MCP4261-103E/ST

Product Overview

Category

The MCP4261-103E/ST belongs to the category of digital potentiometers.

Use

It is primarily used for electronic circuitry and systems where variable resistance is required.

Characteristics

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

Package

The MCP4261-103E/ST comes in a small surface-mount package.

Essence

The essence of the MCP4261-103E/ST lies in its ability to provide precise and programmable resistance values in electronic circuits.

Packaging/Quantity

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

Specifications

• Resolution: 8 bits
• Number of Channels: Dual-channel
• Resistance Range: 0Ω to 10kΩ
• Operating Voltage Range: 2.7V to 5.5V
• Interface: SPI (Serial Peripheral Interface)
• Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The MCP4261-103E/ST has a total of 14 pins. The pin configuration is as follows:

1. VDD - Power supply voltage
2. VSS - Ground
3. CS - Chip select input
4. SCK - Serial clock input
5. SDI - Serial data input
6. SDO - Serial data output
7. WP - Write protect input
8. A - Terminal A of channel 0
9. B - Terminal B of channel 0
10. W - Wiper terminal of channel 0
11. H - Terminal A of channel 1
12. G - Terminal B of channel 1
13. X - Wiper terminal of channel 1
14. VREF - Reference voltage input

Functional Features

• Programmable resistance values
• Non-volatile memory for storing settings
• Ability to control multiple channels independently
• Low power consumption for energy efficiency
• SPI interface for easy integration with microcontrollers

Advantages and Disadvantages

Advantages

• Precise and programmable resistance values
• Compact size for space-constrained applications
• Wide operating voltage range allows for versatile use
• Non-volatile memory ensures settings are retained even after power loss

Disadvantages

• Limited resolution compared to higher-bit digital potentiometers
• Lack of built-in protection features against overvoltage or overcurrent conditions

Working Principles

The MCP4261-103E/ST operates by digitally controlling the resistance between its terminal pins. The desired resistance value is set through the SPI interface, which communicates with an external microcontroller. The non-volatile memory ensures that the programmed resistance values are retained even when power is removed.

Detailed Application Field Plans

The MCP4261-103E/ST finds applications in various fields, including:

1. Audio equipment: Volume control circuits, equalizers, and audio mixers.
2. Industrial automation: Variable resistance control in motor speed controllers, robotic systems, and process control equipment.
3. Automotive electronics: Climate control systems, lighting controls, and dashboard controls.
4. Test and measurement instruments: Calibration circuits, signal generators, and data acquisition systems.
5. Consumer electronics: Remote control devices, gaming consoles, and portable audio players.

Detailed and Complete Alternative Models

1. MCP4131-103E/ST: Single-channel digital potentiometer with similar specifications.
2. MCP4251-103E/ST: Quad-channel digital potentiometer with similar specifications.
3. MAX5481EUD+: Single-channel digital potentiometer with higher resolution.
4. AD5263BRUZ20: Dual-channel digital potentiometer with extended resistance range.

These alternative models offer similar functionality and can be considered based on specific application requirements.

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