lm4869mh National Semiconductor Corporation, lm4869mh Datasheet - Page 18

• Manufacturer Part Number: lm4869mh
• Description: 1.9w Differential Input, Btl Output Stereo Audio Amplifier With Selectable Gain And Shutdown
• Manufacturer: National Semiconductor Corporation

www.national.com
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 3Ω (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.’
FIGURE 2. Recommended MH PC Board Layout:
FIGURE 3. Recommended MH PC Board Layout:
Component-Side Silkscreen
Component-Side Layout
200428D7
200428D8
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FIGURE 4. Recommended MH PC Board Layout:
FIGURE 5. Recommended MH PC Board Layout:
and GND terminals, respectively. Connect speakers (or
Lower Inner-Layer Layout
Upper Inner-Layer Layout
200428D9
200428E0