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AD8231TCPZ-EP-R7

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P20
AD8231-EP
Rev. 0 | Page 13 of 20
G = +8
G = +32
G = +128
10µs/DIV20mV/DIV
09707-015
Figure 27. Instrumentation Amplifier Small Signal Pulse Response, G = 4, 16,
and 128, R
L
= 2 kΩ, C
L
= 500 pF
10µs/DIV0.001%/DIV
2V/DIV
3.95µs TO 0.01%
4µs TO 0.001%
09707-016
Figure 28. Instrumentation Amplifier Large Signal Pulse Response,
G = 1, V
S
= 5 V
10µs/DIV0.001%/DIV
2V/DIV
3.75µs TO 0.01%
3.8µs TO 0.001%
09707-017
Figure 29. Instrumentation Amplifier Large Signal Pulse Response,
G = 8, V
S
= 5 V
100µs/DIV0.001%/DIV
2V/DIV
17.6µs TO 0.01%
21.4µs TO 0.001%
09707-018
Figure 30. Instrumentation Amplifier Large Signal Pulse Response,
G = 128, V
S
= 5 V
25
20
15
10
5
0
1110010
SETTLING TIME (µs)
GAIN (V/V)
k
0.001%
0.01%
09707-019
Figure 31. Instrumentation Amplifier Settling Time vs.
Gain for a 4 V p-p Step, V
S
= 5 V
25
20
15
10
5
0
1110010
SETTLING TIME (µs)
GAIN (V/V)
k
0.001%
0.01%
09707-020
Figure 32. Instrumentation Amplifier Settling Time vs.
Gain for a 2 V p-p Step, V
S
= 3 V
AD8231-EP
Rev. 0 | Page 14 of 20
+
V
S
–V
S
+0.2
+0.4
+0.6
+0.8
+1.0
–1.0
–0.8
–0.6
–0.4
–0.2
0.1 1 10 100
OUTPUT VOLTAGE SWING REFERRED TO
SUPPLY VOLTAGES (V)
OUTPUT CURRENT (mA)
+25°C
–55°C
09707-233
+
V
S
–V
S
+0.2
+0.4
+0.6
+0.8
+1.0
–1.0
–0.8
–0.6
–0.4
–0.2
0.1 1 10 100
OUTPUT VOLTAGE SWING REFERRED TO
SUPPLY VOLTAGES (V)
OUTPUT CURRENT (mA)
+25°C
–55°C
09707-234
Figure 33. Instrumentation Amplifier Output Voltage Swing vs.
Output Current, V
S
= 3 V
Figure 34. Instrumentation Amplifier Output Voltage Swing vs.
Output Current, V
S
= 5 V
AD8231-EP
Rev. 0 | Page 15 of 20
OPERATIONAL AMPLIFIER PERFORMANCE CURVES
100
80
60
40
20
0
–20
–
90
–100
–110
–120
–130
–140
–150
10 10M1M100k10k1k100
OPEN-LOOP GAIN (dB)
OPEN-LOOP PHASE SHIFT (Degrees)
FREQUENCY (Hz)
R
L
= 10kΩ
C
L
= 200pF
76° PHASE
MARGIN
09707-021
Figure 35. Operational Amplifier Open-Loop Gain and Phase vs.
Frequency, V
S
= 5 V
100
80
60
40
20
0
–20
–
90
–100
–110
–120
–130
–140
–150
10 10M1M100k10k1k100
OPEN-LOOP GAIN (dB)
OPEN-LOOP PHASE SHIFT (Degrees)
FREQUENCY (Hz)
R
L
= 10kΩ
C
L
= 200pF
72° PHASE
MARGIN
09707-022
Figure 36. Operational Amplifier Open-Loop Gain and Phase vs.
Frequency, V
S
= 3 V
NO
LOAD
800pF
1nF
1.5nF
2nF
5µs/DIV20mV/DIV
09707-023
Figure 37. Operational Amplifier Small Signal Response for
Various Capacitive Loads, V
S
= 5 V
NO
LOAD
300pF
800pF
1nF
1.5nF
5µs/DIV20mV/DIV
09707-024
Figure 38. Operational Amplifier Small Signal Response for
Various Capacitive Loads, V
S
= 3 V
NO
LOAD
1nF║2kΩ
1.5nF║2kΩ
TIME (5µs/DIV)
OUTPUT VOLTAGE (0.5V/DIV)
09707-025
Figure 39. Operational Amplifier Large Signal Transient Response, V
S
= 5 V
NO
LOAD
1nF║2kΩ
1.5nF║2kΩ
TIME (5µs/DIV)
OUTPUT VOLTAGE (0.5V/DIV)
09707-026
Figure 40. Operational Amplifier Large Signal Transient Response, V
S
= 3 V
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P20

AD8231TCPZ-EP-R7

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Instrumentation Amplifiers Zero Drift Digitally Programmable
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