AD8402ARU100

Product Overview

Category

AD8402ARU100 belongs to the category of digital potentiometers.

Use

It is commonly used as a variable resistor in electronic circuits.

Characteristics

• Digital control interface
• Non-volatile memory for storing settings
• Low power consumption
• Wide operating voltage range
• High resolution and accuracy

Package

AD8402ARU100 comes in a small outline integrated circuit (SOIC) package.

Essence

The essence of AD8402ARU100 lies in its ability to provide a digitally controlled variable resistance, replacing traditional mechanical potentiometers.

Packaging/Quantity

AD8402ARU100 is typically sold in reels containing 250 units per reel.

Specifications

• Resolution: 8 bits
• Number of Channels: 2
• Operating Voltage Range: 2.7V to 5.5V
• Temperature Range: -40°C to +125°C
• Resistance Tolerance: ±20%
• End-to-End Resistance Range: 100Ω

Detailed Pin Configuration

AD8402ARU100 has a total of 16 pins, which are configured as follows:

1. VDD: Power supply voltage
2. GND: Ground reference
3. SDA: Serial data input/output
4. SCL: Serial clock input
5. A0: Address bit 0
6. A1: Address bit 1
7. NC: No connection
8. NC: No connection
9. RDAC2: Terminal 2 of channel 2
10. RDAC2: Terminal 1 of channel 2
11. RDAC1: Terminal 2 of channel 1
12. RDAC1: Terminal 1 of channel 1
13. CS: Chip select input
14. NC: No connection
15. VLOGIC: Logic supply voltage
16. NC: No connection

Functional Features

• Digital control interface allows for easy integration with microcontrollers and digital systems.
• Non-volatile memory ensures that the potentiometer settings are retained even when power is disconnected.
• Low power consumption makes it suitable for battery-powered applications.
• Wide operating voltage range enables compatibility with various power supply levels.
• High resolution and accuracy provide precise control over resistance values.

Advantages and Disadvantages

Advantages

• Easy integration with digital systems
• Retains settings without power
• Suitable for low-power applications
• Compatible with different power supply levels
• Provides high precision and accuracy

Disadvantages

• Limited resistance tolerance of ±20%
• Relatively small end-to-end resistance range of 100Ω

Working Principles

AD8402ARU100 utilizes a combination of digital control signals and internal circuitry to adjust the resistance between its terminals. The digital control interface allows users to set the desired resistance value, which is then stored in non-volatile memory. The potentiometer can be controlled using a microcontroller or other digital devices, providing a convenient and reliable method for adjusting resistance in electronic circuits.

Detailed Application Field Plans

AD8402ARU100 finds applications in various fields, including:

1. Audio Equipment: Used for volume control and tone adjustment in amplifiers, mixers, and audio processors.
2. Industrial Automation: Employed in control systems for precise resistance adjustments in industrial machinery.
3. Test and Measurement Instruments: Integrated into equipment for calibration and signal conditioning purposes.
4. Automotive Electronics: Utilized in automotive systems for sensor calibration and control circuitry.

Detailed and Complete Alternative Models

Some alternative models to AD8402ARU100 include:

1. AD8400ARZ10: 10kΩ, 1-channel digital potentiometer
2. AD8403ARZ50: 50kΩ, 4-channel digital potentiometer
3. MCP4131-103E/P: 10kΩ, single-channel digital potentiometer
4. MAX5486EUD+: 100kΩ, dual-channel digital potentiometer

These alternative models offer similar functionality and can be considered based on specific application requirements.

In conclusion, AD8402ARU100 is a digital potentiometer that provides precise resistance control in electronic circuits. Its digital control interface, non-volatile memory, and low power consumption make it suitable for various applications. While it has some limitations in terms of resistance tolerance and range, there are alternative models available to suit different needs.