The BA4425F is a monolithic IC designed for FM front end use. It consists of an RF amplifier circuit, mixer circuit, oscillation circuit, and IF buffer amplifier.

FEATUREs
1) Uses double balance mixer to improve intermodulation characteristics.
2) Includes a clamp diode in the mixer output.
3) Local oscillation buffer on-chip for improved re sponse to strong input.
4) The output impedance of the IF buffer is matched with the ceramic filter impedance at 330Ω.
5) Mixer input coupling capacitor included on-chip.
6) Includes a feedback capacitor for the local oscillation circuit.
7) Reception of VHF terrestrial TV channels is possible.
8) Compact SOP 8-pin package.

APPLICATIONs
  FM radios
  Radio cassette players
  Home stereos
  Headphone stereos