AD8402AR1-REEL

Product Overview

Category

AD8402AR1-REEL belongs to the category of electronic components, specifically digital potentiometers.

Use

The AD8402AR1-REEL is used as a digitally controlled variable resistor in various electronic circuits. It provides a convenient way to adjust resistance values digitally, replacing traditional mechanical potentiometers.

Characteristics

• Digital control: The AD8402AR1-REEL can be controlled digitally using a microcontroller or other digital interface.
• Wide resistance range: It offers a wide range of resistance values, allowing for precise adjustment in different applications.
• Low power consumption: The device operates at low power, making it suitable for battery-powered devices.
• High resolution: The AD8402AR1-REEL provides high-resolution adjustment, enabling fine-tuning of resistance values.
• Non-volatile memory: The device retains its settings even when power is removed, ensuring consistent performance.

Package

The AD8402AR1-REEL comes in a small surface-mount package, making it suitable for compact electronic designs.

Essence

The essence of the AD8402AR1-REEL lies in its ability to provide digitally controlled resistance adjustment, offering a more reliable and precise alternative to mechanical potentiometers.

Packaging/Quantity

The AD8402AR1-REEL is typically packaged in reels, containing a specific quantity of devices per reel. The exact quantity may vary depending on the manufacturer's specifications.

Specifications

• Resistance Range: 0Ω to 100kΩ
• Resolution: 256 steps
• Supply Voltage: 2.7V to 5.5V
• Operating Temperature Range: -40°C to +85°C
• Interface: SPI (Serial Peripheral Interface)
• Package Type: SOIC (Small Outline Integrated Circuit)

Detailed Pin Configuration

The AD8402AR1-REEL has a total of 16 pins, which are assigned specific functions. The pin configuration is as follows:

1. VDD: Power supply voltage
2. CS: Chip select input for SPI communication
3. SCLK: Serial clock input for SPI communication
4. SDI: Serial data input for SPI communication
5. SDO: Serial data output for SPI communication
6. GND: Ground connection
7. A1: Address bit 1
8. A0: Address bit 0
9. H/L: High/Low terminal of the potentiometer
10. W: Wiper terminal of the potentiometer
11. B: Terminal connected to one end of the potentiometer
12. RAB: Terminal connected to the other end of the potentiometer
13. NC: No connection
14. NC: No connection
15. NC: No connection
16. NC: No connection

Functional Features

• Digital control: The AD8402AR1-REEL allows for precise digital control of resistance values.
• Non-volatile memory: The device retains its settings even when power is removed, ensuring consistent performance.
• Low power consumption: The AD8402AR1-REEL operates at low power, making it suitable for battery-powered applications.
• High resolution: It provides high-resolution adjustment, enabling fine-tuning of resistance values.

Advantages and Disadvantages

Advantages

• Precise and reliable resistance adjustment
• Compact size for space-constrained designs
• Non-volatile memory ensures consistent performance
• Low power consumption extends battery life
• High resolution allows for fine-tuning

Disadvantages

• Requires digital control interface (SPI)
• Limited resistance range compared to some mechanical potentiometers
• May be more expensive than traditional potentiometers

Working Principles

The AD8402AR1-REEL is based on the principle of a digital potentiometer. It consists of a series of resistive elements connected in a ladder-like configuration. The wiper terminal can be moved digitally to different positions along the ladder, effectively changing the resistance value seen between the high and low terminals.

By controlling the digital inputs, the position of the wiper can be adjusted, resulting in a corresponding change in the overall resistance. This allows for precise and convenient adjustment of resistance values in electronic circuits.

Detailed Application Field Plans

The AD8402AR1-REEL finds applications in various fields where precise resistance adjustment is required. Some potential application areas include:

1. Audio Equipment: The device can be used for volume control or tone adjustment in audio amplifiers or mixers.
2. Industrial Control Systems: It can be employed in industrial control systems for calibration or fine-tuning of sensor readings.
3. Test and Measurement Instruments: The AD8402AR1-REEL can be utilized in test equipment to adjust signal levels or simulate variable resistances.
4. Automotive Electronics: