RC analog-to-digital converters simplify design of temperature, humidity, and CO instrumentation

摘要

Temperature, humidity, and other physical measurements in digital instrumentation typically use successive approximation (SA) analog-to-digital conversion (ADC) techniques to acquire data. While providing accurate, high-resolution results, SA ADCs increase component count and power consumption. This article will describe the use of resistor-capacitor (RC) ADCs to reduce component count and "further reduce power consumption in a range of battery-oper- . ikted applications. Highly integrated RC-ADCs in low-power microcontrollers provide the key to implementation in these types of applications.