CAT5259YI-50-T2

Digital Potentiometers Overview

The CAT5259YI-50-T2 is a quad digitally programmable potentiometer (DPP) manufactured by onsemi. It integrates four independent linear taper potentiometers, each featuring 256 resistor taps and an end-to-end resistance of 50 kΩ with a 20% tolerance. The device operates within a supply voltage range of 2.5 V to 6.0 V and draws a typical operating current of 1 mA. Control and memory access are managed via a 2-wire I²C interface. Each potentiometer includes nonvolatile memory capable of storing up to four wiper settings, which are automatically recalled upon power-up. The component is housed in a 24-lead TSSOP package and supports surface-mount installation.

Digital Potentiometers Feature Summary

• Quad configuration with 256 taps per potentiometer
• Nonvolatile memory for automatic wiper setting recall
• I²C serial interface for control and data access
• Low standby current consumption (< 1 µA)

Digital Potentiometers Applications

• Audio volume and tone control circuits
• Programmable gain amplifier biasing
• Sensor calibration and offset adjustment
• Variable reference voltage generation

Digital Potentiometers Procurement Notes

Verify the specific suffix 'T2' against the manufacturer's official datasheet to confirm tape and reel packaging specifications. Confirm RoHS compliance status through the latest product documentation. Check for obsolescence notices or lifecycle changes directly from onsemi channels before finalizing procurement plans.

Digital Potentiometers Selection Notes

Select this component when a quad-channel digital potentiometer with high resolution (256 steps) and nonvolatile storage is required. Ensure the system interface supports I²C communication. Verify that the 50 kΩ resistance value aligns with the target circuit impedance requirements and that the 2.5 V to 6 V supply range matches the system power rails.

Digital Potentiometers Part Context

This part belongs to the CAT5259 family of quad digitally programmable potentiometers. The 'YI' designation indicates the industrial temperature range (-40°C to +85°C) and TSSOP-24 package. The '50' specifies the 50 kΩ resistance value. The 'T2' suffix typically denotes the reel packaging format used for automated assembly processes.

Digital Potentiometers Replacement Considerations

Direct replacements include other CAT5259 variants with different resistance values (e.g., CAT5259YI-100-T2 for 100 kΩ). Cross-family alternatives such as the CAT5251 series offer SPI interfaces instead of I²C, requiring software adaptation. Verify pinout compatibility and electrical parameters before substituting.