[volt-nuts] Making a Reference IC
forjack842 at aol.com
Sat Sep 12 17:14:17 EDT 2015
Just thinking why would you reinvent a transistor/zener reference when the industry's voltage reference chips are in the $2.00 or less single quanities with performance far exceeding anything previously available in discrete components??
From: Dave M <dgminala at mediacombb.net>
To: FEBO Volt-Nuts <volt-nuts at febo.com>
Sent: Sat, Sep 12, 2015 1:58 pm
Subject: [volt-nuts] Making a Reference IC
I was looking at the schematics for the Fluke 731 and 732 voltage
references. these, and several other brands and models of voltage
references, use the same or similar reference ICs as their basis. The
reference ICs are a Zener/NPN transistor pair on a single substrate.
Please view in a fixed-width font such
Just thinking... would it be possible to make a reference with similar
characteristics with discrete components (a low tempco Zener and a
transistor)? They would likely have to be closely coupled thermally and
maintained at a constant temperature within an oven or by a peltier device.
What criteria would apply to the selection of the parts?
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