AS1154 Ver la hoja de datos (PDF) - austriamicrosystems AG

Número de pieza

componentes Descripción

Fabricante

AS1154

Single/Dual LVDS Driver

austriamicrosystems AG 

AS1156/AS1154

Data Sheet - Applications

Board Layout

The device should be placed as close to the interface connector as possible to minimize LVDS trace length.

„ Keep the LVDS and any other digital signals separated from each other to reduce crosstalk.

„ Use a four-layer PC board that provides separate power, ground, LVDS signals, and input signals.

„ Isolate the input LVDS signals from each other and the output LVCMOS/LVTTL signals from each other to prevent

coupling.

„ Separate the input LVDS signals from the output signals planes with the power and ground planes for best results.

Figure 20. Driver Propagation Delay and Transition Time Waveforms

INx

OUTx-

OUTx+

1.5V

tPLHD

0 Differential

1.5V

tPHLD

0

VOH

VOL

20%

80%

0

tTLH

80%

VDIFF = (VOUTx+) - (VOUTx-)

00

20%

tTHL

Figure 21. Driver Propagation Delay and Transition Time Test Circuit

Generator

50Ω

OUTx+

CL

RL

OUTx-

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Revision 1.01

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