±7_V_REFERENCE

Published:2009/7/15 22:13:00 Author:Jessie | From:SeekIC

Developed for analog applications requiring dual-polarity references. Both voltages are generated from single μA723 IC voltage regulator chip. Chief requirement is keeping inputs and outputs within dynamic range of amplifier, which is +2 to +9 V; this is done by shifting output voltage level upward with zener D1 and shifting input error voltage with divider R1-R2. Changing ratio of R3 to R4 changes negative reference value.-D. Weigand, Dual 7V Reference Developed from a Single μA723, EDN Magazine, Nov. 1, 1972, p 47.



Reprinted Url Of This Article:
http://www.seekic.com/circuit_diagram/Power_Supply_Circuit/±7_V_REFERENCE.html

Print this Page | Comments | Reading(3)