TMP451-Q1 Texas instruments

TMP451-Q1

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TMP451-Q1

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Описание

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 TMP451-Q1 is available in a Wettable Flanks WSON package that provides a visual indicator of solderability to lower automatic visual inspection (AVI) time. 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.

Qualified for automotive applications
AEC-Q100 qualified with the following results:
- Device temperature grade 1: –40°C to 125°C ambient operating temperature range
±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-pin WSON (WDFN) packages
- 2.50-mm × 2.50-mm with Wettable Flanks (DQW)
- 2.00-mm × 2.00-mm (DQF)

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	Automotive
TI functional safety category	Functional Safety-Capable