CDCE62005 datasheet(20/76 Pages) TI

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OUTPUT TO OUTPUT ISOLATION

Measurement Method

CDCE62005

SCAS862 – NOVEMBER 2008........................................................................................................................................................................................... www.ti.com

1. Connect output 2 to a spectrum analyzer. Disable Outputs 0, 1, 3, 4.

2. Measure spurious on Output 2.

3. Enable aggressor channels individually per Table 3.

4. Measure spurious on Output 2.

5. The difference between the spurious levels of Output 2 before and after enabling the aggressor channels

determine the output-to-output isolation performance recorded.

Table 3. Output to Output Isolation

M SPUR

Unit

The Output to Output Isolation was tested under following settings are 25°C

Output 2

Measured Channel

In LVPECL Signaling 15.5 MHz

–67

Output 2

Measured Channel

In LVPECL Signaling 93 MHz

–60

Output 2

Measured Channel

In LVPECL Signaling 930 MHz

–59

Output 0

Aggressor Channel

LVPECL 22.14 MHz

Output 1

Aggressor Channel

LVPECL 22.14 MHz

Output 3

Aggressor Channel

LVPECL 22.14 MHz

Output 4

Aggressor Channel

LVPECL 22.14 MHz

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