FEATURES
•FulltouchscreencontrollerICwithupto35
sensorchannels
•OptimizedforIDT’sTrueSingle-LayerSensor
withMulti-Touchcapability
•10bitresolutioninX&Ydirections
•Nomulti-touchghostingeffect
•Two-fingermulti-touchsupport
•8ms(120Hz)datarate
•Supportsscreensizesof5”andless
•Low-powermode
•5x540-pinTQFN(LDS7000)or
6x648-pinTQFNpackage(LDS7001)
•I2CinterfaceandSPIinterface(LDS7001)only
CUSTOMER BENEFITS
•Simplifiedtouchscreensensormanufacturing,
loweringcostofsolution
•Easier(artifact-free)host-sidegesturerecognition
•Fasterresponsetotouchinputs
•Enableslowerbacklightsetting,
savingbatterypower
•Enablesefficientroll-to-rollmanufacturing
oftouchscreensensors
IDT|THEANALOG+DIGITALCOMPANY LDS7000 PRODUCT FAMILY OVERVIEW
Description
The LDS700x family of devices (LDS7000 and LDS7001) are the world’s first true single layer, full-
touch capacitance screen devices, with multi-touch capabilities. These devices help to enhance
the human-machine interface experience by supporting advanced features such as swipe, ges-
tures, expand and squeeze. Employing a capacitance-to-digital convertor coupled with a unique
and proprietary Indium-Tin-Oxide (ITO) pattern, the LDS7000 products offer best-in-class linearity
and signal to noise ratio performance for all types of applications. The LDS7000 has unique built-in
firmware which provides true x/y data and eliminates multi-touch ghosting effects.
Automatic on-chip calibration takes into account the effects of environmental changes such as
temperature, humidity and dust and ensures to establish an accurate baseline capacitance for
each sensor to ensure maximum responsiveness to true touch events.
The 40-pin LDS7000 supports 30 sensors and uses an I2C interface for communicating with the
host. The 48-pin LDS7001 supports 35 sensors and is configurable to use either I2C or SPI inter-
faces for communicating with the host.
The LDS700x family supports supply voltages from 2.7 to 3.6V. The 48-pin LDS7001 offers General
Purpose I/O (GPIO). The I2C clock and data lines support a 1.8V to 3.6V voltage interface using
the VDDIO pin. The SPI interface supports 2.7 to 3.6V operation and VDDIO voltage must be the same
as VDD.
Integrated DeviceTechnology
Integrated DeviceTechnology
1
True Single-Layer Multi-Touch Projected
Capacitive Touch Screen Solution
POWER MANAGEMENT | ANALOG & RF | INTERFACE & CONNECTIVITY | CLOCKS & TIMING | MEMORY & LOGIC | TOUCH & USER INTERFACE | VIDEO & DISPLAY | AUDIO
IDT|THEANALOG+DIGITALCOMPANY LDS7000 PRODUCT FAMILY OVERVIEW
Integrated DeviceTechnology
2
True Single-Layer Multi-Touch Projected
Capacitive Touch Screen Solution
POWER MANAGEMENT | ANALOG & RF | INTERFACE & CONNECTIVITY | CLOCKS & TIMING | MEMORY & LOGIC | TOUCH & USER INTERFACE | VIDEO & DISPLAY | AUDIO
DISCLAIMERIntegratedDeviceTechnology,Inc.(IDT)anditssubsidiariesreservetherighttomodifytheproductsand/orspecificationsdescribedhereinatanytimeandatIDT’ssolediscretion.Allinformationinthisdocument,includingdescriptionsofproductfeaturesandperformance,issubjecttochangewithoutnotice.Performancespecificationsandtheoperatingparameters
ofthedescribedproductsaredeterminedintheindependentstateandarenotguaranteedtoperformthesamewaywheninstalledincustomerproducts.Theinformationcontainedhereinisprovidedwithoutrepresentationorwarrantyofanykind,whetherexpressorimplied,including,butnotlimitedto,thesuitabilityofIDT’sproductsforanyparticularpurpose,animplied
warrantyofmerchantability,ornon-infringementoftheintellectualpropertyrightsofothers.ThisdocumentispresentedonlyasaguideanddoesnotconveyanylicenseunderintellectualpropertyrightsofIDToranythirdparties.IDT’sproductsarenotintendedforuseinlifesupportsystemsorsimilardeviceswherethefailureormalfunctionofanIDTproductcanbereasonably
expectedtosignificantlyaffectthehealthorsafetyofusers.AnyoneusinganIDTproductinsuchamannerdoessoattheirownrisk,absentanexpress,writtenagreementbyIDT.
IntegratedDeviceTechnology,IDTandtheIDTlogoareregisteredtrademarksofIDT.Othertrademarksandservicemarksusedherein,includingprotectednames,logosanddesigns,arethepropertyofIDTortheirrespectivethirdpartyowners.©Copyright2011.Allrightsreserved. OV_LDS7000FAMILY_REVA0111
Discover what IDT know-how
can do for you:
www.IDT.com/go/Touch
APPLICATIONS
•Mobilehandsets,personalmediaplayers
•Portablenavigationdevices
•Remotecontrols
•Officeequipment,multi-functionprinters
•Settopboxes
•Homeappliances
•Browngoods
•Industrialcontrols
•Digitalcameras
•Consumerproducts
FUNCTIONAL BLOCK DIAGRAMS
PRODUCT SPECIFICATIONS
Part Number Touch Sensors SPI Interface I2C Interface GPIO’s Package
LDS7000 30 - Yes 05x5x0.75mm
40-pinTQFN
LDS7001 35 Yes Yes 16x6x0.75mm
48-pinTQFN
Touch Screen
LDS7000
Host
Processor
with I2C
VDD +(2.7V - 3.6V)
Shield
SCK/SCL
SDO/SDA
SD1/A0
CS/A1
Test
C0
C1
C29
HS
VDD
VDDIO
VSS
VCAP
VDDIO +(1.8V - 3.6V)
VDDIO
VSS
GPIO
GPIO
SCL
SDA
1µF 1µF
GND GND GND
GND
GND GND
4.7k
4.7k 4.7k 4.7k
RESET
I/F SEL
Touch Screen
LDS7001
Host
Processor
with SPI
VDD +(2.7V - 3.6V)
Shield
SCK/SCL
SDO/SDA
SD1/A0
CS/A1
Test
C0
C1
C34 HS
VDD
VDDIO
VSS
VCAP
VDD
VSS
GPIO
GPIO
CS
SCK
MISO
MOSI
1µF 1µF
GND GND GND
GND
4.7k 4.7k
RESET
I/F SEL