G-NICO-023 is a single-chip, versatile, new technology digital temperature sensor. It provides factory-calibrated temperature information. It includes a temperature sensing chip and a 24 bit ΔΣ-ADC. The essence of the digital 24 bit temperature value and the internal factory set calibration values lead to highly accurate temperature information accompanied by high measurement resolution. It can be interfaced to any microcontroller by an I²C or SPI interface. This microcontroller has to calculate the temperature result based on the ADC values and the calibration parameters. The basic working principle includes converting temperature into digital 16/24 bit ADC value, providing calibration coefficients, providing ADC value and calibration coefficients by SPI or I2C interface. The application includes industrial control, replacement of thermistors and NTCs, heating/cooling systems, and HVAC.