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DS1726U+

更新时间： 2024-01-01 04:28:37
品牌 Logo 应用领域
美信 - MAXIM 输出元件传感器换能器
页数 文件大小 规格书
12页 147K
描述
High-Precision 3-Wire Digital Thermometer and Thermostat

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DS1726U+ 技术参数

是否无铅： 不含铅是否Rohs认证： 符合
生命周期：Active包装说明：TSSOP8,.19
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8542.39.00.01Factory Lead Time：6 weeks
风险等级：1.01最大精度（摄氏度）：0.5 Cel
主体宽度：3 mm主体高度：1.1 mm
主体长度或直径：3 mm外壳：PLASTIC
JESD-609代码：e3安装特点：SURFACE MOUNT
位数：12端子数量：8
最大工作电流：1.25 mA最高工作温度：125 °C
最低工作温度：-55 °C输出接口类型：3-WIRE INTERFACE
封装主体材料：PLASTIC/EPOXY封装等效代码：TSSOP8,.19
封装形状/形式：RECTANGULAR电源：3/5 V
传感器/换能器类型：TEMPERATURE SENSOR,SWITCH/DIGITAL OUTPUT,SERIAL子类别：Other Sensors/Transducers
最大供电电压：5.5 V最小供电电压：2.7 V
表面贴装：YES端子面层：Matte Tin (Sn)
端接类型：SOLDER

DS1726U+ 数据手册

 浏览型号DS1726U+的Datasheet PDF文件第3页浏览型号DS1726U+的Datasheet PDF文件第4页浏览型号DS1726U+的Datasheet PDF文件第5页浏览型号DS1726U+的Datasheet PDF文件第7页浏览型号DS1726U+的Datasheet PDF文件第8页浏览型号DS1726U+的Datasheet PDF文件第9页 
DS1626/DS1726  
OPERATION—MEASURING TEMPERATURE  
The DS1626/DS1726 measure temperature using a bandgap-based temperature sensor. A delta-sigma  
analog-to-digital converter (ADC) converts the measured temperature to a digital value that is calibrated  
in degrees Celsius; for Fahrenheit applications a lookup table or conversion routine must be used.  
Communication with the DS1626/DS1726 is achieved through a 3-wire serial interface, and all data is  
transmitted LSb first.  
The DS1626/DS1726 can be programmed to take continuous temperature measurements (continuous  
conversion mode) or to take single temperature measurements on command (one-shot mode). The  
measurement mode is programmed by the 1SHOT bit in the configuration register as explained in the  
CONFIGURATION REGISTER section of this data sheet. The 1SHOT bit is stored in EEPROM, so it can  
be programmed prior to installation if desired. In continuous conversion mode, when a Start Convert T  
command is issued the DS1626/DS1726 perform consecutive temperature measurements until a Stop  
Convert T command is issued. In one-shot mode, the Start Convert T command causes one temperature  
measurement to be taken and then the DS1626/DS1726 return to a low-power idle state.  
The resolution of the DS1626/DS1726 digital temperature data is user-configurable to 9, 10, 11, or 12  
bits, corresponding to temperature increments of 0.5°C, 0.25°C, 0.125°C, and 0.0625°C, respectively.  
The resolution is set by the EEPROM R0 and R1 bits in the configuration register. Note that the  
conversion time doubles for each additional bit of resolution.  
After each temperature measurement and analog-to-digital conversion, the DS1626/DS1726 store the  
measured temperature as a two’s complement number in the 12-bit temperature register (see Figure 4).  
The sign bit (S) indicates if the temperature is positive or negative: for positive numbers S = 0 and for  
negative numbers S = 1. The Read Temperature command provides user access to the temperature  
register.  
When the DS1626/DS1726 are configured for 12-bit resolution, all 12 bits of the temperature register will  
contain temperature data. For 11-bit resolution, the 11 MSbs (bits 11 through 1) of the temperature  
register will contain data and bit 0 will read out as 0. Likewise, for 10-bit resolution, the 10 MSbs (bits 11  
through 2) will contain data, and for 9-bit the 9 MSbs (bits 11 through 3) will contain data, and all unused  
LSbs will contain 0s. Since the DS1626/DS1726 transmit data LSb first, when reading data from the  
temperature register, all 12 bits must be read in order to receive all MSbs of the measured data, regardless  
of the conversion resolution. Table 2 gives examples of 12-bit resolution digital output data and the  
corresponding temperatures.  
Figure 4. TEMPERATURE, TH, and TL REGISTER FORMAT  
BIT 11  
BIT 10  
BIT 9  
BIT 8  
BIT 7  
BIT 6  
BIT 5  
BIT 4  
BIT 3  
BIT 2  
BIT 1  
BIT 0  
S
26  
25  
24  
23  
22  
21  
20  
2-1  
2-2  
2-3  
2-4  
6 of 12  
1...3456789...12

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