论文信息 - A simple voltage reference using transistor with ZTC point and PTAT current source

A simple voltage reference using transistor with ZTC point and PTAT current source

When a diode-connected MOS transistor is biased with a PTAT current source, the gate-source voltage of such transistor can be temperature independent. Based on this idea a circuit is designed and implemented in a standard 0.18/spl mu/m CMOS technology. The simulations show that the output voltage of this reference has the temperature coefficient of 4 ppm//spl deg/C in the range of -50/spl deg/C to 150/spl deg/C. If this transistor is biased below the zero temperature coefficient (ZTC) point this technique opens the way to design a sub-1 V voltage reference.

Laleh Najafizadeh | Igor M. Filanovsky

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