STM1E-SFPxx 155Mbps Copper Transceiver

Final Datasheet

STM1E-SFPxx Datasheet

- 7 -

August 2008 v2-2

TRANSMITTER SPECIFICATIONS FOR CMI (COAX) INTERFACE

Bit Rate: 155.52Mbits/s

± 20ppm

Line Code: Coded Mark Inversion (CMI)

Relevant Specification: ITU-T G.703, ANSI T1.102, Telcordia GR-253-CORE

With the coaxial output port driving a 75

Ω load, the output pulses conform to the templates in ITU-T G.703 and

G.783. These specifications are tested during production test.

PARAMETER

CONDITION

MIN

NOM

MAX

UNIT

Peak-to-peak Output Voltage

Template, steady state

0.9

1.1

V

Rise/ Fall Time

10-90%

2

ns

Negative Transitions

-0.1

0.1

Positive Transitions at Interval

Boundaries

-0.5

0.5

Transition Timing Tolerance

Positive Transitions at mid-

interval

-0.35

0.35

Ns

Return Loss

7MHz to 240MHz

15

dB

TRANSMITTER OUTPUT JITTER

The transmit jitter specification ensures compliance with ITU-T G.813, G.823, G.825, G.958 and Telcordia

GR-253-CORE for STS-3/STM-1. Transmit output jitter is not tested during production test.

PARAMETER

CONDITION

MIN

NOM

MAX

UNIT

Transmitter Output Jitter

200 Hz to 3.5 MHz, measured

with respect to CKREF for 60s

0.055

0.075

UIpp

Transmitter

Output

Jitter

Detector

Measured Jitter

Amplitude

f1

f2

20dB/decade