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This paper presents a gas sensor readout IC for amperometric and conductometric electrochemical sensors. The Analog Front-End (AFE) readout circuit enables tracking long term exposure to hazardous gas fumes in diesel and gasoline equipment, which may be correlated to diseases. The AFE reads out the output of eight conductometric sensor arrays and eight amperometric sensor arrays. The IC consists of...
A fully integrated 8-channel gas readout analog front-end IC is presented. The IC enables detection and identification of harmful environmental pollutants in exhaust gas fumes for extended periods, which in turn helps with correlating different pollutants with several illnesses. The system can read out an array of eight conductometric and amperometric electrochemical sensors while multiplexing analog-front-end...
Low 1/f noise, low-dropout (LDO) regulators are becoming critical for the supply regulation of deep-submicron analog baseband and RF system-on-chip designs. A low-noise, high accuracy LDO regulator (LN-LDO) utilizing a chopper stabilized error amplifier is presented. In order to achieve fast response during load transients, a current-mode feedback amplifier (CFA) is designed as a second stage driving...
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