Title :
An electrochemical sensor ASIC for agriculture applications
Author :
Tan Kong Yew ; Yusoff, Yuzman ; Lam Kien Sieng ; Lah, Hanif Che ; Majid, Hirsh ; Shelida, Noor
Author_Institution :
Integrated Circuit Design Dept., MIMOS Berhad, Kuala Lumpur, Malaysia
Abstract :
This paper presents a fully integrated application specific integrated circuit (ASIC) for the readout of multiple electrochemical sensor signals. It consists of an analog router that routes readout circuits to various sensors, a 10bit successive approximation register analog to digital converter (SAR ADC), two digital to analog converters (DAC), a multiplexer and I2C/SPI serial interfaces for connection to micro-controller (MCU). The ASIC is fabricated in a 0.35-μm CMOS technology, occupies an area of 1.5 × 3.0 mm2, and consumes a current of 3.2 mA from a 3.3 V supply. All calibration and configurations are set using the I2C/SPI serial interface connections.
Keywords :
CMOS digital integrated circuits; agriculture; analogue-digital conversion; application specific integrated circuits; digital-analogue conversion; electrochemical sensors; multiplexing equipment; peripheral interfaces; readout electronics; CMOS technology; DAC; I2C/SPI serial interfaces; MCU; SAR ADC; agriculture applications; analog-to-digital converter; application specific integrated circuit; current 3.2 mA; digital-to-analog converters; electrochemical sensor ASIC; microcontroller; readout circuits; size 0.35 mum; successive approximation register; word length 10 bit; Agriculture; Application specific integrated circuits; Calibration; Digital-analog conversion; Layout; Multiplexing; Resistors;
Conference_Titel :
Information and Communication Technology, Electronics and Microelectronics (MIPRO), 2014 37th International Convention on
Conference_Location :
Opatija
Print_ISBN :
978-953-233-081-6
DOI :
10.1109/MIPRO.2014.6859538