TMP422传感器变送器的温度传感器-模拟数字输出规格书PDF中文资料

TMP422属于传感器变送器的温度传感器-模拟数字输出。由德州仪器制造生产的TMP422温度传感器 - 模拟和数字输出模拟和数字输出温度传感器可用于测量环境热能量。特征包括传感器类型、本地感测温度、远程感测温度、输出类型、电源电压和分辨率。传感器类型为模拟本地/远程/红外、模拟数字、本地/远程、数字本地/远程/红外或内部，感应温度范围为 -55°C 至 200°C。

1 Features

• Supply range: 1.62V to 5.5V

• Wide operating range: –40°C to 125°C

• Remote channel accuracy: 0.8°C

– Resolution: 12-bit (0.0625°C)

• Local channel accuracy: 1°C

– Resolution: 8-bit (1°C)

• Support I2C and SMBus interface

• Low power consumption

• Additional features for improved temperature

measurement accuracy:

– Diode non-ideality factor (η-factor) correction

– Series resistance cancellation

– Programmable digital filter

• Remote diode fault detection

• 1.2V logic-compatible input thresholds

independent of supply

• Footprint compatible with the TMP432

2 Applications

• Standard notebook PC

• Rack server motherboard

• Smart network interface card (NIC)

• Small cell base station

• Baseband unit (BBU)

• Software-defined radio

3 Description

The TMP4719 device is a high-accuracy 1°C

temperature sensor with one local integrated sensor

and two remote temperature sensor channels that

can be connected to diode-connected transistors,

such as the popular MMBT3904 NPN transistor,

to replace traditional thermistors or thermocouples.

The remote channels can also be connected to

a substrate thermal transistor or diode integrated

inside microprocessors, microcontrollers, or FPGAs to

monitor the die temperature of the IC.

The TMP4719 supports series resistance

cancellation, programmable non-ideality factor

(η-factor), configurable temperature limits, and

programmable digital filters to improve the noise

immunity of the device and provide a robust design for

complex thermal environment monitoring applications.

The device supports I2C and SMBus communication

with logic levels down to 1.2V regardless of the main

supply rail, enabling interoperability with low-voltage

MCUs without needing a secondary low-voltage

supply or a bus level shifter.