OP27

Rev. F | Page 9 of 20

TOTAL SUPPLY VOLTAGE, V+ – V–, (V)

5

4

3

2

1

040

10

20

30

AT 10Hz

AT 1kHz

Figure 10. Voltage Noise Density vs. Supply Voltage

10.0

0.1

10

10k

FREQUENCY (Hz)

I/F CORNER = 140Hz

1.0

100

1k

Figure 11. Current Noise Density vs. Frequency

5.0

1.0

545

60

–70

–75

175

TEMPERATURE (

°C)

OP27C

TOTAL SUPPLY VOLTAGE (V)

4.0

3.0

2.0

15

25

35

Figure 12. Supply Current vs. Supply Voltage

50

40

30

20

10

0

–10

–20

–30

–40

–50

–60

OP27A

OP27A

OP27A

OP27C

–50

–25

0

25

50

75

100

125

150

TRIMMING WITH

10k

Ω POT DOES

NOT CHANGE

Figure 13. Offset Voltage Drift of Five Representative Units vs. Temperature

6

–6

07

TIME (Months)

4

2

0

–2

–4

–6

6

4

2

0

–2

–4

123

45

6

Figure 14. Long-Term Offset Voltage Drift of Six Representative Units

1

0

5

TIME AFTER POWER ON (Min)

10

5

12

34

OP27 F

OP27 A/E

OP27 C/G

Figure 15. Warm-Up Offset Voltage Drift