**AD5248BRMZ100-RL7: A Comprehensive Technical Overview of the 100 kΩ Dual Digital Potentiometer**
The **AD5248BRMZ100-RL7** from Analog Devices is a highly integrated, dual-channel digital potentiometer designed to deliver precision performance in a compact form factor. This device provides a **digitally programmable resistance** solution, replacing traditional mechanical potentiometers in a wide array of applications, from industrial control systems to audio equipment and instrumentation.
Functioning as a **variable resistor** with a nominal end-to-end resistance of 100 kΩ, the AD5248 features two independent potentiometers in a single package. Each potentiometer consists of a fixed resistor ladder with 256 tap points, enabling a resolution of **8-bit (256 positions)**. The wiper position, and therefore the resistance value between the wiper and either end terminal, is set via a standard **I²C-compatible serial interface**, allowing for simple and efficient digital control from a microcontroller or microprocessor.
A key advantage of the AD5248 is its **non-volatile memory (NVM)**. This critical feature allows the device to save the most recent wiper position at power-down and automatically restore it upon the next power-up. This ensures that the system starts in a known, predefined state without requiring a re-write from the host controller, enhancing reliability and simplifying system design.
Housed in a space-saving **10-lead MSOP package**, the AD5248BRMZ100-RL7 is engineered for performance across a wide supply voltage range of 2.7 V to 5.5 V, making it suitable for both 3 V and 5 V systems. It offers excellent temperature stability, with a low temperature coefficient of 35 ppm/°C, ensuring consistent performance even in environments with fluctuating temperatures. Its low power consumption further makes it ideal for battery-powered portable devices.
Typical applications include:
* **Volume control and audio level adjustment** in consumer electronics.
* **Gain and offset calibration** in operational amplifier circuits.
* **Programmable voltage references** in power supplies and data acquisition systems.
* **Sensor trimming and calibration** in industrial environments.
**ICGOOODFIND**: The AD5248BRMZ100-RL7 stands out as a robust and reliable solution for designers seeking to integrate precise, digitally controlled resistance. Its combination of dual channels, non-volatile memory, a simple digital interface, and a small footprint makes it an exceptionally versatile component for modern electronic design, streamlining calibration and control processes.
**Keywords**: **Digital Potentiometer**, **I²C Interface**, **Non-Volatile Memory**, **100 kΩ**, **Programmable Resistor**.
