LDS6104NQGI

Overview

The LDS6104NQGI is a capacitive touch sensor controller IC from the Renesas PureTouch family. It features eight dedicated capacitive sensor input channels capable of detecting buttons, sliders, and scroll wheels. The device supports an update rate of 2ms per active sensor and includes built-in support for slider and scroll wheel configurations. It operates on a supply voltage range of 1.65V to 5.5V with configurable hysteresis and debounce settings. Communication interfaces include I2C, SPI, and SMBus options with VDDIO. Four of the sensor pins can be configured as Direct Communication Mode (DCM) outputs to emulate mechanical button operations.

Feature Summary

• Supports up to eight capacitive touch sensor inputs for versatile interface designs
• Integrates hardware acceleration for slider and scroll wheel detection
• Offers multiple serial communication protocols including I2C, SPI, and SMBus
• Provides configurable signal processing parameters such as hysteresis and debounce

Applications

• Consumer electronics requiring capacitive button interfaces
• Appliance control panels with slider or rotary input requirements
• Industrial equipment user interfaces needing robust touch sensing

Procurement Notes

Verify component authenticity through authorized distributors due to end-of-life status. Confirm package integrity and RoHS compliance before integration. Check for available legacy stock or qualified replacement components from the same product family. Ensure design compatibility with existing firmware drivers for the PureTouch architecture.

Selection Notes

Select this model when eight independent touch channels are required within a compact footprint. Consider the 1.65V to 5.5V operating range for flexible power supply designs. Evaluate the availability of DCM outputs if mechanical switch emulation is necessary. Compare against other members of the LDS610x family for channel count and package variations.

Part Context

This component belongs to the Renesas PureTouch LDS6100 series, designed for high-accuracy capacitive touch applications. It succeeds earlier IDT touch sensor technologies under the Renesas Electronics portfolio. The device integrates seamlessly into systems requiring reliable human-machine interaction without complex external circuitry.

Replacement Considerations

The LDS6104NQGI is listed as obsolete. Potential replacements include other variants within the LDS6104 or LDS6107 families, subject to pinout and channel compatibility verification.