Title :
High voltage gain CMOS OTA for micropower SC filters
Author :
Krummenacher, Francois
Author_Institution :
Swiss Federal Institute of Technology, Electronics Laboratory, Lausanne, Switzerland
Abstract :
The letter describes a single stage operational transconductance amplifier (OTA) with cascoded output transistors, designed for micropower switched-capacitor filters. The device features high voltage gain (>90 dB) under capacitive load, large output swing, very low power consumption (5 ¿W at 3 V supply voltage for 100 kHz bandwidth with 10 pF load) and reduced circuit area (<0.1 mm2).
Keywords :
active filters; field effect integrated circuits; operational amplifiers; switched capacitor networks; switched filters; CMOS; active filter; field effect transistor circuit; high voltage gain amplifier; micropower switched-capacitor filters; single stage operational transconductance amplifier;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19810113
