Datasheet

AD7864
Rev. D | Page 3 of 28
SPECIFICATIONS
V
DD
= 5 V ± 5%, AGND = DGND = 0 V, V
REF
= internal, clock = internal; all specifications T
MIN
to T
MAX
, unless otherwise noted.
Table 1.
Parameter A Version
1
B Version Unit Test Conditions/Comments
SAMPLE AND HOLD
−3 dB Full Power Bandwidth 3 3 MHz typ
Aperture Delay 20 20 ns max
Aperture Jitter 50 50 ps max
Aperture Delay Matching 4 4 ns max
DYNAMIC PERFORMANCE
2
f
IN
= 100.0 kHz, f
S
= 500 kSPS
Signal-to-(Noise + Distortion) Ratio
3
@ 25°C 70 72 dB min
T
MIN
to T
MAX
70 70 dB min
Total Harmonic Distortion
3
−80 −80 dB max
Peak Harmonic or Spurious Noise
3
−80 −80 dB max
Intermodulation Distortion
3
fa = 49 kHz, fb = 50 kHz
Second-Order Terms −80 −80 dB typ
Third-Order Terms −80 −80 dB typ
Channel-to-Channel Isolation
3
−80 −80 dB max f
IN
= 50 kHz sine wave
DC ACCURACY Any channel
Resolution 12 12 Bits
Relative Accuracy
3
±1 ±1/2 LSB max
Differential Nonlinearity
3
±0.9 ±0.9 LSB max No missing codes
AD7864-1
Positive Gain Error
3
±3 ±3 LSB max
Positive Gain Error Match
3
+3 ±3 LSB max
Negative Gain Error
3
±3 ±3 LSB max
Negative Gain Error Match
3
+3 ±3 LSB max
Bipolar Zero Error ±4 ±3 LSB max
Bipolar Zero Error Match +2 ±2 LSB max
AD7864-3
Positive Gain Error
3
±3 LSB max
Positive Gain Error Match
3
2 LSB max
Negative Gain Error
3
±3 LSB max
Negative Gain Error Match
3
2 LSB max
Bipolar Zero Error ±3 LSB max
Bipolar Zero Error Match 2 LSB max
AD7864-2
Positive Gain Error
3
±3 LSB max
Positive Gain Error Match
3
3 LSB max
Unipolar Offset Error ±3 LSB max
Unipolar Offset Error Match 2 LSB max
ANALOG INPUTS
AD7864-1
Input Voltage Range ±5, ±10 ±5, ±10 V
Input Resistance 9, 18 9, 18 kΩ min
AD7864-3
Input Voltage Range ±2.5 ±2.5 V
Input Resistance 4.5 4.5 kΩ min