LM8207 datasheet(21/22 Pages) NSC

Part #	LM8207

Description	TFT 18 Gamma Buffer VCOM Driver Voltage Reference

PDF	22 Pages

Scroll/Zoom	100%

Manufacturer	NSC [National Semiconductor (TI)]

Direct Link	http://www.national.com

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21 / 22 page

Application Section (Continued)

LAYOUT RECOMMENDATIONS

A proper layout is necessary for optimum performance of the

LM8207. A low impedance and clean ground plane is rec-

ommended. The traces from the V

SS pin to the ground plane

should be as short as possible. Decoupling capacitors

should be placed very close to the V

DD pin. Connections of

these decoupling capacitors to the ground plane should be

very short. An additional decoupling capacitor for OUT_V

REF

is recommended.

Due to the heavy current peaks and short transitions at the

COM node, traces from the output of the VCOM buffer should

be low impedance and as short as possible, to minimize both

voltage drops over the trace and unwanted EM distur-

bances.

Bottom View

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FIGURE 14. Layout of LM8207 Evaluation Board (Actual Size)

TOP View

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FIGURE 15. Layout of LM8207 Evaluation Board (Actual Size)

LM8207 Datasheet(PDF) 21 Page - National Semiconductor (TI)