ADT7320

Preliminary Technical Data FEATURES Temperature accuracy ±0.25°C from −20°C to +105°C 13- or 16-bit user-selectable temperature-to-digital converter Low drift silicon temperature sensor No temperature calibration/correction required by user Power saving 1 sample per second (SPS) mode Fast first conversion on power-up of 6 ms SPI-compatible interface Operating temperature from −40°C to +150°C Operating voltage: 2.7 V to 5.5 V Critical overtemperature indicator Programmable overtemperature/undertemperature interrupt Low power consumption: 700 μW typical at 3.3 V Shutdown mode for lower power: 7 μW typical at 3.3 V 16-lead RoHS-compliant LFCSP package ±0.25°C Accurate, 16-Bit Digital SPI Temperature Sensor ADT7320 www.DataSheet4U.com GENERAL DESCRIPTION The ADT7320 is a high accuracy digital temperature sensor offering breakthrough performance over a wide industrial range, housed in an LFCSP package. It contains a band gap temperature reference and a 13-bit analog-to-digital converter (ADC) to monitor and digitize the temperature to a 0.0625°C resolution. The ADC resolution, by default, is set to 13 bits (0.0625°C). This can be changed to 16 bits (0.0078°C) by setting Bit 7 in the configuration register (Register Address 0x01). The ADT7320 is guaranteed to operate over supply voltages from 2.7 V to 5.5 V. Operating at 3.3 V, the average supply current is typically 210 μA. The ADT7320 has a shutdown mode that powers down the device and offers a shutdown current of typically 2 μ...