SX8661Z datasheet(1/87 Pages) SEMTECH

номер детали	SX8661Z

подробное описание детали	Low Power, Capacitive Button Touch and Proximity Controller with LED Drivers and Analog Output

PDF	87 Pages

Scroll/Zoom	100%

производитель	SEMTECH [Semtech Corporation]

домашняя страница	http://www.semtech.com

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ADVANCED COMMUNICATIONS & SENSING

DATASHEET

Revision v4.0, February 2016

www.semtech.com

1

SX8661Z

Low Power, Capacitive Button Touch and Proximity Controller

(8 sensors) with LED Drivers and Analog Output

GENERAL DESCRIPTION

The SX8661Z is an ultra low power, fully integrated

8-channel solution for capacitive touch-button and

proximity

detection

applications.

Unlike

many

capacitive touch solutions, the SX8661Z features

dedicated capacitive sense inputs (that requires no

external components) in addition to 8 general

purpose I/O ports (GPIO). Each of the 8 on-chip

GPIO/LED driver is equipped with independent PWM

source for enhanced visual effect such as dimming,

and breathing.

The SX8661Z includes a capacitive 10 bit ADC

analog interface with automatic compensation up to

100pF.

The

high

resolution

capacitive

sensing

supports a wide variety of touch pad sizes and

shapes and allows capacitive buttons to be created

using thick overlay materials (up to 5mm) for an

extremely robust and ESD immune system design.

The SX8661Z incorporates a versatile firmware that

was specially designed to simplify capacitive touch

solution design and offers reduced time-to-market.

Integrated

multi-time

programmable

memory

provides the ultimate flexibility to modify key firmware

parameters (gain, threshold, scan period, auto offset

compensation) in the field without the need for new

firmware development.

The SX8661Z supports the 400 kHz I²C serial bus

data protocol and includes a field programmable

slave address. The tiny 4mm x 4mm footprint makes

it an ideal solution for portable, battery powered

applications where power and density are at a

premium.

TYPICAL APPLICATION CIRCUIT

SX8661Z

cap2

cap3

cap4

cap5

cap6

cap7

gnd

gpo5

gpo4

gpo3

gpo2

gpo1

gnd

gpo0

analog

sensor

interface

micro

processor

RAM

ROM

NVM

I2C

GPIO

controller

power management

clock

generation

RC

PWM

LED

controller

bottom plate

cap0

cap1

d1

d0

d2

d3

d4

d6

mother board

Analog Output Interface

d5

KEY PRODUCT FEATURES

 Complete 8 Sensors Capacitive Touch-Button Solution

o

Up to 8 LED Drivers for individual Visual Feedback with

Auto Lightening

o

Configurable Single or Continuous Fading Mode

o

256 steps PWM Linear and Logarithmic control

 Proximity Sensing up to several centimetres

 High Resolution Capacitive Sensing

o

Up to 100pF of Offset Cap. Compensation at Full

Sensitivity

o

Capable of Sensing up thru 5mm thick Overlay Materials

 Up to 2 Analog Output Interfaces (AOI-A and AOI-B)

o

Enable button detection thru host’s ADC

 Support of buzzer for audible feedback

 User-selectable Button Reporting Configuration

o

Report Single or Report Strongest

 Extremely Low Power

o

8uA (typ) in Sleep Mode

o

70uA (typ) in Doze Mode (195ms)

o

200uA (typ) in Active Mode (30ms)

 Programmable Scanning Period from 15ms to several seconds

 Auto Offset Compensation

o

Eliminates false triggers due to environmental factors

(temperature, humidity)

o

Initiated on power-up and configurable intervals

 Multi-Time In-Field Programmable Firmware Parameters

for Ultimate Flexibility

o

On-chip user programmable memory for fast, self

contained start-up

 No External Components per Sensor Input

 Internal Clock Requires No External Components

 Differential Sensor Sampling for Reduced EMI

 Optional 400 KHz I²C Interface with Programmable Address

 -40°C to +85°C Operation

APPLICATIONS

 LCD TVs, Monitors

 White Goods

 Notebook/Netbook/Portable/Handheld computers

 Consumer Products, Instrumentation, Automotive

 Mechanical Button Replacement

ORDERING INFORMATION

Part Number

Temperature

Range

Package

SX8661I07ZULTRT

1 -40°C to +85°C Lead Free MLPQ-UT28

1 3000 Units/reel

* This device is RoHS/WEEE compliant and Halogen Free

Аналогичный номер детали - SX8661Z

производитель	номер детали	датащи	подробное описание детали
Semtech Corporation	SX8661	1Mb / 88P	Low Power, Capacitive Button Touch and Proximity Controller
Semtech Corporation	SX8661I07AULTRT	1Mb / 88P	Low Power, Capacitive Button Touch and Proximity Controller

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Аналогичное описание - SX8661Z

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	SX8661	1Mb / 88P	Low Power, Capacitive Button Touch and Proximity Controller
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	SX8635	1Mb / 81P	Low Power, Capacitive Button and Wheel Touch Controller with Enhanced LED
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