LM1896 datasheet(7/10 Pages) NSC

Numer części	LM1896

Szczegółowy opis	LM1896/LM2896 Dual Audio Power Amplifier

PDF	10 Pages

Scroll/Zoom	100%

Producent	NSC [National Semiconductor (TI)]

Strona internetowa	http://www.national.com

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7 / 10 page

Application Hints (Continued)

TLH7920 – 10

Figure 4 Bridge Amplifier Connection

Printed Circuit Layout

Printed Circuit Board Layout

Figure 5 and Figure 6 show printed circuit board layouts for

the LM1896 and LM2896 The circuits are wired as stereo

amplifiers The signal source ground should return to the

input ground shown on the boards Returning the loads to

power supply ground through a separate wire will keep the

THD at its lowest value The inputs should be terminated in

less than 50 kX to prevent an input-output oscillation This

oscillation is dependent on the gain and the proximity of the

bridge elements RB and CB to the (a) input If the bridge

mode is not used do not insert RB CB into the PCB

To wire the amplifer into the bridge configuration short the

capacitor on pin 7 (pin 1 of the LM1896) to ground Connect

together the nodes labeled BRIDGE and drive the capacitor

connected to pin 5 (pin 14 of the LM1896)

TLH7920 – 11

FIGURE 5 Printed Circuit Board Layout for the LM1896

LM1896 Arkusz danych(PDF) 7 Page - National Semiconductor (TI)