TLC080 datasheet(20/51 Pages) TI

部品番号	TLC080

部品情報	FAMILY OF WIDE-BANDWIDTH HIGH-OUPTUP-DRIVE SINGLE SUPPLY OPERATIONAL AMPLIFIERS

PDF	51 Pages

Scroll/Zoom	100%

メーカー	TI [Texas Instruments]

ホームページ	http://www.ti.com

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20 / 51 page

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

FAMILY OF WIDEBANDWIDTH HIGHOUTPUT DRIVE SINGLE SUPPLY

OPERATIONAL AMPLIFIERS

SLOS254E − JUNE 1999 − REVISED APRIL 2006

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 データシート(PDF) 20 Page - Texas Instruments