Abstract: A circuit optimization method and system for a digital domain correction of a temperature sensor is provided. The method includes: subjecting negative temperature coefficient voltages Vbep and Vben to a switch timing control, thereby generating a corresponding negative temperature coefficient voltage Vbep and positive temperature coefficient voltage Dvbe as inputs into an operational transconductance amplifier (OTA) that serves as a core circuit of a Sigam-Delt analog-to-digital converter (ADC); and generating, by a switch sampling circuit, Vintx by integrating; inputting the Vintx into a comparator (CMP) to acquire a final ADC output; and sending a feedback through a digital domain to an analog domain control switch logic. The circuit optimization method intelligently finds the optimal temperature factor of different processes through the digital domain correction, thereby acquiring the desired ratio value more accurately.

Abstract: A drift-free humidity sensor and a calibration method thereof are provided. The drift-free humidity sensor includes a first humidity sensor unit and a second humidity sensor unit. The first humidity sensor unit includes a first measuring electrode, and a first humidity sensitive material is covered onto the first measuring electrode. The second humidity sensor unit includes a second measuring electrode, and a second humidity sensitive material is covered onto the second measuring electrode. The first humidity sensor unit and the second humidity sensor unit have different maximum humidity drifts. The drift-free humidity sensor effectively solves the drift problem of ordinary capacitive or resistive humidity sensors.

Abstract: The present disclosure provides a thermal management chip and system with a built-in interface host, and a management method. The thermal management chip includes a controllable current source sequence, a temperature sensing device category decision module, an analog-to-digital converter (ADC) module, a register bank & interface & control logic module, a non-volatile memory (NVM), a clock generator, and a local temperature sensing transistor. The thermal management chip further includes an Aip port, an Ain port, a pulse-width modulation (PWM) port, a tachometer (TACH) port, a master-slave mode select port, a serial data (SDA) port, a serial clock (SCL) port, and a status indication port.

Abstract: A drift-free humidity sensor and a calibration method thereof are provided. The drift-free humidity sensor includes a first humidity sensor unit and a second humidity sensor unit. The first humidity sensor unit includes a first measuring electrode, and a first humidity sensitive material is covered onto the first measuring electrode. The second humidity sensor unit includes a second measuring electrode, and a second humidity sensitive material is covered onto the second measuring electrode. The first humidity sensor unit and the second humidity sensor unit have different maximum humidity drifts. The drift-free humidity sensor effectively solves the drift problem of ordinary capacitive or resistive humidity sensors.