TMP451 Datasheet | Texas Instruments

Features - 1 ±1°C Accuracy for Local and Remote Diode Sensors - 0.0625°C Resolution for Local and Remote Channels - 1.7-V to 3.6-V Supply and Logic Voltage Range - 27-µA Operating Current, 3-µA Shutdown Current - Series Resistance Cancellation - η-Factor and Offset Correction - Programmable Digital Filter - Diode Fault Detection - Two-Wire and SMBus™ Serial Interface - 8-Lead WSON (WDFN) Package 2 Applications - Processor and FPGA Temperature Monitoring - Smart Phones and Tablets - Servers, Desktops, and Notebooks - Tele Equipment and Storage Area Networks (SANs) 3 Description 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 munication protocol. Advanced features such as series resistance cancellation, programmable nonideality factor (ηfactor), programmable offset, programmable temperature limits, and a programmable digital filter are bined 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. Device Information(1) PART NUMBER PACKAGE BODY SIZE (NOM) WSON (8) 2.00 mm × 2.00 mm (1) For all available packages, see the orderable addendum at the end of the data sheet. Simplified Schematic 1.7...