TLV2464CPWR datasheet(26/54 Pages) TI

Part #	TLV2464CPWR

Description	FAMILY OF LOW-POWER RAIL-TO-RAIL INPUT/OUTPUT OPERATIONAL AMPLIFIERS WITH SHUTDOWN

PDF	54 Pages

Scroll/Zoom	100%

Manufacturer	TI [Texas Instruments]

Direct Link	http://www.ti.com

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26 / 54 page

TLV2460, TLV2461, TLV2462, TLV2463, TLV2464, TLV2465, TLV246xA

FAMILY OF LOW POWER RAILTORAIL INPUT/OUTPUT

OPERATIONAL AMPLIFIERS WITH SHUTDOWN

SLOS220J − JULY 1998 − 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 51).

−

–3dB +

pR1C1

)

) sR1C1

Figure 51. 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 52. 2-Pole Low-Pass Sallen-Key Filter

TLV2464CPWR Datasheet(PDF) 26 Page - Texas Instruments