Datasheet

®
OPA121
4
11k10 100 10k 100k 1M 10M
Frequency (Hz)
0
20
40
60
80
100
120
140
Voltage Gain (dB)
OPEN-LOOP FREQUENCY RESPONSE
KM
–180
–135
–90
–45
Phase Shift (Degrees)
Phase
Margin
≈ 65°
Ø
Gain
∼
∼
11k10 100 10k 100k 1M 10M
Frequency (Hz)
0
20
40
60
80
100
120
140
Common-Mode Rejection (dB)
COMMON-MODE REJECTION
vs FREQUENCY
KM
11k10 100 10k 100k 1M 10M
Frequency (Hz)
0
20
40
60
80
100
120
140
Power Supply Rejection (dB)
POWER SUPPLY REJECTION
vs FREQUENCY
–15 –10 –5 0 +5 +10 +15
Common-Mode Voltage (V)
0.01
10
1
0.1
Bias Current (pA)
BIAS AND OFFSET CURRENT
vs INPUT COMMON-MODE VOLTAGE
0.01
10
1
0.1
Offset Current (pA)
Bias Current
Offset Current
KM
–50 –25 0 +25 +50 +75 +125
Ambient Temperature (°C)
0.01
1k
100
0.1
Bias Current (pA)
BIAS AND OFFSET CURRENT
vs TEMPERATURE
+100
1
10
0.01
1k
100
0.1
Offset Current (pA)
1
10
KM
1 10 100 1k 10k 100k 1M
Frequency (Hz)
1
1k
100
10
Voltage Noise (nV/√Hz)
INPUT VOLTAGE NOISE SPECTRAL DENSITY
KP, KU
KM
TYPICAL PERFORMANCE CURVES
T
A
= +25°C, V
CC
= ±15VDC unless otherwise noted.