Title :
A low-voltage √x floating-gate MOS integrator
Author :
Rodriguez, Esther O. ; Yufera, Alberto ; Rueda, Adoracion
Author_Institution :
Inst. de Microelectron., Centro Nacional de Microelectron., Seville, Spain
Abstract :
In this paper, the design and simulation results of an IV integrator using floating gate MOS (FGMOS) transistor techniques is presented. Combining FGMOS working in strong and in weak inversion a current-mode companding integrator is proposed implemented in a standard CMOS process is able to work with very low supply voltage. It has application in audio signal processing. Simulation results show a very low power consumption (1.3 μW), low frequencies below 5 Hz feasible, and a dynamic range of 55 dB for a maximum THD=1.2%. The gain of the integrator is adjustable in more than 2 decades
Keywords :
analogue processing circuits; audio signal processing; compandors; current-mode circuits; integrating circuits; low-power electronics; 1.3 muW; FGMOS transistor techniques; IV integrator; audio signal processing; current-mode companding integrator; dynamic range; floating-gate MOS integrator; low-voltage circuits; power consumption; weak inversion; Capacitance; Capacitors; Circuits; Differential equations; Integral equations; Nonlinear equations; Power supplies; Threshold voltage; Transconductance; Virtual colonoscopy;
Conference_Titel :
Circuits and Systems, 2000. Proceedings. ISCAS 2000 Geneva. The 2000 IEEE International Symposium on
Conference_Location :
Geneva
Print_ISBN :
0-7803-5482-6
DOI :
10.1109/ISCAS.2000.857058
