**AD5252BRUZ100-RL7: A Comprehensive Technical Overview of the Dual 256-Position Digital Potentiometer**

The AD5252BRUZ100-RL7 from Analog Devices represents a significant advancement in digital potentiometer (digipot) technology, offering designers a high-resolution, digitally controlled variable resistor for a wide array of applications. This device integrates two independent 100 kΩ digital potentiometers in a single compact package, providing a reliable and space-efficient solution for circuit adjustment and calibration.

**Core Architecture and Functionality**

At its heart, the AD5252 is a **solid-state, non-volatile memory-based potentiometer**. Each of its two channels provides **256-tap points**, enabling a resolution of 8 bits. The wiper position, which determines the resistance ratio, is set via a standard 2-wire I²C-compatible serial interface, allowing for simple and direct microprocessor control. A key feature is its **non-volatile memory (EEPROM)**, which stores the wiper's last position upon power-down. This ensures the device instantly returns to its predefined setting at power-up, eliminating the need for recalibration and enhancing system reliability.

The device operates over a wide **supply voltage range of 2.7 V to 5.5 V**, making it suitable for both 3.3 V and 5 V systems. The **100 kΩ end-to-end resistance** is offered with a tolerance of ±20%, which is standard for digipots. The wiper resistance is typically 60 Ω, which must be considered in precision applications.

**Key Features and Performance Characteristics**

* **Dual-Channel Integration:** The inclusion of two potentiometers in one 14-lead TSSOP package saves significant board space and simplifies design complexity.

* **Non-Volatile Operation:** The EEPROM wiper storage is critical for applications requiring a specific state upon initialization without a host controller.

* **I²C Interface:** Supports clock speeds up to 400 kHz, facilitating fast and efficient communication with the system controller.

* **Wide Operating Temperature Range:** The device is specified for the **industrial temperature range (-40°C to +85°C)**, ensuring robust performance in demanding environments.

* **Programmable Logic Outputs:** The AD5252 includes two additional digital outputs that can be programmed via the I²C interface, adding extra functionality for system control.

**Applications and Use Cases**

The versatility of the AD5252BRUZ100-RL7 makes it ideal for numerous applications where mechanical potentiometers are unreliable or impractical. Primary uses include:

* **Programmable Voltage Regulation:** Adjusting reference voltages and setting bias points in power supplies and op-amp circuits.

* **Instrumentation and Calibration:** Fine-tuning gain and offset in sensor signal conditioning circuits, test equipment, and industrial control systems.

* **Volume and Gain Control:** Providing mute and digital volume control in audio applications.

* **Automated System Calibration:** Replacing manual trimmers in systems requiring remote or periodic adjustment.

**ICGOO**DFIND

**ICGOODFIND** summarizes the AD5252BRUZ100-RL7 as a **highly integrated and reliable dual-digital potentiometer** that excels in applications demanding non-volatile memory, precise digital control, and robust industrial performance. Its combination of dual channels, compact form factor, and simple interface makes it an superior choice for modern electronic design.

**Keywords:** Digital Potentiometer, Non-Volatile Memory, I²C Interface, Industrial Temperature Range, Programmable Resistance.