Title :
A low-voltage single input class AB transconductor with rail-to-rail input range
Author :
El-Adawy, Ahmed A. ; Soliman, Ahmed M.
Author_Institution :
Dept. of Electron. & Commun. Eng., Cairo Univ., Giza, Egypt
fDate :
2/1/2000 12:00:00 AM
Abstract :
A new CMOS programmable rail-to rail transconductor is presented. A linear V-I characteristic is obtained by using the principle of nonlinearity cancellation of matched MOS transistors operating in the ohmic region. Rail-to-rail operation is achieved by using two complementary blocks. The circuit is suitable for low voltage as it can operate from supply voltages down to ±1.5 V. PSpice simulations show that the transconductance gain can be electronically tuned from 13 to 90 μ A/V with bandwidth of about 40 MHz
Keywords :
CMOS analogue integrated circuits; SPICE; analogue processing circuits; circuit simulation; circuit tuning; low-power electronics; -1.5 to 1.5 V; 40 MHz; CMOS; PSpice simulations; complementary blocks; electronically tuned transconductance gain; linear V-I characteristic; low-voltage single input class AB transconductor; matched MOS transistors; nonlinearity cancellation; ohmic region; rail-to-rail input range; Bifurcation; Circuit analysis; Circuit stability; Circuit theory; Microwave theory and techniques; Nonlinear circuits; Rail to rail inputs; Stability analysis; Steady-state; Transconductors;
Journal_Title :
Circuits and Systems I: Fundamental Theory and Applications, IEEE Transactions on
