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Audio ICs

FM / TV front end

BA4425F

The BA4425F is a monolithic IC designed for FM front end use. It consists of an RF amplifier circuit, mixer circuit, oscilla-

tion circuit, and IF buffer amplifier.

FApplications

FM radios

Radio cassette players

Home stereos

Headphone stereos

FFeatures

1) Uses double balance mixer to improve intermodula-

tion 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 330

Ω.

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.

FAbsolute maximum ratings (Ta = 25_C)

FRecommended operating conditions (Ta = 25_C)