AD8402ARUZ50

Product Overview

• Category: Integrated Circuit (IC)
• Use: Digital Potentiometer
• Characteristics:
  • Dual-channel, 256-position digital potentiometer
  • Non-volatile memory for storing wiper position
  • Low temperature coefficient
  • Wide operating voltage range
• Package: 24-pin TSSOP (Thin Shrink Small Outline Package)
• Essence: AD8402ARUZ50 is a dual-channel digital potentiometer IC used to digitally control resistance in various electronic circuits.
• Packaging/Quantity: Available in tape and reel packaging with 250 units per reel.

Specifications

• Resolution: 8 bits (256 positions)
• Resistance Range: 0 to 50 kilohms
• Operating Voltage Range: 2.7V to 5.5V
• Temperature Coefficient: 35 ppm/°C
• Interface: Serial Peripheral Interface (SPI)
• Operating Temperature Range: -40°C to +125°C

Pin Configuration

The AD8402ARUZ50 has a total of 24 pins. The pin configuration is as follows:

1. VDD - Positive power supply
2. SDO - Serial Data Output
3. SDI - Serial Data Input
4. SCLK - Serial Clock Input
5. CS - Chip Select Input
6. GND - Ground
7. W1A - Channel A Terminal 1
8. W1B - Channel B Terminal 1
9. W2A - Channel A Terminal 2
10. W2B - Channel B Terminal 2
11. HIZA - High Impedance A
12. HIZB - High Impedance B
13. VLOGIC - Logic Supply Voltage
14. NC - No Connection
15. NC - No Connection
16. NC - No Connection
17. NC - No Connection
18. NC - No Connection
19. NC - No Connection
20. NC - No Connection
21. NC - No Connection
22. NC - No Connection
23. NC - No Connection
24. VSS - Negative power supply

Functional Features

• Dual-channel digital potentiometer with independent control for each channel.
• Non-volatile memory allows storing the wiper position even when power is disconnected.
• SPI interface enables easy digital control and communication with other devices.
• Low temperature coefficient ensures stable performance across a wide temperature range.
• Wide operating voltage range makes it suitable for various applications.

Advantages and Disadvantages

Advantages: - Precise digital control of resistance. - Non-volatile memory for retaining settings. - Wide operating voltage range. - Low temperature coefficient for stable performance.

Disadvantages: - Limited resolution (8 bits). - Higher cost compared to traditional potentiometers.

Working Principles

The AD8402ARUZ50 operates by digitally controlling the resistance between its terminals. It uses a combination of electronic switches and resistive elements to achieve this. The digital control signals received through the SPI interface determine the position of the wiper, which in turn determines the resistance value. The non-volatile memory ensures that the wiper position is retained even when power is disconnected.

Application Field Plans

The AD8402ARUZ50 finds applications in various fields where precise digital control of resistance is required. Some potential application areas include:

1. Audio Equipment: Volume control circuits, equalizers, and audio mixers.
2. Instrumentation: Calibration circuits, signal conditioning, and test equipment.
3. Industrial Control: Motor speed control, lighting control, and process control.
4. Communication Systems: Attenuators, filters, and impedance matching circuits.
5. Automotive Electronics: Climate control systems, power seat adjustment, and audio systems.

Alternative Models

• AD8400ARUZ50: Single-channel digital potentiometer with similar specifications.
• AD8403ARUZ50: Triple-channel digital potentiometer with similar specifications.
• MCP4131-502E/P: Alternative digital potentiometer IC from Microchip Technology.
• MAX5486EUD+: Digital potentiometer IC from Maxim Integrated with higher resolution.

(Note: The above list is not exhaustive and serves as a reference for alternative models.)

This entry provides an overview of the AD8402ARUZ50 digital potentiometer IC, including its basic information, specifications, pin configuration, functional features, advantages and disadvantages, working principles, application field plans, and alternative models.