lmv358-mda National Semiconductor Corporation, lmv358-mda Datasheet - Page 18

• Manufacturer Part Number: lmv358-mda
• Description: General Purpose, Low Voltage, Rail-to-rail Output Operational Amplifiers
• Manufacturer: National Semiconductor Corporation

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where for all three filters,
A design example for a bandpass filter is shown below:
Assume the system design requires a bandpass filter with f
= 1 kHz and Q = 50. What needs to be calculated are capacitor
and resistor values.
First choose convenient values for C
Then from Equation 11,
2R
C
2
1
= R
= 1200 pF
1
= 30 kΩ
1
, R
1
and R
FIGURE 15. State Variable Active Filter
2
:
(11)
(12)
O
18
From Equation 12,
From the above calculated values, the midband gain is
H
have been added to Figure 15.
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 ca-
pacitor C.
0
= R
3
/R
2
= 100 (40 dB). The nearest 5% standard values
FIGURE 16. Pulse Generator
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