OPA227 datasheet(12/50 Pages) TI2

12 / 50 page

6.9 Typical Characteristics (continued)

At TA = 25°C, RL = 10 kΩ, and VS = ±15 V, unless otherwise noted.

1s/div

Figure 6-7. Input Noise Voltage vs Time

100

10k

100k

140

120

100

Frequency (Hz)

Dual and quad devices. G = 1, all channels.

Quad measured Channel A to D, or B to C;

other combinations yield similiar or improved

rejection.

Figure 6-8. Channel Separation vs Frequency

Noise (nV/√Hz)

3.16

3.25 3.34 3.43 3.51 3.60 3.69 3.78

Figure 6-9. Voltage Noise Distribution (10 Hz)

OFFSET VOLTAGE PRODUCTION DISTRIBUTION

Offset Voltage (μV)

17.5

15.0

12.5

10.0

5.5

5.0

2.5

Typical distribution

of packaged units.

Figure 6-10. Offset Voltage Production Distribution

Offset Voltage Drift (μV)/°C

Typical distribution

of packaged units.

0.5

1.0

1.5

Figure 6-11. Offset Voltage Drift Production Distribution

–2

–4

–6

–8

–10

100

150

300

Time from Power Supply Turn-On (s)

200

250

Figure 6-12. Warm-Up Offset Voltage Drift

OPA227, OPA2227, OPA4227

OPA228, OPA2228, OPA4228

SBOS110C – MAY 1998 – REVISED MARCH 2023

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