AD5248BRMZ100

Product Overview

Category: Integrated Circuit (IC)

Use: Digital Potentiometer

Characteristics: - 256-Position Digital Potentiometer - Nonvolatile Memory for Wiper Position Storage - Low Temperature Coefficient of Resistance - Low Power Consumption - Wide Operating Voltage Range - Small Package Size

Package: 10-Lead MSOP (Mini Small Outline Package)

Essence: The AD5248BRMZ100 is a digital potentiometer IC that provides a variable resistance in electronic circuits. It offers precise control over resistance values and can be used as a replacement for traditional mechanical potentiometers.

Packaging/Quantity: The AD5248BRMZ100 is available in a 10-Lead MSOP package. It is typically sold in reels or tubes, with a quantity of 250 units per reel/tube.

Specifications

• Resolution: 8 bits (256 positions)
• Resistance Tolerance: ±20%
• Temperature Coefficient of Resistance: 35 ppm/°C
• Supply Voltage Range: 2.7V to 5.5V
• Operating Temperature Range: -40°C to +125°C
• Digital Interface: I2C-compatible

Pin Configuration

The AD5248BRMZ100 has the following pin configuration:

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| | --| VDD GND |-- Power Supply Pins --| SDA SCL |-- I2C Communication Pins --| A0 A1 |-- Address Select Pins --| WP H/L |-- Write Protect Pin --| VOUT |-- Output Terminal |___________| ```

Functional Features

• Digital Control: The AD5248BRMZ100 allows for digital control of resistance values, eliminating the need for manual adjustment.
• Nonvolatile Memory: The IC includes nonvolatile memory to store the wiper position, ensuring that the resistance setting is retained even when power is removed.
• Low Power Consumption: The device operates with low power consumption, making it suitable for battery-powered applications.
• Wide Operating Voltage Range: The AD5248BRMZ100 can operate within a wide voltage range, providing flexibility in various circuit designs.

Advantages and Disadvantages

Advantages: - Precise Resistance Control: The digital potentiometer offers precise control over resistance values, allowing for accurate adjustments in electronic circuits. - Compact Size: The MSOP package provides a small footprint, making it suitable for space-constrained applications. - Nonvolatile Memory: The nonvolatile memory feature ensures that the resistance setting is retained, even during power cycles.

Disadvantages: - Limited Resolution: The 8-bit resolution of the AD5248BRMZ100 may not be sufficient for applications requiring very fine adjustments. - Limited Temperature Coefficient Range: The temperature coefficient of resistance is specified at 35 ppm/°C, which may not meet the requirements of certain high-precision applications.

Working Principles

The AD5248BRMZ100 utilizes a combination of resistive elements and CMOS switches to create a digitally controlled variable resistor. The resistance value is adjusted by changing the position of the wiper along the resistive element. This adjustment is achieved through I2C communication, where the desired resistance value is sent digitally to the IC.

Detailed Application Field Plans

The AD5248BRMZ100 can be used in various applications, including: 1. Audio Equipment: Volume control, tone adjustment, and equalization circuits. 2. Instrumentation: Calibration and signal conditioning circuits. 3. Industrial Control Systems: Variable gain amplifiers, motor control, and process control. 4. Communication Systems: Attenuators, filters, and impedance matching circuits. 5. Automotive Electronics: Climate control, lighting control, and sensor calibration.

Detailed and Complete Alternative Models

1. AD5247BRMZ100: Similar to the AD5248BRMZ100, but with 128 positions instead of 256.
2. AD5246BRMZ100: Similar to the AD5248BRMZ100, but with 64 positions instead of 256.
3. AD8403ARZ10: Digital potentiometer with 10-bit resolution and SPI interface.
4. MCP4017T-503E/LT: Digital potentiometer with 7-bit resolution and I2C interface.
5. MAX5481EUD+: Digital potentiometer with 10-bit resolution and I2C interface.

These alternative models offer different resolutions, package sizes, and additional features to suit various application requirements.

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