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Integrated Device Technology Electronic Components Datasheet

LDS6100 Datasheet

PureTouch Capacitive Touch Sensor IC

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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
allows emulation of mechanical buttons for more
seamless integration. On the four LDS6120
offerings, the other half of the sensors not
configurable as DCM outputs may be optionally
configured as LED drivers, enabling integrated visual
feedback for touch applications.
The LDS6100 Family supports a touch sensor supply
voltages from 1.65 to 5.5V. All support SPI, I2C, and
SMBus-compatible serial interfaces and offer both a
General Purpose I/O (GPIO) and VDDIO support,
enabling 1.65V to 5.5V voltage interface support.
Typical touch sensor operating power for the device
is less than 125uW***. and a LED driver supply
voltage from 3.0V to 5.5V. Package offerings include
thin form factor (0.8mm max, 0.75mm nominal) 4mm
x 4mm 28-pin and 5mm x 5mm 40-pin TQFN
packages and a 10.2mm x 5.3mm 28-pin SSOP
package.
* PureTouch is a registred trademark of IDT
** Nominal decimation rate (d=1024), per sensor input
*** 1.8V, excluding VDDIO current, which varies with VDDIO voltage, I/F type, and communication frequency
© 2009 IDT
Characteristics subject to change without notice
1
Doc. No. 6100DS, Rev. 0.1


Integrated Device Technology Electronic Components Datasheet

LDS6100 Datasheet

PureTouch Capacitive Touch Sensor IC

No Preview Available !

LDS6100 Family
TYPICAL APPLICATION CIRCUIT
Figure 1: Application Circuit with I2C I/F


Part Number LDS6100
Description PureTouch Capacitive Touch Sensor IC
Maker IDT
Total Page 30 Pages
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