LM324S, LM2902S

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7

2

1

For less than 10% error from operational amplifier,

If source impedance varies, filter may be preceded with

voltage follower buffer to stabilize filter parameters.

BW

< 0.1

Then:

R3 =

Q

R3

R1 =

R1 R3

R2 =

+

-

+

-

f =

R3 =

R2 R1

R2 + R1

R2

300 k

75 k

R3

R1

100 k

C

Triangle Wave

Output

Square

Wave

Output

if

1/4

LM324S

1/4

LM324S

Figure 8. Function Generator

Figure 9. Multiple Feedback Bandpass Filter

1

2

-

+

R3

R1

R2

C

C

CO = 10 C

1/4

LM324S

ORDERING INFORMATION

Device

Operating Temperature Range

Package

LM324SNG

0

°C to +70°C

PDIP−14

(Pb−Free)

25 Units / Rail

LM2902SNG

−40

°C to +105°C

PDIP−14

(Pb−Free)

25 Units / Rail

†For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging

Specifications Brochure, BRD8011/D.