1_V_HIGH_PRECISION

Published:2009/7/15 21:36:00 Author:Jessie | From:SeekIC

Drift is less than 1 mV over 20℃ temperature range, and voltage dividet reduces this to ±0.1 mV for 1.00-V reference required in 41/2 -digit meter. All three pots should be wirewound. Current of reference zener is regulated by opamp gain and zener voltage.-S. Kelley, Applications of MC1405/MC14435 in Digital Meters, Motorola, Phoenix, AZ, 1975, AN-748, p 19.



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