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DS1726U/T&R

更新时间： 2024-02-14 05:32:21
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 122K
描述
Serial Switch/Digital Sensor, 12 Bit(s), 0.50Cel, Rectangular, 8 Pin, Surface Mount, MICRO, SOP-8

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DS1726U/T&R 技术参数

是否无铅：含铅是否Rohs认证：不符合
生命周期：Obsolete包装说明：TSSOP8,.19
Reach Compliance Code：not_compliantECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：5.29
Is Samacsys：N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：e0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：Tin/Lead (Sn/Pb)
端接类型：SOLDERBase Number Matches：1

DS1726U/T&R 数据手册

 浏览型号DS1726U/T&R的Datasheet PDF文件第4页浏览型号DS1726U/T&R的Datasheet PDF文件第5页浏览型号DS1726U/T&R的Datasheet PDF文件第6页浏览型号DS1726U/T&R的Datasheet PDF文件第8页浏览型号DS1726U/T&R的Datasheet PDF文件第9页浏览型号DS1726U/T&R的Datasheet PDF文件第10页 
DS1626/DS1726  
Table 2. 12-BIT RESOLUTION TEMPERATURE/DATA RELATIONSHIP  
DIGITAL OUTPUT  
(BINARY)  
DIGITAL OUTPUT  
(HEX)  
TEMPERATURE (°C)  
+125  
+25.0625  
+10.125  
+0.5  
0111 1101 0000  
0001 1001 0001  
0000 1010 0010  
0000 0000 1000  
0000 0000 0000  
1111 1111 1000  
1111 0101 1110  
1110 0110 1111  
1100 1001 0000  
7D0h  
191h  
0A2h  
008h  
000h  
FF8h  
F5Eh  
E6Fh  
C90h  
0
-0.5  
-10.125  
-25.0625  
-55  
OPERATION—THERMOSTAT FUNCTION  
The DS1626/DS1726 thermostat outputs (THIGH, TLOW, and TCOM) are updated after every temperature  
conversion and remain at the updated values until the next conversion completes. THIGH is asserted when  
the measured temperature is higher than or equal to the value stored in the TH register, and TLOW is  
asserted when the temperature is equal to or falls below the value in the TL register (see Figure 5). TCOM  
uses both TH and TL to provide programmable hysteresis: when the measured temperature equals or  
exceeds TH, TCOM is asserted and it remains asserted until the temperature falls to a value equal to or  
below TL. All three thermostat outputs are active-high outputs.  
The Write TH and Write TL commands are used to program the 12-bit TH and TL registers with user-  
defined two’s complement values. The MSb (bit 11) of each register contains the two’s complement sign  
bit (S). For the TCOM thermostat output to function correctly, the TL value must be less than the TH value.  
Any unused LSbs in the TH and TL registers are forced to 0 regardless of the data written to those bits.  
The unused LSbs are determined by the conversion resolution set by R1 and R0 in the configuration  
register. Therefore, for 9-bit conversions bits 2 through 0 will be 0, for 10-bit conversions bit 1 and bit 0  
will be 0, and for 11-bit conversions bit 0 will be 0. All bits are used for 12-bit conversions, so no bits are  
forced to 0. However, regardless of the conversion resolution, when writing to TH or TL at least 12 bits  
must be sent following the Write TH or Write TL commands. The reason is that data written to TH and TL  
is not saved to EEPROM until the DS1626/DS1726 have received 12 bits, so if the operation is  
terminated before 12 bits have been received, the data will be lost. Any additional bits sent after the first  
twelve are ignored (e.g., if two 8-bit words are written).  
Another DS1626/DS1726 thermostat feature is the temperature-high flag (THF) and temperature-low flag  
(TLF) in the configuration register. These bits provide a record of whether the temperature has been  
greater than or equal to TH or less than or equal to TL at any time since the DS1626/DS1726 were  
powered up. If the temperature is greater than or equal to the TH register value, the THF bit in the  
configuration register will be set to 1. If the temperature is less than or equal to the TL register value, the  
TLF bit in the configuration register will be set to 1. Once THF and/or TLF has been set, it will remain  
set until the user overwrites it with a 0 or until the power is cycled.  
7 of 12  
1...45678910...12

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