\tLow-Power, Low-Voltage Resistance-to-Digital Converter for Sensing Applications
Sergey Y. Yurish · DOAJ (DOAJ: Directory of Open Access Journals) · 2016
IC (ASIP) of Universal Sensors and Transducers Interface (USTI-MOB) with low power consumption, working in the resistive measurement mode (one of 26 possible measuring modes) is described in the article. The proposed IC has 20 W to 4.5 M W range of measurement, relative error< ±0.04 %, 0.85 mA supply current and 1.2 V supply voltage. The worst-case error of about< ±1.54 % is observed. IC has three popular serial interfaces: I2C, SPI and RS232/USB. Due to high metrological performance and technical characteristics the USTI- MOB is well suitable for such application as: sensor systems for IoT, wearable and mobile devices, and digital multimeters. The ICs can also work with any quasi-digital resistive converters, in which the resistance is converted to frequency, period, duty-cycle or pulse width.