STCN75
数字式温度传感器和热看门狗
制造商:
产品信息
The STCN75 is a high-precision digital CMOS temperature sensor IC with a sigma-delta temperature-to-digital 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 9-bit ADC which monitor and digitize the temperature to a resolution up to 0.5 °C. The STCN75 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. The STCN75 is pin-for-pin and software compatible with the TCN75.
The STCN75 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 sigma-delta analog-to-digital converter (ADC) converts the measured temperature to a digital value that is calibrated in degrees centigrade; for Fahrenheit applications a lookup table or conversion routine is required.
The STCN75 is factory-calibrated and requires no external components to measure temperature.
stcn75是一个高精度的数字CMOS温度传感器IC采用∑-Δ温度数字转换器和一个I2C兼容串行数字接口。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9位ADC监测和数字化的温度分辨率高达0.5°C. stcn75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。是的stcn75引脚对引脚和软件兼容的TCN75。
是的stcn75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)
板载的Sigma-Delta模数转换器(ADC)转换为数字值,测量的温度是摄氏度校准;为华氏应用查找表或转换程序是必需的。
是的stcn75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 bus address allows connection of up to eight devices on the bus
Wide power supply range - operating voltage range: 2.7 V to 5.5 V
Conversion time is 45 ms (typ)
Programmable temperature threshold and hysteresis set points
Pin- and software-compatible with TCN75 (drop-in replacement)
Power-up defaults permit standalone operation as a thermostat
Shutdown mode to minimize power consumption
Output pin (open drain) can be configured for interrupt or comparator/thermostat mode (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
可选总线地址允许连接多达八个设备在总线上
电源电压范围:工作电压范围:2.7伏至5.5伏
转换时间为45毫秒(典型值)
可编程温度阈值和滞后集点
引脚和软件兼容(TCN75下降的替代)
电源默认允许独立运行作为一个温控器
关机模式,以尽量减少电力消耗
输出引脚(开漏)可以配置为中断或比较器/温控器模式(双目的事件引脚)
MSOP8封装(采用TSSOP8)