High performance CMOS current-mode precision full-wave rectifier (PFWR)

Author

Khucharoensin, Surachet ; Kasemsuwan, Varakorn

Author_Institution

King Mongkut´´s Inst. of Technol., Bangkok, Thailand

Volume

1

fYear

2003

fDate

25-28 May 2003

Abstract

This paper presents a high performance CMOS current-mode precision full-wave rectifier. The circuit operates under 3V supply voltage and is designed based on an improved Wilson current mirror. All MOS transistors are biased at low current resulting in small power dissipation. Negative feedback has been employed to reduce the input impedance of the circuit (236Ω). HSPICE is used to perform the simulation and the result shows the frequency of operation as high as 100 MHz with a standard 0.5 μm CMOS technology. The mismatch obtained from the input and rectifier´s output is 0.21% for an input current of ±150μA. The DC transfer characteristic shows good linearity, very sharp corner at zero crossing point and good symmetry during positive and negative input cycle while power dissipation is 5.8μW.

Keywords

CMOS integrated circuits; SPICE; circuit feedback; current mirrors; current-mode circuits; rectifying circuits; 0.5 micron; 100 MHz; 150 muA; 3 V; 5.8 muW; CMOS current-mode precision full-wave rectifier; DC transfer characteristics; HSPICE simulation; MOS transistor; Wilson current mirror; input impedance; negative feedback; power dissipation; CMOS technology; Circuit simulation; Feedback circuits; Impedance; MOSFETs; Mirrors; Negative feedback; Power dissipation; Rectifiers; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 2003. ISCAS '03. Proceedings of the 2003 International Symposium on

Print_ISBN

0-7803-7761-3

Type

conf

DOI

10.1109/ISCAS.2003.1205495

Filename

1205495