STDS75

数字式温度传感器和热看门狗

制造商:

中文资料及数据手册

在线购买

产品信息

The STDS75 is a high-precision CMOS (digital) temperature sensor IC with a delta-sigma analog-to-digital (ADC) converter and an I2C-compatible serial digital interface. It is targeted for general applications such as personal computers, system thermal management, electronics equipment, and industrial controllers, and is packaged in the industry-standard 8-lead TSSOP package.

The device contains a bandgap temperature sensor and programmable 9- to 12-bit ADC which monitor and digitize the temperature to a resolution up to 0.0625 °C. The STDS75 is typically accurate to (±3 °C - max) over the full temperature measurement range of –55 °C to 125 °C with ±2 °C accuracy in the –25 °C to +100 °C range. At power-up, the STDS75 defaults to 9-bit resolution for software compatibility with the STLM75.

The STDS75 is specified for operating at supply voltages from 2.7 V to 5.5 V. Operating at 3.3 V, the supply current is typically (125 μA).

The onboard delta-sigma analog-to-digital converter (ADC) converts the measured temperature to a digital value that is calibrated in °C; for Fahrenheit applications a lookup table or conversion routine is required.

The STDS75 is factory-calibrated and requires no external components to measure temperature

stds75是一种高精度的CMOS(数字)与Δ∑模数转换器(ADC)温度传感器IC和一个I2C兼容的串行数字接口。这是针对一般的应用,如个人电脑、热管理系统、电子设备、工业控制器,并在包装行业标准的8引脚TSSOP封装

该器件包含一个带温度传感器和可编程的9 - 12位ADC监测和数字化的温度分辨率高达0.0625°C. stds75通常是准确的(±3°C max)在–55°C全温度测量范围为125°C 2 C±°精度在–25°C + 100°C系列。在上电,该stds75默认为9位与stlm75软件兼容分辨率。

stds75的操作电源电压从2.7 V到5.5 V操作在3.3 V的电源电流通常是指定的,(125μ一)

船上的Δ-∑模数转换器(ADC)转换成数字值,测得的温度是°C校准;为华氏应用查找表或转换程序是必需的。

stds75的工厂校准,不需要外部元件来测量温度

Key Features

  • Measures temperatures from –55 °C to +125 °C (–67 °F to +257 °F)

  • ±0.5 °C (typ) accuracy

  • ±2 °C (max) accuracy from –25 °C to +100 °C

  • Low operating current: 125 μA (typ)

  • No external components required

  • 2-wire I2C/SMBus-compatible serial interface

  • Selectable serial bus address allows connection of up to eight devices on the same bus

  • Thermometer resolution is user-configurable from 9 (default) to 12 bits (0.5 °C to 0.0625 °C)

  • 9-bit conversion time is 150 ms (max)

  • Programmable temperature threshold and hysteresis set points

  • Wide power supply range - operating voltage range: 2.7 V to 5.5 V

  • Pin- and software-compatible with DS75 (drop-in replacement)

  • Power-up defaults permit standalone operation as thermostat

  • Shutdown mode to minimize power consumption

  • Separate open drain output pin operates as an interrupt or comparator/thermostat output (dual purpose event pin)

  • MSOP8 (TSSOP8) package

主要特点

测量温度从55°到125°(67°f)

±0.5°C(典型值)的精度

±2°C(最大)精度由- 25°为±100°

低工作电流:125μ一(典型值

无需外部元件

2线I2C和SMBus兼容串行接口

可选的串行总线地址允许多达八个设备在同一总线连接

温度计分辨率为用户配置的9(默认)为12位(0.5摄氏度至0.0625摄氏度)

9位转换时间为150毫秒(最大)

可编程温度阈值和滞后集点

电源电压范围:工作电压范围:2.7伏至5.5伏

引脚和软件兼容ds75(下降的替代)

电源默认允许独立运行作为温控器

关机模式,以尽量减少电力消耗

单独的开漏输出引脚作为一个中断或比较器/温控器输出(双目的事件引脚)

MSOP8封装(采用TSSOP8)


电路图、引脚图和封装图

    STDS75电路图

      STDS75引脚图

        STDS75封装图

        应用案例