OP297GS datasheet(5/16 Pages) AD

5 / 16 page

8/21/97 4:00 PM

OP297

–5–

REV. D

INPUT OFFSET VOLTAGE (

µV)

400

300

200

100

–100 –80 –60 –40 –20 0

40 60 80 100

1200 UNITS

TA = +25°C

VS = ±15V

VCM = 0V

Figure 4. Typical Distribution of Input

Offset Voltage

TEMPERATURE (

°C)

–40

–60

–75 –50 –25

100 125

VS = ±15V

VCM = 0V

IB–

IB+

IOS

Figure 7. Input Bias, Offset Current

vs. Temperature

SOURCE RESISTANCE (

Ω)

100

10k

100k

10M

10000

1000

100

BALANCED OR UNBALANCED

VS = ±15V

VCM = 0V

–55

°C

≤ TA ≤ 125°C

TA = +25°C

Figure 10. Effective Offset Voltage

vs. Source Resistance

Typical Performance Characteristics–

INPUT BIAS CURRENT (pA)

–100 –80 –60 –40 –20

20 40

60 80 100

250

200

150

100

1200

UNITS

TA = +25°C

VS = ±15V

VCM = 0V

Figure 5. Typical Distribution of Input

Bias Current

COMMON-MODE VOLTAGE (VOLTS)

–20

–40

–60

–15

–10

–5

TA = +25°C

VS = ±15V

IB–

IB+

IOS

Figure 8. Input Bias, Offset Current

vs. Common-Mode Voltage

SOURCE RESISTANCE (

Ω)

100

100M

10k

100k

10M

100

0.1

BALANCED OR UNBALANCED

VS = ±15V

VCM = 0V

Figure 11. Effective TCVOS vs. Source

Resistance

INPUT OFFSET CURRENT (pA)

400

300

200

100

–100 –80 –60 –40 –20 0

20 40

60 80 100

1200 UNITS

TA = +25°C

VS = ±15V

VCM = 0V

Figure 6. Typical Distribution of In-

put Offset Current

TIME AFTER POWER APPLIED (MINUTES)

±3

±2

±1

012345

TA = +25°C

VS = ±15V

VCM = 0V

Figure 9. Input Offset Voltage Warm-

Up Drift

TIME FROM OUTPUT SHORT (MINUTES)

–5

–10

–15

–20

–25

–30

–35

TA = –55°C

TA = +25°C

TA = +125°C

VS = ±15V

OUTPUT SHORTED

TO GROUND

TA = +125°C

TA = +25°C

TA = –55°C

Figure 12. Short Circuit Current vs.

Time, Temperature

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