Features and Usage Notes

1.

Calculated as follows:

However, the following must be noted:

rejection.

b) Oscillation stability requires, use at 40 dB or less to be avoided.

2.

Pin 9 is intended for standby. It is used in conjunction with power supply pin 4. However, it should be noted that when

power supply pin 9 and pin 4 are used for separate systems, the output power is affected by the pin 9 supply voltage.

3.

It is recommendable to use no input capacitor. However when rubbing noise generated by the volume control is offencive to

the ear, an input capacitor must be inserted.

4.

Extreme caution must be exercised when the IC is used in the vincity of the maximum ratings, since even a slight variation

in conditions may cause the maximum ratings to be exceeded, thereby leading to breakdown.

5.

When making the board, refer to the sample printed circuit pattern. No feedback loop must be formed between input and

output. Thick and short wiring is required so that no common resistance exists between the preamplifier GND and power

amplifier GND.

6.

approximately 4.5 V. A capacitor of 470 µF is inserted against pop noise.

Proper Cares in Mounting a Radiator Fin

1.

The tightening torque should be in a range from 4 to 6 kg.cm.

2.

The spacing between the screw holes of the radiator fin must match the spacing between the screw holes of the IC. With case

outline dimensions L and R referred to, the screws must be tightened with the distance between them as close to each other

as possible.

3.

The screws to be used must have a head equivalent to the one of truss machine screw or binder machine screw defined by

JIS. Washers must also be used to protect the IC case.

4.

No foreign matter such as cutting particles should exist between heat sink and radiator fin. When applying grease on the

junction surface, it must be applied uniformly on the whole surface.

5.

IC lead pins should be soldered to the printed circuit board after the radiator fin is mounted on the IC.

LA4598

No.4087-8/9