Video ICs
VCR Hi-Fi audio signal REC / PB amplifier with flying-erase oscillator
BA7745FS
The BA7745FS has the recording and playback
amplifiers required for Hi-Fi VCR signal processing, and also contains a flying-erase oscillator.
The recording system uses a constant-current amplifeir with AGC to eliminate the need to adjust the recording current, and ensure stable operation as the head wears.
The IC also features REC MUTE and OVER REC functions .
The playback system has a high-gain preamplifier, a low-offset head switch, a VCA and an EP-gain amplifier.
The flying-erase oscillator has low 2nd and 3rd harmonic distortion, and when connected to an external driver large output current can be ...