DS1624S+T&R

更新时间： 2024-01-29 22:06:21

品牌	Logo	应用领域
美信 - MAXIM		存储
页数	文件大小	规格书
20页	667K
描述
Digital Thermometer and Memory

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DS1624S+T&R 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：	SOP8,.3
Reach Compliance Code：	compliant	ECCN代码：	EAR99
HTS代码：	8542.39.00.01	Factory Lead Time：	6 weeks
风险等级：	1.37	Is Samacsys：	N
其他特性：	COMPLIANCE TO MIL-208	主体宽度：	5.285 mm
主体高度：	1.98 mm	主体长度或直径：	5.31 mm
外壳：	PLASTIC	JESD-609代码：	e3
安装特点：	SURFACE MOUNT	位数：	13
端子数量：	8	最大工作电流：	1 mA
最高工作温度：	125 °C	最低工作温度：	-55 °C
输出接口类型：	2-WIRE INTERFACE	封装主体材料：	PLASTIC/EPOXY
封装等效代码：	SOP8,.3	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
Base Number Matches：	1

DS1624

OPERATION-MEASURING TEMPERATURE

A block diagram of the DS1624 is shown in Figure 1. The DS1624 measures temperatures through the

use of an on–board proprietary temperature measurement technique. A block diagram of the temperature

measurement circuitry is shown in Figure 4.

The DS1624 measures temperature by counting the number of clock cycles that an oscillator with a low

temperature coefficient goes through during a gate period determined by a high temperature coefficient

oscillator. The counter is preset with a base count that corresponds to –55°C. If the counter reaches zero

before the gate period is over the temperature register, which is also preset to the –55°C value, is

incremented indicating that the temperature is higher than –55°C.

At the same time, the counter is preset with a value determined by the slope accumulator circuitry. This

circuitry is needed to compensate for the parabolic behavior of the oscillators over temperature. The

counter is then clocked again until it reaches zero. If the gate period is still not finished, then this process

repeats.

The slope accumulator is used to compensate for the nonlinear behavior of the oscillators over

temperature, yielding a high resolution temperature measurement. This is done by changing the number

of counts necessary for the counter to go through for each incremental degree in temperature. To obtain

the desired resolution, both the value of the counter and the number of counts per °C (the value of the

slope accumulator) at a given temperature must be known.

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DS1626S+	MAXIM	Serial Switch/Digital Sensor, 12 Bit(s), 0.50Cel, Rectangular, Surface Mount, LEAD FREE, S	获取价格