Current-controllable monostable multivibrator with retriggerable function

This paper presents a novel current-controllable monostable multivibrator, which is composed of three operational transconductance amplifiers (OTAs), two grounded resistors, and one grounded capacitor. The pulse width and height of the output signal can be adjusted through the bias currents of OTAs and external resistors. In addition, this new monostable circuit features a retriggerable function that can efficiently overcome the problem of the recovery time. The proposed retriggerable monostable multivibrator including the parasitics and slew rate (SR) effect is analyzed in detail. A prototype circuit is built to conduct tests. Experimental results are shown to confirm the theoretical analysis. The presented current-controllable monostable circuits displays good linearities of current-to-pulse width and current-to-pulse height. Also the temperature stabilities are acceptable.