TLC080 datasheet(20/52 Pages) TI

Teilenummer	TLC080

Bauteilbeschribung	FAMILY OF WIDE BANDWIDTH HIGH OUTPUT DRIVE SINGLE SUPPLY OPERATIONAL AMPLIFIERS

PDF	52 Pages

Scroll/Zoom	100%

Hersteller	TI [Texas Instruments]

Direct Link	http://www.ti.com

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20 / 52 page

TLC080, TLC081, TLC082, TLC083, TLC084, TLC085, TLC08xA

FAMILY OF WIDEBANDWIDTH HIGHOUTPUT DRIVE SINGLE SUPPLY

OPERATIONAL AMPLIFIERS

SLOS254D − JUNE 1999 − REVISED FEBRUARY 2004

WWW.TI.COM

APPLICATION INFORMATION

general configurations

When receiving low-level signals, limiting the bandwidth of the incoming signals into the system is often

required. The simplest way to accomplish this is to place an RC filter at the noninverting terminal of the amplifier

(see Figure 50).

−

–3dB +

pR1C1

)

) sR1C1

Figure 50. Single-Pole Low-Pass Filter

If even more attenuation is needed, a multiple pole filter is required. The Sallen-Key filter can be used for this

task. For best results, the amplifier should have a bandwidth that is 8 to 10 times the filter frequency bandwidth.

Failure to do this can result in phase shift of the amplifier.

R1 = R2 = R

C1 = C2 = C

Q = Peaking Factor

(Butterworth Q = 0.707)

(

2 −

)

–3dB +

pRC

Figure 51. 2-Pole Low-Pass Sallen-Key Filter

TLC080 Datenblatt(PDF) 20 Page - Texas Instruments