AD7863
Rev. B | Page 3 of 24
SPECIFICATIONS
VDD = 5 V ± 5%, AGND = DGND = 0 V, REF = Internal. All specifications TMIN to TMAX, unless otherwise noted.
Table 1.
Parameter
Unit
Test Conditions/Comments
SAMPLE AND HOLD
3 dB Small Signal Bandwidth
7
MHz typ
35
ns max
50
ps typ
350
ps max
fIN = 80.0 kHz, fS = 175 kSPS
Signal-to-(Noise + Distortion) Ratio
4@ 25°C
78
dB min
TMIN to TMAX
77
dB min
Total Harmonic Distor
tion482
dB max
87 dB typ
Peak Harmonic or Spurious
Noise482
dB max
90 dB typ
Intermodulation Distor
tion4fa = 49 kHz, fb = 50 kHz
Second Order Terms
93
dB typ
Third Order Terms
89
dB typ
Channel-to-Channel Isolat
ion486
dB typ
fIN = 50 kHz sine wave
DC ACCURACY
Any channel
Resolution
14
Bits
Minimum Resolution for Which No
Missing Codes are Guaranteed
14
Bits
±2.5
±2
LSB max
Differential Nonlinearity
4+2 to 1
LSB max
AD7863-10, AD7863-3
±10
±8
LSB max
Positive Gain Error Matc
h410
LSB max
±10
±8
LSB max
Negative Gain Error Matc
h410
LSB max
Bipolar Zero Error
±10
±8
LSB max
Bipolar Zero Error Match
8
6
LSB max
AD7863-2
±14
LSB max
Positive Gain Error Matc
h416
LSB max
Unipolar Offset Error
±14
LSB max
Unipolar Offset Error Match
10
LSB max
ANALOG INPUTS
AD7863-10
Input Voltage Range
±10
V
Input Resistance
9
kΩ typ
AD7863-3
Input Voltage Range
±2.5
V
Input Resistance
3
kΩ typ
AD7863-2
Input Voltage Range
2.5
V
Input Current
100
nA max