VSC7440 datasheet(403/444 Pages) MICROSEMI

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Electrical Specifications

VMDS-10492 VSC7440 Datasheet Revision 4.2

386

The specifications in the following table correspond to the 10G receiver input, SFI point C and C”, Host.

Post-channel fixed noise source

2.14

mVRMS RMS voltage measured over one symbol

period at the output of module

compliance board (MCB) in a 12 GHz

bandwidth. Source for QSQ should be

disabled during this calibration. See

SFF-8431 section E.3.1.

Differential voltage modulation amplitude

VMA

180

Square pattern with eight 1s and eight 0s.

Table 302 •

10G Receiver Input (SFI Point C and C”, Host)

Parameter

Symbol

Minimum

Maximum

Unit

Condition

99% jitter

99%JIT_P-P

0.42

Calibrated and measured at

point C”, as specified in

SFF-8431 revision 4.1

Pulse width shrinkage jitter

DDPWSJIT_P-P

0.3

Calibrated and measured at

point C”, as specified in

SFF-8431 revision 4.1

Total jitter tolerance

TOLJIT_P-P

0.70

Calibrated and measured at

point C”, as specified in

SFF-8431 revision 4.1

Eye mask X1

0.35

Calibrated and measured at

point C”, as specified in

SFF-8431 revision 4.1

Eye mask Y1

150

Calibrated and measured at

point C”, as specified in

SFF-8431 revision 4.1

Eye mask Y2

425

Calibrated and measured at

point C”, as specified in

SFF-8431 revision 4.1

Wideband SyncE jitter tolerance

WJT

2488

UIP-P 10 Hz to 12.1 Hz.

Measured according to ITU-T

G.8262 section 9.2.

Wideband SyncE jitter tolerance

WJT

30000/ƒ

UIP-P 12.1 Hz to 20 kHz (ƒ).

Measured according to ITU-T

G.8262 section 9.2.

Wideband SyncE jitter tolerance

WJT

1.5

UIP-P 20 kHz to 40 kHz.

Measured according to ITU-T

G.8262 section 9.2.

Differential input return loss

SDD11

–12

0.01 GHz to 2 GHz

Differential input return loss

SDD11

See note 1

Return loss value is given by the equation SDD11(dB) <–6.68 + 12.1 log10(ƒ/5.5 GHz).

2 GHz to 11 GHz

Differential to common-mode

conversion2

The test set common-mode reference impedance is 25

Ω.

SCD11

–10

0.1 GHz to 11.1 GHz

Table 301 •

10G Receiver Input (SFI Point C, Host) for Direct Attach Copper (continued)

Parameter

Symbol Typical

Unit

Condition

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