OPA27CZ Datasheet, PDF (6/22 Pages) Texas Instruments – Ultra-Low Noise, Precision OPERATIONAL AMPLIFIERS

TYPICAL CHARACTERISTICS (Cont.)
At T_A = +25°C, ±V_CC = ±15VDC, unless otherwise noted.
INPUT VOLTAGE NOISE SPECTRAL DENSITY
10
8
6
4
2
0
1
10
100
1k
Frequency (Hz)
140
120
100
80
60
40
20
0
10
OPEN-LOOP FREQUENCY RESPONSE
OPA37
OPA27
100 1k 10k 100k 1M 10M 100M
Frequency (Hz)
BIAS AND OFFSET CURRENT vs TEMPERATURE
20
20
Bias
15
15
Offset
10
10
5
5
0
0
–75 –50 –25 0 +25 +50 +75 +100 +125
Ambient Temperature (°C)
50
40
30
20
10
0
–10
–20
10
OPA27 CLOSED-LOOP VOLTAGE GAIN AND
PHASE SHIFT vs FREQUENCY (G = 100)
Gain
0
–45
∅
–90
–135
–180
–225
100 1k 10k 100k 1M 10M 100M
Frequency (Hz)
OPA37 CLOSED-LOOP VOLTAGE GAIN AND
PHASE SHIFT vs FREQUENCY (G = 100)
50
40
0
30
20
G=5
10
0
Gain
–45
Ø
–90
–135
–180
–10
–225
–20
10 100 1k 10k 100k 1M 10M 100M
Frequency (Hz)
140
120
100
80
60
40
20
0
1
COMMON-MODE REJECTION vs FREQUENCY
OPA37
OPA27
10 100 1k 10k 100k 1M 10M
Frequency (Hz)
6
OPA27, OPA37
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