A Novel High PSR Voltage Reference with Secondary Temperature Compensation

A Novel High PSR Voltage Reference with Secondary Temperature Compensation

A novel voltage reference based on Kujik bandgap is proposed in this paper. An extra amplifier and bipolar are used to produce a current of positive temperature coefficient, which is for compensating the Kujik bandgap reference in high temperature. The reference finally has a temperature coefficient...

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Bibliographische Detailangaben
Hauptverfasser: Ning Zhi-Hua, He Le-Nian, Wang Yi, Shao Ya-Li
Format: Tagungsbericht
Sprache:eng
Schlagworte:
CMOS integrated circuits
Equations
Kujik bandgap
Mathematical model
Photonic band gap
PSR
secondary temperature compensation
Temperature
Temperature measurement
Temperature sensors
voltage reference
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Zusammenfassung:A novel voltage reference based on Kujik bandgap is proposed in this paper. An extra amplifier and bipolar are used to produce a current of positive temperature coefficient, which is for compensating the Kujik bandgap reference in high temperature. The reference finally has a temperature coefficient of only 10 ppm/°C. A negative feedback loop is introduced to provide a pre-regulated power supply for the voltage reference, which has increased the power supply rejection (PSR) of the voltage reference to -120 dB@dc. The circuit has been designed with TSMC 0.35 μm CMOS process, and the measurements agree our design.
DOI:10.1109/iCECE.2010.781