LDS6000NQGI8 [IDT]

Micro Peripheral IC;


型号：	LDS6000NQGI8
厂家：	INTEGRATED DEVICE TECHNOLOGY
描述：	Micro Peripheral IC
文件：	总2页 (文件大小：309K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

semiconductor solutions

LDS6000

PureTouch™ Capacitance Touch IC

The LDS6000 PureTouch™ controller empowers system designers to create streamlined, attractive,

and reliable product designs, enabling the replacement of mechanical controls with capacitive touch

buttons, sliders, and scroll wheels.

Description

LDS6000 Features

The LDS6000 is a programmable capacitance-to-digital converter (CDC) designed for use with capacitive

sensor arrays implementing touch-based input controls including sliders, scroll wheels, and buttons.

Featuring 15 sensor inputs, the LDS6000 provides the ﬂexibility to implement multiple touch inputs using

a single controller.

Versatile, accurate capacitance-

to-digital converter (CDC)

•ꢀ 500ꢀkHzꢀsigma-deltaꢀCDC

•ꢀ 15ꢀcapacitanceꢀsensorꢀinputꢀchannels

•ꢀ 2ꢀmsꢀupdateꢀrateꢀperꢀactiveꢀsensor

The capacitive sensor inputs are directed through an integrated switch matrix to a 500 kHz sigma-delta

CDC which senses changes in the external sensor array. When a sufﬁciently large change in capacitance

occurs, a sensor activation is registered and the host processor is notiﬁed.

Integrated, automatic

calibration algorithms

•ꢀ Environmentalꢀcompensation

On-chip calibration logic continuously monitors the environment and automatically adjusts on-and-off

threshold levels to prevent false sensor activation. The LDS6000 is offered with both SPI-compatible and

I²C-compatible interfaces (active interface selected by I/F select pin) and features a general-purpose input/

output (GPIO) and interrupt output for additional communication with the host processor.

•ꢀ On-chipꢀRAMꢀtoꢀstoreꢀcalibrationꢀdata

Integrated touch preference modes

•ꢀ Strongestꢀsingleꢀtouch

•ꢀ Strongestꢀtwoꢀtouches

•ꢀ Unrestrictedꢀ(all)ꢀtouches

LDS6000

Ultra-low touch sensor

power consumption*

•ꢀ Operatingꢀmodeꢀ(typical):ꢀꢀ

<150 uW (VDD1=1.8V)

Power-On

Reset Logic

Calibration

Engine

Sigma-Delta

CDC

C14

•ꢀ Shutdownꢀmodeꢀ(typical):ꢀꢀ

VDD1

<1 uW (VDD1=1.8V)

Calibration

RAM

VSS1

RESETB

TEST

Flexible interface options

•ꢀ SPI-compatibleꢀserialꢀI/F

•ꢀ I²C-compatible serial I/F

Control and

Data Registers

•ꢀ SeparateꢀV_DDIOlevel for serial interface

•ꢀ GPIOꢀandꢀInterruptꢀOutput

* ꢂxcludes I/F and voltage dependent V_DDIOcurrent

500 kHz

Excitation

Source

SHIELD

VDDIO

I/F SEL

Serial Interface and

Control Logic

Interrupt and GPIO Logic

SD0/ SDI/ SCLK/ CSB/

SCL

GPIO

INTB

SDA

Figure 1. LDS6000 block diagram

IDT^®LDS6000 PꢀꢁꢂTOꢀCH™ CꢃPꢃCITꢃꢄCꢂ TOꢀCH IC

Ideal solution for portable applications

Flexible package options:

•ꢀ 28ꢀpinꢀ4mmꢀxꢀ4mmꢀQFN,ꢀ

0.8mm max height

The LDS6000 is optimized for minimal power consumption, with touch sensor circuits operating from

a 1.8V supply voltage. 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 power

consumption of <150 uW (typical), the LDS6000 may be operated continuously in full power mode,

even when battery life is of premium importance. The low power architecture of the IDT PureTouch™

solutions eliminates the need for introduced latency periods that can cause noticeable delays and degrade

the user experience.

•ꢀ 28ꢀpinꢀ5.3mmꢀxꢀ10.2mmꢀSSOP,ꢀ

1.83mmꢀmaxꢀheight

Power supply range:

•ꢀ Touchꢀsupplyꢀ(VDD1):ꢀ1.65Vꢀ-ꢀ1.95V

•ꢀ V_DDIO=1.65Vꢀ-ꢀ3.6V

When touch inputs are not required to be active, the LDS6000 may be put into standby mode, reducing

typical power consumption below 1 uW.

Applications:

•ꢀ Mobileꢀhandsetsꢀandꢀsmartphones

VDDIO (1.65V~3.6V)

•ꢀ Personalꢀmusicꢀandꢀmediaꢀplayersꢀ

(MP3/MP4)

•ꢀ Gamingꢀdevices

LDS6000

Host Processor

with SPI

•ꢀ Remoteꢀcontrols

VDDIO

I/F SEL

VDD

VSS

SENSOR

PCB

•ꢀ Television,ꢀaudio/video

•ꢀ Set-topꢀboxes

SHIELD

CSB

SCLK

SDI

SSB

•ꢀ Multi-functionꢀprinters

•ꢀ Enterpriseꢀtelephony

SCLK

MOSI

MISO

SDO

INTB

RESETB

GPIO

INTB

RESETB

floating

TEST

C10

C11

C12

C13

C14

floating

VDD1 (1.65V~1.95V)

VDD1

VSS1

C1: > 1uF

Figure 2. LDS6000 application diagram

Discover what IDT know-how can do for you.

www.IDT.com/go/touch

Technology, Inc. All other brands, product names and marks are or may be trademarks or registered trademarks used to identify products or services of their respective owners.

Printed in USA 08-09/MG/BWD/PDF_r7_v1

FLYR-LDS6000-089

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