ADR293

Rev. D | Page 9 of 12

TERMINOLOGY

Line Regulation

The change in output voltage due to a specified change in input

voltage. It includes the effects of self-heating. Line regulation is

expressed in percent per volt, parts per million per volt, or

microvolts per volt change in input voltage.

Load Regulation

The change in output voltage due to a specified change in load

current. It includes the effects of self-heating. Load regulation is

expressed in microvolts per milliampere, parts per million per

milliampere, or ohms of dc output resistance.

Long-Term Stability

Typical shift of output voltage of 25°C on a sample of parts

subjected to high temperature operating life test of 1000 hours

at 125°C.

( )

()

1

OUT

0

OUT

OUT

t

V

t

V

V

−

=

Δ

[]

()

()

()

6

10

ppm

×

−

=

Δ

0

OUT

1

OUT

0

OUT

OUT

t

V

t

V

t

V

V

where:

NC = No Connect

There are in fact connections at NC pins, which are reserved for

manufacturing purposes. Users should not connect anything at

NC pins.

Temperature Coefficient

The change of output voltage over the operating temperature

change and normalized by the output voltage at 25°C, expressed

in ppm/°C.

[]

()

( )

()

()

6

10

C

ppm/

×

−

×

°

−

=

°

1

2

OUT

1

OUT

2

OUT

OUT

T

T

C

25

V

T

V

Τ

V

V

TC

where:

Thermal Hysteresis

Thermal hysteresis is defined as the change of output voltage

after the device is cycled through temperatures from +25°C to

–40°C to +85°C and back to +25°C. This is a typical value from

a sample of parts put through such a cycle.

(

)

TC

OUT

OUT

HYS

OUT

V

C

25

V

V

−

−

−

°

=

[]

()

()

6

10

ppm

×

°

−

°

=

−

−

C

25

V

V

C

25

V

V

OUT

TC

OUT

OUT

HYS

OUT

where:

to +85°C and back to +25°C.