STTS751数据手册传感器变送器的温度传感器-模拟数字输出规格书PDF

描述 Description

The STTS751 is a digital temperature sensor which communicates over a 2-wire SMBus 2.0 compatible bus. The temperature is measured with a user-configurable resolution between 9 and 12 bits. At 9 bits, the smallest step size is 0.5 °C, and at 12 bits, it is 0.0625 °C. At the default resolution (10 bits, 0.25 °C/LSB), the conversion time is nominally 21 milliseconds.

The open-drain EVENT output is used to indicate an alarm condition in which the measured temperature has exceeded the user-programmed high limit or fallen below the low limit. When the EVENT pin is asserted, the host can respond using the SMBus Alert Response Address (ARA) protocol to which the STTS751 will respond by sending its slave address.

The STTS751 is a 6-pin device that supports user-configurable slave addresses. Via the pull-up resistor on the Addr/Therm pin, one of four different slave addresses can be specified. Two order numbers (STTS751-0 and STTS751-1) provide two different sets of slave addresses bringing the total available to eight. Thus, up to eight devices can share the same 2-wire SMBus without ambiguity, thereby allowing monitoring of multiple temperature zones in an application.

The two-wire interface can support transfer rates up to 400 kHz.

特性 Features

• Operating voltage 2.25 V to 3.6 V
• Operating temperature –40 °C to +125 °C
• Programmable
•10 different conversion rates 0.0625 to 32 conversions/sec. 1 conversion/sec. - default
•4 different resolutions 9-bit (0.5 °C/LSB) to12-bit (0.0625 °C/LSB) 10-bit (0.25 °C/LSB) - default
• Low supply current
•50 μA (typ) for 8 conversions/sec.
•20 μA (typ) for 1 conversion/sec.
•3 μA (typ) standby
• Accuracy
•±0.5 °C (typ) 0 °C to +85 °C
•±0.5 °C (typ) –40 °C to +125 °C
• One-shot mode for power saving
• Fast conversion time 21 ms (typ) 10-bit
• Pull-up resistor value allows single pin to select one of four slave addresses
• Supports 400 kHz serial clock
• SMBus 2.0 compatible
•SMBus ALERT (ARA) support
•SMBus timeout
• RoHS/green

简介

STTS751属于传感器变送器的温度传感器-模拟数字输出。由制造生产的STTS751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。