LDS6124NQGI8 datasheet, PDF - EEWORLD Datasheet

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LDS6124NQGI8: DescriptionIC SENSOR TCH PURETOUCH 28VFQFPN; Categorysemiconductor Analog mixed-signal IC; File Size648KB，3 Pages; ManufacturerIDT (Integrated Device Technology, Inc.); Websitehttp://www.idt.com/; Environmental Compliance

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LDS6124NQGI8 Overview

IC SENSOR TCH PURETOUCH 28VFQFPN

LDS6124NQGI8 Parametric

Parameter Name	Attribute value
type	Buttons, sliders, wheels
proximity detection	none
Number of inputs	Up to 8
LED driver channel	Up to 4
interface	I²C，SMBus，SPI
resolution	-
Voltage - Power	1.65 V ~ 5.5 V
Current - Power	70µA
Operating temperature	-
Package/casing	28-WFQFN Exposed Pad
Supplier device packaging	28-VFQFPN（4x4）

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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.

Benefits

• Ease-of-use and flexible configurability

with optimized, state machine

architecture

• Longer battery life enabled with

ultra-low power consumption

• Low BOM cost and minimized solution

footprint using bare minimum of

external components

• Robust touch performance via

proprietary noise-filtering algorithms

• Customizable visual feedback effects

with integrated LED drivers (LDS6120)

Description

The LDS6100/6120 family of capacitance touch controllers from Integrated Device Technoogy

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

inputs, 10 of which may be configured as direct communication mode (DCM) outputs that emulate

mechanical buttons, enabling streamlined communication of touch events without the need to query the

serial interface bus.

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.

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, I

C-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

• Remote controls

• Television, audio/video

• Set-top boxes, multi-function printers,

enterprise telephony

• White goods

• Industrial and medical devices

LDS6120

Switch

Matrix

Power-On

Reset Logic

Calibration

Engine

Sigma-Delta

CDC

C0/DCM10

C1/DCM 11

C9/DCM9

C10/LED0

C19/LED9

VDD2

VSS2

Calibration

RAM

RESETB

TEST

VDD1

VSS1

LDOEN

VDDIO

I/F_SEL0

I/F_SEL1

LED Driver

Current Sources

LED0-

LED9

Control and

Data Registers

LDO

Serial Interface and

Control Logic

SD0/

SDA

SDI/

SCLK/ CSB/

SCL

Interrupt and GPIO Logic

GPIO

INTB

Excitation

Source

SHIELD

Figure 1. LDS6120 block diagram

IDT

LDS6100-6120 PURETOUCH

CAPACITANCE TOUCH FAMILY FLYER

Ideal Solution for Portable and “Green” Applications

The LDS6100/6120 is optimized for ultra-low power consumption. 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 current consumption of <70 μA (typical at 1.8V), the LDS6100 products may be

operated continuously in full power mode, eliminating the need for introduced latencies that can cause

noticeable delays and degrade the user experience. Where power consumption is of the utmost

importance, low power modes with configurable latencies may be utilized to further reduce current

below 25 μA (100ms sleep cycle).

The LDS6100/6120 family is optimized for a minimized solution footprint, with the functionality of multiple

components consolidated into a single device and a bare minimum of required external passive

components. A variety of package options are available including a 4mm x 4mm 28 lead TQFN package, a

5mm x 5mm 40 lead TQFN package (both with 0.75mm package thickness), or a 5.3mm x 10.2mm SSOP

package for applications requiring a wider lead pitch.

*For direct application of 1.8V voltage. For voltages higher than 1.8V, apply voltage to VDDIO and tie VDD1 to ground though C2.

Figure 2. LDS6120 application diagram (typical)

LDS 6100 / 6120 Features

Versatile, accurate CDC

Ultra-low touch sensor power

consumption

• Up to 20 capacitance sensor input channels

• Configurable hysteresis and debounce

• Full power operating mode (typical): <125 μW (VDD1=1.8V)

• Low power operating mode (typical): <50 μW (VDD1=1.8V,

100ms sleep cycle)

• Shutdown mode (typical): <1 μW (VDD1=1.8V)

• Auto environmental compensation

• Integrated noise immunity algorithms for high-EMI applications

• Strongest single touch / two touches

• Unrestricted (all) touches

• Location, scroll direction, and 2x interpolation supported natively

Integrated, automatic calibration

algorithms

Integrated touch preference modes

Built-in slider/scroll support

IDT

LDS6100-6120 PURETOUCH

CAPACITANCE TOUCH FAMILY FLYER

LDS6124NQGI8 Related Products

	LDS6124NQGI8	LDS6107PYGI8	IDTLDS6100NQGI8	LDS6108NQGI8	LDS6124PYGI8	LDS6126PYGI8	LDS6104PYGI8	LDS6126NQGI8	LDS6128NQGI8	LDS6104NQGI8
Description	IC SENSOR TCH PURETOUCH 28VFQFPN	PureTouchÂ® Capacitance Touch IC Family with Integrated LED Drivers	IC SENSOR TCH PURETOUCH 40VFQFPN	IC SENSOR TCH PURETOUCH 40VFQFPN	IC SENSOR TCH PURETOUCH 28SSOP	IC SENSOR TCH PURETOUCH 28SSOP	IC SENSOR TCH PURETOUCH 28SSOP	IC SENSOR TCH PURETOUCH 28VFQFPN	IC SENSOR TCH PURETOUCH 40VFQFPN	IC SENSOR TCH PURETOUCH 28VFQFPN
type	Buttons, sliders, wheels	-	Buttons, sliders, wheels	Buttons, sliders, wheels	Buttons, sliders, wheels	Buttons, sliders, wheels	Buttons, sliders, wheels	Buttons, sliders, wheels	Buttons, sliders, wheels	Buttons, sliders, wheels
proximity detection	none	-	none	none	none	none	none	none	none	none
Number of inputs	Up to 8	-	Up to 20	Up to 16	Up to 8	Up to 11	Up to 8	Up to 11	Up to 16	Up to 8
interface	I²C，SMBus，SPI	-	I²C，SMBus，SPI	I²C，SMBus，SPI	I²C，SMBus，SPI	I²C，SMBus，SPI	I²C，SMBus，SPI	I²C，SMBus，SPI	I²C，SMBus，SPI	I²C，SPI
Voltage - Power	1.65 V ~ 5.5 V	-	1.65 V ~ 5.5 V	1.65 V ~ 5.5 V	1.65 V ~ 5.5 V	1.65 V ~ 5.5 V	1.65 V ~ 5.5 V	1.65 V ~ 5.5 V	1.65 V ~ 5.5 V	1.65 V ~ 5.5 V
Current - Power	70µA	-	7.75mA	70µA	70µA	70µA	70µA	70µA	70µA	70µA
Package/casing	28-WFQFN Exposed Pad	-	40-VFQFN Exposed Pad	40-VFQFN Exposed Pad	28-SSOP (0.209", 5.30mm wide)	28-SSOP (0.209", 5.30mm wide)	28-SSOP (0.209", 5.30mm wide)	28-WFQFN Exposed Pad	40-VFQFN Exposed Pad	28-WFQFN Exposed Pad
Supplier device packaging	28-VFQFPN（4x4）	-	40-VFQFPN（5x5）	40-VFQFPN（5x5）	28-SSOP	28-SSOP	28-SSOP	28-VFQFPN（4x4）	40-VFQFPN（5x5）	28-VFQFPN（4x4）

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