一种低温漂高PSRR带隙基准电路
By using a segmented curvature compensation current and a low-impedance loop design, the low-temperature drift and high PSRR bandgap reference circuit solves the temperature drift and power supply fluctuation problems of traditional bandgap reference circuits, achieves high-precision reference voltage output, and improves circuit stability and power supply rejection ratio.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- NANJING UNIV OF POSTS & TELECOMM
- Filing Date
- 2026-03-30
- Publication Date
- 2026-07-17
AI Technical Summary
Traditional bandgap reference circuits suffer from temperature drift and power supply fluctuations, resulting in low accuracy of the reference voltage and an inability to maintain stability under different environments.
By employing a segmented curvature compensation current temperature regulation and low impedance loop design, a bandgap reference circuit with low temperature drift and high PSRR is formed through the superposition of positive temperature current, negative temperature current and high-order temperature compensation current, thereby enhancing the power supply rejection ratio.
Within a power supply voltage of 3.3V and a temperature range of -40℃ to 125℃, the output voltage temperature drift coefficient is reduced by 20 times, improving the stability and power supply suppression capability of the circuit system, and resulting in low power consumption.
Smart Images
Figure CN121979355B_ABST