Preprint Article Version 1 This version not peer reviewed

None Operational Amplifier (OPA) Based: Design of Analogous Bandgap Reference Voltage

Version 1 : Received: 29 December 2016 / Approved: 29 December 2016 / Online: 29 December 2016 (15:47:33 CET)

How to cite: Chan, H.; Hung, Y. None Operational Amplifier (OPA) Based: Design of Analogous Bandgap Reference Voltage. Preprints 2016, 2016120143 (doi: 10.20944/preprints201612.0143.v1). Chan, H.; Hung, Y. None Operational Amplifier (OPA) Based: Design of Analogous Bandgap Reference Voltage. Preprints 2016, 2016120143 (doi: 10.20944/preprints201612.0143.v1).

Abstract

By using 0.35-um CMOS process, this work achieves a design of analogous band-gap reference voltage circuit with low temperature coefficient. The proposed circuit operates at 3V and generates a reference current of 44 uA. The HSPICE simulation results show the temperature coefficient of this circuit is 23 ppm/℃ at range of -10 ℃ to 100 ℃, and the line regulation (the ratio of output current variation to supply voltage variation) is estimated as 1.95 uA/V from supply voltage variation of 3 V to 5 V. The experimental chip is fabricated and measured. The circuit provides adjustable capability for output voltage among temperature variation of -10 - 100 ℃. The chip area is 534 × 695 um^2. In this new design, the operational amplifier is not necessary. The chip design effort can be great reduced.

Subject Areas

Band-gap voltage reference; voltage reference; circuit design

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