MCP4251T-104E/ST

Product Overview

Category

The MCP4251T-104E/ST belongs to the category of digital potentiometers.

Use

It is commonly used in electronic circuits for controlling resistance and adjusting signal levels.

Characteristics

• Digital control interface
• Non-volatile memory
• Low power consumption
• Wide operating voltage range
• High resolution

Package

The MCP4251T-104E/ST comes in a small outline transistor (SOT) package.

Essence

This digital potentiometer provides a compact and versatile solution for circuit designers, allowing precise control over resistance values.

Packaging/Quantity

The MCP4251T-104E/ST is typically packaged in reels and available in quantities of 2500 units per reel.

Specifications

• Resolution: 10-bit
• Number of Channels: 2
• Operating Voltage Range: 2.7V to 5.5V
• Temperature Range: -40°C to +125°C
• End-to-End Resistance Range: 100Ω to 10kΩ
• Interface: SPI (Serial Peripheral Interface)
• Memory Type: Non-volatile EEPROM

Detailed Pin Configuration

The MCP4251T-104E/ST has a total of 8 pins:

1. VDD: Power supply voltage input
2. VSS: Ground reference
3. CS: Chip select input for SPI communication
4. SCK: Serial clock input for SPI communication
5. SDI: Serial data input for SPI communication
6. SDO: Serial data output for SPI communication
7. A: Terminal A of the potentiometer
8. B: Terminal B of the potentiometer

Functional Features

• Digital control allows for precise adjustment of resistance values.
• Non-volatile memory ensures that the resistance settings are retained even when power is removed.
• SPI interface enables easy integration with microcontrollers and other digital devices.
• Wide operating voltage range allows for flexibility in various applications.
• Low power consumption makes it suitable for battery-powered devices.

Advantages and Disadvantages

Advantages

• Precise resistance control
• Non-volatile memory for retaining settings
• Versatile interface for easy integration
• Wide operating voltage range
• Low power consumption

Disadvantages

• Limited resolution compared to higher-bit digital potentiometers
• Restricted end-to-end resistance range

Working Principles

The MCP4251T-104E/ST operates by using a combination of resistive elements and electronic switches. The digital control interface allows the user to send commands to adjust the resistance value. These commands are stored in non-volatile memory, ensuring that the resistance setting is maintained even after power cycles.

Detailed Application Field Plans

The MCP4251T-104E/ST finds applications in various fields, including:

1. Audio Equipment: Used for volume control and tone adjustment in amplifiers and audio mixers.
2. Industrial Automation: Employed in control systems for precise resistance adjustments in motor speed control, temperature control, and light intensity control.
3. Test and Measurement Instruments: Integrated into equipment for calibration and signal conditioning purposes.
4. Consumer Electronics: Utilized in devices such as televisions, gaming consoles, and home appliances for user-controlled adjustments.

Detailed and Complete Alternative Models

1. MCP4131: 8-bit digital potentiometer with similar features but lower resolution.
2. MCP4261: 10-bit digital potentiometer with additional features like an I2C interface and more channels.
3. MCP4017: 7-bit digital potentiometer with a smaller package size and lower cost.

These alternative models provide options with varying specifications and capabilities, allowing designers to choose the most suitable digital potentiometer for their specific application.

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