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BA7182AS 데이터시트(PDF) 7 Page - Rohm |
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BA7182AS 데이터시트(HTML) 7 Page - Rohm |
7 / 9 page 7 Video ICs BA7182AS H 3.5 ~ VCC L — 0.0 ~ 1.2 DFF IN Ch2 (PRE IN2 7pin) Ch1 (PRE IN1 5pin) Control voltage VCTRL1 [V] Function Envelope detect Control pin Selected playback input Reset on rising edge •Control mode tables (1) DFF IN (pin 1) • Playback input selection (head switching) • Playback output envelope detection timing control (integrate and hold one frame) (2) H SYNC IN (pin 11) • Controls recording AGC detector block operation. Control pin Function AGC detect Control voltage VCTRL11 [V] H ON 2.7 ~ VCC L OFF 0.0 ~ 1.2 H SYNC (3) PB / EE / REC CTRL (pin 15) • Playback / recording mute / recording mode switching Control voltage VCTRL15 [V] Function Mode Control pin PB/EE/ REC H PB ON ON OFF OFF 3.8 ~ VCC M REC MUTE OFF OFF ON ON 2.2 ~ 2.8 L REC OFF OFF OFF ON 0.0 ~ 1.2 REC MUTE AT ENVE PRE AMP REC AMP ∗ Pin 15 is pulled up to VCC via a 33kΩ resistor. (4) EP / SP CTRL (pin 21) • Switching for the detector gain of the playback envelope detector. EP / SP H 3.5 ~ VCC L 0.0 ~ 1.2 ∗ Pin 21 is pulled up to VCC via a 50kΩ resistor. Typ. + 6dB Typ. Control voltage VCTRL21 [V] Control pin Function AT ENVE gain |
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