This invention introduces a new type of electronic circuit, a current-mode CMOS voltage reference, which provides a stable and reliable voltage output despite changes in manufacturing, power supply, and temperature. It achieves this without needing costly adjustments or noisy mechanisms, making it ideal for low-power, low-cost applications like wearable medical devices, wireless sensors, and other portable electronics. Operating efficiently at just 1 volt and consuming minimal power, this invention extends battery life and ensures consistent performance in various conditions.
Figure (1) Proposed CMOS voltage reference
Traditional voltage reference circuits, essential for many electronic applications, struggle to perform well in modern low-power devices because they require higher voltages and involve components that cause inconsistencies. To make matters worse, current solutions often need costly adjustments and add noise, making them less desirable. There is a pressing need for a better method that provides a stable voltage reference without these drawbacks. This invention introduces a new CMOS voltage reference that remains stable despite changes in manufacturing, power supply, and temperature, making it ideal for low-power, cost-effective electronics.
- Subthreshold Operation: Utilizes subthreshold HVT and RVT NMOS transistors to achieve process insensitivity.
- Tail-less Op-Amp Design: Employs tail-less op-amps to enhance supply voltage insensitivity.
- PVT Independence: Achieves low sensitivity to process, supply voltage, and temperature (PVT) variations.
- No Trimming or Switching: Maintains accurate voltage reference without the need for costly trimming or noisy switching mechanisms.
- Ultra-Low Power Consumption: Operates at a minimum supply voltage of 1V, drawing a maximum current of only 577nA.
- High Precision: Delivers a temperature coefficient of 4 ppm/°C and line sensitivity of 0.026%/V, ensuring stable performance.
Fabricated and tested silicon chip in the lab environment and an early prototype has been developed.
Tested in a lab environment and an early prototype has been developed.
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- Extended Battery Life: This invention helps portable devices like medical gadgets and sensors last longer between charges by using very little power.
- Increased Reliability: It ensures electronic devices work reliably under varying conditions, which is crucial for critical applications like biomedical implants.
Wearable Technology, Medical Devices, Wireless Sensors, Consumer Electronics, Energy Harvesting Systems
- Portable Medical Devices: Ensures reliable operation and extended battery life for wearable health monitors and implants.
- Wireless Sensors: Provides stable voltage references for low-power sensors used in smart homes and environmental monitoring.
2513/MUM/2014
403746