AD626
–6–
1000
100
0
10 100 1M100k10k1k
10
FREQUENCY – Hz
CLOSED-LOOP GAIN
GAIN = 100
GAIN = 10
V
S
= ⴞ5V
DUAL SUPPLY
V
S
= +5V
SINGLE SUPPLY
V
S
= ⴞ5V
DUAL SUPPLY
TPC 7. Closed-Loop Gain vs. Frequency
140
0
1M
60
20
1
40
0.1
120
80
100
100k10k 1k100 10
FREQUENCY – Hz
COMMON-MODE REJECTION – dB
G = 10, 100
V
S
= +5
G = 100
V
S
= ⴞ5
G = 10
V
S
= ⴞ5
TPC 8. Common-Mode Rejection vs. Frequency
100
65
25
80
70
0
75
–5
95
85
90
20 15 10 5
INPUT COMMON-MODE VOLTAGE – V
COMMON-MODE REJECTION – dB
G = 10, 100
V
S
= +5
TPC 9. Common-Mode Rejection vs. Input Common-
Mode Voltage for Single-Supply Operation
100
65
30
80
70
22
75
20
95
85
90
28 26 24
INPUT COMMON-MODE VOLTAGE – V
COMMON-MODE REJECTION – dB
V
S
= ⴞ5
TPC 10. Common-Mode Rejection vs. Input
Common- Mode Voltage for Dual-Supply Operation
100
60
080
90
70
20
80
40
60
INPUT SOURCE RESISTANCE MISMATCH – ⍀
COMMON-MODE REJECTION – dB
G = 10, 100
TPC 11. Common-Mode Rejection vs. Input Source
Resistance Mismatch
0.6
10 100 1k
0.5
0.4
0.3
0.2
0.1
SOURCE RESISTANCE MISMATCH – ⍀
ADDITIONAL GAIN ERROR – %
0.7
0.0
TOTAL GAIN ERROR =
GAIN ACCURACY (FROM SPEC TABLE)
+ ADDITIONAL GAIN ERROR
CURVE APPLIES TO
ALL SUPPLY VOLTAGES
AND GAINS BETWEEN 10 AND 100
TPC 12. Additional Gain Error vs. Source
Resistance Mismatch
REV. D
