AD1847–SPECIFICATIONS
STANDARD TEST CONDITIONS UNLESS OTHERWISE NOTED
Temperature
Digital Supply (V
DD
)
Analog Supply (V
CC
)
Word Rate (F
S
)
Input Signal
Analog Output Passband
FFT Size
V
IH
V
IL
V
OH
V
OL
25
5.0
5.0
48
1007
20
4096
2.4
0.8
2.4
0.4
°C
V
V
kHz
Hz
Hz to 20 kHz
V
V
V
V
DAC Output Conditions
0 dB Attenuation
Full-Scale Digital Inputs
16-Bit Linear Mode
No Output Load
Mute Off
ADC Input Conditions
0 dB Gain
–3.0 dB Relative to Full Scale
Line Input
16-Bit Linear Mode
ANALOG INPUT
Min
Full-Scale Input Voltage (RMS Values Assume Sine Wave Input)
Line1, Line2, AUX1, AUX2
2.54
Input Impedance
Line1, Line2, AUX1, AUX2†
Input Capacitance†
PROGRAMMABLE GAIN AMPLIFIER—ADC
Typ
1
2.8
Max
Units
V rms
V p-p
kΩ
pF
3.10
10
15
Min
Step Size (All Steps Tested, –30 dB Input)
PGA Gain Range Span†
1.10
21.0
Typ
1.5
Max
1.90
24.0
Units
dB
dB
AUXILIARY INPUT ANALOG AMPLIFIERS/ATTENUATORS
Min
Step Size (+12 dB to –28.5 dB, Referenced to DAC Full Scale)
(–30 dB to –34.5 dB, Referenced to DAC Full Scale)
Input Gain/Attenuation Range Span†
AUX Input Impedance†
DIGITAL DECIMATION AND INTERPOLATION FILTERS†
Typ
1.5
1.5
Max
1.7
1.9
47.5
Units
dB
dB
dB
kΩ
1.3
1.1
45.5
10
Min
Passband
Passband Ripple
Transition Band
Stopband
Stopband Rejection
Group Delay
Group Delay Variation Over Passband
0
–0.1
0.4 F
S
0.6 F
S
74
Max
0.4 F
S
+0.1
0.6 F
S
∞
30/F
S
0
Units
Hz
dB
Hz
Hz
dB
µs
–2–
REV. B
AD [ ANALOG DEVICES ]
