LA70011 Ver la hoja de datos (PDF) - SANYO -> Panasonic

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LA70011

Recording/Playback Amplifier for VHS VCRs

SANYO -> Panasonic 

LA70011, 70011M

Synchronization of HA Switching Timing during Playback with H-SYNC Signal

During playback, the LA70011’s video circuits synchronize the HA-SW switching timing shown in the following figure

with the H-SYNC signal from pin 5. (Other EP/SP switching takes place in real time.)

Comparator Output: Pin 2

EP envelope > SP envelope: High (min. 4.0 V)

EP envelope < SP envelope: Low (max. 0.7 V)

H-SYNC Input: Pin 5

Pin 5 level - DC > 1.5 V: H-SYNC interval

Playback:

— Determines timing of HA switching (EP/SP)

— Determines timing of special playback

Recording:

— Serves as gate pulse for REC-AGC-AMP SYNC unit

REC/REC-MUTE/PB Switching: Pin 11

GND < pin 11 level - DC < 1.0 V: PB mode

1.0 V < pin 11 level - DC < 3.0 V: REC mode, REC-MUTE

3.0 V < pin 11 level - DC < 5.0 V: REC mode

No. 5710-8/11

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