LMF60 datasheet(18/20 Pages) NSC

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LMF60 Datasheet(PDF) 18 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.

Part #	LMF60

Description	LMF60 High Performance 6th-Order Switched Capacitor Butterworth Lowpass Filter

PDF	20 Pages

Scroll/Zoom	100%

Manufacturer	NSC [National Semiconductor (TI)]

Direct Link	http://www.national.com

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18 / 20 page

20 Designing with the LMF60 (Continued)

TLH9294 – 31

f0 e

0R1R2C1C2

H0 e R4 R3 (H0 e 1 when R3 and R4 are omitted and VO2 is directly tied to INV2)

Design Procedure

pick C1

R2 e

2QC100

for a 2nd Order Butterworth Q e 0707

R2 e

0113

C1f0

make R1 e R2

and

C2 e

(2qf0R1)2C1

Note

The parallel combination of R4 (if used) R1 and R2 should be t 10 kX in order not to load Op-Amp

FIGURE 15 Second Order Butterworth Anti-Aliasing Filter Using Uncommitted Op-Amp

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