LDS6003 Integrated Device Technology, LDS6003 Datasheet

LDS6003

Manufacturer Part Number

LDS6003

Description

Capacitance Touch Ic 28-pin Vfqfpn Tray

Manufacturer

Integrated Device Technology

Datasheet

1.LDS6003.pdf (2 pages)

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IDT

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IDT

LDS6003

PureTouch™ Capacitance Touch IC

The LDS6003 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.

LDS6003 Features

Versatile, accurate capacitance-

to-digital converter (CDC)

• 500 kHz sigma-delta CDC

• 6 capacitance sensor input channels

• 2 ms update rate per active sensor

Integrated, automatic

calibration algorithms

• Environmental compensation

• On-chip RAM to store calibration data

Integrated touch preference modes

• Strongest single touch

• Strongest two touches

• Unrestricted (all) touches

Ultra-low touch sensor

power consumption*

• Operating mode (typical):

• Shutdown mode (typical):

Flexible interface options

• SPI-compatible serial I/F

• I

• Separate V

• GPIO and Interrupt Output

* excludes I/F and voltage dependent V

LDS6003 PureTOuCH™ CaPaCITanCe TOuCH IC

<150 uW (VDD1=1.8V)

<1 uW (VDD1=1.8V)

C-compatible serial I/F

DDIO

level for serial interface

DDIO

current

semiconductor solutions

Description

The LDS6003 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 6 sensor inputs, the LDS6003 provides the flexibility to implement multiple touch inputs using

a single controller.

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.

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

threshold levels to prevent false sensor activation. The LDS6003 is offered with both SPI-compatible and

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

RESETB

I/F SEL

Figure 1. LDS6003 block diagram

VDDIO

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

VDD1

VSS1

TEST

Reset Logic

SD0/

SDA

Power-On

Serial Interface and

Control Logic

SDI/

SCLK/

SCL

CSB/

Calibration

Engine

Calibration

LDS6003

RAM

Interrupt and GPIO Logic

GPIO

Data Registers

Control and

INTB

Sigma-Delta

CDC

Excitation

500 kHz

Source

SHIELD

Related parts for LDS6003

LDS6003 Summary of contents

Page 1

... 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. On-chip calibration logic continuously monitors the environment and automatically adjusts on-and-off threshold levels to prevent false sensor activation. The LDS6003 is offered with both SPI-compatible and 2 I C-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 ...

Page 2

... 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. When touch inputs are not required to be active, the LDS6003 may be put into standby mode, reducing typical power consumption below 1 uW. ...

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