Title :
An Analog CMOS Multiplier Based on the Tomota-Sugiyama-Yamaguchi Principle
Author :
De Cock, B.A. ; Maurissens, D. ; Cornelis, J.
Author_Institution :
Mietec-Alcatel n.v., Brussels, Belgium
Abstract :
A CMOS pulse width modulator/pulse amplitude modulator (PWM/PAM) has been realised. The design is based on the Tomota-Sugiyama-Yamaguchi (TSY)-principle. The PWM/PAM has been used to build a four quadrant analog multiplier (4-QAM) with a DC transfer function which depends only on resistor matching and on the value of a reference voltage. The PWM/PAM circuit was fabricated in a 3-μm CMOS process. Measurements show a small total error (max.2%) without trimming. A DC-error model, a stability criterion and a bandwidth restriction are derived.
Keywords :
CMOS analogue integrated circuits; integrated circuit manufacture; multiplying circuits; pulse amplitude modulation; pulse width modulation; transfer functions; 4-QAM; DC transfer function; DC-error model; PAM; PWM; Tomota-Sugiyama-Yamaguchi principle; analog CMOS multiplier; four quadrant analog multiplier; pulse amplitude modulator; pulse width modulator; resistor matching; size 3 mum; Amplitude modulation; CMOS process; Circuits; Pulse width modulation; Quadrature phase shift keying; Resistors; Semiconductor device modeling; Space vector pulse width modulation; Transfer functions; Voltage;
Conference_Titel :
Solid-State Circuits Conference, 1992. ESSCIRC '92. Eighteenth European
Conference_Location :
Copenhagen
Print_ISBN :
87-984232-0-7
DOI :
10.1109/ESSCIRC.1992.5468147
