243

Audio ICs

Dual recording / playback preamplifier

for radio cassette recorders

BA3420AL

The BA3420AL is dual recording / playback preamplifier for radio cassette players. It has an internal switch for switching

between playback head, mic, and radio input modes, and also includes a bias oscillator and regulated voltage source

for radio use.

All control is possible with one external switch, allowing designers to reduce the number of external components and

the size of their set designs.

FApplications

Radio cassette recorders

FFeatures

1) Internal three-mode input / output switch for playback

head, mic and radio modes.

2) Built-in bias oscillator and regulated voltage source

for radio use.

3) Control of the internal switch and regulated voltage

source is possible with one external switch.

4) Low distortion.

5) Low noise.

FAbsolute maximum ratings (Ta = 25_C)

FRecommended operating conditions (Ta = 25_C)