RECOMMENDED PRINTED CIRCUIT BOARD LAYOUT

Figures 2 through 6 show the recommended four-layer PC board layout that is optimized for the 20-pin MH-packaged LM4869

and associated external components. This circuit is designed for use with an external 5V supply and 3

Ω (or higher) speakers (or

load resistors).

This circuit board is easy to use. Apply 5V and ground to the board’s V

load resistors) between the board’s -OUTA and +OUTA and -OUTB and +OUTB pads. Apply balanced differential stereo input

signals to the input pins labeled ’-INA,’ ’+INA,’ ’-INB,’ and ’+INB.’

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FIGURE 2. Recommended MH PC Board Layout:

Component-Side Silkscreen

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FIGURE 3. Recommended MH PC Board Layout:

Component-Side Layout

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FIGURE 4. Recommended MH PC Board Layout:

Upper Inner-Layer Layout

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FIGURE 5. Recommended MH PC Board Layout:

Lower Inner-Layer Layout

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