Title :
A low-voltage low-power CMOS V-I converter with rail-to-rail differential input for filtering applications
Author :
Lin, Chi-Hung ; Pimenta, Tales ; Ismail, Mohammed
Author_Institution :
Dept. of Electr. Eng., Ohio State Univ., Columbus, OH, USA
Abstract :
A low-voltage (⩽3 V) low-power CMOS voltage-to-current converter is introduced which has an almost rail-to-rail differential-input swing (±1.5 V) with a low signal-distortion (⩽1%) with a minimum supply voltage of 2 V. The proposed circuit uses class-AB linearization to achieve full-input-swing in the saturation region. In a 1.2 μm n-well CMOS process, the 3 dB frequency of the V-I converter is in the range of 113-114 MHz with different biases. The total power consumption is around 0.7 mW. A simple fully-differential 5th-order elliptic filter composed of the proposed V-I converters has THD below 1% with peak-to-peak Vout=1.2 V
Keywords :
CMOS analogue integrated circuits; active filters; convertors; elliptic filters; low-power electronics; 0.7 mW; 1.2 micron; 1.2 to 3 V; 113 to 114 MHz; 5th-order elliptic filter; class-AB linearization; filtering applications; fully-differential elliptic filter; low signal-distortion; low-power CMOS V-I converter; low-voltage CMOS V-I converter; n-well CMOS process; rail-to-rail differential input; voltage-to-current converter; CMOS process; Circuits; Energy consumption; Filtering; Filters; Frequency conversion; MOS devices; Rail to rail inputs; Threshold voltage; Very large scale integration;
Conference_Titel :
Electronics, Circuits and Systems, 1998 IEEE International Conference on
Conference_Location :
Lisboa
Print_ISBN :
0-7803-5008-1
DOI :
10.1109/ICECS.1998.813294
