ROHM Semiconductor BA8400FV
The BA8400FV is a CTL recording / playback amplifier developed for VHS VCRs. The playback amplifier has an AGC circuit that can handle large input signal fluctuations, and a recording / playback switching circuit is provided to allow high-speed switching.| Part No. | BA8400FV |
|---|---|
| Datasheet | BA8400FV Download |
| Manufacturer |  ROHM Semiconductor |
| Description | CTL recording / playback amplifier for VHS VCRs |
| Buy | Stock & Price |
APPLICATIONS
● VHS-format VCRsFEATURES
● 1) Can be operated off low power supply voltage (2.7V to 3.5V). 2) Playback amplifier with AGC. 3) Fast switching between recording and playback.●Block diagram MONI OUT HysBIAS FILTER 14 13 12 11 10 9 8 P RECPBGND 7 Ref R CTL – 6 BIAS AGC IN – AMP CTL + 5 P VCC DET REC AMP R P 1 2 SW 3 CTL OUT RECHPB RECIN GND 4 R AGC 1 Video ICs BA8400FV
●Pin descriptions Pin No. 1 Pin name CTL OUT (CTL pulse output) RECHPB (record / play switch) RECIN (REC CTL pulse input) GND CTL + (CTL head “+” input) CTL – (CTL head “–” input) RECPBGND BIAS (bias) IN – (playback amplifier input) Function CTL pulse output. High output level approx. VCC – 0.05V, IO = + 0.5mA Low output level approx. 0.05V, IO = – 0.5mA Switch input pin for the record / playback amplifiers. High input: REC mode Low input: PB mode Threshold voltage: approx. 1 / 2VCC CTL pulse input pin for recording. Threshold voltage: approx. 1 / 2VCC Power, REC / PB SW, CTL output buffer ground pin. When recording: CTL head positive-side recording current.
