MCP45HV31-502E/ST

Product Overview

Category

The MCP45HV31-502E/ST belongs to the category of digital potentiometers.

Use

It is primarily used for electronic circuitry and system calibration, as well as for adjusting resistance values in various applications.

Characteristics

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

Package

The MCP45HV31-502E/ST is available in a compact surface-mount package.

Essence

This product serves as a replacement for traditional mechanical potentiometers, offering greater precision and flexibility in resistance adjustment.

Packaging/Quantity

The MCP45HV31-502E/ST is typically packaged in reels or tubes, with a quantity of 2500 units per reel/tube.

Specifications

• Operating Voltage Range: 2.7V to 5.5V
• Resistance Range: 50Ω to 50kΩ
• Resolution: 256 steps
• Temperature Range: -40°C to +125°C
• Interface: SPI (Serial Peripheral Interface)
• Memory Type: Non-volatile EEPROM

Detailed Pin Configuration

The MCP45HV31-502E/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. H/L: Terminal A of the potentiometer
8. W: Wiper terminal of the potentiometer

Functional Features

• Digital control allows precise resistance adjustment
• Non-volatile memory retains resistance settings even when power is disconnected
• SPI interface enables easy integration with microcontrollers and other digital systems
• High resolution provides fine-grained adjustment capabilities
• Wide operating voltage range allows compatibility with various power sources

Advantages and Disadvantages

Advantages

• Greater precision compared to mechanical potentiometers
• Non-volatile memory ensures resistance settings are retained
• Compact package size saves board space
• Low power consumption prolongs battery life
• Easy integration with digital systems through the SPI interface

Disadvantages

• Limited resistance range compared to some other potentiometer models
• Higher cost compared to traditional mechanical potentiometers

Working Principles

The MCP45HV31-502E/ST utilizes a combination of digital control and non-volatile memory to adjust and retain resistance values. The potentiometer's wiper position is controlled digitally through the SPI interface, allowing for precise resistance adjustments. The non-volatile memory ensures that the resistance setting is stored even when power is disconnected.

Detailed Application Field Plans

The MCP45HV31-502E/ST finds applications in various fields, including:

1. Audio Equipment: Precise volume control in amplifiers, mixers, and audio processors.
2. Industrial Automation: Calibration of sensors, actuators, and control systems.
3. Test and Measurement Instruments: Fine-tuning resistance values for accurate measurements.
4. Automotive Electronics: Adjustment of circuit parameters in automotive systems.
5. Consumer Electronics: Control of brightness, contrast, and color settings in displays.

Detailed and Complete Alternative Models

1. MCP401X: Similar digital potentiometer series with lower resolution and different package options.
2. MAX548X: Digital potentiometer series with higher resolution and additional features.
3. AD840X: Digital potentiometer series with extended temperature range and wider resistance range.

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