MAX3831 查看數據表（PDF） - Maxim Integrated

零件编号

产品描述 (功能)

生产厂家

MAX3831

+3.3V, 2.5Gbps, SDH/SONET, 4-Channel Interconnect Mux/Demux ICs with Clock Generator

Maxim Integrated 

+3.3V, 2.5Gbps, SDH/SONET, 4-Channel

Interconnect Mux/Demux ICs with Clock Generator

VCC

PECL

LEVELS

RT*

RT*

0.1µF 25Ω

SDI+

50Ω 50Ω

0.1µF

100Ω

25Ω

SDI-

MAX3831

MAX3832

*SELECT RT SUCH THAT THE CORRECT PECL COMMON-MODE LEVEL

IS ACHIEVED (TYPICAL PECL OUTPUT CURRENT = 14mA).

Figure 8. PECL-to-CML Interface

Layout Techniques

For best performance, use good high-frequency layout

techniques. Filter voltage supplies, keep ground con-

nections short, and use multiple vias where possible.

Use controlled-impedance transmission lines to inter-

face with the MAX3831/MAX3832 high-speed inputs

and outputs.

Place power-supply decoupling as close to VCC as

possible. To reduce feedthrough, take care to isolate

the input signals from the output signals.

VCC = 3.3V

VCC = 3.3V

PECL

OUTPUT

82Ω

SDI+

82Ω

82Ω

SDI-

82Ω

50Ω 50Ω

MAX3831

MAX3832

Figure 9. Direct Coupling of a PECL Output into the MAX3831/

MAX3832

______________________________________________________________________________________ 11

Share Link: