BA6397 Rohm, BA6397 Datasheet - Page 7

• Manufacturer Part Number: BA6397
• Description: 4-channel BTL driver for CD players
• Manufacturer: Rohm

FOperation notes
(1)
circuit. Output current is muted when the chip tempera-
ture exceeds 175_C (typically).
(2)
below 0.5V, the output current will be muted. Pin 7 should
be pulled up above 2.0V during normal use.
(3)
1.4V (typically). Make sure it stays above 1.6V during
normal use.
(4)
operations or a drop in the bias pin voltage. In each case,
only the drivers are muted. During muting, the output pins
remain at the internal bias voltage, roughly (V
FElectrical characteristic curves
338
Optical disc ICs
The BA6397FP has an internal thermal shutdown
If the mute pin (pin 7) voltage is opened or lowered
The bias pin (pin 23) is muted when lowered below
Muting occurs during thermal shutdown, mute-on
CC
–V
F
) / 2.
(5)
ture coefficient of roughly 2000ppm / degree, and so
when changing the gain using an attached resistor, gain
will also change at a rate of roughly 2000ppm / degree.
There is virtually no gain variation due to temperature
when using the internal input resistor.
(6)
tor to the power supply, at the base of the IC.
(7)
ternal GND, but should also be connected to an external
ground.
(8)
GND also serves to prevent oscillation of the IC, so select
one with good temperature characteristics.
The internal input resistor has a positive tempera-
Be sure to connect the IC to a 0.1 F bypass capaci-
The radiating fin is connected to the package’s in-
The capacitor between regulator output (pin 6) and
BA6397FP