Title :
A 1.2 V companding current-mode integrator for standard digital CMOS processes
Author :
Python, Dominique ; Fried, Rafael ; Enz, Christian C.
Author_Institution :
Electron. Lab., Swiss Federal Inst. of Technol., Lausanne, Switzerland
Abstract :
A low-voltage current-mode integrator using voltage companding and operating in class AB is presented. The integrator is made only with transistors without any functional capacitors and is therefore suited to the integration in a digital CMOS process. It has been used in a 4th-order Tchebycheff low-pass filter which can be tuned from 20 Hz to 20 kHz and achieves total harmonic distortions smaller than 1% for input currents smaller than 10 times the bias current. The dynamic range is typically 55 dB and the power consumption is 1.16 μW for a cut-off frequency of 5 kHz
Keywords :
CMOS analogue integrated circuits; Chebyshev filters; active filters; analogue processing circuits; circuit tuning; harmonic distortion; integrating circuits; low-pass filters; 1.16 muW; 1.2 V; 20 Hz to 20 kHz; 4th-order low-pass filter; LV current-mode integrator; Tchebycheff low-pass filter; class AB operation; companding current-mode integrator; harmonic distortion; low-voltage operation; standard digital CMOS processes; tuning; voltage companding; CMOS process; CMOS technology; Capacitors; Circuits; Dynamic range; Energy consumption; Filters; Leakage current; MOSFETs; Voltage;
Conference_Titel :
Electronics, Circuits, and Systems, 1996. ICECS '96., Proceedings of the Third IEEE International Conference on
Conference_Location :
Rodos
Print_ISBN :
0-7803-3650-X
DOI :
10.1109/ICECS.1996.582785
