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Re: TL431 noise performance

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djk

(M)

In Reply to: TL431 noise performance posted by Ola on October 31, 2001 at 00:57:14:

A zener is used in the reverse breakdown mode.At low currents this is very noisey.The TL431 uses the voltage from a forward biased diode as a reference to drive a shunt transistor.Much quieter.LM385 and LM4050 are some similar parts.

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Thanks a lot! - Ola 07:48:46 10/31/01 (0)
Thanks a lot!

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