AD8231_1 Datasheet, PDF (15/24 Pages) Analog Devices – Zero Drift, Digitally Programmable Instrumentation Amplifier

OPERATIONAL AMPLIFIER PERFORMANCE CURVES
100
–90
80
–100
60
–110
40
–120
76° PHASE
MARGIN
20
–130
0
R_L = 10kΩ
C_L = 200pF
–20
10
100
–140
–150
1k
10k
100k
1M
10M
FREQUENCY (Hz)
Figure 35. Operational Amplifier Open-Loop Gain and Phase vs.
Frequency, VS = 5 V
100
–90
80
–100
60
–110
40
–120
72° PHASE
MARGIN
20
–130
0
–140
R_L = 10kΩ
C_L = 200pF
–20
–150
10
100
1k
10k
100k
1M
10M
FREQUENCY (Hz)
Figure 36. Operational Amplifier Open-Loop Gain and Phase vs.
Frequency, VS = 3 V
1nF
800pF
2nF
NO
LOAD
1.5nF
AD8231
NO
LOAD
300pF
800pF
1nF
1.5nF
20mV/DIV
5µs/DIV
Figure 38. Operational Amplifier Small Signal Response for
Various Capacitive Loads, VS = 3 V
NO
LOAD
1nF║2kΩ
1.5nF║2kΩ
TIME (5µs/DIV)
Figure 39. Operational Amplifier Large Signal Transient Response, VS = 5 V
NO
LOAD
1nF║2kΩ
1.5nF║2kΩ
20mV/DIV
5µs/DIV
Figure 37. Operational Amplifier Small Signal Response for
Various Capacitive Loads, VS = 5 V
TIME (5µs/DIV)
Figure 40. Operational Amplifier Large Signal Transient Response, VS = 3 V
Rev. A | Page 15 of 24