AD5241BRU100-REEL7

Overview

Product Category: Integrated Circuit (IC)

Use: Digital Potentiometer

Characteristics: - 256-Position Digital Potentiometer - Nonvolatile Memory for Wiper Position Storage - Single Supply Operation: 2.7V to 5.5V - Low Power Consumption: 40µA at 3V - I2C-Compatible Serial Interface - Resistor Network Temperature Coefficient: ±35ppm/°C - Package Type: TSSOP - Essence: Provides a digitally controlled variable resistor for various applications.

Packaging/Quantity: The AD5241BRU100-REEL7 is available in a TSSOP package and is typically sold in reels of 2500 units.

Specifications

• Resolution: 8-bit
• Number of Channels: 1
• Resistance Range: 0Ω to 100kΩ
• End-to-End Resistance Tolerance: ±20%
• Temperature Range: -40°C to +125°C
• Power Supply Voltage Range: 2.7V to 5.5V
• Digital Interface: I2C-compatible

Pin Configuration

The AD5241BRU100-REEL7 has the following pin configuration:

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| | | AD5241BRU100 | |_______________________________________| | | | 1 2 3 4 5 6 | |_______________________________________| | | | VDD SDA SCL GND A0 WP | |_______________________________________| ```

• VDD: Power supply voltage
• SDA: Serial data input/output pin
• SCL: Serial clock input pin
• GND: Ground
• A0: Address select input pin
• WP: Write protect input pin

Functional Features

The AD5241BRU100-REEL7 is a 256-position digital potentiometer with nonvolatile memory for wiper position storage. It operates on a single supply voltage ranging from 2.7V to 5.5V, making it suitable for low-power applications. The device features an I2C-compatible serial interface for easy communication with microcontrollers or other digital devices.

The resistor network of the AD5241BRU100-REEL7 has a temperature coefficient of ±35ppm/°C, ensuring stable performance across varying temperatures. The 8-bit resolution allows for precise control over the resistance value, which can be adjusted from 0Ω to 100kΩ.

Advantages and Disadvantages

Advantages: - Nonvolatile memory for wiper position storage ensures retention of settings during power-off cycles. - Wide power supply voltage range enables compatibility with various systems. - Low power consumption minimizes energy usage. - I2C-compatible interface simplifies integration with digital circuits. - Precise 8-bit resolution provides accurate resistance control.

Disadvantages: - Limited to a single channel, limiting its use in applications requiring multiple independent potentiometers. - End-to-end resistance tolerance of ±20% may not meet the requirements of highly precise applications.

Working Principles

The AD5241BRU100-REEL7 utilizes a digital-to-analog converter (DAC) and a resistor ladder network to create a digitally controlled variable resistor. The DAC converts the digital control signal received through the I2C interface into an analog voltage. This voltage is then applied to the resistor ladder network, which adjusts the effective resistance between the wiper terminal and the end terminals.

By changing the digital control signal, the wiper position can be adjusted, effectively changing the resistance value. The nonvolatile memory ensures that the wiper position is retained even when power is removed, allowing for consistent settings across power cycles.

Detailed Application Field Plans

The AD5241BRU100-REEL7 finds applications in various fields where precise resistance control is required. Some potential application areas include:

1. Audio Equipment: The digital potentiometer can be used to control volume levels or tone adjustments in audio amplifiers, mixers, and equalizers.
2. Industrial Automation: It can be employed in industrial control systems to adjust parameters such as motor speed, temperature, or lighting intensity.
3. Test and Measurement Instruments: The device can be integrated into test equipment to provide programmable resistance for calibration or simulation purposes.
4. Medical Devices: It can be utilized in medical instruments that require adjustable resistance, such as patient monitoring systems or electronic therapy devices.
5. Consumer Electronics: The digital potentiometer can be incorporated into consumer electronics like televisions, gaming consoles, or smart home devices for user-controlled settings.

Alternative Models