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.
|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)|
|Remote channels (#)|
|Package size: mm2:W x L (PKG)|
|I2C, SMBus, 2-Wire||I2C, SMBus, 2-Wire|
|-40 to 125||-40 to 125|
|WSON | 8||VSSOP | 8|
|See datasheet (WSON)||8VSSOP: 15 mm2: 4.9 x 3 (VSSOP | 8)|
|Order now||Order now|