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LAG640D

IC for Multifunction Telephones

Mitsumi 

MITSUMI

Additional application example 1

(SWR circuit not used)

IC for Multifunction Telephones LAG640

Even when a 5V external voltage can be supplied, an addition voltage of 13 to 45V must be applied to

pins 3 and 4 in order to obtain an internal biased power supply of 7.4V.

Additional application example 2

(Speaker amp not used)

In order to prevent abnormal oscillation of the amplification circuit, a 5 V power supply must be

connected to pin 15 to halt amplification functions.

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