NJM2073

- 7 -

Ver.2004-03-01

● Application for Voltage Gain Reduction ( BTL )

Fig.7 indicates the application example,Table2 shows recommended value of externally attaching parts.

Table2 Applicating purpose and Recommended Value of External Part

EXTERNAL

PARTS

APPLICATION PURPOSE

RECOMMENDED

VALUE

REMARKS

DC condition ground of plus input

Below about 10kΩ

Making noise when higher.

-

About 5kΩ

Temperature feature to be increased accordingly as in higher AV

value.

When lower,to be trended of Oscillation.

Releasing minus input in to DC

condition

-

Setting up low band Cut-off frequency (fL).

More higher,the rise time become longer.

Preventing Oscillation

About 0.02µF

The more higher in value,the high band THD,due to phase slipping

to be deteriorated.

When lower,to be trended of oscillation.

Stability of V

+

Preventing Oscillation

More

than

about

100µF

Inserting near around at V

Preventing Oscillation

More than 0.1µF

Inserting near around at V

r

Preventing Oscillation

To be examined at around pure resister Value of speaker load.

C

Preventing Oscillation

0.22µF

Fig.7 BTL Application