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LDS6100 PDF预览

LDS6100

更新时间: 2024-10-02 00:55:07
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描述
PureTouch Capacitance Touch IC Family with Integrated LED Drivers

LDS6100 数据手册

 浏览型号LDS6100的Datasheet PDF文件第2页浏览型号LDS6100的Datasheet PDF文件第3页 
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  
with optimized, state machine  
optimized for the implementation of touch-based input controls including sliders, scroll wheels and  
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  
ultra-low power consumption  
mechanical buttons, enabling streamlined communication of touch events without the need to query the  
serial interface bus.  
• Low BOM cost and minimized solution  
footprint using bare minimum of  
external components  
When configured for capacitive sensing, the touch inputs are directed through an integrated switch matrix  
to a sigma-delta CDC which senses changes in the external sensor array. When a change in capacitance  
occurs above the user defined threshold, a touch event is recognized and the host processor is notified via  
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.  
• Robust touch performance via  
proprietary noise-filtering algorithms  
• 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  
SPI-compatible, I2C-compatible and SMBus-compatible interfaces, selectable in real-time using the I/F  
select pins. General-purpose input/output (GPIO) and interrupt outputs are also provided for additional  
communication with the host processor.  
Applications  
• Mobile handsets and smartphones  
• Personal media players (MP3/MP4)  
• Gaming devices  
C0/DCM10  
C1/DCM 11  
• Remote controls  
LDS6120  
• Television, audio/video  
Power-On  
Reset Logic  
Calibration  
Engine  
Sigma-Delta  
CDC  
C9/DCM9  
C10/LED0  
• Set-top boxes, multi-function printers,  
enterprise telephony  
C19/LED9  
• White goods  
D
D
LED Driver  
Current Sources  
• Industrial and medical devices  
Calibration  
RAM  
VDD2  
VSS2  
RESETB  
TEST  
Control and  
Data Registers  
VDD1  
VSS1  
LDO  
LDOEN  
VDDIO  
I/F_SEL0  
I/F_SEL1  
Serial Interface and  
Control Logic  
Excitation  
Source  
SHIELD  
Interrupt and GPIO Logic  
SD0/ SDI/ SCLK/ CSB/  
GPIO  
INTB  
SDA  
A1  
SCL  
A0  
Figure 1. LDS6120 block diagram  
IDT® LDS6100-6120 PURETOUCH® CAPACITANCE TOUCH FAMILY FLYER  
1

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