AD5203ARZ100

Product Overview

Category: Integrated Circuit (IC)

Use: Digital Potentiometer

Characteristics: - 256-Position Digital Potentiometer - Nonvolatile Memory for Wiper Position Storage - Low Temperature Coefficient - Wide Power Supply Range: 2.7V to 5.5V - SPI-Compatible Serial Interface - Resistor Network Resolution: 100Ω - Package Type: SOIC (Small Outline Integrated Circuit) - RoHS Compliant

Packaging/Quantity: The AD5203ARZ100 is available in a 16-lead SOIC package. It is typically sold in reels of 2500 units.

Specifications

• Resolution: 8-bit (256 positions)
• Resistance Tolerance: ±20%
• Temperature Coefficient: 35 ppm/°C
• Operating Temperature Range: -40°C to +85°C
• Power Supply Voltage Range: 2.7V to 5.5V
• Digital Interface: SPI (Serial Peripheral Interface)
• Package Type: SOIC-16

Pin Configuration

The AD5203ARZ100 has a total of 16 pins, which are assigned as follows:

1. VSS: Ground
2. H1: Terminal H1 of the resistor network
3. H2: Terminal H2 of the resistor network
4. H3: Terminal H3 of the resistor network
5. H4: Terminal H4 of the resistor network
6. CS: Chip Select (active low)
7. SCLK: Serial Clock Input
8. SDI: Serial Data Input
9. GND: Ground
10. VLOGIC: Logic Supply Voltage
11. WP: Write Protect (active low)
12. NC: No Connection
13. B1: Terminal B1 of the resistor network
14. B2: Terminal B2 of the resistor network
15. B3: Terminal B3 of the resistor network
16. B4: Terminal B4 of the resistor network

Functional Features

• The AD5203ARZ100 is a 256-position digital potentiometer that can be used to digitally control resistance.
• It features nonvolatile memory, allowing it to store the wiper position even when power is removed.
• The device has a wide power supply range, making it suitable for various applications.
• It utilizes an SPI-compatible serial interface for easy communication with microcontrollers or other devices.

Advantages and Disadvantages

Advantages: - High resolution (8-bit) allows for precise control of resistance. - Nonvolatile memory ensures that the wiper position is retained during power cycles. - Wide power supply range provides flexibility in different operating conditions. - SPI interface enables easy integration with other digital systems.

Disadvantages: - Resistance tolerance of ±20% may limit its use in applications requiring high precision. - Limited temperature coefficient may affect performance in extreme temperature environments.

Working Principles

The AD5203ARZ100 functions as a digital potentiometer by using a resistor network and a wiper that moves along the resistive elements. The position of the wiper determines the resistance value between the H terminals and the B terminals. The digital potentiometer can be controlled through the SPI interface, allowing the user to set the desired resistance value digitally.

Detailed Application Field Plans

The AD5203ARZ100 can be used in various applications, including but not limited to: - Audio equipment: Volume control, tone adjustment - Instrumentation: Calibration, signal conditioning - Industrial automation: Process control, motor speed control - Communication systems: Signal attenuation, impedance matching

Alternative Models

Here are some alternative models that offer similar functionality to the AD5203ARZ100: - MCP41010: 8-bit digital potentiometer with SPI interface - MAX5481: 256-tap digital potentiometer with I2C interface - DS1804: Nonvolatile digital potentiometer with 100Ω resolution

These alternative models can be considered based on specific requirements and compatibility with the target system.

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