For product information and a complete list of distributors, please go to our web site: www.avagotech.com
Avago, Avago Technologies, and the A logo are trademarks of Avago Technologies in the United States and other countries.
Data subject to change. Copyright © 2005-2012 Avago Technologies. All rights reserved. Obsoletes AV01-0153EN
AV02-3571EN - June 11, 2012
Notes:
1. This is the maximum voltage that can be applied across the
Di erential Transmitter Data Inputs to prevent damage to the input
ESD protection circuit.
2. When component testing these products, do not short the receiver
Data or Signal Detect outputs directly to ground to avoid damage to
the part.
3. The outputs are terminated with 50 connected to V
CC
- 2 V.
4. The power supply current needed to operate the transmitter is
provided to di erential ECL circuitry. This circuitry maintains a nearly
constant current ow from the power supply. Constant current
operation helps to prevent unwanted electrical noise from being
generated and conducted or emitted to neighboring circuitry.
5. These optical power values are measured as follows:
The Beginning of Life (BOL) to the End of Life (EOL) optical power
degradation is typically 1.5 dB per the industry convention for
long wavelength LEDs. The actual degradation observed in Avago
Technologies’s 1300 nm LED products is < 1 dB, as speci ed in
this data sheet.
Over the speci ed operating voltage and temperature ranges.
With 25 MBd (12.5 MHz square-wave), input signal.
At the end of one meter of noted optical ber with cladding
modes removed.
The average power value can be converted to a peak power value by
adding 3 dB. Higher output optical power transmitters are available
on special request.
6. The Extinction Ratio is a measure of the modulation depth of the
optical signal. The data “0” output optical power is compared to the
data “1” peak output optical power and expressed as a percentage.
With the transmitter driven by a 12.5 MHz square-wave signal, the
average optical power is measured. The data “1” peak power is
then calculated by adding 3 dB to the measured average optical
power. The data “0” output optical power is found by measuring
the optical power when the transmitter is driven by a logic “0”
input. The extinction ratio is the ratio of the optical power at the “0”
level compared to the optical power at the “1” level expressed as a
percentage or in decibels.
7. This parameter complies with the requirements for the tradeo s
between center wave length, spectral width, and rise/fall times
shown in Figure 8.
8. The optical rise and fall times are measured from 10% to 90% when
the transmitter is driven by a 25 MBd (12.5 MHz squarewave) input
signal. This parameter complies with the requirements for the
tradeo s between center wavelength, spectral width, and rise/fall
times shown in Figure 8.
9. Deterministic Jitter is de ned as the combination of Duty Cycle
Distortion and Data Dependent Jitter. Deterministic Jitter is
measured with a test pattern consisting of repeating K28.5
(00111110101100000101) data bytes and evaluated per the method
in FC-PH Annex A.4.3.
10. Random Jitter is speci ed with a sequence of K28.7 (square wave
of alternating 5 ones and 5 zeros) data bytes and, for the receiver,
evaluated at a Bit- Error-Ratio (BER) of 1 x 10
-12
per the method in
FC-PH Annex A.4.4.
11. This speci cation is intended to indicate the performance of the
receiver when Input Optical Power signal characteristics are present
per the following de nitions. The Input Optical Power dynamic
range from the minimum level (with a window time-width) to the
maximum level is the range over which the receiver is guaranteed to
provide output data with a Bit-Error-Ratio (BER) better than or equal
to 1 x 10
-12
.
At the Beginning of Life (BOL).
Over the speci ed operation temperature and voltage ranges.
Input symbol pattern is a 266 MBd, 2
7
- 1 pseudo-random bit
stream data pattern.
Receiver data window time-width is ± 0.94 ns or greater and
centered at mid-symbol. This data window time width is
calculated to simulate the e ect of worst-case input jitter per
FCPH Annex J and clock recovery sampling position in order to
insure good operation with the various FC-0 receiver circuits.
The maximum total jitter added by the receiver and the maximum
total jitter presented to the clock recovery circuit comply with the
maximum limits listed in Annex J, but the allocations of the Rx
added jitter between deterministic jitter and random jitter are
di erent than in Annex J.
12. All conditions of Note 11 apply except that the measurement is
made at the center of the symbol with no window time-width.
13. This value is measured during the transition from low to high levels
of input optical power.
14. This value is measured during the transition from high to low levels
of input optical power.
15. These values are measured with the outputs terminated into 50
connected to V
CC
- 2 V and an input optical power level of -14 dBm
average.
16. The power dissipation value is the power dissipated in the
transmitter or the receiver itself. Power dissipation is calculated
as the sum of the products of supply voltage and supply current,
minus the sum of the products of the output voltages and currents.
17. These values are measured with respect to V
CC
with the output
terminated into 50 connected to V
CC
- 2 V.
18. The output rise and fall times are measured between 20% and 80%
levels with the output connected to V
CC
- 2 V through 50 .
19. The Signal Detect output shall be asserted, logic-high (V
OH
), within
100 s after a step increase of the Input Optical Power.
20. Signal Detect output shall be de-asserted, logic-low (V
OL
), within
350 s after a step decrease in the Input Optical Power.
21. This value is measured with an output load R
L
= 10 k.
