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BA7746FS Datasheet(PDF) 4 Page - Rohm |
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BA7746FS Datasheet(HTML) 4 Page - Rohm |
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4 / 12 page  4 Video ICs BA7746S / BA7746FS 7VCC — 8— 9— 10 REC: 2.9V PB: 2.9V 11 REC: 1.4V PB: 0.5V 12 — Pin No. Pin name, function and remarks Voltage Circuit diagram 〈VCC〉 • Power supply for anything other than REC + B. 〈REC MUTE CTRL〉 • REC MUTE control. • In REC MUTE mode, the recording amplifier output is stopped. • REC: L, REC MUTE: H. • Do not leave open circuit. 〈OVER REC CTRL〉 • OVER REC control. • In OVER REC mode, the recording current is set to + 2dB (Typ.). • Do not leave open circuit. 〈REC MIX IN〉 • Recording amplifier input. 〈REC NF〉 • Recording amplifier feedback. • Connect the GND of a decoupling capacitor to main GND (pin 16) to improve common-mode distortion. 〈REC / PB CTRL〉 • REC / PB control pin. • Use of an RC circuit time constant to slow the rise of the control signal reduces noise spikes during switching. • Do not leave open circuit. MUTE REC 30k OVER NORMAL 30k 10k 10k 10.2k 240 1.04k 30k |
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