AD5246BKSZ5-RL7

Digital Potentiometers Overview

The AD5246BKSZ5-RL7 is a 128-position digital potentiometer IC from Analog Devices, featuring a 5 kΩ end-to-end resistance. It operates on a single supply voltage ranging from 2.7 V to 5.5 V with a typical supply current of 0.9 µA at 3.3 V. The device utilizes an I²C-compatible interface for full read/write access to the wiper register. Key electrical characteristics include a nominal resistor tolerance of ±30%, a temperature coefficient of 45 ppm/°C in rheostat mode, and a bandwidth of 1.2 MHz at code 0x40. It is housed in an ultracompact SC-70-6 package.

Digital Potentiometers Feature Summary

• 128-position adjustment with linear taper
• I²C compatible serial interface with full read/write capability
• Single supply operation (2.7 V to 5.5 V) with low power consumption (0.9 µA typ)
• Ultracompact SC-70-6 package (2 mm × 2.1 mm)

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

Digital Potentiometers Procurement Notes

Verify the specific resistance value suffix in the part number, as the AD5246 series includes 5 kΩ, 10 kΩ, 50 kΩ, and 100 kΩ variants. Confirm that the SC-70-6 package option matches the design footprint requirements. Ensure the I²C address configuration aligns with the system bus architecture, noting the fixed 7-bit slave address prefix.

Digital Potentiometers Selection Notes

Select this component when a compact, digitally controlled variable resistor is required for precision adjustments. The 5 kΩ resistance value is suitable for applications requiring moderate impedance levels. Consider the ±30% initial tolerance and 45 ppm/°C temperature coefficient for accuracy requirements. The low supply current makes it appropriate for battery-operated portable devices where power efficiency is critical.

Digital Potentiometers Part Context

The AD5246 belongs to a family of 128-position digital resistors available in multiple resistance values. The BKSZ5 variant specifically denotes the 5 kΩ version in the SC-70-6 package. This model serves as a direct electronic replacement for mechanical potentiometers, offering non-volatile-like behavior through constant bias or external memory storage, though the device itself does not contain internal non-volatile memory.

Digital Potentiometers Replacement Considerations

Direct pin-compatible replacements within the same package include other AD5246 variants such as AD5246BKSZ10-RL7 (10 kΩ), AD5246BKSZ50-RL7 (50 kΩ), and AD5246BKSZ100-RL7 (100 kΩ). When substituting, ensure the new part's end-to-end resistance meets the circuit's impedance requirements and that the I²C communication protocol remains compatible.