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Design and Realization of a High Precision Low Temperature Coefficient Bandgap Voltage Reference |
Yuan Ting; Gong Wen-chao; He Le-nian |
Institute of VLSI, Zhejiang University, Hangzhou 310027, China |
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Abstract This paper demonstrates a design of bandgap voltage reference with high precision and low temperature coefficient. A dual-differential input operational amplifier is used for high-temperature coefficient compensation. The chip is simulated by using Cadence’s Spectre software and implemented by using TSMC 0.35 μm mixed-signal process. Simulation results indicate that the bandgap voltage reference has a temperature coefficient of 2.2 ppm/℃ in -40~125℃.
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Received: 27 February 2008
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