MAX5480BCEE+T

Product Overview

• Category: Integrated Circuit (IC)
• Use: Digital Potentiometer
• Characteristics: Low-power, 256-tap, nonvolatile memory, I2C interface
• Package: 16-pin TQFN (Thin Quad Flat No-Lead)
• Essence: Provides a digitally controlled variable resistor for circuit adjustment
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Resolution: 8-bit (256 steps)
• Supply Voltage Range: 2.7V to 5.5V
• Operating Temperature Range: -40°C to +85°C
• Resistance Range: 10kΩ
• End-to-End Resistance Tolerance: ±20%
• Nonvolatile Memory: Stores wiper position during power-off
• I2C Interface: Allows digital control of the potentiometer

Pin Configuration

The MAX5480BCEE+T has a 16-pin TQFN package with the following pin configuration:

1. VDD: Positive supply voltage
2. SDA: Serial data input/output for I2C communication
3. SCL: Serial clock input for I2C communication
4. GND: Ground reference
5. A0: Address bit 0 for device addressing
6. A1: Address bit 1 for device addressing
7. WP: Write protect input for nonvolatile memory
8. NC: No connection
9. B0: Terminal B connection for potentiometer
10. W: Wiper terminal for potentiometer
11. A: Terminal A connection for potentiometer
12. NC: No connection
13. NC: No connection
14. NC: No connection
15. NC: No connection
16. NC: No connection

Functional Features

• Digital control of resistance value through I2C interface
• Nonvolatile memory stores wiper position during power-off
• Low-power consumption for energy-efficient applications
• Wide supply voltage range allows compatibility with various systems
• 256-tap resolution provides fine adjustment granularity

Advantages and Disadvantages

Advantages: - Easy digital control of circuit adjustment - Nonvolatile memory ensures settings are retained during power cycles - Low-power operation prolongs battery life in portable devices - Compact package size saves board space

Disadvantages: - Limited resistance range (10kΩ) - End-to-end resistance tolerance may affect precision in some applications

Working Principles

The MAX5480BCEE+T is a digital potentiometer that replaces traditional mechanical potentiometers. It consists of a resistor network and a wiper terminal controlled digitally via the I2C interface. The wiper position determines the resistance between the A and B terminals, allowing precise circuit adjustment.

During power-off, the nonvolatile memory stores the wiper position, ensuring that the potentiometer retains its previous setting when power is restored. This feature is particularly useful in applications where the resistance value needs to be maintained across power cycles.

Detailed Application Field Plans

The MAX5480BCEE+T finds applications in various fields, including:

1. Audio Systems: Allows volume control and tone adjustment in audio amplifiers and mixers.
2. Industrial Control: Provides adjustable gain or offset in sensor signal conditioning circuits.
3. Test and Measurement Equipment: Enables calibration and fine-tuning of instrument parameters.
4. Consumer Electronics: Offers digital control of brightness, contrast, and color balance in displays.
5. Automotive Electronics: Facilitates adjustment of lighting intensity and motor speed control.

Detailed and Complete Alternative Models

1. MAX5481BCEE+T: Similar to MAX5480BCEE+T but with a different resistance range (50kΩ).
2. MAX5482BCEE+T: Similar to MAX5480BCEE+T but with a different resistance range (100kΩ).
3. MAX5483BCEE+T: Similar to MAX5480BCEE+T but with a different resolution (10-bit, 1024 steps).

These alternative models provide options for different resistance ranges and finer adjustment granularity, catering to specific application requirements.

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