X9221AUP

Product Overview

• Category: Integrated Circuit
• Use: Digital Potentiometer
• Characteristics: Non-volatile, 256-position, I2C interface
• Package: 8-pin SOIC (Small Outline Integrated Circuit)
• Essence: X9221AUP is a digital potentiometer IC used for electronic circuit control and adjustment. It provides a non-volatile solution with 256 adjustable positions through an I2C interface.
• Packaging/Quantity: The X9221AUP is available in a standard 8-pin SOIC package.

Specifications

• Resolution: 8-bit (256 positions)
• Interface: I2C (Inter-Integrated Circuit)
• Supply Voltage: 2.7V to 5.5V
• Operating Temperature Range: -40°C to +85°C
• Resistance Tolerance: ±20%
• End-to-End Resistance Range: 10kΩ, 50kΩ, 100kΩ

Detailed Pin Configuration

The X9221AUP has the following pin configuration:

| Pin Number | Pin Name | Description | |------------|----------|-------------| | 1 | VCC | Supply Voltage | | 2 | SDA | Serial Data Input/Output | | 3 | SCL | Serial Clock Input | | 4 | A0 | Address Bit 0 | | 5 | A1 | Address Bit 1 | | 6 | WP | Write Protect | | 7 | H | Terminal H | | 8 | L | Terminal L |

Functional Features

• Non-volatile memory: The X9221AUP retains its settings even when power is removed, allowing for consistent performance after power cycles.
• I2C interface: The digital potentiometer can be easily controlled and adjusted using the widely-used I2C communication protocol.
• Wide operating voltage range: The X9221AUP can operate within a wide supply voltage range, making it suitable for various applications.
• Multiple resistance options: With selectable end-to-end resistance values of 10kΩ, 50kΩ, and 100kΩ, the X9221AUP offers flexibility in different circuit designs.

Advantages and Disadvantages

Advantages: - Non-volatile memory ensures consistent performance even after power cycles. - Easy control and adjustment through the I2C interface. - Wide operating voltage range allows for versatile application. - Multiple resistance options provide flexibility in circuit design.

Disadvantages: - Limited resolution compared to higher-bit digital potentiometers. - ±20% resistance tolerance may not be suitable for precision applications.

Working Principles

The X9221AUP is based on the concept of a digital potentiometer. It consists of a series of resistive elements connected in a ladder-like configuration. By adjusting the wiper position digitally, the effective resistance between the wiper terminal and other terminals can be changed. This allows for precise control and adjustment of the resistance value in electronic circuits.

Detailed Application Field Plans

The X9221AUP can be used in various applications, including but not limited to: - Audio equipment: Volume control, tone adjustment - Industrial automation: Process control, calibration - Test and measurement instruments: Signal conditioning, calibration - Consumer electronics: Display brightness control, user interface adjustment

Detailed and Complete Alternative Models

Some alternative models to the X9221AUP include: - MCP401X: Microchip Technology Inc. - AD524X: Analog Devices Inc. - MAX548X: Maxim Integrated

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

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