OPA227_07 Datasheet, PDF (6/27 Pages) Texas Instruments – High Precision, Low Noise OPERATIONAL AMPLIFIERS

TYPICAL PERFORMANCE CURVES (CONT)
At T_A = +25°C, R_L =10kΩ, and V_S = ±15V, unless otherwise noted.
INPUT NOISE VOLTAGE vs TIME
1s/div
CHANNEL SEPARATION vs FREQUENCY
140
120
100
80
Dual and quad devices. G = 1, all channels.
Quad measured Channel A to D, or B to C;
60 _{other combinations yield similiar or improved}
rejection.
40
10
100
1k
10k
100k
1M
Frequency (Hz)
VOLTAGE NOISE DISTRIBUTION (10Hz)
24
16
8
0
0 3.16 3.25 3.34 3.43 3.51 3.60 3.69 3.78
Noise (nV/√Hz)
OFFSET VOLTAGE DRIFT PRODUCTION DISTRIBUTION
12
Typical distribution
of packaged units.
8
4
0
0
0.5
1.0
1.5
Offset Voltage Drift (µV)/°C
OFFSET VOLTAGE PRODUCTION DISTRIBUTION
17.5
Typical distribution
15.0 ^{of packaged units.}
12.5
10.0
5.5
5.0
2.5
0
Offset Voltage (µV)
10
8
6
4
2
0
–2
–4
–6
–8
–10
0
WARM-UP OFFSET VOLTAGE DRIFT
50
100
150
200
250
300
Time from Power Supply Turn-On (s)
OPA227, 2227, 4227
6
OPA228, 2228, 4228
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SBOS110A