Datasheet

BISS0001

Micro Power PIR Motion Detector IC

===========================================

Features

 Low power CMOS technology (ideal for battery operated PIR devices)

 CMOS high input impedance operational amplifiers

 Bi-directional level detector / Excellent noise immunity

 Built-in Power up disable & output pulse control logic

 Dual mode : retriggerable & non-retriggerable

Pin description

Pin Number Symbol Description

A Retriggerable & non-retriggerable mode select

(A=1 : re-triggerable)

VO Detector output pin (active high)

RR1 Output pulse width control (Tx) * See definition below

RC1 Output pulse width control (Tx) *

RC2 Trigger inhibit control (Ti) *

RR2 Trigger inhibit control (Ti) *

Vss Ground

VRF RESET & voltage reference input

(Normally high. Low=reset)

VC Trigger disable input

(VC >0.2Vdd=enable; Vc<0.2Vdd =disabled)

IB Op-amp input bias current setting

Vdd

Supply voltage

2OUT

stage Op-amp output

2IN

stage Op-amp inverting input

1IN

1 st stage Op-amp non-inverting input

1IN

1 st stage Op-amp inverting input

1OUT

1 st stage Op-amp output

Tx = The time duration during which the output pin (Vo) remains high after triggering.

Ti = During this time period, triggering is inhibited. See timing charts for details.

Tx ≈ 24576 xR10 x C6； Ti ≈ 24 x R9 x C7。 (ref to schematic)

PAGE 1
BISS0001 Micro Power PIR Motion Detector IC =========================================== Features Low power CMOS technology (ideal for battery operated PIR devices) CMOS high input impedance operational amplifiers Bi-directional level detector / Excellent noise immunity Built-in Power up disable & output pulse control logic Dual mode : retriggerable & non-retriggerable Pin description Pin Number Symbol 1 A Description 2 3 4 5 6 7 8 VO RR1 RC1 RC2 RR2 Vss VRF 9 VC 10 11 12 13 14 IB Vdd 2OUT 2IN1I
PAGE 2
Absolute max. ratings Description Supply voltage Input voltage Output current Operating temperature Storage temperature Condition --Vdd=5V -- Range 3~5 Vss-0.3~ Vdd+0.3 10 -20 ~ +70 Unit V V mA °C -- -40 ~ +125 °C Retrigerrable waveform (NOTE : VH=0.7Vdd, VL=0.
PAGE 3
Non-retriggerable waveform (NOTE : VH=0.7Vdd, VL=0.
PAGE 4
Application Example -- Passive Infrared Detector for alarm system Tx ≈ 24576 x R10 x C6 ； Ti ≈ 24 x R9 x C7。 (ref to schematic) R3 is a light dependent resistor which has low resistance under strong ambient light. This causes the detector to be operational only when the detection area is sufficiently dark.