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TL431BCP

Programmable Precision Reference

First Components International 

TL431 Programmable Precision Reference

3

The dynamic impedance ZKA is defined as:

|

ZKA

|

=

∆VKA

∆IK

When the device is programmed with two external resistors, R1 and r2, (refer to Figure 2)

the total dynamic impedance of the circuit is defined as:

| ZKA’| ≈ | ZKA | (1+ R1 )

R2

5

2001-05-A

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