Datasheet

DocID4797 Rev 6 11/16
LM224A, LM324A Typical single-supply applications
16
Figure 27. Using symmetrical amplifiers to reduce input current (general concept)
Figure 25. Active bandpass filter Figure 26. High input Z, DC differential amplifier
Fo = 1kHz
Q = 50
Av = 100 (40dB)
For
(CMRR depends on this resistor ratio match)
R
1
R
2
-------
R
4
R
3
-------=
e
0
(e
2
- e
1
)
As shown e
0
= (e
2
- e
1
)
1
R
4
R
3
-------+
⎝⎠
⎛⎞