SY88903 Ver la hoja de datos (PDF) - Micrel

Número de pieza

componentes Descripción

Fabricante

SY88903

1.25Gbps HIGH-SPEED LIMITING POST AMPLIFIER

Micrel 

Micrel, Inc.

SY88903

APPLICATION INFORMATION

Output Termination

The SY88903 outputs must be terminated with a 50Ω

load to VCC – 2V (or Thevenin equivalent).

Layout and PCB Design

Since the SY88903 is a high-frequency component,

performance can largely be determined by board layout

and design. A common problem with high-gain amplifiers is

feedback from the large swing outputs to the input via the

power supply.

The SY88903 ground pin should be connected to the

circuit board ground. Use multiple PCB vias close to the

part to connect to ground. Avoid long, inductive runs which

can degrade performance.

NOTES:

Resistor Divider = R2/ (R1 + R2)

R1 + R2 ≥ 5kΩ

VCC

0.1µF

0.1µF

DIN+

DIN–

0.1µF

VREF

R1

LOSLVL

R2

VREF

Figure 3. LOSLVL Circut

Figure 2. Differential Input Configuration

M9999-061907

hbwhelp@micrel.com or (408) 955-1690

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