X9221AYSI

Product Overview

• Category: Integrated Circuit (IC)
• Use: Digital Potentiometer
• Characteristics: Non-volatile, 256-position, I2C interface
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: Provides digital control of resistance in electronic circuits
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Resolution: 8-bit (256 steps)
• Supply Voltage: 2.7V to 5.5V
• Temperature Range: -40°C to +85°C
• Interface: I2C (Inter-Integrated Circuit)
• Wiper Current: 3mA maximum
• End-to-End Resistance: 10kΩ
• Standby Current: 1μA maximum

Detailed Pin Configuration

The X9221AYSI has a total of 8 pins:

1. VCC: Power supply voltage input
2. SDA: Serial Data line for I2C communication
3. SCL: Serial Clock line for I2C communication
4. A0: Address bit selection input
5. A1: Address bit selection input
6. WP: Write Protect input
7. H: Terminal connected to the high end of the resistor element
8. L: Terminal connected to the low end of the resistor element

Functional Features

• Non-volatile memory: Retains wiper position during power-off
• I2C interface: Allows easy digital control of resistance
• Low power consumption: Standby current of only 1μA
• Wide operating voltage range: Suitable for various applications
• Small package size: SOIC package for space-constrained designs

Advantages and Disadvantages

Advantages: - Non-volatile memory ensures settings are retained - Easy digital control through I2C interface - Low power consumption for energy-efficient designs - Wide operating voltage range allows flexibility in applications

Disadvantages: - Limited resolution of 8-bit (256 steps) - End-to-end resistance fixed at 10kΩ

Working Principles

The X9221AYSI is a digital potentiometer that replaces traditional mechanical potentiometers. It consists of a resistor network and a wiper that can be digitally controlled. The wiper position determines the resistance between the H and L terminals. The I2C interface allows the microcontroller to send commands to adjust the wiper position, providing precise control over the resistance.

Detailed Application Field Plans

The X9221AYSI finds applications in various electronic systems, including:

1. Audio Systems: Volume control, tone adjustment
2. Display Devices: Brightness control, contrast adjustment
3. Power Supplies: Voltage regulation, current limiting
4. Industrial Control: Calibration, sensor trimming
5. Automotive Electronics: Climate control, motor speed control

Detailed and Complete Alternative Models

1. X9241AYSI: 10-bit resolution, I2C digital potentiometer
2. X9313WSI: 32-position, SPI interface digital potentiometer
3. MCP4017T-503E/LT: 7-bit resolution, I2C digital potentiometer
4. AD8403ARZ1: Quad-channel, 8-bit resolution, SPI digital potentiometer

These alternative models offer different features and specifications to suit specific application requirements.

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