MAX9169ESE Ver la hoja de datos (PDF) - Maxim Integrated

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componentes Descripción

Fabricante

MAX9169ESE

4-Port LVDS and LVTTL-to-LVDS Repeaters

Maxim Integrated 

4-Port LVDS and LVTTL-to-LVDS Repeaters

tial impedance. Minimize the number of vias to further

prevent impedance discontinuities.

Avoid the use of unbalanced cables, such as ribbon

cable. Balanced cables, such as twisted pair, offer

superior signal quality and tend to generate less EMI

due to canceling effects. Balanced cables tend to pick

up noise as common mode, which is rejected by the

LVDS receiver.

Termination

The MAX9169/MAX9170 LVDS outputs are specified for

a 100Ω load but can drive 90Ω to 132Ω to accommo-

date various types of interconnect. The termination

resistor at the driven receiver should match the differ-

ential characteristic impedance of the interconnect and

be located close to the receiver input. Use a ±1% sur-

face-mount termination resistor.

Board Layout

A four-layer PC board with separate layers for power,

ground, and LVDS signals is recommended. Keep

LVTTL/LVCMOS signals separated from the LVDS sig-

nals to prevent crosstalk to the LVDS lines.

MAX9169

50Ω

IN+

PULSE

GENERATOR

IN-

50Ω

Figure 2. MAX9169 Output Offset Voltage Test Circuit

Test Circuits and Timing Diagrams

OUT1+

50Ω

10pF

VOS

50Ω

OUT1-

10pF

OUT4+

50Ω

10pF

VOS

50Ω

OUT4-

10pF

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