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.
Type of IP
Faculty
Category of Patent
Department
- 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.
- 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.
- 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.
4
Tested in a lab environment and an early prototype has been developed.
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.