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A_D_converter_for_3_digit_LCD_display

2016-12-16 01:30  
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A_D_converter_for_3_digit_LCD_display
This circuit shows a CA3162E and three CD4056B LCD decoder/drivers connected in a typical LCD application. With pin 6 of the CA3162E floating (as shown), the sampling rate is 4 Hz. The negative sign (-) is decoded as a negative sign (-), and the positive overload indicator (E) as an H . To adjust, short terminals 10 and 11 of the CA3162E, and adjust the zero control for a reading of 000 on the display. Then, apply 900 mV at terminals 10 and 11, and adjust the gain control for a reading of 900 on the display. Harris Semiconductors, Data Acquisition, 1991, p. 2-5.