AD8402ARU10

Basic Information Overview

• Category: Integrated Circuit (IC)
• Use: Digital Potentiometer
• Characteristics: Dual Channel, 256-Position, Nonvolatile Memory
• Package: TSSOP-16
• Essence: Provides digitally controlled resistance adjustment in electronic circuits
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Resolution: 8 bits (256 steps)
• Resistance Range: 0 to 10 kΩ
• Supply Voltage: 2.7V to 5.5V
• Temperature Range: -40°C to +125°C
• Interface: Serial Peripheral Interface (SPI)
• Nonvolatile Memory: Stores wiper position settings

Detailed Pin Configuration

1. VDD: Positive Power Supply
2. CS: Chip Select Input
3. SCLK: Serial Clock Input
4. SDI: Serial Data Input
5. SDO: Serial Data Output
6. GND: Ground
7. W1A: Wiper Terminal A for Channel 1
8. W1B: Wiper Terminal B for Channel 1
9. H1: Terminal A Connection for Channel 1
10. L1: Terminal B Connection for Channel 1
11. VSS: Negative Power Supply
12. NC: No Connection
13. W2A: Wiper Terminal A for Channel 2
14. W2B: Wiper Terminal B for Channel 2
15. H2: Terminal A Connection for Channel 2
16. L2: Terminal B Connection for Channel 2

Functional Features

• Dual-channel digital potentiometer with independent wiper control
• Allows precise resistance adjustment in electronic circuits
• Nonvolatile memory retains wiper positions even when power is disconnected
• SPI interface enables easy digital control and communication
• Wide operating voltage range for compatibility with various systems
• Temperature range suitable for industrial applications

Advantages

• Provides accurate and repeatable resistance adjustment
• Nonvolatile memory ensures settings are retained during power cycles
• Compact TSSOP-16 package saves board space
• SPI interface allows for easy integration into digital systems
• Wide temperature range enables use in harsh environments

Disadvantages

• Limited resolution of 8 bits may not be sufficient for some high-precision applications
• Single-package quantity may not be suitable for small-scale projects

Working Principles

The AD8402ARU10 is a digital potentiometer that replaces traditional mechanical potentiometers. It consists of two independent channels, each with a wiper terminal and two fixed terminals. The resistance between the wiper and fixed terminals can be digitally adjusted using the SPI interface. The nonvolatile memory stores the wiper positions, allowing the device to retain its settings even when power is disconnected.

Detailed Application Field Plans

1. Audio Equipment: The AD8402ARU10 can be used in audio amplifiers and mixers to control volume levels and tone adjustments.
2. Industrial Control Systems: It can be employed in industrial control systems to calibrate sensor outputs or adjust signal levels.
3. Test and Measurement Instruments: The digital potentiometer finds application in test equipment for precise resistance simulation or calibration purposes.
4. Automotive Electronics: It can be utilized in automotive electronics for controlling lighting intensity or adjusting audio settings.

Detailed and Complete Alternative Models

1. AD8400ARZ10: Single-channel version with similar specifications
2. AD8403ARU10: Triple-channel version with similar specifications
3. MCP4131-103E/P: Alternative digital potentiometer from Microchip with comparable features

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