CAT524LI

Digital Potentiometers Overview

The CAT524LI is a quad, 8-bit digitally programmable potentiometer (DPP) from onsemi. It features four independent wipers with non-volatile NVRAM memory for setting retention. The device utilizes a Microwire serial interface for control and data transfer. It operates on a single supply voltage ranging from 2.7V to 5.5V. Each potentiometer offers 256 taps for resolution. The component includes buffered wiper outputs and common reference inputs. It provides 1 LSB accuracy and supports read-back of settings without affecting the output state.

Digital Potentiometers Feature Summary

• Quad configuration with four independently addressable 8-bit digitally programmable potentiometers
• Non-volatile NVRAM memory ensures wiper settings are retained without power
• Microwire-like serial interface allows for simple communication and control
• Buffered wiper outputs provide stable signal driving capability

Digital Potentiometers Applications

• Automated product calibration in high-volume production lines
• Remote control adjustment of equipment in inaccessible locations
• Offset, gain, and zero adjustments in self-calibrating systems
• Tamper-proof calibration applications requiring secure settings

Digital Potentiometers Procurement Notes

Verify current availability status as this component may be subject to end-of-life restrictions or discontinuation by the manufacturer. Confirm package type compatibility during integration planning. Ensure interface protocol matches existing system design requirements before procurement. Check for alternative qualified sources if original supply is limited.

Digital Potentiometers Selection Notes

Select this component when multiple independent programmable resistors are required in a compact form factor. The non-volatile memory feature eliminates the need for external storage devices for setting retention. Consider the Microwire interface compatibility with the host controller. Evaluate the 2.7V to 5.5V operating range against system power constraints.

Digital Potentiometers Part Context

This part belongs to the CAT524 family of digitally programmable potentiometers. It is designed for applications requiring precise resistance adjustment controlled digitally. The quad configuration allows for complex circuit tuning within a single package. It serves as a replacement for traditional manual potentiometers in automated environments.

Digital Potentiometers Replacement Considerations

CAT524I: Same functional specifications but different package option. Verify pinout compatibility before substitution. Ensure voltage and interface parameters match the target application requirements.