MCP4351-103E/ST

Product Overview

Category

The MCP4351-103E/ST belongs to the category of digital potentiometers.

Use

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

Characteristics

• Digital control interface
• Wide resistance range
• High resolution
• Low power consumption
• Compact package size

Package

The MCP4351-103E/ST is available in a small surface-mount package.

Essence

This digital potentiometer offers a convenient and precise method of adjusting resistance in electronic circuits.

Packaging/Quantity

The MCP4351-103E/ST is typically packaged in reels or tubes, with a quantity of 2500 units per reel/tube.

Specifications

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

Detailed Pin Configuration

The MCP4351-103E/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
7. A - Terminal A of the potentiometer
8. W - Wiper terminal of the potentiometer
9. B - Terminal B of the potentiometer

Functional Features

• Digital control allows precise adjustment of resistance.
• SPI interface enables easy integration into microcontroller-based systems.
• Non-volatile memory retains settings even when power is disconnected.
• Low power consumption makes it suitable for battery-powered applications.
• High resolution provides fine-grained control over resistance.

Advantages and Disadvantages

Advantages

• Precise resistance adjustment
• Compact size
• Low power consumption
• Non-volatile memory

Disadvantages

• Limited resistance range compared to some other potentiometers
• Requires a microcontroller or SPI interface for control

Working Principles

The MCP4351-103E/ST operates by digitally controlling the position of the wiper terminal within the potentiometer. This changes the effective resistance between terminals A and B, allowing precise adjustment of resistance in the circuit.

Detailed Application Field Plans

The MCP4351-103E/ST finds applications in various fields, including:

1. Audio equipment: Digital volume control in amplifiers and audio mixers.
2. Industrial automation: Precise resistance adjustment in control systems.
3. Test and measurement: Calibration and fine-tuning of test equipment.
4. Consumer electronics: Control of brightness, contrast, or color balance in displays.
5. Automotive electronics: Adjustment of sensor calibration or control parameters.

Detailed and Complete Alternative Models

1. MCP4131-103E/ST: Similar specifications with a different package size.
2. MCP4161-103E/ST: Higher resolution (10 bits) with similar characteristics.
3. MCP4251-103E/ST: Dual-channel digital potentiometer with the same resistance range.

These alternative models offer similar functionality and can be considered as substitutes for the MCP4351-103E/ST.

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