P r o d u c t I n n o v a t i o n F r o m

VRE4100

VRE4100DS



.tEMpERAtuREpERFoRMAncE

This series is designed for applications where the initial error at room temperature and drift over temperature are

important to the user. For many instrument manufacturers, a voltage reference with a temperature coefficient of

1ppm/ºC makes it possible to eliminate a system temperature calibration, a slow and costly process.

Of the three TC specification methods (slope, butterfly, and box), the box method is most commonly used. A box

is formed by the min/max limits for the nominal output voltage over the operating temperature range. The equation

follows:

V

V

TC =

This method corresponds more accurately to the method of test and provides a closer estimate of actual error than

the other methods. The box method guarantees limits for the temperature error but does not specify the exact shape

or slope of the device under test.

4.BASicciRcuitconnEction

The proper connection for the VRE4112/VRE4125/VRE4141 series voltage references is shown below.

To achieve the specified performance, pay careful attention to the layout. Commons should be connected to a single

point to minimize interconnect resistances. This will reduce voltage errors, noise pickup, and noise coupled from

the power supply.

pinDEScRiption

4

GND

These must be connected to ground

2

V

IN

Positive power supply input

3

Enable

Pulled to V

1,5,7,8

NC

This pin must be left open

6

V

OUT

Reference output

EXtERnAlconnEctionS

2

6

3

VRE4112

VRE4125

VRE4141

NC

Enable

4

1,5,7,8