±1°C Accurate, 12-Bit Digital Temperature Sensor

The ADT75 is a complete temperature monitoring system in 8-lead MSOP and SOIC packages. It contains a band gap temperature sensor and 12-bit Aanalog-to-digital converter (ADC) to monitor and digitize the temperature to a resolution of 0.0625°C. The ADT75 is pin and register compatible with the LM75 and AD7416.

The ADT75 is specified for operation at supply voltages from 2.7 V to 5.5 V. Operating at 3.3 V, the average supply current is typically 200 μA.

The ADT75 offers a shutdown mode that powers down the device and this mode gives a shutdown current of typically 3 μA. The ADT75 is rated for operation over the –55°C to +125°C temperature range.

The A0, A1, and A2 pins are available for address selection. The OS/ALERT pin is an open-drain output that becomes active when temperature exceeds a programmable limit. The OS/ALERT pin can operate in either comparator or interrupt mode.

Product Highlights

* On-chip temperature sensor allows an accurate measurement of the ambient temperature. The measurable temperature range is −55°C to +125°C.

* Supply voltage is 2.7 V to 5.5 V.

* Space-saving, 8-lead MSOP and 8-lead SOIC.

* Temperature accuracy is ±1°C maximum.

* Temperature resolution is 0.0625°C.

* Shutdown mode reduces the current consumption to 3 μA typical.

* Connect up to eight ADT75s to a single SMBus/I2C bus.

Applications

* Isolated Sensors

* Environmental Control Systems

* Computer Thermal Monitoring

* Thermal Protection

* Industrial Process Control

* Power-system Monitors

* Hand Held Applications

* 12-bit Temperature-to-digital Converter

* B-Grade Accuracy ±1.0°C from

0°C to 70°C

* A-Grade Accuracy ±2.0°C from

–25°C to 100°C

* SMBus-/I2C- Compatible Interface

* Operation from −55°C to +125°C

* Operation from 2.7 V to 5.5 V