MCP4631T-103E/ST

Product Overview

Category

The MCP4631T-103E/ST belongs to the category of digital potentiometers.

Use

It is primarily used as a variable resistor in electronic circuits, providing a digitally controlled resistance value.

Characteristics

• Digital control interface
• Non-volatile memory for storing settings
• Low power consumption
• Wide operating voltage range
• Small package size

Package

The MCP4631T-103E/ST is available in a small surface-mount package.

Essence

The essence of the MCP4631T-103E/ST lies in its ability to replace traditional mechanical potentiometers with a digitally controlled alternative, offering greater precision and flexibility.

Packaging/Quantity

This product is typically packaged in reels or tubes, with a quantity of 250 units per reel/tube.

Specifications

• Resistance Range: 10 kΩ
• Resolution: 8 bits
• Number of Channels: Single channel
• Interface: SPI (Serial Peripheral Interface)
• Operating Voltage Range: 2.7V to 5.5V
• Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The MCP4631T-103E/ST has the following pin configuration:

1. VDD: Power supply voltage
2. CS: Chip select input
3. SCK: Serial clock input
4. SDI: Serial data input
5. SDO: Serial data output
6. GND: Ground

Functional Features

• Digital control allows precise adjustment of resistance
• Non-volatile memory retains settings even when power is removed
• SPI interface enables easy integration into digital systems
• Low power consumption extends battery life in portable devices

Advantages and Disadvantages

Advantages

• Higher precision compared to mechanical potentiometers
• Digital control allows for automated adjustment in electronic systems
• Non-volatile memory ensures settings are retained during power cycles

Disadvantages

• Limited resolution compared to higher-bit digital potentiometers
• Higher cost compared to traditional mechanical potentiometers

Working Principles

The MCP4631T-103E/ST utilizes a combination of digital control and resistor ladder network to achieve variable resistance. The digital control interface communicates with the internal non-volatile memory, which stores the desired resistance value. The resistance is then adjusted by switching different segments of the resistor ladder network, effectively changing the overall resistance seen at the output.

Detailed Application Field Plans

The MCP4631T-103E/ST finds applications in various fields, including:

1. Audio Equipment: Used for volume control and tone adjustment.
2. Industrial Automation: Provides digitally controlled resistance for precise calibration and control.
3. Test and Measurement Instruments: Enables programmable resistance for testing and calibration purposes.
4. Consumer Electronics: Used in devices such as televisions, gaming consoles, and home appliances for user-controlled adjustments.

Detailed and Complete Alternative Models

1. MCP4131-103E/P: Similar specifications but with a different package type (DIP).
2. MCP4161-103E/SL: Higher resolution (10 bits) version with similar characteristics.
3. MCP4251-103E/MS: Dual-channel digital potentiometer with similar specifications.

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