A Sub-5 ppm/°C Bandgap Voltage Reference With Dual Source-Sink Current Compensation
Year: 2025
Type: article
Abstract: This work presents a bandgap voltage reference (BGR) with source-sink dual current compensation achieving a low temperature coefficient (TC) over the automotive temperature range from −40 to 125 °C. The two compensation currents are the inverted-V current (IinvV) and the high-low temperature linear current (IHLT), which appear in the form of sourcing and sinking currents, respectively. This design introduces an inverted-V current to mitigate the degradation of the compensation effect caused by temperature range drifts. By exploiting the characteristics of IinvVand IHLTexhibiting the same drift trend, the dual current compensation achieves the compensation performance over the entire automotive temperature range while mitigating the impact of temperature range drifts, thereby optimizing the overall compensation effect. The measured results show that it achieves the best TC of 2.0 ppm/°C and an average consumption current of 44 μA at room temperature. Moreover, the linear sensitivity (LS) is 0.04%/V and power supply rejection (PSR) is −60 dB at 1 Hz at room temperature.
Source: Integrated Circuits and Systems
Authors: Hanru Yang, Tianrui Lyu, Xiao Huang, Jianping Guo
Institution: Sun Yat-sen University
Language: English
Subfield: Biomedical Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: hybrid
OpenAlex ID: W4408709943