PDF《M7615 DC PIR CONTROLLER》

1/7 2005-08-01 DC PIR CONTROLLER PIR CONTROLLER M7615 GENERAL DESCRIPTION 功能叙述 The M7615 is a low power PIR ( passive infra-red ) controller with hi level output , paired with M3766 for battery power door bell/ relay /alarm application.

With special noise immunity technique , M7615 is the most stable PIR controller you can find on the market. More than this , there are few components needed in its application circuit which can reduce material cost and increase competitive. FEATURES 产品特长 ?High noise immunity. ?Low stand-by current <

90uA ?Drive either Relay. ?Adjustable play on duration and latch duration. ?On-chip voltage regulator. ?20 second warm-up. ?CDS input conditionally. ?14 pin DIP or SOP package. APPLICATIONS 产品应用 ?PIR light controller , Motion Detector , Alarm system , Auto-door bell. PIN ASSIGNMENT VSS TE RTX NII1 UOU2 RELAY RT1 VDD CDS M7615-P14

1 14

7 8 II2 II1 UOU1 SHENZHEN CONTIN TECHNOLOGY LIMITED 2/7 2005-08-01 DC PIR CONTROLLER PIR CONTROLLER M7615 PIN DESCRIPTION Pin Name I/O Description Pin No. VDD Operation voltage:5V,Stand by current:80~90uA

1 TE I TE = 1MΩ

4 VSS System ground.

5 CDS I Connect to a CDS for inhibit , when Vinhi =

0 disable ,Vinhi =

1 enable trigger

6 RTX I Delay timer oscillator input The delay time of receiving PIR signal to trigger Encoder or a high signal to trigger relay. The range for:RTX=2 KΩ ~

5 MΩ CTX=100P~0.01UF FOR 100P or 0.01uf delay time=45000 R*C FOR 1000P delay time=35000 R*C Delay Time:20 ms ~ 2250s Ex:CTX=100p,RTX=680KΩ,Delay Time=3.1s CTX=1000p,RTX=100KΩ,Delay Time=3.5s CTX=0.01uf,RTX=10KΩ,Delay Time=4.5s

7 RTI I Latch timer oscillator input The latch time of the range for:RTI=100 KΩ ~

1 MΩ CTI=0.1UF(fix) Contain Time=35 R*C Contain time:>

0.5s ~ Ex:CTI=0.1uf,RTI=1MΩ,Contain Time=3.5s

8 UOU2 O

2 nd stage OP amp output.

9 II2 I

2 nd stage OP amp negative input.

10 NII1 I 1st stage OP amp positive input.

11 II1 I 1st stage OP amp negative input.

12 RELAY O To drive relay,active high.

13 UOU1 I 1st stage OP amp output.

14 Delay timing and Latch timing oscillator input pin, connect to external RC to obtain desired delay duration. Variable delay(latch) duration can be obtained by selecting various values of RC or using a variable resistor. 3/7 2005-08-01 DC PIR CONTROLLER PIR CONTROLLER M7615 The PIR signal amplifier needs a warm up period after power-on, so during this time the input should be disabled TIMING RELATIONSHIP: BLOCK DIAGRAM RD CD Fig.1 Timing Oscillator Fig.2 PIR Amplifier Block Diagram Signal on UOU2 Pin 0.3 VDD 0.7 VDD T RELAY Window detector Pulse width detector T1 T2 T1:Delay Time T2:Latch ( Contain )Time T:Warm Up Time (Q20s ) OP1 OP2 VCP VCN comparator OP1N OP1O OP1P OP2P OP2O OP2N 0.5 VDD SHENZHEN CONTIN TECHNOLOGY LIMITED 4/7 2005-08-01 DC PIR CONTROLLER PIR CONTROLLER M7615 ABSOLUTE MAXIMUM RATING (TA=25℃) Parameter Sym. Rating Unit CDS RELAY LOGIC CONTROL CDS VDD M7615 RTI OSC LATCH TIMMER VDD OSC DELAY TIMMER RTX VDD 0.3VDD DETECTOR VOLTAGE PIR WIDTH DETECTOR 0.7VDD WINDOW REF. + - PULSE + - + - II1 NII1 II2 UOU2 NII2 UOU1 0.5VDD + - VDD TE 5/7 2005-08-01 DC PIR CONTROLLER PIR CONTROLLER M7615 Power Supply VDD With Respect to VSS VDD - VSS 5.6 V Voltage On Any Pin -0.3 to 5.6 V Operating Temperature Top -20 to

70 ℃ Storage Temperature -65 to

150 ℃ ELECTRICAL CHARACTERISTICS Characteristics Sym. Min. Typ. Max. Unit Conditions Supply Voltage VDD 4.2

5 5.5 V Stand by Current IST ― ―

100 uA Operating Current IDD 1.8 ― 2.5 mA Stable Voltage VREF 2.1 2.5 2.75 V VDD >