BA5984FP データシートの表示（PDF） - ROHM Semiconductor

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BA5984FP

Power Driver For CD Players

ROHM Semiconductor 

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(15) About earth wiring patterns

When a small signal GND and a large current GND are provided, it is recommended that the large

current GND pattern and the small signal GND pattern should be separated and grounded at a single

point of the reference point of the set in order to prevent the voltage of the small signal GND from being

affected by a voltage change caused by the resistance of the pattern wiring and the large current.

Make sure that the GND wiring patterns of the external components will not change, too.

(16) This IC is a monolithic IC which has a P+ isolations and P substrate to isolate elements each other.

This P layer and an N layer in each element form a PN junction to construct various parasitic elements.

Due to the IC structure, the parasitic elements are inevitably created by the potential relationship.

Activation of the parasitic elements can cause interference between circuits and may result in a

malfunction or, consequently, a fatal damage. Therefore, make sure that the IC must not be used

under conditions that may activate the parasitic elements, for example, applying the lower voltage than

the ground level (GND, P substrate) to the input terminals.

In addition, do not apply the voltage to input terminals without applying the power supply voltage to the

IC. Also while applying the power supply voltage, the voltage of each input terminal must not be over

the power supply voltage, or within the guaranteed values in the electric characteristics.

REV. A

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