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LMV772MM Datasheet(PDF) 18 Page - Texas Instruments

No. de pieza LMV772MM
Descripción Electrónicos  Single/Dual/Quad, Low Offset, Low Noise, RRO Operational Amplifiers
PDF  34 Pages
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Fabricante Electrónico  TI [Texas Instruments]
Página de inicio  http://www.ti.com
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LMV772MM Datasheet(HTML) 18 Page - Texas Instruments

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f1 =
1
2SR1C1
f2 =
1
2SR2C2
HO =
-R2
R1
j (f/f1)
[1 + j (f/f1)]
H = HO
[1 + j (f/f2)]
Vi
R1
R2
+
-
VOUT
C2
C1
dB
0
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.
18
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Copyright © 2004–2010, Texas Instruments Incorporated
Product Folder Links: LMV771 LMV772 LMV774



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