QT510-ISG

Overview

The QT510-ISG is a rotary capacitive touch slider IC from Microchip Technology, part of the QWheel™ series. It utilizes charge-transfer methods to detect finger position along a resistive sensing element, outputting a 7-bit binary number (0-127) representing angular position. The device operates on a single supply voltage ranging from 2.5V to 5.5V with a typical supply current of 750µA. It features an SPI slave interface for host communication and includes proximity sensing capabilities for wake-up functions. The component is housed in a 14-TSSOP package and is rated for operation within a temperature range of -40°C to +85°C.

Feature Summary

• Rotary capacitive touch sensing using patented charge-transfer technology
• SPI slave-mode interface for host controller communication
• Self-calibration and drift compensation modes
• Proximity sensing output for wake-up functionality

Applications

• Automotive controls
• Shaft encoders
• Appliance controls
• Personal electronics

Procurement Notes

Verify the specific ordering suffix ISG confirms the TSSOP-14 package and the industrial temperature grade (-40°C to +85°C). Confirm RoHS3 compliance status as indicated in official documentation. Check for end-of-life or obsolescence notices from Microchip Technology prior to finalizing procurement plans.

Selection Notes

Select this component when a rotary input interface is required without mechanical moving parts. Ensure the host system supports SPI communication and can manage the self-calibration cycles. Verify that the panel thickness and dielectric constant are compatible with the recommended sample capacitor values to maintain positional accuracy.

Part Context

The QT510 belongs to the QSlide™ and QWheel™ families of capacitive touch controllers by Microchip Technology. These devices replace traditional mechanical rotary knobs with sealed, solid-state interfaces. The ISG suffix specifically denotes the TSSOP-14 package variant suitable for surface-mount assembly in compact electronic designs.

Replacement Considerations

No public confirmed substitute part numbers are available in the provided documentation.