TMP451 Texas instruments

TMP451

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TMP451

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Описание

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.

±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

Local sensor accuracy (max)	1
Type	Remote
Operating temperature range (°C)	-40 to 125
Supply voltage (min) (V)	1.7
Interface type	I2C, SMBus
Supply voltage (max) (V)	3.6
Features	ALERT
Supply current (max) (µA)	40
Temp resolution (max) (Bits)	12
Remote channels (#)	1
Addresses	1
Rating	Catalog