**AD5247BKSZ10-RL7: A Comprehensive Technical Overview of the Dual 256-Tap Digital Potentiometer**
The **AD5247BKSZ10-RL7** from Analog Devices represents a significant advancement in digital potentiometer (digipot) technology, offering engineers a highly integrated and precise solution for variable resistance control in a compact form factor. This device is a **dual-channel, 256-position digitally controlled potentiometer** that serves as a solid-state replacement for traditional mechanical potentiometers and trim pots. It is designed for a wide array of applications, including audio equipment, instrumentation, programmable power supplies, and industrial control systems.
A core feature of the AD5247BKSZ10-RL7 is its **non-volatile memory**, which ensures that the wiper settings are retained even when power is removed. This capability is critical for applications requiring a specific startup configuration without needing to be reprogrammed at each power cycle. The device operates from a single **2.7 V to 5.5 V supply**, making it compatible with both 3.3 V and 5 V logic systems, a common requirement in modern mixed-signal designs.
Communication with the digipot is achieved via a standard **2-wire I²C-compatible serial interface**, supporting clock speeds of up to 400 kHz. This interface allows for simple and efficient communication with a host microcontroller or processor, enabling dynamic adjustments of the wiper position during operation. The **10 kΩ end-to-end resistance** (as denoted by the '10' in the part number) provides a versatile range for signal conditioning and level-setting applications.
The dual-channel architecture offers independent control of two potentiometers within a single package, significantly saving board space and simplifying design complexity. Each potentiometer features a **wiper resistance of typically 45 Ω**, which remains relatively constant across the entire tap range, ensuring consistent performance. The device is available in a space-saving **10-lead MSOP package**, ideal for high-density PCB layouts.
Performance is further enhanced by its low temperature coefficient and low power consumption. The AD5247BKSZ10-RL7 is specified for operation over the extended industrial temperature range (**-40°C to +105°C**), ensuring reliability in harsh environments. Its robust design makes it suitable for both consumer and industrial applications where precision and durability are paramount.
**ICGOOODFIND**: The AD5247BKSZ10-RL7 stands out as a highly reliable and versatile dual digital potentiometer. Its combination of non-volatile memory, a wide operating voltage, a standard I²C interface, and a compact package makes it an excellent choice for designers seeking precise and programmable resistance control in space-constrained applications.
**Keywords**: Digital Potentiometer, Non-Volatile Memory, I²C Interface, Dual-Channel, Programmable Resistance.
