The TMP451-Q1 device is a high-accuracy, low-power remote temperature sensor monitor with a built-in local temperature sensor. The remote temperature sensors are typically low-cost discrete NPN or PNP transistors, or substrate thermal transistors or diodes that are integral parts of microprocessors, microcontrollers, or FPGAs. The temperature is represented as a 12-bit digital code for both the local and the remote sensors, giving a resolution of 0.0625°C. The temperature accuracy is ±1°C (maximum) in the typical operating range for the local and the remote temperature sensors. The two-wire serial interface accepts the SMBus communication protocol.
Advanced features such as series resistance cancellation, programmable nonideality factor (η-factor), programmable offset, programmable temperature limits, and a programmable digital filter are combined to provide a robust thermal monitoring solution with improved accuracy and noise immunity.
The TMP451-Q1 device is ideal for multi-location, high-accuracy temperature measurements in a variety of automotive sub-systems. The device is specified for operation over a supply voltage range of 1.7 V to 3.6 V and a temperature range of –40°C to 125°C.
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|Part number||Order||Device type||Interface||Local sensor accuracy (Max) (+/- C)||Temp resolution (Max) (bits)||Operating temperature range (C)||Supply voltage (Min) (V)||Supply voltage (Max) (V)||Supply current (Max) (uA)||Features||Remote channels (#)||Addresses||Rating||Package Group||Package size: mm2:W x L (PKG)|
||Remote||I2C, SMBus, 2-Wire||1||12||-40 to 125||1.7||3.6||40||
|1||1||Automotive||WSON | 8||See datasheet (WSON)|
||Remote||I2C, SMBus, 2-Wire||2.5||12||-40 to 125||2.7||5.5||30||
|1||4||Automotive||VSSOP | 8||8VSSOP: 15 mm2: 4.9 x 3 (VSSOP | 8)|