TMP6431DECT傳感器變送器的溫度傳感器-PTC熱敏電阻規(guī)格書PDF中文資料

TMP6431DECT屬于傳感器變送器的溫度傳感器-PTC熱敏電阻。由德州儀器制造生產(chǎn)的TMP6431DECT溫度傳感器 - PTC 熱敏電阻正溫度系數(shù) (PTC) 熱敏電阻溫度傳感器是隨著溫度升高而呈現(xiàn)出電阻增加的器件。與許多其他溫度傳感器類型相比，熱敏電阻產(chǎn)生的輸出信號相對較大且易于測量，但它們往往具有不穩(wěn)定且不適合精確溫度測量的特征。PTC 熱敏電阻尤其適合于過熱檢測應用，并且通常表現(xiàn)出明顯的非線性溫度-電阻關系，因此可用于檢測不精確的“高”溫條件，但不適于進行精確測量。

1 Features

? Silicon-based thermistor with a

positive temperature coefficient (PTC)

? Linear resistance change across temperature

? 47-kΩ nominal resistance at 25 °C (R25)

– ±1% maximum (0 °C to 70 °C)

? Wide operating temperature of –40 °C to +150 °C

? Consistent sensitivity across temperature

– 6400 ppm/°C TCR (25 °C)

– 0.2% typical TCR tolerance across temperature

range

? Fast thermal response time of 0.6 s (DEC)

? Long lifetime and robust performance

– Built-in fail-safe in case of short-circuit failures

– 0.5% typical long term sensor drift

2 Applications

? Temperature monitoring

– HVAC and thermostats

– Industrial control and appliances

? Thermal compensation

– Display backlights

– Building automation

? Thermal threshold detection

– Motor control

– Chargers

3 Description

Get started today with the Thermistor Design Tool,

offering complete resistance vs temperature table (RT

table) computation, other helpful methods to derive

temperature and example C-code.

Linear thermistors offer linearity and consistent

sensitivity across temperature to enable simple and

accurate methods for temperature conversion. Low

power consumption and a small thermal mass

minimize the impact of self-heating. With built-in

failsafe behavior at high temperatures and powerful

immunity to environmental variation, these devices

are designed for a long lifetime of high performance.

The small size of the TMP6 series also allows for

close placement to heat sources and quick response

times.

Take advantage of benefits over NTC thermistors

such as no extra linearization circuitry, minimized

calibration, less resistance tolerance variation, larger

sensitivity at high temperatures, and simplified

conversion methods to save time and memory in the

processor.

The TMP64 is currently available in a 0402 footprintcompatible

X1SON package and a 0603 footprintcompatible

SOT-5X3 package.