M7620中文資料一華數(shù)據(jù)手冊PDF規(guī)格書

DESCRIPTION

The M7620 integrated circuit combines all required functions for a single chip Passive Infra Red (PIR) light controller. It is

designed for load switching with a transistor or a relay in 3 wire AC and DC systems.

A conventional PIR sensor connects directly to the PIR input. The pull-down resistor and DC decoupling circuitry are integrated on

chip.

The PIR signal is converted to a 15 bit digital value. External potentiometers or resistors are used to set the operating parameters

for sensitivity, on-time, CDS sensor. The corresponding voltage levels are converted to digital values with a 4 bit resolution all

signal processing is performed digitally.

FEATURES

? Digital signal processing

? Adjustable PIR sensitivity

? Adjustable output turn-on time

? Retrigger/Non-retrigger function

? RELAY output

? SOP-8 package

APPLICATIONS

? PIR light controller, Motion Detector, Alarm system, Auto-door bell