Datasheet

AD8231
Rev. B | Page 12 of 24
G = +1, 1µV/DIV
G = +128, 0.4µV/DIV
1s/DIV
06586-012
Figure 21. Instrumentation Amplifier 0.1 Hz to 10 Hz Noise
100
80
60
40
20
90
70
50
30
10
0
1 10 100 1k
NOISE (nV/ Hz)
FREQUENCY (Hz)
G = +1
G = +8
G = +128
06586-011
Figure 22. Instrumentation Amplifier Voltage Noise Spectral Density vs.
Frequency, 5 V, 1 Hz to 1000 Hz
1000
900
800
700
600
500
400
300
200
100
0
1 10 100 1k 10k 100k
NOISE (nV/ Hz)
FREQUENCY (Hz)
G = +1
G = +8
G = +128
06586-008
Figure 23. Instrumentation Amplifier Voltage Noise Spectral Density vs.
Frequency, 5 V, 1 Hz to 1 MHz
100
10
1
0.1
0.01
1110k1k10010
CURRENT NOISE (pA/ Hz)
FREQUENCY (Hz)
00k
06586-107
Figure 24. Instrumentation Amplifier Current Noise Spectral Density
5µs/DIV20mV/DIV
06586-013
Figure 25. Instrumentation Amplifier Small Signal Pulse Response, G = 1,
R
L
= 2 kΩ, C
L
= 500 pF
NO
LOAD
300pF
500pF
800pF
4µs/DIV20mV/DIV
06586-014
Figure 26. Instrumentation Amplifier Small Signal Pulse Response for Various
Capacitive Loads, G = 1