REF200: REF200

Sumeet Patil

Part Number: REF200
Other Parts Discussed in Thread: LM234, LM334, LM134

Tool/software:

Hello TI,

I am planning to build a positive temperature dependence current source for matched JFET pairs, can TI suggest a proper design for the same?

1 month ago

0 Jackson Wightman 1 month ago

TI__Expert 5690 points

Hello Sumeet,

You could consider a device such as LM134, LM234, or LM334. Information on how these devices are used in temperature dependent applications can be seen in their datasheet:

https://www.ti.com/lit/ds/symlink/lm134.pdf

Figure 17 and the "Application Hints" section should be particularly useful.

Additionally, here is an application note which shows many different ways to configure very accurate current sources and sinks using TI's voltage references:

https://www.ti.com/lit/an/snoaa46/snoaa46.pdf

Thanks,

Jackson

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REF200: REF200