Switch Matrix semiconductor solutions LDS6100/6120 Touch Family PureTouch Capacitance Touch IC Family with Integrated LED Drivers The IDT LDS6100/6120 family of PureTouch controllers empower system designers to create streamlined, attractive and reliable product designs with capacitive touch controls. Integrated LED drivers allow visual feedback to be implemented when a touch occurs, without the need for host intervention. Description Benefits The LDS6100/6120 family of capacitance touch controllers from Integrated Device Technoogy is Ease-of-use and flexible configurability optimized for the implementation of touch-based input controls including sliders, scroll wheels and with optimized, state machine buttons. A low power programmable capacitance-to-digital converter (CDC) supports up to 20 sensor architecture inputs, 10 of which may be configured as direct communication mode (DCM) outputs that emulate Longer battery life enabled with mechanical buttons, enabling streamlined communication of touch events without the need to query the ultra-low power consumption serial interface bus. Low BOM cost and minimized solution footprint using bare minimum of When configured for capacitive sensing, the touch inputs are directed through an integrated switch matrix external components to a sigma-delta CDC which senses changes in the external sensor array. When a change in capacitance Robust touch performance via occurs above the user defined threshold, a touch event is recognized and the host processor is notified via proprietary noise-filtering algorithms an interrupt pin or DCM output. On the LDS6120 products, a variety of built-in LED lighting effects may be automatically initiated by a touch event with no processor intervention required. Customizable visual feedback effects with integrated LED drivers (LDS6120) On-chip calibration logic continuously monitors the environment and automatically adjusts touch sensitivity to insure robust performance. Proprietary noise-filtering algorithms may also be activated to prevent false sensor activation in noisy system environments. The LDS6100/6120 family is offered with 2 SPI-compatible, I C-compatible and SMBus-compatible interfaces, selectable in real-time using the I/F Applications select pins. General-purpose input/output (GPIO) and interrupt outputs are also provided for additional Mobile handsets and smartphones communication with the host processor. Personal media players (MP3/MP4) Gaming devices C0/DCM10 Remote controls LDS6120 C1/DCM 11 Television, audio/video Power-On Calibration Sigma-Delta C9/DCM9 Reset Logic Engine CDC Set-top boxes, multi-function printers, CDC C10/LED0 enterprise telephony C19/LED9 White goods LED0- LED9 LED Driver Industrial and medical devices Calibration Current Sources VDD2 RAM VSS2 RESETB TEST Control and VDD1 Data Registers VSS1 LDOEN LDO VDDIO Serial Interface and Excitation SHIELD I/F SEL0 Interrupt and GPIO Logic Control Logic Source I/F SEL1 SD0/ SDI/ SCLK/ CSB/ GPIO INTB SDA A1 SCL A0 Figure 1. LDS6120 block diagram IDT LDS6100-6120 PURETOUCH CAPACITANCE TOUCH FAMILY FLYER 1Ideal Solution for Portable and Green Applications The LDS6100/6120 is optimized for ultra-low power consumption. In full power mode, sensor conversion and calibration occur continuously, minimizing the time between touch event and touch detection. With its ultra-low touch sensor current consumption of <70 A (typical at 1.8V), the LDS6100 products may be operated continuously in full power mode, eliminating the need for introduced latencies that can cause noticeable delays and degrade the user experience. Where power consumption is of the utmost importance, low power modes with configurable latencies may be utilized to further reduce current below 25 A (100ms sleep cycle). The LDS6100/6120 family is optimized for a minimized solution footprint, with the functionality of multiple components consolidated into a single device and a bare minimum of required external passive components. A variety of package options are available including a 4mm x 4mm 28 lead TQFN package, a 5mm x 5mm 40 lead TQFN package (both with 0.75mm package thickness), or a 5.3mm x 10.2mm SSOP package for applications requiring a wider lead pitch. *For direct application of 1.8V voltage. For voltages higher than 1.8V, apply voltage to VDDIO and tie VDD1 to ground though C2. Figure 2. LDS6120 application diagram (typical) LDS 6100 / 6120 Features Versatile, accurate CDC Up to 20 capacitance sensor input channels Configurable hysteresis and debounce Ultra-low touch sensor power Full power operating mode (typical): <125 W (VDD1=1.8V) consumption Low power operating mode (typical): <50 W (VDD1=1.8V, 100ms sleep cycle) Shutdown mode (typical): <1 W (VDD1=1.8V) Integrated, automatic calibration Auto environmental compensation algorithms Integrated noise immunity algorithms for high-EMI applications Integrated touch preference modes Strongest single touch / two touches Unrestricted (all) touches Built-in slider/scroll support Location, scroll direction, and 2x interpolation supported natively IDT LDS6100-6120 PURETOUCH CAPACITANCE TOUCH FAMILY FLYER 2