MCP4551T-103E/MS

Product Overview

Category

The MCP4551T-103E/MS belongs to the category of digital potentiometers.

Use

It is commonly used in electronic circuits for controlling resistance values digitally.

Characteristics

• Digital control of resistance
• High precision and accuracy
• Low power consumption
• Compact size
• Wide operating voltage range

Package

The MCP4551T-103E/MS is available in a small surface-mount package.

Essence

The essence of this product lies in its ability to provide precise and programmable resistance values in electronic circuits.

Packaging/Quantity

The MCP4551T-103E/MS is typically packaged in reels or tubes, with a quantity of 250 units per reel/tube.

Specifications

• Resistance Range: 0Ω to 10kΩ
• Resolution: 8 bits (256 steps)
• Supply Voltage Range: 2.7V to 5.5V
• Operating Temperature Range: -40°C to +125°C
• Non-Volatile Memory: Yes
• Interface: SPI (Serial Peripheral Interface)

Detailed Pin Configuration

The MCP4551T-103E/MS has the following pin configuration:

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. WP: Write protect input for non-volatile memory
8. H: Terminal A of the potentiometer
9. W: Wiper terminal of the potentiometer
10. L: Terminal B of the potentiometer

Functional Features

• Digital control of resistance value
• Non-volatile memory for storing settings
• SPI interface for easy communication with microcontrollers
• High resolution and accuracy
• Low power consumption

Advantages and Disadvantages

Advantages

• Precise and programmable resistance control
• Compact size allows for space-saving designs
• Wide operating voltage range enables compatibility with various systems
• Non-volatile memory ensures retention of settings even when power is lost

Disadvantages

• Limited resolution compared to higher-bit digital potentiometers
• Requires SPI interface for communication, which may add complexity to the circuit design

Working Principles

The MCP4551T-103E/MS operates by digitally controlling the resistance between terminals A and B using a wiper terminal. The desired resistance value is set through the SPI interface, and the non-volatile memory stores this setting for future use. When the circuit is powered on, the MCP4551T-103E/MS adjusts the resistance according to the stored value, allowing precise control over the circuit parameters.

Detailed Application Field Plans

The MCP4551T-103E/MS finds applications in various fields, including:

1. Audio Equipment: Used for volume control and tone adjustment.
2. Industrial Automation: Provides programmable resistance for calibration and control purposes.
3. Test and Measurement Instruments: Enables precise resistance adjustments for accurate measurements.
4. Automotive Electronics: Used in electronic control units (ECUs) for sensor calibration and signal conditioning.
5. Medical Devices: Allows for programmable resistance in medical equipment for precise control.

Detailed and Complete Alternative Models

1. MCP401X: Similar digital potentiometer series with lower resolution (6 bits).
2. MCP416X: Higher-resolution digital potentiometer series with 10 bits.
3. MAX548X: Alternative digital potentiometer series from Maxim Integrated with similar features and specifications.

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