CAT5118TBI-50GT3

Digital Potentiometers Overview

The CAT5118TBI-50GT3 is a single-channel digital potentiometer IC from the onsemi MiniPot family. It features a 50 kOhm resistance value with a linear taper and 32 tap positions for precise adjustment. The device utilizes a volatile arc brush memory and communicates via a 2-wire serial interface. Operating within a supply voltage range of 2.7 V to 5.5 V, it draws a typical current of 25 uA. The component is housed in a compact SOT-23-5 package and supports an operating temperature range from -40°C to +85°C.

Digital Potentiometers Feature Summary

• Single digital potentiometer with 50 kOhm nominal resistance and linear taper
• 32-tap resolution controlled by a 2-wire serial up/down interface
• Low power consumption with 25 uA operating current at 2.7 V to 5.5 V
• Volatile wiper position storage requiring initialization upon power-up

Digital Potentiometers Applications

• Volume control in audio signal paths
• Gain adjustment in sensor conditioning circuits
• Bias voltage setting in analog front-ends
• LED brightness dimming control

Digital Potentiometers Procurement Notes

Verify the specific suffix GT3 against official datasheets to confirm the reel packaging quantity and tape specifications. Confirm RoHS compliance status through the manufacturer's latest documentation. Check for end-of-life notifications or obsolescence warnings prior to procurement planning.

Digital Potentiometers Selection Notes

Select this component when a single-channel variable resistor with 32 discrete steps is required. Ensure the application can tolerate volatile memory behavior, as the wiper position resets after power loss. Verify that the 50 kOhm resistance value fits the circuit impedance requirements and that the SOT-23-5 package footprint matches the PCB layout.

Digital Potentiometers Part Context

This part belongs to the CAT5118 series of 32-tap digital potentiometers. Variants within the series differ primarily in resistance values (10 kOhm, 50 kOhm, 100 kOhm) and package types. The TBI suffix typically denotes the SOT-23-5 package configuration.

Digital Potentiometers Replacement Considerations

Cross-reference with other CAT5118 variants such as CAT5118TBI-10GT3 or CAT5118TBI-100GT3 if different resistance values are acceptable. Verify pinout compatibility before substituting with devices from other manufacturers offering similar 2-wire interface digital potentiometers.