AD626
1000
100
V
S
= 5V
DUAL SUPPLY
CLOSED-LOOP GAIN
GAIN = 100
100
COMMON-MODE REJECTION – dB
95
90
85
V
S
= +5V
SINGLE SUPPLY
GAIN = 10
10
V
S
= 5V
DUAL SUPPLY
80
V
S
=
75
70
65
20
5
0
10
100
1k
10k
FREQUENCY – Hz
100k
1M
22
24
26
28
INPUT COMMON-MODE VOLTAGE – V
30
TPC 7. Closed-Loop Gain vs. Frequency
TPC 10. Common-Mode Rejection vs. Input
Common- Mode Voltage for Dual-Supply Operation
140
100
COMMON-MODE REJECTION – dB
COMMON-MODE REJECTION – dB
120
G = 10, 100
90
100
G = 10, 100
V
S
= +5
80
60
40
G = 10
V
S
= 5
20
0
0.1
G = 100
V
S
= 5
80
70
60
1
10
100
1k
FREQUENCY – Hz
10k
100k
1M
0
20
40
60
80
INPUT SOURCE RESISTANCE MISMATCH –
TPC 8. Common-Mode Rejection vs. Frequency
TPC 11. Common-Mode Rejection vs. Input Source
Resistance Mismatch
100
G = 10, 100
COMMON-MODE REJECTION – dB
95
90
ADDITIONAL GAIN ERROR – %
0.7
CURVE APPLIES TO
ALL SUPPLY VOLTAGES
AND GAINS BETWEEN 10 AND 100
0.6
0.5
0.4
0.3
85
80
V
S
= +5
75
70
65
–5
TOTAL GAIN ERROR =
GAIN ACCURACY (FROM SPEC TABLE)
+ ADDITIONAL GAIN ERROR
0.2
0.1
0.0
10
100
SOURCE RESISTANCE MISMATCH –
1k
0
5
10
15
20
INPUT COMMON-MODE VOLTAGE – V
25
TPC 9. Common-Mode Rejection vs. Input Common-
Mode Voltage for Single-Supply Operation
TPC 12. Additional Gain Error vs. Source
Resistance Mismatch
–6–
REV. D
AD [ ANALOG DEVICES ]
