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Optical disc ICs

BA6392FP

This can be increased by inserting a capacitor between

(2)

CH4 driver (spindle driver)

Pins 23 and 25 are shorted inside the IC. Bias amplitudes

are the primary type of inputs assumed. The level shift

circuit converts the pre-stage amplifier output (centered

on the bias level and impressed on pins 23 and 25) to

level shift circuit’s output is BTL-output from the buffer

amplifier.

Because of the high input impedance, the IC is designed

to accommodate a filter comprising attached resistors

and capacitors.

FOperation notes

(1)

The BA6392FP has an internal thermal shutdown

circuit. Output current is muted when the chip tempera-

ture exceeds 180

_C (typically).

(2)

The output current can also be muted by lowering

the mute pin (pin 15) voltage below 0.5V.

(3)

All four driver output channels are muted during

thermal shutdown, muting and a drop in bias pin voltage.

No other components are muted.

(Example) For secondary filters