FIGURE 5. LS65

22 DIFFERENTIAL INTERFACE TO PIR SENSOR PAIR

R1 = 36k

Ω

C1 = 100μF

R2 = 2.7M

Ω

C2 = 0.01μF

R3 = 36k

Ω

C3 = 33μF

R4 = 2.7M

Ω

C4 = 0.01μF

R5 = 36k

Ω

C5 = 33μF

R6 = 36k

Ω

C6 = 33μF

R7 = 36k

Ω

C7 = 0.01μF

R8 = 36k

Ω

C8 = 0.1μF

R9 = 5.6M

Ω

C9 = 0.1μF

R10 = 5.6M

Ω

PIRs = Perkin-Elmer LHi 958, 878; Nicera RE200B, SDA02-54 (Typical)

All Resistors 1/4 W. All Capacitors 10V

65

22-110712-7

AMP 1

OUT

AMP 1

(-) IN

AMP 2

(-) IN

AMP 1

(+) IN

AMP 2

OUT

5V REG

OUT

C3

R3

C4

R4

1

2

3

14

15

16

R8

C9

R1

C1

PIR

SENSOR 1

R2

C2

LS65

22

R7

C8

R10

R9

C7

R6

C6

R5

C5

PIR

SENSOR 2

+

-

+

-

+-

+

-

The information included herein is believed to be

accurate and reliable. However, LSI Computer Systems,

Inc. assumes no responsibilities for inaccuracies, nor for

any infringements of patent rights of others which may

result from its use.

NOTE: A pair of PIR Sensors may be used in applications where a wider optical field of view is needed.