SAR A/D Converter to FPGA Interfacing for Analog Sensor Data Acquisition

Abstract: In this paper a methodology to interface FPGA with SAR A/D converters has been stated. A simulation result for two different ADCs using the proposed interfacing methodology has been presented. This paper also comes up with a UART transmitter module designed for hardware implementation in which an 8-bit resolution A/D converter has been interfaced with FPGA using the methodology given in this paper. In hardware implementation A/D converter acquires analog data from LM35 temperature sensor and the conversion result is sent via the proposed UART module and visualized on PC using Tera-term software.

Keywords: Sensors, ADC, Baud Rate, FPGA, Interfacing.