DS1831C

Product Overview

• Category: Integrated Circuit
• Use: Temperature Sensor and Real-Time Clock
• Characteristics: High accuracy, low power consumption, small package size
• Package: 8-pin SOIC (Small Outline Integrated Circuit)
• Essence: Combines temperature sensing and real-time clock functionality in a single chip
• Packaging/Quantity: Available in reels of 2500 units

Specifications

• Temperature Measurement Range: -55°C to +125°C
• Temperature Resolution: 0.0625°C
• Temperature Accuracy: ±2°C
• Real-Time Clock Accuracy: ±2 minutes per month
• Supply Voltage: 2.7V to 5.5V
• Standby Current: 500nA (typical)
• Operating Current: 200μA (typical)

Pin Configuration

The DS1831C has the following pin configuration:

1. VCC - Power supply input
2. GND - Ground
3. SDA - Serial Data Line for communication
4. SCL - Serial Clock Line for communication
5. RST - Reset input
6. CLKOUT - Clock output
7. SQW/ALM - Square Wave Output/Alarm output
8. NC - No Connection

Functional Features

• Temperature Sensing: The DS1831C accurately measures temperature within a wide range.
• Real-Time Clock: It provides accurate timekeeping with low power consumption.
• Alarm Functionality: The chip can generate an alarm signal based on user-defined conditions.
• Nonvolatile Memory: The DS1831C includes nonvolatile memory to store temperature and time data even when power is lost.

Advantages and Disadvantages

Advantages: - Integration: Combines temperature sensing and real-time clock functions in a single chip, reducing component count and board space. - Accuracy: Provides high accuracy temperature measurements and reliable timekeeping. - Low Power Consumption: Operates with low power consumption, making it suitable for battery-powered applications.

Disadvantages: - Limited Temperature Range: The temperature measurement range is limited to -55°C to +125°C. - Temperature Accuracy: The temperature accuracy of ±2°C may not be sufficient for some precision applications.

Working Principles

The DS1831C utilizes a temperature sensor based on the bandgap principle to accurately measure temperature. It also incorporates a real-time clock circuit that counts seconds, minutes, hours, days, months, and years. The chip communicates with an external microcontroller or host device using the I2C protocol.

Application Field Plans

The DS1831C finds applications in various fields, including:

1. Industrial Automation: Monitoring temperature in manufacturing processes and equipment.
2. HVAC Systems: Controlling heating, ventilation, and air conditioning systems.
3. Medical Devices: Ensuring accurate temperature monitoring in medical equipment.
4. Automotive: Monitoring engine temperature and controlling climate systems.
5. Consumer Electronics: Incorporating temperature sensing and timekeeping functions in devices like smart thermostats and wearables.

Alternative Models

Other alternative models that provide similar functionality to the DS1831C include:

1. DS3231: Real-Time Clock with higher accuracy and additional features.
2. LM75: Digital Temperature Sensor with I2C interface.
3. MCP9808: High-Accuracy Temperature Sensor with I2C interface.

These alternative models can be considered based on specific application requirements and desired features.

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