55
10
Min
1.3
21.5
Min
1.25
1
45.0
2.5
2.2
43
Min
0
0.4
0.6
74
Calibrated
0 dB Attenuation
Input Full Scale
16-Bit Linear Mode
10 k Output Load
Mute Off
Calibrated
0 dB Gain
Input –1.0 dB Relative to Full Scale
Line Input Selected
16-Bit Linear Mode
F
F
S
S
Typ
1.5
22.5
Typ
1.5
1.5
46.5
3.0
3.0
45
Typ
Typ
1
2.83
0.1
0.283
1
2.83
17
Max
3.11
0.316
3.11
15
Max
1.7
23.5
Max
1.75
2.0
47.5
3.6
3.85
46
Max
0.4
0.6
15/F
0.0
0.1
S
F
F
S
S
V rms
V p-p
V rms
V rms
V p-p
pF
dB
dB
dB
dB
dB
dB
dB
dB
Hz
dB
Hz
Hz
dB
sec
Units
V p-p
k
Units
Units
Units
REV. 0
s