X9221AWPZ

Product Overview

• Category: Integrated Circuit (IC)
• Use: Digital Potentiometer
• Characteristics: Non-volatile, 8-bit resolution, I2C interface
• Package: 8-pin PDIP (Plastic Dual In-line Package)
• Essence: X9221AWPZ is a digital potentiometer IC used for electronic circuit control and adjustment. It provides a non-volatile solution for replacing mechanical potentiometers in various applications.
• Packaging/Quantity: The X9221AWPZ is available in a tube packaging with a quantity of 25 units.

Specifications

• Resolution: 8 bits
• Interface: I2C (Inter-Integrated Circuit)
• Supply Voltage: 2.7V to 5.5V
• Operating Temperature Range: -40°C to +85°C
• Resistance Range: 0Ω to 10kΩ
• End-to-End Resistance Tolerance: ±20%
• Wiper Resistance: 75Ω typical
• Non-Volatile Memory: Stores wiper position during power-off

Detailed Pin Configuration

The X9221AWPZ has the following pin configuration:

1. VCC: Supply voltage input
2. SDA: Serial Data Line (I2C bus)
3. SCL: Serial Clock Line (I2C bus)
4. A0: Address bit 0 (for I2C addressing)
5. A1: Address bit 1 (for I2C addressing)
6. WP: Write Protect (optional, for disabling write operations)
7. H: High terminal of resistor element
8. L: Low terminal of resistor element

Functional Features

• Digital Control: Allows precise adjustment of resistance value through digital signals.
• Non-Volatile Memory: Retains wiper position even when power is turned off, ensuring the last set value is maintained upon power-up.
• I2C Interface: Uses the I2C bus protocol for communication with microcontrollers or other devices.
• Wide Supply Voltage Range: Operates from 2.7V to 5.5V, making it compatible with various power sources.
• Resistance Range: Provides a resistance range from 0Ω to 10kΩ, allowing for versatile applications.

Advantages and Disadvantages

Advantages: - Non-volatile memory ensures retention of settings during power cycles. - Digital control allows for precise adjustment and eliminates mechanical wear. - Wide supply voltage range enables compatibility with different systems. - Compact and easy-to-use package.

Disadvantages: - Limited resolution compared to higher-bit digital potentiometers. - End-to-end resistance tolerance may affect precision in some applications.

Working Principles

The X9221AWPZ operates by digitally controlling the resistance between its high (H) and low (L) terminals. The desired resistance value is set using the I2C interface, which sends commands to adjust the wiper position. The non-volatile memory stores the wiper position, ensuring that the resistance value is maintained even when power is turned off. This digital potentiometer can be used as a variable resistor or as a voltage divider in electronic circuits.

Detailed Application Field Plans

The X9221AWPZ finds applications in various fields, including:

1. Audio Equipment: Volume control, tone adjustment, and equalization circuits.
2. Industrial Control Systems: Precision calibration, sensor trimming, and feedback control.
3. Test and Measurement Instruments: Programmable resistance loads, signal conditioning, and calibration.
4. Consumer Electronics: Display brightness control, user interface adjustment, and power management.
5. Automotive Electronics: Climate control, motor speed control, and lighting systems.

Detailed and Complete Alternative Models

1. X9241AWPZ: 10-bit resolution digital potentiometer with I2C interface.
2. X9313WMPZ: Dual digital potentiometer with 8-bit resolution and I2C interface.
3. MCP401X: Microchip Technology's digital potentiometer series with various resolutions and interfaces.

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

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