MegaChips has been granted a patent for an integrated circuit device featuring a MEMS resonator that compensates for temperature-dependent frequency variations. The device includes temperature sensors and circuitry to generate a timing signal with reduced temperature variation, along with digital correction factors for external timing signal adjustments. GlobalData’s report on MegaChips gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on MegaChips, Cloud gaming was a key innovation area identified from patents. MegaChips's grant share as of June 2024 was 67%. Grant share is based on the ratio of number of grants to total number of patents.
Temperature-compensated timing signal generator using mems resonator
The patent US12047071B1 describes an integrated circuit device that incorporates a microelectromechanical systems (MEMS) resonator and temperature-sensing capabilities to enhance timing signal accuracy. The device consists of a first die housing the MEMS resonator, which vibrates at a resonant frequency that varies with temperature. A sensor, which can be a thermistor or another type, is employed to monitor both the operating temperature of the MEMS resonator and its resonant frequency. The second die contains circuitry that processes the signals from the sensor to generate a timing signal with reduced low-order temperature-dependent variations. Additionally, the circuitry identifies digital correction factors that account for high-order temperature-dependent variations, which can be utilized by an external device to further refine the timing signal.
The integrated circuit device may feature various configurations, including the placement of sensors on either die and the use of stacked die arrangements with thermally conductive materials for efficient heat transfer. The circuitry can implement analog temperature compensation and may include complementary metal oxide semiconductor (CMOS) technology. Notably, the device can utilize multiple MEMS resonators to enhance temperature sensitivity and accuracy. The timing signal generation may involve a locked-loop circuit that adjusts based on the sensed temperature, and the digital correction factors can be derived from a look-up table. This innovative approach aims to improve the reliability and precision of timing signals in applications sensitive to temperature fluctuations.
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