SX8124ISTRT datasheet(1/23 Pages) SEMTECH

部件名	SX8124ISTRT

功能描述	24 hours timer synchronized on 50/60Hz mains

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制造商	SEMTECH [Semtech Corporation]

网页	http://www.semtech.com

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ADVANCED COMMUNICATIONS & SENSING

DATASHEET

SX8124

24 hours timer synchronized on 50/60Hz mains

ACS - Revision 2.4

October 2010

Description

Features

The SX8124 is 24 hours timer with an analog

programmable duty cycle that synchonizes on

European standard (220V/50Hz) and US standard

(110V/60Hz) mains for high timing precision without

calibration or resonator.

The SX8124 starts counting time when connected to

the mains, its internal counter can be reset on the

press of a button (optional) or by setting the

duration to zero. The SX8124 duty cycle is set using

one single resistive divider. Its output can be forced

on or off with the press of the optional button.

SX8124 outputs are complementary to simplify the

connection of switches and an optional LED can

confirm the timer status.

24 hours timer synchronized on mains frequency

Analog period setting

Automatic 50 Hz and 60 Hz detection

Simplest usage

Manual on/off/reset option

LED status option

Applications

Mosquito repellent

Odor killers

Illuminated decoration

Xmas animation

Ordering Information

Part number

Function

Package

SX8124ISTRT

24 hours timer

SOIC-8

- Available in tape and reel only

- WEEE/RoHS compliant. Pb-Free and Halogen Free.

Functional Bloc Diagram

PHASE

DURATION

VSS

VDD

OUT

NOUT

LED

START

SX8124

ADC

DEBOUNCE

SYNC

BURST

Reg

1.2 – 2.0 V supply

24 hours

duration

LED blink:

Once every 5 sec: off

Twice every 5 sec: on

2 Hz: ‘‘no synch’’ error

Start Timer

ON/OFF outputs

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