The TMP461 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 field-programmable gate arrays (FPGAs). Temperature is represented as a 12-bit digital code for both local and remote sensors, giving a resolution of 0.0625°C. The two-wire serial interface accepts the SMBus communication protocol with up to nine different pin-programmable addresses.
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 TMP461 is ideal for multi-location, high-accuracy temperature measurements in a variety of communication, computing, instrumentation, and industrial applications. 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)|
||Remote||I2C, SMBus, 2-Wire||1||12||-40 to 125||1.7||3.6||375||
Remote diode fault detection
|1||9||Catalog||QFN | 10||10QFN: 4 mm2: 2 x 2 (QFN | 10)|
||Remote||I2C, SMBus, 2-Wire||2.5||12||-40 to 125||2.7||5.5||30||
SOIC | 8
VSSOP | 8
8SOIC: 19 mm2: 3.91 x 4.9 (SOIC | 8)
8VSSOP: 15 mm2: 4.9 x 3 (VSSOP | 8)
||Remote||I2C, SMBus, 2-Wire||2.5||12||-40 to 125||2.7||5.5||38||Shutdown||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)
||Remote||I2C, SMBus, 2-Wire||2.5||12||-40 to 125||2.7||5.5||38||Shutdown||2||4||Catalog||SOT-23 | 8||8SOT-23: 8 mm2: 2.8 x 2.9 (SOT-23 | 8)|
||Remote||I2C, SMBus, 2-Wire||2.5||12||-40 to 125||2.7||5.5||38||Shutdown||3||2||Catalog||SOT-23 | 8||8SOT-23: 8 mm2: 2.8 x 2.9 (SOT-23 | 8)|
||Remote||I2C, SMBus, 2-Wire||1||12||-40 to 125||1.7||3.6||40||
|1||1||Catalog||WSON | 8|