Title :
Tunable high resistance voltage-controlled pseudo-resistor with wide input voltage swing capability
Author :
Shiue, Muh-Tian ; Yao, K.-W. ; Gong, Cihun-Siyong Alex
Author_Institution :
Dept. of Electr. Eng., Nat. Central Univ., Jhongli, Taiwan
Abstract :
A tunable pseudo-resistor featuring a wide input voltage range and ultra-high resistance is proposed. It is composed of serial-connected PMOS devices operating in the subthreshold region. An auto-tuning circuit involved makes the pseudo-resistor robust against process variations and common-mode voltage shifting. Operation and theoretical analysis are detailed. Simulation results in a 0.18 μm technology demonstrate the advantages of the proposed pseudo-resistor.
Keywords :
CMOS integrated circuits; MOSFET; resistors; CMOS technology; autotuning circuit; common-mode voltage shifting; process variations; serial-connected PMOS devices; size 0.18 mum; tunable high resistance voltage-controlled pseudoresistor; wide input voltage swing capability;
Journal_Title :
Electronics Letters
DOI :
10.1049/el.2010.3286
