CAT5119TBI-10GT3

Digital Potentiometers Overview

The CAT5119TBI-10GT3 is a single variable resistor digital potentiometer from onsemi, featuring 32 taps and a nominal end-to-end resistance of 10 kΩ. It operates on a single supply voltage ranging from 2.7 V to 5.5 V with an active supply current of 25 µA and standby current as low as 0.3 µA. The device utilizes a 2-wire up/down serial interface for wiper control and includes power-on reset circuitry that defaults the wiper to midscale upon initialization. Packaged in a compact SOT-23-6 format, it provides glitchless switching between resistor taps.

Digital Potentiometers Feature Summary

• Configured as a variable resistor with 32-tap resolution and 10 kΩ nominal resistance
• Ultra-low standby current of 0.3 µA at VDD = +5 V
• Glitchless switching between resistor taps ensures stable operation
• Power-on reset sets wiper position to midscale automatically

Digital Potentiometers Applications

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

Digital Potentiometers Procurement Notes

Verify the specific ordering suffix 'GT3' against the manufacturer's latest documentation to confirm shipping configuration and tape-and-reel specifications. Ensure compatibility with the required operating temperature range of -40°C to +85°C for the intended application environment.

Digital Potentiometers Selection Notes

Select this component when a digitally controlled variable resistor is required rather than a potentiometer configuration. The 10 kΩ value suits moderate impedance applications, while the 2-wire interface minimizes pin count compared to parallel interfaces. Verify that the 32-tap resolution meets the precision requirements of the target circuit.

Digital Potentiometers Part Context

This part belongs to the CAT511x family of 32-tap digital potentiometers manufactured by onsemi. It shares core architectural features with siblings like the CAT5110 and CAT5118 but differs in terminal configuration; specifically, the CAT5119 is designed as a variable resistor where the low terminal connects to the wiper.

Digital Potentiometers Replacement Considerations

Direct functional substitutes within the same package include other CAT5119 variants with different resistance values (e.g., CAT5119TBI-50GT3) or the CAT5124 series. Cross-family replacements require verifying interface compatibility and tap count.