CAT5125TBI-50GT3

Digital Potentiometers Overview

The CAT5125TBI-50GT3 is a single-channel digital potentiometer from onsemi, configured as a variable resistor with 32 taps. It features a 50 kΩ end-to-end resistance and operates on a single supply voltage ranging from 2.7 V to 5.5 V. The device utilizes a 2-wire up/down serial interface for wiper position control and includes power-on reset circuitry that defaults the wiper to midscale upon initialization. Packaged in a space-saving SOT-23-6 format, it offers glitchless switching between resistor taps and maintains an ultra-low standby current of 0.3 µA at 5 V.

Digital Potentiometers Feature Summary

• Single-supply operation (2.7 V to 5.5 V) with 32-tap resolution
• 2-wire Up/Down serial interface for digital control
• Glitchless switching between resistor taps
• Power-on reset sets wiper to midscale

Digital Potentiometers Applications

• LCD screen adjustment
• Volume control
• Mechanical potentiometer replacement
• Gain adjustment
• Line impedance matching

Digital Potentiometers Procurement Notes

Verify component authenticity through authorized distribution channels. Confirm RoHS compliance status and check for specific manufacturing lot codes or date codes relevant to production timelines. Ensure storage conditions adhere to moisture sensitivity level requirements prior to soldering.

Digital Potentiometers Selection Notes

Select this part when a digitally controlled variable resistor configuration is required within a 50 kΩ range. The SOT-23-6 package suits applications with strict space constraints. Verify that the 2-wire interface timing meets system clock speeds and that the operating temperature range covers the intended environmental conditions.

Digital Potentiometers Part Context

This component belongs to the CAT5110/CAT5125 family of 32-tap digital potentiometers. While sharing the same interface and core architecture, the CAT5125 is specifically designed for variable resistor applications, distinguishing it from the CAT5110 which is configured as a standard potentiometer.

Digital Potentiometers Replacement Considerations

Direct replacements include other CAT5125 variants with different resistance values (e.g., CAT5125TBI-10GT3 for 10 kΩ). Cross-vendor equivalents require verification of pinout compatibility, interface protocol support, and electrical parameter alignment.