Datasheet > 传感器/换能器 > 温度传感器> DS1721U+T&R

DS1721U+T&R

更新时间： 2024-02-24 15:28:58

品牌	Logo	应用领域
美信 - MAXIM		传感器换能器输出元件监控
页数	文件大小	规格书
17页	269K
描述
Serial Switch/Digital Sensor, 12 Bit(s), 1Cel, Square, 8 Pin, Surface Mount, LEAD FREE, USOP-8

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DS1721U+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：	TSSOP8,.19
Reach Compliance Code：	compliant	ECCN代码：	EAR99
HTS代码：	8542.39.00.01	Factory Lead Time：	6 weeks
风险等级：	1.36	最大精度（摄氏度）：	1 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：	2-WIRE INTERFACE
封装主体材料：	PLASTIC/EPOXY	封装等效代码：	TSSOP8,.19
封装形状/形式：	SQUARE	电源：	3/5 V
传感器/换能器类型：	TEMPERATURE SENSOR,SWITCH/DIGITAL OUTPUT,SERIAL	子类别：	Other Sensors
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

DS1721U+T&R 数据手册

DS1721

ORDERING INFORMATION

ORDERING

INFORMATION

DS1721S

PACKAGE

MARKING

DESCRIPTION

DS1721 in 150 mil 8-pin SO

DS1721

DS1721S+

DS1721 (See Note) DS1721 in Lead-Free 150 mil 8-pin SO

DS1721S/T&R

DS1721S+T&R

DS1721

DS1721 in 150 mil 8-pin SO, 2500 Piece Tape-and-Reel

DS1721 (See Note) DS1721 in Lead-Free 150 mil 8-pin SO, 2500 Piece Tape-

and-Reel

DS1721U

1721

DS1721 in 8-pin uSOP

DS1721 in Lead-Free 8-pin uSOP

DS1721 in 8-pin uSOP, 3000 Piece Tape-and-Reel

DS1721 in Lead-Free 8-pin uSOP, 3000 Piece Tape-and-Reel

DS1721U+

1721 (See Note)

1721

DS1721U/T&R

DS1721U+T&R

1721 (See Note)

Note: A ”+” symbol will also be marked on the package near the Pin 1 indicator.

DETAILED PIN DESCRIPTION Table 1

PIN SYMBOL DESCRIPTION

SDA

SCL

T_OUT

Data input/output pin. For 2-wire serial communication port.

Clock input/output pin. For 2-wire serial communication port.

Thermostat output. Active when temperature exceeds TH; will reset when

temperature falls below TL.

GND

Ground pin.

Address input pin.

V_DD

Supply Voltage. 2.7V to 5.5V input power pin.

OVERVIEW

A block diagram of the DS1721 is shown in Figure 1.

The DS1721 consists of five major components:

1. Precision temperature sensor

2. Analog-to-digital converter

3. 2-wire interface electronics

4. Data registers

5. Thermostat comparator

The factory-calibrated temperature sensor requires no external components. Upon power-up, the DS1721

is in an idle mode. Upon issuance of a Start Convert T command [51h], the DS1721 begins temperature

conversions with the default resolution of 12 bits (0.0625°C resolution). Following an 8-bit command

protocol, temperature data can be read over the 2-wire interface. The host can periodically read the value

in the temperature register, which contains the last completed conversion. As conversions are performed

in the background, reading the temperature register does not affect the conversion in progress.

In power-sensitive applications, the user can put the DS1721 in a “one-shot” mode, under which the

sensor will complete and store one temperature conversion and return to a low-power standby state. In

time-sensitive applications, the user can change the conversion resolution from 12 bits to 9, 10, or 11.

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与DS1721U+T&R相关器件

型号	品牌	描述	获取价格	数据表
DS1721U-T,R	MAXIM	2-Wire Digital Thermometer and Thermostat	获取价格
DS1722	MAXIM	Digital Thermometer with SPI/3-Wire Interface	获取价格
DS1722	DALLAS	Digital Thermometer with SPI/3-Wire Interface	获取价格
DS1722	ADI	数字温度计，带有SPI/3线接口	获取价格
DS1722S	MAXIM	Digital Thermometer with SPI/3-Wire Interface	获取价格
DS1722S	DALLAS	IC-SM-DIGITAL THERMOMETER	获取价格

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