REF02

Rev. I | Page 10 of 16

OUTPUT ADJUSTMENT

The REF02 trim terminal can be used to adjust the output

voltage over a 5 V ± 300 mV range. This feature lets the system

designer trim system errors by setting the reference to a voltage

other than 5 V. The output also can be set to exactly 5.00 V or to

5.12 V for binary applications.

Adjustment of the output does not significantly affect the

temperature performance of the device. The temperature

coefficient change is approximately 0.7 ppm/°C for 100 mV of

output adjustment.

U1

REF02

TEMP TRIM

GND

pot

10k

Ω

R2

1k

Ω

R1

470k

Ω

Figure 14. Output Adjustment Circuit

GND

–18V

+18V

4

2

REF02

Figure 15. Burn-In Circuit

GND

REF02

TRIM

TEMP

0.1

µF

5k

Ω

OP02

10k

Ω

10k

Ω

+15V

–15V

+15V

+5V

–5V

4

5

3

6

2

Figure 16. ±5 V Reference

REF02

R1

5.6k

Ω

R2

5.6k

Ω

2

+5V

4

6

2

OP02

–

+

3

4

6

7

–9V

+2.5V

–2.5V

R1

R1 + R2

R2

R1 + R2

Figure 17. ±2.5 V Reference