MUMBAI, India, Nov. 21 -- Intellectual Property India has published a patent application (202511078015 A) filed by Indian Institute Of Technology, Mandi, Himachal Pradesh, on Aug. 17, for 'system and method for current to frequency based self-calibrated and process-voltage-temperature insensitive time domain conversion.'
Inventor(s) include Puneet Kumar Mishra; Mohammad Waris; Sanjeev Mehta; Dr. Rahul Shrestha; and Dr. Hitesh Shrimali.
The application for the patent was published on Nov. 21, under issue no. 47/2025.
According to the abstract released by the Intellectual Property India: "A self-calibrated, process-voltage-temperature (PVT) insensitive current-to-frequency converter (CFC) system for high-precision analog-to-digital conversion in sensor interface application is disclosed. The system comprising: a signal acquisition and conversion circuit (100) comprising: a sensing and current regulation unit (101) to detect a physical parameter, and generate, stabilize and scale an analogue current signal; a current-to-frequency converter (CFC) (102) to convert the stabilized current signal into a frequency signal (FOUT) proportional to the current magnitude; a cascaded buffer unit (103) configured to condition the frequency signal to eliminate timing mismatches; and an N-bit frequency-to-digital converter (FDC) (104) comprising an asynchronous digital counter with (2N) flip-flops configured to digitize the frequency signal into an N-bit digital output; and a self-calibration circuit (200), coupled to the FDC (104) of the signal acquisition and conversion circuit (100), configured to compensate for PVT variations by generating a reference frequency signal using a maximum reference current (IMAX). It delivers low-latency, power-efficient digital outputs for real-time applications in biomedical instrumentation, aerospace, and IoT, offering enhanced accuracy, scalability, and reliability."
Disclaimer: Curated by HT Syndication.
