SX8661 datasheet(9/88 Pages) SEMTECH

9 / 88 page

ADVANCED COMMUNICATIONS & SENSING

DATASHEET

Revision v3.2, January 2011

www.semtech.com

SX8661

Low Power, Capacitive Button Touch and Proximity Controller

(8 sensors) with LED Drivers and Analog Output

2.4

Electrical Specifications

All values are valid within the operating conditions unless otherwise specified.

Parameter

Symbol

Conditions

Min.

Typ.

Max.

Unit

Current consumption

Active mode, average

IOP,active

30ms scan period,

8 sensors enabled,

common sensitivity 0

proximity sensing OFF

200

275

Doze mode, average

IOP,Doze

195ms scan period,

8 sensors enabled,

common sensitivity 0

proximity sensing OFF

100

Sleep

IOP,sleep

I2C listening,

sensors disabled

Active mode, average

(Quick Start application)

IQS,active

30ms scan period,

8 sensors enabled,

sensitivity 2 for buttons

sensitivity 7 for proximity

proximity sensing ON

800

1100

Doze mode, average

(Quick Start application)

IQS,Doze

195ms scan period,

8 sensors enabled,

sensitivity 2 for buttons

sensitivity 7 for proximity

proximity sensing ON

160

220

ResetB, SCL, SDA

Input logic high

VIH

0.7*VDD

VDD + 0.3

Input logic low

VIL

VSS applied to GND pins

VSS - 0.3

0.8

Input leakage current

CMOS input

±1

Pull up resistor

RPU

when enabled

660

Pull down resistor

RPD

when enabled

660

GPIO set as Output, IntB, SDA

Output logic high

VOH

IOH<4mA

VDD-0.4

Output logic low

VOL

IOL,GPIO<12mA

IOL,SDA,INTB<4mA

0.4

Start-up

Power up time

tpor

time between rising edge

VDD and rising INTB

275

RESETB

ResetB pulse width

tres

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