SINGLE_SLOPE_V_F_CONVERSlON

Published:2009/6/30 21:14:00 Author:May | From:SeekIC

UJT forms reference that determines reset point of LM301A integrator for converting analog input voltage to proportional frequency. Output of in-tegrator ramps negative until UJT switches and drives output positive at high slew rate. Positive edge of integ rator output is differentiated by RC network and level-shifted by NPN bipolar transistor to provide logic-compatible pulse.—J. Williams, Low-Cost, Linear A/D Conversion Uses Single-Slope Techniques, EDN Magazine, Aug. 5, 1978, p 101-104.



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