Design the ADC interface to a digital thermostat using an LM34 temperature sensor and the ADC0804. Your
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Design the ADC interface to a digital thermostat using an LM34 temperature sensor and the ADC0804. Your system must measure accurately (±0.2°F) from 50 to 101°F. The LM34 puts out 0.01 V per degree F(0°F = 0°V).
(a) What should the digital value for 50°F be for the best resolution?
(b) What voltage must be applied to VIN(–)?
(c) What is the full-scale range of voltage that will come in?
(d) What voltage must be applied to VREF/2?
(e) What binary value will represent 72°F?
(f) What is the resolution in °F? In volts?
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Related Book For
Digital Systems Principles And Application
ISBN: 9780134220130
12th Edition
Authors: Ronald Tocci, Neal Widmer, Gregory Moss
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