Optical disc ICs
(4) DET block
BA6386K
When defect is high, the bottom hold (long) charging cur-
rent is 50µA. The scratch depth (VSC) can be adjusted by
changing the resistance at pin 9.
1.2
VSC =
4k
R9)200
The peak hold voltage will not go below (GND ) 0.9V)
and the bottom hold voltage will not go below (VCC *
0.9V).
523