PIR CONTROLLER. M7620 Datasheet

M7620 CONTROLLER. Datasheet pdf. Equivalent

Part M7620
Description PIR CONTROLLER
Feature .
Manufacture MOSDESIGN
Total Page 6 Pages
Datasheet
Download M7620 Datasheet



M7620
一華半導體股份有限公司
MOSDESIGN SEMICONDUCTOR CORP.
PIR CONTROLLER
FOR DC/AC APPLICATIONS
PIR CONTROLLER
M7620
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
PIN ASSIGMENT
M7620
RETRIG
PIRIN
1
VSS
RELAY
4
8 VDD
CDS
ON-TIME
5 SENS
1/6 2016-09-09



M7620
一華半導體股份有限公司
MOSDESIGN SEMICONDUCTOR CORP.
PIR CONTROLLER
FOR DC/AC APPLICATIONS
BLOCK DIAGRAM
CDS
PIRIN
Input Amplifier
A /D Converter
Band Pass Filter
Oscillator
Controller
PIR CONTROLLER
M7620
RELAY
SENS
ON-TIME
PIN DESCRIPTION
Pin No. Name I/O
Description
Retrigger mode select input.
1 RETRIG I VDD or floatingAs long as movement is detected within the on-time, the light will remain on.
VSSThe light will first switch off, before it can be switched on again.
2 PIRIN I PIR sensor input
3 VSS
Ground
4 RELAY O Relay output pin
5
SENS
I
Sensitivity threshold adjustmentSets the sensitivity threshold required to generate a trigger
condition. Refer to Tble1
6 ON-TIME I Light on-time adjustment. Refer to Tble1
Connect to the CDS voltage divider for daytime/night auto detecting,
7 CDS I VDDEnable switching of the light
VSSDisable switching of the light
8
VDD
─ Positive power supply
2/6 2016-09-09





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