Readout Electronics Scheme in CMOS Technology for Integration with Analog Outputs from Integrated Smart Sensors

Abstract

A digital readout electronics scheme in CMOS technology is described for integration with micro-electro-mechanical (MEM) sensors on the same chip. The readout circuit is general in nature and can be employed with a variety of analog sensors. The presented scheme in CMOS technology is fully integrable with the multiple sensor outputs either in a chain or an array format and is capable of detecting low analog output signals from a few mV to mV range. The CMOS circuit design is compatible with ±1.5V operation for low power consumption.