HFBR-5302 查看數據表（PDF） - HP => Agilent Technologies
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HFBR-5302
HP => Agilent Technologies
HFBR-5302 Datasheet PDF : 12 Pages
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Notes:
1. This is the maximum voltage that
can be applied across the
Differential 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
Ω connected to VCC - 2 V.
4. The power supply current needed to
operate the transmitter is provided
to differential ECL circuitry. This
circuitry maintains a nearly constant
current flow 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 Hewlett-
Packard’s 1300 nm LED products
is < 1 dB as specified in this data
sheet.
• Over the specified operating
voltage and temperature ranges.
• With 25 MBd (12.5 MHz square-
wave) input signal.
• At the end of one meter of noted
optical fiber 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 3dB to the measured average
optical power. The data “0” output
optical power is found by measuring
the optical power when the transmit-
ter is driven by a logic “0” input. The
extinction ratio is the ratio of the
optical power at the “0” level com-
pared to the optical power at the “1”
level expressed as a percentage or in
decibels.
7. This parameter complies with the
requirements for the tradeoffs
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 square-wave) input
signal. This parameter complies with
the requirements for the tradeoffs
between center wavelength, spectral
width, and rise/fall times shown in
Figure 8.
8.a. The optical rise and fall times are
measured from 10% to 90% when
the transmitter is driven by a 25
MBd (12.5 MHz square-wave) input
signal.
9. Deterministic Jitter is defined 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 specified with a
sequence of K28.7 (square wave of
alternating 5 ones and 5 zeros) data
bytes and evaluated at a Bit Error
Ratio (BER) of 1 x 10-12 per the
method in FC-PH Annex A.4.4.
11. This specification is intended to
indicate the performance of the
receiver section of the transceiver
when Input Optical Power signal
characteristics are present per the
following definitions. 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
specified to provide output data with
a Bit Error Rate (BER) better than
or equal to 1 x 10-12.
• At the Beginning of Life (BOL)
• Over the specified operating tem-
perature and voltage ranges.
• Input is a 266 MBd, 27 - 1
psuedorandom 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 effect of worst case
input jitter per FC-PH Annex J
and clock recovery sampling
position in order to insure good
operation with the various FC-0
receiver circuits.
• The integral transmitter is operat-
ing with a 266 MBd, 133 MHz
square-wave, input signal to simu-
late any cross-talk present
between the transmitter and
receiver sections of the
transceiver.
• 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
different than in Annex J.
11a. Same as Note 11 except:
• The receiver input signal is a 133
MBd, 27 - 1 psuedorandom data
patter.
• The integral transmitter is operat-
ing with a 133 MBd, 66.5 MHz
square wave.
• The receiver data window width
is ± 1.73 ns.
• The receiver added jitter maxi-
mums and allocations are
identical to the limits listed 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.
12a. All conditions of Note 11a 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 Ω
connected to VCC - 2 V and an input
optical power level of -14 dBm
average.
16. The power dissipation value is the
power dissipated in the receiver
itself. Power dissipation is calculated
as the sum of the products of supply
voltage and supply current, minus
225
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