AD5246BKSZ50-RL7

Digital Potentiometers Overview

The AD5246BKSZ50-RL7 is a single-channel, 128-position digital potentiometer manufactured by Analog Devices Inc. It features a nominal end-to-end resistance of 50 kΩ with a tolerance of ±20% at 25°C and a temperature coefficient of 45 ppm/°C. The device operates on a single supply voltage ranging from 2.7 V to 5.5 V, consuming a typical supply current of 0.9 µA at 3.3 V. It utilizes an I²C-compatible interface for full read/write access to the wiper register. The component is housed in an ultracompact SC-70-6 package (2 mm × 2.1 mm) and supports an operating temperature range from –40°C to +125°C.

Digital Potentiometers Feature Summary

• 128-position adjustment with linear taper and full read/write capability via I²C interface
• Nominal resistance of 50 kΩ with ±20% tolerance and 45 ppm/°C temperature coefficient
• Low power consumption: 0.9 µA typical at 3.3 V; 3 µA max at 5.5 V
• Ultracompact SC-70-6 package (2 mm × 2.1 mm) suitable for space-constrained designs

Digital Potentiometers Applications

• Mechanical potentiometer replacement in new designs
• Transducer adjustment for pressure, temperature, position, chemical, and optical sensors
• RF amplifier biasing
• Gain control and offset adjustment circuits

Digital Potentiometers Procurement Notes

Verify the specific resistance value suffix (50 for 50 kΩ) and packaging option (RL7 for reel) against the official Analog Devices ordering guide. Confirm RoHS compliance status as indicated by the 'Z' suffix. Ensure compatibility with the target I²C bus voltage levels and check for any regional distribution restrictions or lead time variations directly with authorized suppliers.

Digital Potentiometers Selection Notes

Select this component when a compact, low-power digital solution is required for 50 kΩ variable resistance applications. The 128-position resolution provides sufficient granularity for many adjustment tasks. Consider the volatile memory nature of the wiper setting; if non-volatile retention is critical without external biasing, alternative models like the AD5247 should be evaluated. Ensure the system power-up sequence applies VDD before terminal voltages to prevent forward biasing internal ESD diodes.

Digital Potentiometers Part Context

This part belongs to the AD5246 family of 128-position I²C-compatible digital resistors. It shares the same pinout and interface protocol with other variants in the series, such as the AD5246BKSZ5-RL7 (5 kΩ), AD5246BKSZ10-RL7 (10 kΩ), and AD5246BKSZ100-RL7 (100 kΩ). The primary differentiator among these parts is the nominal end-to-end resistance value, which determines the specific application suitability regarding current handling and impedance matching.

Digital Potentiometers Replacement Considerations

Direct functional replacements within the same package and interface include other AD5246 variants with different resistance values (e.g., AD5246BKSZ10-RL7). For non-volatile requirements, the AD5247 series offers similar form factors but includes EEPROM storage. Verify that any substitute maintains the 50 kΩ nominal resistance and SC-70-6 footprint to ensure mechanical and electrical compatibility.