Adjustable Precision Shunt Regulator

AP431/AP431A

Anachip Corp.

www.anachip.com.tw

Rev.1.0 May.7, 2004

5/17

the full temperature range.

1

2

6

REF

DEV

REF

T

T

10

)

C)

(25

V

V

(

V

−

⋅

°

=

α

……………………..……………….. (

)

C

ppm

°

Where:

T2 – T1 = full temperature change.

α

KA

KA

KA

I

V

Z

∆

∆

=

When the device is programmed with two external resistors R1 and R2 (see Figure 2.), the dynamic output

impedance of the overall circuit, is defined as:

)

R2

R1

(1

Z

i

v

Z

KA

'

KA

+

∆

∆

=

≈

Test Circuits

Input

V

KA

I

KA

Fig1. Test Circuit for V

IN

R1

R2

I

KA

V

KA

Fig2. Test circuit for V

KA

V

＞

REF

IN

V

KA

Fig3. Test Circuit for off-state Current