LMV772MASLASHNOPB datasheet(18/34 Pages) TI

Teilenummer	LMV772MA/NOPB

Bauteilbeschribung	Single/Dual/Quad, Low Offset, Low Noise, RRO Operational Amplifiers

PDF	34 Pages

Scroll/Zoom	100%

Hersteller	TI [Texas Instruments]

Direct Link	http://www.ti.com

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18 / 34 page

f1 =

2SR1C1

f2 =

2SR2C2

HO =

-R2

j (f/f1)

[1 + j (f/f1)]

H = HO

[1 + j (f/f2)]

VOUT

f = fo

-20dB/dec

f (Hz)

|H|

|HO|

LMV771, LMV772, LMV774

SNOSA04F – MAY 2004 – REVISED SEPTEMBER 2010

www.ti.com

Figure 10. Highpass Filter Transfer Function

BAND PASS FILTER

Figure 11. Bandpass Filter

Combining a low pass filter and a high pass filter will generate a band pass filter. In this network the input

impedance forms the high pass filter while the feedback impedance forms the low pass filter. Choosing the

corner frequencies so that f1 < f2, then all the frequencies in between, f1 ≤ f ≤ f2, will pass through the filter while

frequencies below f1 and above f2 will be cut off.

The transfer function can be easily calculated using the same methodology as before.

(18)

Where

(19)

The transfer function is presented in the following figure.

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LMV772MA/NOPB Datenblatt(PDF) 18 Page - Texas Instruments