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Digital Temperature Sensor and Thermal Watchdog with Two Wire Interface.
SGM452 SGM452.pdf

No.13322

FEATURES

 No External Components Required

 Shutdown Mode to Minimize PowerConsumption

 Up to Eight SGM452 Devices can be Connectedto a Single Bus

 Power-Up Defaults Permit Stand-AloneOperation as Thermostat

 Power Supply Voltage Range: 2.7V to 5.5V

 Support 1.8V I2C Bus Voltage at 3.3V PowerSupply

 Low Quiescent Current: 49μA (TYP)

 Shutdown Mode Current: 0.4μA (TYP)

 Temperature Accuracy:

  -55℃ to +125℃: ±1.2℃ (MAX)

 Operating Temperature Range: -55℃ to +125℃

 Available in Green SOIC-8 and MSOP-8 Packages

DESCRIPTION

The SGM452 is an industry standard digital temperature sensor which integrates sigma-delta analog-to-digital converter (ADC) and I2C interface. This device provides 12-bit digital temperature readings with an accuracy of±1.2℃ from -55℃ to +125℃.

The SGM452 operates with a single power supply from 2.7V to 5.5V. I2C interface is used to communicate with SGM452 and it operates up to 400kHz. The device has three address pins to support up to eight SGM452 on the same I2C bus. The SGM452 has a dedicated over-temperature output with programmable limit and hysteresis. This output has programmable fault tolerance, which can be defined the number of consecutive error conditions that must occur before OS is activated. The wide temperature, wide power supply range and I2C interface make the SGM452 ideal for plenty of applications in which thermal management is critical for performance, such as wireless base stations, notebook computers, personal computers, etc.

The SGM452 is available in Green SOIC-8 and MSOP-8 packages and operates over an ambient temperature range of -55℃ to +125℃.

APPLICATION CIRCUIT
PIN CONFIGUTION
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