ad1848 Analog Devices, Inc., ad1848 Datasheet - Page 2

• Manufacturer Part Number: ad1848
• Description: Parallel-port 16-bit Soundport Stereo Codec
• Manufacturer: Analog Devices, Inc.

AD1848K–SPECIFICATIONS
STANDARD TEST CONDITIONS UNLESS
OTHERWISE NOTED
Temperature
Digital Supply (V
Analog Supply (V
Word Rate (F
Input Signal
Analog Output Passband
ADC FFT Size
DAC FFT Size
V
V
V
V
ANALOG INPUT
Input Voltage (RMS Values Assume Sine Wave Input)
Input Impedance
Input Capacitance
PROGRAMMABLE GAIN AMPLIFIER—ADC
Step Size (0 dB to 22.5 dB)
PGA Gain Range Span*
AUXILIARY INPUT ANALOG AMPLIFIERS/ATTENUATORS
Auxiliary Gain/Attenuation Range Span*
Step Size (+12.0 dB to –33.0 dB)
Line
Mic with +20 dB Gain (MGE = 1)
Mic with 0 dB Gain (MGE = 0)
(All Steps Tested, –30 dB Input)
(All Steps Tested, –14.5 dB Input)
IH
IL
OH
OL
S
)
DD
CC
)
)
25
5.0
5.0
48
1008
20 Hz to 20 kHz
2048
8192
2.4
0.8
2.4
0.4
V
V
kHz
Hz
V
V
V
V
C
Min
2.6
0.26
2.6
20
Min
1.3
21.5
Min
1.3
45.5
–2–
DAC Input Conditions
ADC Input Conditions
Post-Autocalibrated
0 dB Attenuation
–2.0 dB Relative to Full Scale
16-Bit Linear Mode
No Output Load
Mute Off
Post-Autocalibrated
0 dB Gain
–3.0 dB Relative to Full Scale
Line Input
16-Bit Linear Mode
Typ
1
2.8
0.1
0.28
1
2.8
Typ
1.5
22.5
Typ
1.5
46.5
Max
3.0
0.3
3.0
15
Max
1.7
23.5
Max
1.7
47.5
Units
V rms
V p-p
V rms
V p-p
V rms
V p-p
k
pF
Units
dB
dB
Units
dB
dB
REV. 0