LDS6104NQGI8

Overview

The LDS6104NQGI8 is a capacitive touch sensor controller from the PureTouch family, manufactured by Renesas Electronics. It features eight dedicated capacitive sensor input channels and supports button, slider, scroll wheel, and rotary encoder inputs. The device operates on a supply voltage range of 1.65V to 5.5V with a typical current consumption of 70µA. It offers configurable hysteresis and debounce settings alongside a 2ms update rate per active sensor. Communication interfaces include I2C, SPI, and SMBus with VDDIO support. Four channels can be configured as Direct Communication Mode (DCM) outputs to emulate mechanical buttons. The component is housed in a 28-pin VFQFPN package.

Feature Summary

• Supports multiple touch input types including buttons, sliders, scroll wheels, and rotary encoders
• Provides four optional Direct Communication Mode (DCM) outputs for mechanical button emulation
• Integrates configurable hysteresis and debounce logic for reliable signal processing
• Offers flexible serial communication options via I2C, SPI, or SMBus interfaces

Applications

• Consumer electronics requiring multi-touch interface control
• Home appliance control panels with slider or scroll functionality
• Portable devices utilizing rotary encoder inputs
• Industrial equipment needing robust capacitive sensing solutions

Procurement Notes

Verify component authenticity through authorized distributors due to end-of-life status. Confirm package integrity and RoHS compliance before integration. Check for alternative sourcing channels as standard stock may be limited. Ensure compatibility with existing system voltage levels and communication protocols during procurement planning.

Selection Notes

Select this model when eight independent touch channels are required within a compact footprint. Consider the VFQFPN package for surface-mount applications needing low profile. Evaluate power constraints against the 70µA operating current. Verify that the supported serial interfaces match the host microcontroller capabilities for seamless integration.

Part Context

This component belongs to the Renesas PureTouch LDS610x family, designed for high-accuracy capacitive sensing. It shares architectural similarities with models like the LDS6104PYGI8 and LDS6107 series but differs in channel count and package type. The LDS6104NQGI8 specifically utilizes a 28-pin VFQFPN format, distinguishing it from SSOP variants in the same product line.

Replacement Considerations

The LDS6104PYGI8 serves as a direct pin-compatible alternative using a 28-SSOP package. Both parts share identical electrical characteristics and channel configurations. Designers should verify package dimensions and thermal requirements when substituting between VFQFPN and SSOP formats.