Title :
A Switched Opamp 1.5V - 100μW ΔΣ Modulator with 12 bits Dynamic Range
Author :
Peluso, V. ; Steyaert, M. ; Sansen, W.
Author_Institution :
K.U.Leuven, ESAT-MICAS, Kardinaal Mercierlaan 94, 3001 Leuven, Belgium
Abstract :
A true low voltage - low power ΔΣ modulator is presented. The power supply is only 1.5V. The power dissipation is only 100 μW. The modulator is a second order single loop topology implemented with the switched opamp technique. Consequently no voltage multiplication of any kind is needed. The chip is implemented in a 0.7μm CMOS process with normal threshold voltages. The measured dynamic range in the speech bandwidth of 300-3400Hz is 12 bit. The THD is lower than -72dB.
Keywords :
Bandwidth; CMOS process; Dynamic range; Low voltage; Power dissipation; Power supplies; Semiconductor device measurement; Speech; Threshold voltage; Topology;
Conference_Titel :
Solid-State Circuits Conference, 1996. ESSCIRC '96. Proceedings of the 22nd European
Conference_Location :
Neuchatel, Switzerland
Print_ISBN :
2-86332-197-8
