The invention proposes a novel biasing technique that adjusts automatically to compensate for process and temperature variations, thereby stabilizing resistance and current references on-chip. This approach aims to eliminate the need for external components and digital calibration, reducing power consumption and enhancing reliability in analog circuit designs.
Figure (1) Layout and die photo of the constant Gm circuit; (2) (a) Beta multiplier-based Gm -R bias circuit, (b) Proposed PT-invariant on-chip resistor
Current analog circuits suffer from significant variability in on-chip resistors and current sources due to process and temperature fluctuations. Existing solutions require expensive external components or complex digital calibration methods, leading to increased power consumption and potential reliability issues. There is a critical need for a cost-effective and reliable solution that can stabilize on-chip resistors and current references without external dependencies, ensuring consistent performance across varying conditions in analog circuitry.
- Constant On-chip Resistance: This technology utilizes process and temperature tracking bias circuits for maintaining constant on-chip resistance without external components.
- PT Invariance: It achieves PT-invariant quantities such as stable transconductance and PTAT current references across varying conditions.
- Reduced Cost: It eliminates the need for costly digital calibration methods and external precision resistors.
- Enhanced Reliability: It enhances analog circuit reliability by minimizing variability in resistors and current sources across different process corners and temperature ranges.
This novel circuit is fabricated and tested on the silicon chip technology and evaluated for its basic concept, and its formulation is being confirmed to ensure realistic end-use application.
The technology is currently being tested.
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This technology reduces electronic waste by promoting more reliable and durable analog circuits with longer operational lifespans. It lowers power consumption in electronic devices by eliminating the need for energy-intensive calibration techniques. It facilitates cost-effective production of electronic devices by reducing reliance on external components and calibration processes.
- Signal Processing: Analog integrated circuits for signal processing and filtering applications
- Sensors: Sensor interfaces require precise and stable current references
- Electronics: Power management circuits in portable electronics for efficient energy utilization
- Other Industries: Semiconductors, Telecommunication, Automotive Electronics
73/MUM/2012
410890