OPA227 Datasheet, PDF (11/46 Pages) Burr-Brown (TI) – High Precision, Low Noise OPERATIONAL AMPLIFIERS

www.ti.com
Typical Characteristics (continued)
At T_A = 25°C, R_L = 10 kΩ, and V_S = ±15 V, unless otherwise noted.
140
OPA227, OPA2227, OPA4227
OPA228, OPA2228, OPA4228
SBOS110B – MAY 1998 – REVISED JUNE 2015
120
100
1s/div
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)
Figure 7. Input Noise Voltage vs Time
24
16
8
0
0 3.16 3.25 3.34 3.43 3.51 3.60 3.69 3.78
Noise (nV/√Hz)
Figure 9. Voltage Noise Distribution (10 Hz)
12
Typical distribution
of packaged units.
8
4
0
0
0.5
1.0
1.5
Offset Voltage Drift (μV)/°C
Figure 8. Channel Separation vs Frequency
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)
Figure 10. Offset Voltage Production Distribution
10
8
6
4
2
0
–2
–4
–6
–8
–10
0
50
100
150
200
250
300
Time from Power Supply Turn-On (s)
Figure 11. Offset Voltage Drift Production Distribution
Figure 12. Warm-Up Offset Voltage Drift
Copyright © 1998–2015, Texas Instruments Incorporated
Submit Documentation Feedback
11
Product Folder Links: OPA227 OPA2227 OPA4227 OPA228 OPA2228 OPA4228