The TMP451 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 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 device is ideal for high-accuracy temperature measurements in multiple locations and in a variety of automotive subsystems. 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.
|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)||Approx. price (US$)|
||Remote||I2C, SMBus, 2-Wire||1||12||-40 to 125||1.7||3.6||40||ALERT||1||1||Catalog||WSON | 8||8WSON: 4 mm2: 2 x 2 (WSON | 8)||0.46 | 1ku|
||Remote||I2C, SMBus, 2-Wire||2.5||12||-40 to 125||2.7||5.5||30||ALERT||1||4||Catalog||
SOIC | 8
VSSOP | 8
8SOIC: 19 mm2: 3.91 x 4.9 (SOIC | 8)
8VSSOP: 15 mm2: 4.9 x 3 (VSSOP | 8)
|0.46 | 1ku|
||Remote||I2C, SMBus, 2-Wire||2.5||12||-40 to 125||2.7||5.5||38||One-shot conversion||1||9||Catalog||
DSBGA | 8
SOT-23 | 8
8DSBGA: 3 mm2: 2.3 x 1.3 (DSBGA | 8)
8SOT-23: 8 mm2: 2.8 x 2.9 (SOT-23 | 8)
|0.48 | 1ku|
||Remote||I2C, SMBus, 2-Wire||2.5||12||-40 to 125||2.7||5.5||38||One-shot conversion||2||4||Catalog||SOT-23 | 8||8SOT-23: 8 mm2: 2.8 x 2.9 (SOT-23 | 8)||0.57 | 1ku|
||Remote||I2C, SMBus, 2-Wire||2.5||12||-40 to 125||2.7||5.5||38||One-shot conversion||3||2||Catalog||SOT-23 | 8||8SOT-23: 8 mm2: 2.8 x 2.9 (SOT-23 | 8)||0.66 | 1ku|
||Remote||I2C, SMBus, 2-Wire||1||12||-40 to 125||1.7||3.6||375|