ADT7312WCZ-PT7

板上安装温度传感器 0.5"C ACC DIGITAL TEMP SENSOR SPI I/face

Product Details

The ADT7312 is a ±1°C accurate digital temperature sensor that operates over a very wide temperature range, −55°C to +175°C available in die form only. It contains an internal band gap reference, a temperature sensor, and a 16-bit analog-to-digital converter ADC to monitor and digitize the temperature to a resolution of 0.0078°C. The ADC resolution, by default, is set to 13 bits 0.0625°C. The ADC resolution is a user programmable mode that can be changed through the serial interface.

The ADT7312 is guaranteed to operate over supply voltages from 2.7 V to 5.5 V. At 3.6 V operation, the average supply current is typically 245 μA. The ADT7312 has a shutdown mode that powers down the device, resulting in a typical shutdown current of 2.5 μA at 3.6 V. The ADT7312 is rated for operation over the −55°C to +175°C temperature range.

The CT pin is an open-drain output that becomes active when the temperature exceeds a programmable critical temperature limit. The default critical temperature limit is 147°C. The INT pin is also an open-drain output that becomes active when the temperature exceeds a programmable limit. The INT pin and the CT pin can operate in either comparator or interrupt mode.

**Product Highlights**

1. Ease of use, no calibration or correction required.

2. Low power consumption.

3. Excellent long-term stability and reliability.

4. Qualified for automotive applications.

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**Applications**

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Automotive

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High temperature monitoring

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High temperature thermal protection

### Features and Benefits

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Qualified for automotive applications

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Temperature accuracy:

 ±1°C from −55°C to +175°C 2.7V to 3.3V

16-bit temperature resolution: 0.0078°C

Fast first temperature conversion on power-up of 6 ms

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Easy implementation:

No temperature calibration or correction required

No linearity correction required

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Low power:

Power-saving 1 sample per second SPS mode

880 μW typical at 3.6 V in normal mode

9 μW typical at 3.6 V in shutdown mode

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Wide operating ranges:

Temperature range: −55°C to +175°C

Voltage range: 2.7 V to 5.5 V

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Programmable interrupts:

Critical overtemperature interrupt

Overtemperature/undertemperature interrupt

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SPI-compatible interface

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Available in die form only