SY88923V(2000) データシートの表示（PDF） - Micrel

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SY88923V
(Rev.:2000)

5V/3.3V 2.5Gbps HIGH-SPEED LIMITING POST AMPLIFIER

Micrel 

Micrel

SY88923V

DESIGN PROCEDURE

Output Termination

The SY88923V outputs must be terminated with a 50Ω

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

Layout and PCB Design

Since the SY88923V 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 SY88923V 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.

0.1µF

0.1µF

DIN+

DIN–

50Ω

0.1µF

50Ω

VREF

VCC

R1

R2

LOSLVL

VREF

Figure 2. Differential Input Configuration

Figure 3. LOSLVL Circuit

NOTES:

R2 × 1.32V

LOSLVL = VCC -1.32V + R1 + R2

R1 + R2 ≥ 2.6kΩ

PRODUCT ORDERING CODE

Ordering

Code

SY88923VKC

SY88923VKCTR

Package

Type

K10-1

K10-1

Operating

Range

Commercial

Commercial

4

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