Datasheet

AD8231
Rev. B | Page 11 of 24
50
40
30
20
10
0
–10
–20
–30
–40
100 10M1M100k10k1k
GAIN (dB)
FREQUENCY (Hz)
G = 128
G = 64
G = 32
G = 16
G = 8
G = 4
G = 2
G = 1
06586-009
Figure 15. Instrumentation Amplifier Gain vs. Frequency
1000
–1000
–800
–600
–400
–200
0
200
400
600
800
–40 –20 0 20 40 60 80 100 120
GAIN DRIFT (ppm)
TEMPERATURE (°C)
06586-116
G = 1
G = 2
G = 4
G = 8
G = 16
G = 32
G = 64
G = 128
Figure 16. Instrumentation Amplifier Gain Drift vs. Temperature
140
120
100
80
60
40
10 100 1k 10k 100k
CMRR (dB)
FREQUENCY (Hz)
G = 1
G = 8
G = 128
06586-010
Figure 17. Instrumentation Amplifier CMRR vs. Frequency
20
–20
–15
–10
–5
0
5
10
15
–40 –20 0 20 40 60 80 100 120
CMRR (µV/V)
TEMPERATURE (°C)
06586-118
G = 1
G = 1
G = 8
G = 8
G = 128
G = 128
REPRESENTATIVE SAMPLES
Figure 18. Instrumentation Amplifier CMRR vs. Temperature
140
120
100
80
60
40
20
0
1 100k10k1k10010
POSITIVE PSRR (dB)
FREQUENCY (Hz)
06586-146
G = 1
G = 8
G = 128
Figure 19. Instrumentation Amplifier Positive PSRR vs. Frequency
140
120
100
80
60
40
20
0
1 100k100k1k10010
NEGATIVE PSRR (dB)
FREQUENCY (Hz)
06586-147
G = 1
G = 8
G = 128
Figure 20. Instrumentation Amplifier Negative PSRR vs. Frequency