REF02 datasheet(6/9 Pages) MAXIM

6 / 9 page

+5V, +10V Precision

Voltage References

_______________________________________________________________________________________

Output Adjustment

The REF02 trim terminal can be used to adjust the out-

put voltage over a 5V ±300mV range. This feature

allows the system designer to trim system errors by set-

ting the reference to a voltage other than 5V (refer to

the Typical Operating Circuit).

Adjustment of the output does not significantly affect

the temperature performance of the device. Typically,

the temperature coefficient change is 0.7ppm/°C for

100mV of output adjustment.

Temperature Voltage Output

The REF02 provides a temperature-dependent output

voltage on the TEMP pin. This voltage is proportional to

the absolute temperature, and has a scale factor of

approximately 2.1mV/°C (Figure 1).

Output Voltage = 2.1(T + 273)mV

where T = Temperature in °C.

430

530

480

630

580

680

730

830

780

880

-60 -40 -20

0 20 40 60 80 100 120 140

TEMPERATURE (

°C)

Figure 1. REF02 Temperature/Voltage Output vs. Temperature

ELECTRICAL CHARACTERISTICS–REF02 (continued)

(VIN = +15V, TA = TMIN to TMAX, IL = 0mA, unless otherwise noted.)

Note 5: Guaranteed by design.

Note 6: Line and load regulation specifications include the effect of self heating. 100% production tested at TA = +25°C and guaranteed

by design for TA = TMIN to TMAX, as specified.

Note 7: Limit current in or out of pin 3 to 50nA and capacitance on pin 3 to 30pF.

Note 8:

∆VOT is defined as the absolute difference between the maximum output voltage and the minimum output voltage over the

specified temperature range expressed as a percentage of 5V. Guaranteed by design.

Note 9: TCVO is defined as

∆VOT divided by the temperature range. Guaranteed by design.

∆VOT =

⎡

⎣⎢

⎤

⎦⎥

V- V

100

MAX

MIN

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