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? PC2745TB, ? PC2746TB
TEST CIRCUIT
EXAMPLE OF APPLICATION CIRCUIT
The application circuits and their parameters are for references only and are not intended for use in actual design-ins.
CAPACITORS FOR THE V CC , INPUT, AND OUTPUT PINS
Capacitors of 1 000 pF are recommendable as the bypass capacitor for the V CC pin and the coupling capacitors
for the input and output pins.
The bypass capacitor connected to the V CC pin is used to minimize ground impedance of V CC pin. So, stable bias
can be supplied against V CC fluctuation.
The coupling capacitors, connected to the input and output pins, are used to cut the DC and minimize RF serial
impedance. Their capacitance are therefore selected as lower impedance against a 50 ? load. The capacitors thus
perform as high pass filters, suppressing low frequencies to DC.
To obtain a flat gain from 100 MHz upwards, 1 000 pF capacitors are used in the test circuit. In the case of
under 10 MHz operation, increase the value of coupling capacitor such as 10 000 pF.
capacitors are determined by equation, fc = 1/(2 ? RC).
Data Sheet PU10443EJ1V0DS
Because the coupling
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