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ATS75D8

更新时间： 2024-01-16 01:34:50

品牌	Logo	应用领域
其他 - ETC		传感器温度传感器
页数	文件大小	规格书
16页	262K
描述
LOW- OLTAGE 2-WIRE DIGITAL TEMPERATURE SENSOR With Thermal Alarm

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技术参数
数据手册

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ATS75D8 技术参数

生命周期：	Obsolete	Reach Compliance Code：	unknown
风险等级：	5.84	Is Samacsys：	N
Base Number Matches：	1

ATS75D8 数据手册

aTS75

Comparator Mode

Interrupt Mode

In Comparator Mode, each time an temperature-to-

digital(T-to-D) temperature conversion occurs, the new

digital temperature is compared to the value stored in the

T_OSand T_HYSTRegisters. If a fault tolerance number of

consecutive temperature measurements are greater than

the value stored in the T_OSRegister, the O.S. output will be

activated. For example, if bits F1 and F0 are equal to “10”

In Interrupt Mode the O.S. output will first become active

after a fault tolerance number of consecutive temperature

measurements exceed the value stored in the T_OSRegister

(similar to Comparator Mode). Once O.S. is active, it can

only be cleared by a user read from any of the aTS75

registers (Temperature, Configuration, T_OS, or T_HYST) or by

putting the aTS75 into Shutdown Mode (i.e., by setting the

shutdown bit in the Configuration Register to “1”). Once

cleared, the O.S. output can only be activated again by a

fault tolerance number of consecutive temperature

measurements that are lower than the value stored in

T_HYST. Again, once it is activated the O.S. output can only

be deactivated by a user read or shutdown. Thus, in

Interrupt Mode the activate/clear cycle for O.S. has the

(fault tolerance

= 4), four consecutive temperature

measurements must exceed T_OSto activate the O.S.

output. Once the O.S output is active, it will remain active

until the first time the measured temperature drops below

the temperature stored in the T_HYSTRegister.

The

operation of the alarm in Comparator Mode with fault

tolerance=2 is illustrated in Figure 1.

following pattern:

temperature

T_OS

clear,

temperature < T_HYST, clear, temperature > T_OS, clear, etc.

The operation of the alarm in Interrupt Mode with fault

tolerance=2 is also illustrated in Figure 1.

Temperature-to-Digital

Conversion

T_OS

T_HYST

O.S. (Comparator Mode)

O.S. (Interrupt Mode)

For this example:

Fault Tolerance = 2

Output Polarity = Active Low

Read (or Shutdown)

Figure 1. Thermal Alarm Operation in Comparator and Interrupt Modes

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