UAF42_14 datasheet(7/14 Pages) TI1

Part #	UAF42

Description	UNIVERSAL ACTIVE FILTER

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Manufacturer	TI1 [Texas Instruments]

Direct Link	http://www.ti.com

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7 / 14 page

A

1

R

2

50kW

A

2

A

3

R

4

50kW

11

R

1

50kW

R

F1

R

F2

C

1

1000pF

C

2

1000pF

3

13

8

7

14

R

Q

LPOut

BPOut

HPOut

1

12

50kW

2

V

IN

R

G

DesignEquations

1.

=

wn

2

R

2

R R

R

C C

1

F1

F2

1

2

2.Q =

1

R

Q

R

4

1+

R

C

F1

1

R R R

C

1

2

F2

2

1/2

3.QA

=QA

LP

HP

R R

C

1

F1

1

R R

C

2

F2

2

1/2

R

1

R

2

=A

BP

4.A

=

LP

5.A

=

HP

R

1

R

2

A

=

LP

R

1

+

R

2

1

+

R

G

1

RG

R

1

R

G

R

2

6.A

=

BP

1

R

Q

R

4

1+

R

1

+

R

2

1

+

R

G

1

R

G

Note:IfR =50k ,theexternalQ-settingresistor

canbeeliminatedbyconnectingpin2toground.

W

Q

PinnumbersareforDIP

package.SOIC-16pinout

isdifferent.

UAF42

www.ti.com

SBFS002B – JULY 1992 – REVISED OCTOBER 2010

Figure 2. Inverting Pole-Pair

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