BA4424N

FM / TV前端 FM / TV front end

The is a monolithic IC designed for FM front end use. It consists of an RF amplifier circuit, mixer circuit, local oscillation circuit, IF buffer amplifier, and a variable capacitor-diode for AFC.

Features

1 An RF amplifier, mixer, local oscillator, IF buffer amplifier, and AFC diode are included on-chip.

2 Reception of VHF terrestrial TV channels is possible.

3 Uses a double balance mixer to improve intermodulation characteristics.

4 Includes a clamp diode in the mixer output.

5 Local oscillation buffer on-chip for improved response to strong input.

6 The output impedance of the IF buffer amplifier is matched with the ceramic filter impedance at 330Ω.

7 A resistive load can also be used for the mixer output.

8 Mixer input coupling capacitor included on-chip.

9 Includes a feedback capacitor for the local oscillation circuit.

10 Compact 9-pin SIP package. Pins arranged for convenient mounting.