DS1831S+T&R

Product Overview

• Category: Integrated Circuits
• Use: Temperature Sensor and Real-Time Clock
• Characteristics:
  • Combines temperature sensing and real-time clock functions in a single chip
  • High accuracy and precision
  • Low power consumption
  • Compact package size
• Package: T&R (Tape and Reel)
• Essence: Integration of temperature sensing and real-time clock functions in a single chip
• Packaging/Quantity: Tape and Reel packaging, quantity varies based on customer requirements

Specifications

• Temperature Sensing Range: -55°C to +125°C
• Temperature Resolution: 0.0625°C
• Real-Time Clock Accuracy: ±2 minutes per month
• Supply Voltage: 2.7V to 5.5V
• Interface: I2C (Inter-Integrated Circuit)
• Operating Current: 400µA (typical)

Detailed Pin Configuration

The DS1831S+T&R has the following pin configuration:

1. VCC: Power supply input
2. GND: Ground connection
3. SDA: Serial Data Line for I2C communication
4. SCL: Serial Clock Line for I2C communication
5. INT/SQW: Interrupt output or Square Wave output selection pin
6. RST: Reset pin for the real-time clock function

Functional Features

• Temperature Sensing: The DS1831S+T&R accurately measures temperature within a wide range.
• Real-Time Clock: It provides accurate timekeeping functionality with low power consumption.
• Alarm Function: The integrated alarm feature allows triggering an interrupt or generating a square wave output at a specified time.
• Non-Volatile Memory: The device includes non-volatile memory to store critical information such as time and temperature data.

Advantages and Disadvantages

Advantages: - Integration of temperature sensing and real-time clock functions reduces component count and board space. - High accuracy and precision ensure reliable temperature measurements and timekeeping. - Low power consumption extends battery life in portable applications.

Disadvantages: - Limited temperature sensing range compared to some specialized temperature sensors. - The I2C interface may require additional circuitry for compatibility with certain microcontrollers.

Working Principles

The DS1831S+T&R utilizes a temperature sensor based on the bandgap principle to accurately measure temperature. It combines this functionality with a real-time clock that keeps track of time using an internal oscillator. The device communicates with a host microcontroller through the I2C interface, allowing temperature data retrieval and configuration of various settings.

Detailed Application Field Plans

The DS1831S+T&R finds applications in various fields, including:

1. Industrial Automation: Monitoring and controlling temperature-sensitive processes.
2. HVAC Systems: Temperature regulation in heating, ventilation, and air conditioning systems.
3. Medical Equipment: Ensuring precise temperature control in medical devices.
4. Consumer Electronics: Incorporating accurate timekeeping and temperature sensing in smart home devices.
5. Automotive: Monitoring engine temperature and providing real-time clock functionality in automotive systems.

Detailed and Complete Alternative Models

1. DS3231: Similar to DS1831S+T&R but with improved real-time clock accuracy.
2. TMP102: Dedicated temperature sensor with higher temperature resolution.
3. MCP9808: High-accuracy temperature sensor with extended temperature range.
4. DS1307: Basic real-time clock module without temperature sensing capabilities.

(Note: This is not an exhaustive list; there are several alternative models available in the market.)

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