DS1821S+

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DS1821S+

SENSOR DIGITAL -55C-125C 8SO

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Thông số kỹ thuật

Part Status Obsolete
Sensor Type Digital, Local
Sensing Temperature - Local -55°C ~ 125°C
Output Type 1-Wire®
Voltage - Supply 2.7V ~ 5.5V
Resolution 8 b
Features One-Shot, Output Switch, Programmable Limit, Standby Mode
Accuracy - Highest (Lowest) ±1°C
Test Condition 0°C ~ 85°C
Operating Temperature -55°C ~ 125°C
Mounting Type Surface Mount
Package / Case 8-SOIC (0.209", 5.30mm Width)
Supplier Device Package 8-SOIC
Base Product Number DS1821

Tổng quan

Description

The DS1821S+ is a temperature sensor with digital output, designed for high-precision temperature measurement in various applications such as industrial monitoring, HVAC systems, and consumer electronics. It features a 1-Wire interface, allowing multiple sensors to be connected on the same data line, simplifying wiring and reducing system complexity.
The device offers a wide temperature range, typically from -55°C to +125°C, with a resolution of up to 0.0625°C, making it suitable for precise temperature tracking. It includes programmable alarm settings that can notify systems when temperatures exceed or fall below specified thresholds.
The DS1821S+ is typically powered by a single supply voltage, making it energy-efficient. Its compact design and robust performance make it ideal for integration into both portable and stationary systems. Overall, the DS1821S+ is a versatile and reliable choice for applications requiring accurate and real-time temperature monitoring.

Features

The DS1821S+ is a high-precision digital temperature sensor from Maxim Integrated. Key features include:
1. Temperature Range: -55°C to +125°C with an accuracy of ±0.5°C from -10°C to +85°C.
2. Digital Output: Provides a 12-bit digital output for temperature readings.
3. Interface: Supports a 1-Wire interface for easy integration and communication with microcontrollers.
4. Multiple Devices: Can be connected in a multi-drop configuration, allowing multiple DS1821S+ sensors to operate on a single data line.
5. Power Supply: Operates on a wide voltage range of 3.0V to 5.5V, making it suitable for various applications.
6. Low Power Consumption: Designed for low power applications, making it ideal for battery-operated systems.
7. Alarm Functionality: Features programmable temperature alarms, enabling users to set thresholds for alerting temperature deviations.
These features make the DS1821S+ suitable for applications in HVAC, industrial monitoring, and consumer electronics.

Package

The DS1821S+ is packaged in a 3-lead TO-92 package. This small, cylindrical package is commonly used for temperature sensors and includes leads for easy integration into electronic circuits.

Pinout

The DS1821S+ is a digital thermometer and thermostat with a total of 3 pins. Here are the pin counts and their functions:
1. GND (Pin 1): This pin is connected to ground.
2. DQ (Pin 2): This is the data line used for one-wire communication. It is used for both sending commands to the device and receiving temperature data.
3. VDD (Pin 3): This pin is connected to the power supply, typically +3.0V to +5.5V.
The DS1821S+ provides temperature measurements with a resolution of up to 0.5°C and features programmable alarm settings. It is often used in applications requiring precise temperature monitoring and control.

Manufacturer

The DS1821S+ is manufactured by Texas Instruments (TI), a global technology company headquartered in Dallas, Texas. Founded in 1930, Texas Instruments is well-known for its design and manufacturing of semiconductors and various integrated circuits, which are crucial components in numerous electronic devices. The company has a strong presence in the analog and embedded processing markets, serving customers in a wide range of industries, including automotive, industrial, communications, and consumer electronics. Texas Instruments also produces a variety of products, including microcontrollers, sensors, and power management solutions, making it a key player in the electronics industry.

Application

The DS1821S+ is a digital thermometer and temperature sensor primarily used in applications such as industrial temperature monitoring, HVAC systems, temperature logging in data centers, and automotive climate control. It is also utilized in consumer electronics, medical devices, and environmental monitoring systems for accurate temperature measurement and control.

Equivalent

Equivalent products to the DS1821S+ chip include the DS1820, DS1822, and DS18B20 temperature sensors. These components share similar functionalities, such as digital temperature measurement and 1-Wire interface compatibility. Depending on specific application needs, alternatives like the MCP9808 or LM75A may also be considered, but they use different communication protocols. Always verify pin configurations and features for compatibility.

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