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LMV321 Folha de dados(PDF) 18 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor. Click here to check the latest version.
Nome de Peças LMV321
Descrição Electrónicos  General Purpose, Low Voltage, Rail-to-Rail Output Operational Amplifiers
PDF  27 Pages
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Fabricante Electrônico  NSC [National Semiconductor (TI)]
Página de início  http://www.national.com
Logo NSC - National Semiconductor (TI)

LMV321 Folha de dados(HTML) 18 Page - National Semiconductor (TI)

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Application Notes (Continued)
where for all three filters,
(11)
(12)
A design example for a bandpass filter is shown below:
Assume the system design requires a bandpass filter with f
O
= 1kHz and Q = 50. What needs to be calculated are
capacitor and resistor values.
First choose convenient values for C
1,R1 and R2:
C
1 = 1200pF
2R
2 =R1 = 30k
Ω
Then from Equation (11),
From Equation (12),
From the above calculated values, the midband gain is H
0 =
R
3/R2 = 100 (40dB). The nearest 5% standard values have
been added to Figure 15.
4.5 PULSE GENERATORS AND OSCILLATORS
A pulse generator is shown in Figure 16. Two diodes have
been used to separate the charge and discharge paths to
capacitor C.
10006039
FIGURE 15. State Variable Active Filter
www.national.com
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