MCP42100-I/ST

Product Overview

Category

The MCP42100-I/ST belongs to the category of digital potentiometers.

Use

It is used as a digitally controlled variable resistor in various electronic circuits and systems.

Characteristics

• Digital control interface
• Low power consumption
• Wide operating voltage range
• Non-volatile memory for wiper settings

Package

The MCP42100-I/ST is available in a surface-mount package.

Essence

The essence of MCP42100-I/ST lies in its ability to provide precise digital control over resistance values in electronic circuits.

Packaging/Quantity

The MCP42100-I/ST is typically packaged in reels with a specific quantity per reel.

Specifications

• Resolution: 7-bit
• Interface: SPI
• Operating Voltage Range: 2.7V to 5.5V
• Standby Current: 1 µA (max)
• Temperature Range: -40°C to +125°C
• Wiper Resistance: 75 Ω (typical)

Detailed Pin Configuration

The MCP42100-I/ST features a standard 8-pin configuration: 1. VSS (Ground) 2. Terminal A (Analog Input/Output A) 3. Terminal B (Analog Input/Output B) 4. CS (Chip Select) 5. SCK (Serial Clock) 6. SI (Serial Input) 7. VDD (Power Supply) 8. WP (Write Protect)

Functional Features

• Digital control of resistance value
• Non-volatile memory for wiper position storage
• SPI interface for communication

Advantages

• Precise digital control
• Low power consumption
• Wide operating voltage range
• Non-volatile memory for retaining settings

Disadvantages

• Limited resolution compared to higher-bit digital potentiometers
• May require additional circuitry for certain applications

Working Principles

The MCP42100-I/ST operates by using digital signals from the SPI interface to control the wiper position, effectively changing the resistance between terminals A and B.

Detailed Application Field Plans

The MCP42100-I/ST finds application in various fields including: - Audio equipment for volume control - Instrumentation and measurement systems - Programmable voltage references - Industrial automation and control systems

Detailed and Complete Alternative Models

Some alternative models to MCP42100-I/ST include: - MCP42010: 8-bit resolution digital potentiometer - MCP4261: Dual-channel digital potentiometer with SPI interface - AD8403: 256-position digital potentiometer with non-volatile memory

In conclusion, the MCP42100-I/ST digital potentiometer offers precise digital control over resistance values, making it suitable for a wide range of electronic applications.

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