AD8403AR100

Basic Information Overview

• Category: Integrated Circuit (IC)
• Use: Digital Potentiometer
• Characteristics:
  • Low power consumption
  • Wide operating voltage range
  • High resolution and accuracy
  • Non-volatile memory
• Package: 24-pin SOIC (Small Outline Integrated Circuit)
• Essence: AD8403AR100 is a digital potentiometer IC used for electronic circuit control applications.
• Packaging/Quantity: Available in tape and reel packaging, with 250 units per reel.

Specifications

• Resolution: 256 steps
• Resistance Range: 0 to 100 kΩ
• Operating Voltage Range: 2.7V to 5.5V
• Temperature Range: -40°C to +85°C
• Interface: Serial Peripheral Interface (SPI)

Detailed Pin Configuration

The AD8403AR100 has a total of 24 pins, which are as follows:

1. VDD: Positive power supply
2. VSS: Ground
3. SDO: Serial Data Output
4. SDI: Serial Data Input
5. SCLK: Serial Clock Input
6. CS: Chip Select Input
7. RS: Reset Input
8. RH1: Terminal H1 of Rheostat
9. RL1: Terminal L1 of Rheostat
10. RH2: Terminal H2 of Rheostat
11. RL2: Terminal L2 of Rheostat
12. RH3: Terminal H3 of Rheostat
13. RL3: Terminal L3 of Rheostat
14. RH4: Terminal H4 of Rheostat
15. RL4: Terminal L4 of Rheostat
16. RH5: Terminal H5 of Rheostat
17. RL5: Terminal L5 of Rheostat
18. RH6: Terminal H6 of Rheostat
19. RL6: Terminal L6 of Rheostat
20. RH7: Terminal H7 of Rheostat
21. RL7: Terminal L7 of Rheostat
22. RH8: Terminal H8 of Rheostat
23. RL8: Terminal L8 of Rheostat
24. VLOGIC: Logic power supply

Functional Features

• Digital control of resistance value
• Non-volatile memory for storing settings
• Low power consumption in standby mode
• Wide operating voltage range allows for versatile applications
• High resolution and accuracy for precise circuit control

Advantages and Disadvantages

Advantages

• Easy digital control of resistance
• Non-volatile memory ensures settings are retained even when power is lost
• Wide operating voltage range allows for compatibility with various systems
• High resolution and accuracy provide precise circuit control

Disadvantages

• Limited resistance range (0 to 100 kΩ)
• Requires a serial interface for control

Working Principles

The AD8403AR100 is based on the principle of a digital potentiometer. It consists of a series of resistive elements connected between terminals H1 to H8 and L1 to L8. The resistance between each terminal pair can be digitally controlled using the serial interface.

When a specific resistance value is set, the digital potentiometer adjusts the resistance by selectively connecting the appropriate resistive elements. The non-volatile memory ensures that the resistance setting is retained even when power is lost.

Detailed Application Field Plans

The AD8403AR100 is widely used in various electronic circuit control applications, including: - Audio equipment: Volume control, tone adjustment - Industrial automation: Process control, motor speed control - Test and measurement instruments: Calibration, signal conditioning - Communication systems: Signal amplification, impedance matching

Detailed and Complete Alternative Models

• AD8400: 256-step digital potentiometer with a resistance range of 0 to 10 kΩ
• AD8401: 256-step digital potentiometer with a resistance range of 0 to 50 kΩ
• AD8402: 256-step digital potentiometer with a resistance range of 0 to 200 kΩ
• AD8404: 256-step quad-channel digital potentiometer with a resistance range of 0 to 100 kΩ per channel

These alternative models provide similar functionality but with different resistance ranges to suit specific application requirements.

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