PureTouch Capacitive Touch Sensor IC
Description
LDS6100 Family
PureTouch®* Capacitive Touch Sensor IC Family
FEATURES
o Up to 20 touch sensor channels o 2ms update rate per active sensor input**
o Direct Communication Mode (DCM) for mechanical button emulation
o Built-in Slider/Scroll Support o Configurable hysteresis and debounce o Touch Preference Modes o Integrated LED drivers for visual feedback
(LDS6120/4/5/8) o Configurable dimming o Built-in flash and pulsate effects o Individual LED configurability o 1.
65-5.
5v supply voltage o Low touch sensor operating power o Full power mode (typ): <125uW*** o Optional low power mode o On-chip automatic calibration algorithm o SPI/I2C/SMBus-compatible serial I/F with VDDIO o GPIO and interrupt output o 28 and 40-pin TQFN packages o 28-pin SSOP also available
APPLICATIONS
o Mobile handsets, personal media pl ayers o Portable navigation devices o Remote controls o Office equipment, multi-function printers o Set top boxes o Home appliances o Brown goods o Industrial controls
DESCRIPTION
The LDS6100 Family of capacitive touch controllers enables streamlining of the human-machine interface through the implementation of touch-based user inputs such as touch buttons, sliders, and scroll wheels.
Employing a finely tuned sigma-delta capacitance-to-digital converter and proprietary noise-filtering algorithms, each device is able to reliably sense small changes in capacitance, allowing touch-based inputs to replace a side variety of mechanical input types.
On-chip automatic calibration accounts for environmental changes such as temperature, humidity, and dust and is executed automatically.
The LDS6100 Family consists of eight products, four (LDS6100/4/7/8) focusing exclusively on touch functionality, with another four (LDS6120/4/6/8) include LED drivers for integrated visual feedback when a touch occurs.
Up to 20 capacitive sensor input pins may be supported, approximately half of which may be optionally configured as output status pins in Direct Communication Mode (DCM) which ...
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