BA4424N Rohm, BA4424N Datasheet
BA4424N
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BA4424N Summary of contents
Page 1
... Audio ICs front end BA4424N The BA4424N is a monolithic IC designed for FM front end use. It consists amplifier circuit, mixer circuit, local oscillation circuit, IF buffer amplifier, and a variable capacitor-diode for AFC. FFeatures amplifier, mixer, local oscillator, IF buffer am- plifier, and AFC diode are included on-chip. ...
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... Audio ICs FBlock diagram FElectrical characteristics DC characteristics (unless otherwise noted 25_C characteristics (unless otherwise noted 25_C and V = 4V, no input 4V) CC BA4424N 49 ...
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... Pin 5 (GND), such that the connection pattern absolutely does not allow supply cur- rent to flow from Pin amplifier output pin 6 IN AFC diode pin 7 OSC pin 8 V pin 9 CC BA4424N : Z = 330 OUT : Cathode pin (anode pin is connected internally to ground) : Connect to resonating circuit : IC voltage supply pin ...
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... The IF buffer amplifier consists of an emitter-follower am- plifier circuit. The output impedance is set in the IC to 330 , and it can be directly connected to a ceramic filter. (5) Variable capacitor-diode for AFC A variable capacitor-diode is included in the IC for AFC. Utilize the FM detection output as AFC signal. The anode is connected to ground BA4424N 51 ...
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... MIX OUT pins (Pins 3 and 4 resistor inserted in the power supply line will decrease sensitivity due to the drop in the voltage. Regarding the resistor between Pin 9 and the RFout pin (Pin 3), set the value so that the voltage at Pin 3 is not lower than the voltage at Pin 2. BA4424N pin (Pin 9) and CC ...
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... Audio ICs FElectrical characteristic curves BA4424N 53 ...
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... Audio ICs FExternal dimensions (Units: mm) 54 BA4424N ...