A Current-mode Square/Triangular Wave Generator with Independently Linear Controllability of Frequency and Amplitudes

Abstract: A current-mode square/triangular wave is presented. Due to operation in current-mode, the proposed circuit provides a wide frequency response, a low supply voltage, low power consumption and electronic controllability. Thus, it is very suitable for use in portable and battery-powered equipments. The feature of the proposed circuit is that it can provide simultaneously both a square wave and a triangular wave whose frequency and amplitudes can be independently controlled by input bias currents. The performances of the proposed circuit are explored through HSPICE simulation program using BSIM3v3 model from MOSIS. 1