TYPICAL SINGLE - SUPPLY APPLICATIONS
ACTIVER BANDPASS FILTER
LM124A-LM224A-LM324A
HIGH INPUT Z, DC DIFFERENTIAL AMPLIFIER
For RR-----12-- = RR-----43--
(CMRR depends on this resistor ratio match)
Fo = 1kHz
Q = 50
Av = 100 (40dB)
e0
1
+
RR-----43--
(e2 - e1)
As shown e0 = (e2 - e1)
USING SYMETRICAL AMPLIFIERS TO REDUCE INPUT CURRENT (GENERAL CONCEPT)
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