Datasheet > DS1721

DS1721

更新时间： 2023-12-20 18:45:51

品牌	Logo	应用领域
亚德诺 - ADI		监控
页数	文件大小	规格书
17页	257K
描述
数字温度计和温度监控器

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DS1721 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DS1721相关器件

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DS1721S	MAXIM	2-Wire Digital Thermometer and Thermostat	获取价格
DS1721S/T&R	MAXIM	Serial Switch/Digital Sensor, 12 Bit(s), 1Cel, Rectangular, 8 Pin, Surface Mount, 0.150 IN	获取价格
DS1721S/T&R+W	MAXIM	Serial Switch/Digital Sensor,	获取价格
DS1721S/T,R	MAXIM	2-Wire Digital Thermometer and Thermostat	获取价格
DS1721S+	MAXIM	Serial Switch/Digital Sensor, 12 Bit(s), 1Cel, Rectangular, 8 Pin, Surface Mount, 0.150 IN	获取价格
DS1721S-T,R	MAXIM	2-Wire Digital Thermometer and Thermostat	获取价格