Datasheet

Data Sheet AD7656-1/AD7657-1/AD7658-1
Rev. D | Page 17 of 32
120
60
0
FREQUENCY OF INPUT NOISE (kHz)
CHANNEL-TO-CHANNEL ISOLATION (dB)
AV
CC
/DV
CC
/V
DRIVE
= 5V
V
DD
/V
SS
= ±12V
T
A
= 25°C
INTERNAL REFERENCE
±2 × V
REF
RANGE
30kHz ON SELECTED CHANNEL
110
100
90
80
70
20 40 60 80 100 120 140
07017-022
Figure 22. Channel-to-Channel Isolation vs. Frequency of Input Noise
10
12
14
16
18
20
22
–40 –20 0 20 40 60 80 100 120
TEMPERATURE (°C)
DYNAMIC CURRENT (mA)
±5V RANGE
±10V RANGE
AV
CC
/DV
CC
/V
DRIVE
= 5V
f
SAMPLE
= 250kSPS
FOR ±5V RANGE V
DD
/V
SS
= ±12V
FOR ±10V RANGE V
DD
/V
SS
= ±16.5V
07017-023
Figure 23. Dynamic Current vs. Temperature
95
60
30
07017-036
SUPPLY RIPPLE FREQUENCY (kHz)
PSRR (dB)
90
85
80
75
70
65
70 110 150
190
230
f
SAMPLE
= 250kSPS
±2 × V
REF
RANGE
INTERNAL REFERENCE
T
A
= 25°C
f
IN
= 10kHz
1µF ON AV
CC
SUPPLY PIN
±100mV SUPPLY RIPPLE AMPLITUDE
Figure 24. PSRR vs. Supply Ripple Frequency for AV
CC
Supply