FOA3251B1 Просмотр технического описания (PDF) - Infineon Technologies

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FOA3251B1

High Speed Clock and Data Recovery for Fiber Optic Applications

Infineon Technologies 

Vpfd

Kd2π

FOA3251B1

S1028C1

Functional Description

-4π

-2π

2π

4π υe

-Kd2π

ITD11418

Figure 3 PFD Characteristic

The VCO is a LC type with a center frequency of 2.5 GHz. The measured tuning range

is shown in Figure 4.

3

GHz

2.8

ITD11419

2.6

m25 Center Freq. [GHz]

2.4

20 Center Freq. [GHz]

85 Center Freq. [GHz]

2.2

2

0

-1

Figure 4 Tuning Range LC VCO

-2

Tuning Voltage

V -3

The delay line is programmable in 8 steps of about 50 ps. The clock signal is adjustable

over 1 period (400 as) and can be easily adapted to different applications.

Data Sheet

10

V1.0, 1999-08

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