MM1192 Просмотр технического описания (PDF) - Mitsumi

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MM1192

HBS-Compatible Driver and Receiver

Mitsumi 

MITSUMI

Circuit Diagram

HBS-Compatible Driver and Receiver MM1192

Note 1: The peripheral components in the block diagram are the constants for Ftransmit=10kHz. If the

frequency is low, larger values should be chosen for the coupling capacitors between the receive and

transmit pins and the bus line and for the capacitor connecting pins 3 and 4.

Note 2: A block diagram is shown for an example application in which an external transistor is used; but

depending on system conditions the internal transistor may be used, and no external transistor is

needed. In such cases pins 7 and 8 are left open, a 1Ω resistance is inserted between pins 10 and 12,

and a 1Ω resistance is inserted between pins 9 and 14.

When the load resistance (36Ω) is to be varied during use, these resistances (1Ω) should be changed

according to the load resistance. If these resistances are omitted, oscillation may occur at low volume

levels.

Measuring Circuit

1. No external transistor

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