Shahin J. Ashtiani

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A new circuit is proposed to enhance the slew rate (SR) of the folded-cascode amplifier (FCA). The proposed circuit is automatically activated during the slewing phase. Simulation results show a four-times improvement in the SR and close to 40% reduction in the settling time, compared to a conventional FCA. Introduction: In nanometre CMOS technologies, the(More)
Area and current consumption are crucial for design of low-noise low-bandwidth preamplifiers for biosignal amplification. In this paper we present an analytical method for optimizing power-area for a constant root mean square (RMS) input-referred noise level of MOSFETs. Power-area optimization is performed for single PMOS transistor over 1mHz to 10kHz for(More)
A scheme of driving AMOLED displays with amorphous silicon (a-Si) thin film transistors (TFTs) is presented. By exploiting current feedback, a transresistance amplifier as column driver, and an accelerating current pulse, the driving scheme provides fast programming and low sensitivity of OLED current to shift in V<sub>T</sub> in a-Si TFTs. Prototypes of(More)
A new voltage-programmed pixel using amorphous silicon (a-Si) thin film transistors (TFTs) for active matrix organic light-emitting diodes (AMOLEDs) and its external driver is presented. The proposed pixel circuit is a 3- TFT structure with only 2 controlling signals. This pixel structure along with its driver compensates for the shift in TFTs threshold(More)
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