294

Optical disc ICs

BA6196FP

FMeasurement circuit switch table

FOperation notes

(1)

The BA6196FP has an internal shutdown circuit.

The output current is muted when the chip temperature

exceeds 175

_C (typically).

(2)

If the mute pin (pin 7) voltage is opened or lowered

below 0.5V, the output current will be muted. The mute

pin should be pulled up above 2.0V during normal use.

(3)

The bias pin (pin 23) is muted when lowered below

1.4V (typically). Make sure it stays above 1.6V during

normal use.

(4)

Muting occurs during thermal shutdown, mute-on

operations or a drop in the bias pin voltage. In each case,

only the drivers are muted. During muting, the output pins

(5)

The internal circuits turn off when the supply volt-

age drops below 4.5V (typically), and turn on again when

it rises above 4.7V (typically).

(6)

Be sure to connect the IC to a 0.1

µF bypass capaci-

tor to the power supply, at the base of the IC.

(7)

The radiating fin is connected to the package’s in-

ternal GND, but should also be connected to an external

ground.

(8)

The capacitor between regulator output (pin 6) and

GND also serves to prevent oscillation of the IC, so select

one with good temperature characteristics.