Datasheet

Typical Single - Supply Applications LM124-LM224-LM324
10/16
Figure 20. Activer bandpass filter Figure 21. High input Z, DC differential
amplifier
Figure 22. Using symmetrical amplifiers to
reduce input current (general
concept)
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
-------+
⎝⎠
⎛⎞