A Self-Biased Subthreshold CMOS Voltage Reference with Temperature Compensation Circuit for IoT Self-Powered Sensor Applications
- Resource Type
- Conference
- Authors
- Huang, Yuxuan; Yan, Feng; Sun, Kangkang; Liu, Jingjing
- Source
- 2023 IEEE Asia Pacific Conference on Circuits and Systems (APCCAS) APCCAS Circuits and Systems (APCCAS), 2023 IEEE Asia Pacific Conference on. :134-138 Nov, 2023
- Subject
- Communication, Networking and Broadcast Technologies
Components, Circuits, Devices and Systems
Power, Energy and Industry Applications
Robotics and Control Systems
Signal Processing and Analysis
CMOS voltage reference (VR)
subthreshold
self-biased
low power
line sensitivity
low supply voltage
temperature coefficient
low area
- Language
- ISSN
- 2768-3516
This paper presents a subthreshold CMOS voltage reference structure that utilizes self-biased circuits. This voltage reference includes temperature compensation circuits to expand its operating temperature range and reduce its temperature coefficient. The proposed CMOS voltage reference is designed using a standard $\mathbf{0}.\mathbf{18}-{\mu} \mathbf{m}$ CMOS process and has a small area of only 0.005 mm 2 . Post-layout simulation results demonstrate that the power consumption of the circuit at room temperature (25°C) is only 1.65 nW at a power supply voltage of 1 V. In this case, the voltage reference output is 316.56 mV, with a temperature coefficient (TC) of 2.79 ppm/°C in a wide temperature range from -40°C to 140 °C. Furthermore, the line sensitivity (LS) of the circuit is 0.022 %/V.