HFCT-5944G [ETC]
Optoelectronic ; 光电\n
| 型号： | HFCT-5944G |
| 厂家： | 
ETC |
| 描述： | Optoelectronic
|
| 文件： | 总18页 (文件大小：269K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Agilent HFCT-5944xxx Single Mode SFF
Transceivers for SONET OC-48/SDH
STM-16 Multirate Operation
Part of the Agilent METRAK family
Data Sheet
Features
•
Multirate operation from
125 Mb/s to 2.7 Gb/s
•
HFCT-5944L/AL:
Links of 2 km with 9/125 µm
single mode fiber (SMF)
HFCT-5944TL/ATL:
Links of 15 km with 9/125 µm
single mode fiber (SMF)
Multisourced 2 x 10 package style
with LC receptacle
•
•
Description
The HFCT-5944xxx are high
performance, cost effective
modules for serial optical data
communications applications
that range from 125 Mb/s to 2.7
Gb/s. They are designed to
provide SONET/SDH compliant
links at 2488 Mb/s for both short
and intermediate reach links.
For each device the receiver
section uses an MOVPE grown
planar SEDET PIN
photodetector for low dark
current and excellent
responsivity.
•
•
Single +3.3 V power supply
Temperature range:
HFCT-5944L/G:
0°C to +70°C
A positive ECL logic interface
simplifies interface to external
circuitry.
HFCT-5944TL/TG:
0°C to +70°C
HFCT-5944AL/AG: -40°C to +85°C
HFCT-5944ATL/ATG:
-20°C to +85°C
Wave solder and aqueous wash
process compatible
Manufactured in an ISO9002
certified facility
Fully Class 1 CDRH/IEC 825
compliant
Compliant with ITU-T G.957
STM-16, I-16 and S-16.1 Optical
Interfaces
The modules are designed for
single mode fiber and operate at
a nominal wavelength of 1300
nm. They incorporate high
The transceivers are supplied in
the new industry standard 2 x
10 DIP style package with the LC
fiber connector interface and is
footprint compatible with SFF
Multi Source Agreement (MSA).
•
•
•
•
performance, reliable, long
wavelength optical devices and
proven circuit technology to give
long life and consistent service.
The transmitter section of the
HFCT-5944L/AL/G/AG
incorporates a 1300 nm Fabry
Perot (FP) laser. The transmitter
in the HFCT-5944TL/ATL/TG/
ATG uses a Distributed
•
•
HFCT-5944L/AL/TL/ATL:
metalized nose and EMI shield
HFCT-5944G/AG/TG/ATG:
no metalization and no EMI shield
Feedback (DFB) Laser packaged
in conjunction with an optical
isolator for excellent back
reflection performance. The
transmitter has full IEC 825 and
CDRH Class 1 eye safety.
Applications
•
SONET/SDH equipment
interconnect
•
Multirate Client Interface on
Metro Gateways and Edge
Switches
Functional Description
Receiver Section
Noise Immunity
Design
The receiver includes internal
circuit components to filter
power supply noise. However
under some conditions of EMI
and power supply noise,
external power supply filtering
may be necessary (see
Figure 1 also shows a filter
function which limits the
bandwidth of the preamp output
signal. The filter is designed to
bandlimit the preamp output
noise and thus improve the
receiver sensitivity.
The receiver section for the
HFCT-5944xxx contains an
InGaAs/InP photo detector and
a preamplifier mounted in an
optical subassembly. This optical
subassembly is coupled to a
postamp/decision circuit on a
circuit board. The design of the
optical assembly is such that it
provides better than 27 dB
Optical Return Loss (ORL).
Application Section).
These components will reduce
the sensitivity of the receiver as
the signal bit rate is increased
above 2.7 Gb/s.
The Signal Detect Circuit
The signal detect circuit works
by sensing the peak level of the
received signal and comparing
this level to a reference. The SD
output is low voltage TTL.
The postamplifier is ac coupled
to the preamplifier as illustrated
in Figure 1. The coupling
capacitors are large enough to
pass the SONET/SDH test
pattern at 155 Mb/s, 622 Mb/s
and 2488 Mb/s without
As an optional feature the device
also incorporates a
photodetector bias circuit. The
circuit works by providing a
mirrored output of the bias
current within the photodiode.
This output must be connected
significant distortion or
to V and can be monitored by
CC
performance penalty. For
multirate applications the
sensitivity will meet the
connecting through a series
resistor (see Application
Section).
maximum SONET specification
for OC48 across all datarates (-
19 dBm), also for DC balanced
codes, e.g. 8B/10B. For codes
which have a significantly lower
frequency content, jitter and
pulse distortion could be
degraded.
PHOTODETECTOR
BIAS
DATA OUT
FILTER
TRANS-
IMPEDANCE
PRE-
AMPLIFIER
PECL
OUTPUT
BUFFER
AMPLIFIER
DATA OUT
GND
TTL
OUTPUT
BUFFER
SIGNAL
DETECT
CIRCUIT
SD
Figure 1. Receiver Block Diagram
2
Functional Description
Transmitter Section
Design
A schematic diagram for the
The transmitters also include
transmitter is shown in Figure 2. monitor circuitry for both the
The HFCT-5944L/AL/G/AG laser diode bias current and
incorporates an FP laser and the laser diode optical power.
HFCT-5944TL/TG/ATL/ATG
uses a DFB packaged in
conjunction with an optical
isolator. Both packages have
been designed to be compliant
with IEC 825 eye safety
requirements under any single
fault condition and CDRH under
normal operating conditions.
The optical output is controlled
by a custom IC that detects the
laser output via the monitor
photodiode. This IC provides
both dc and ac current drive to
the laser to ensure correct
modulation, eye diagram and
extinction ratio over
temperature, supply voltage and
operating life.
FP or
DFB
PHOTODIODE
(rear facet monitor)
LASER
DATA
DATA
LASER
MODULATOR
PECL
INPUT
LASER BIAS
DRIVER
BMON(+)
BMON(-)
LASER BIAS
CONTROL
PMON(+)
PMON(-)
Figure 2. Simplified Transmitter Schematic
3
Package
The electrical subassemblies
consist of high volume
multilayer printed circuit boards protective shield. The case is
on which the IC and various
surface-mounted passive circuit
elements are attached.
strength. The housing is then
encased with a metal EMI
The overall package concept for
the device consists of the
following basic elements; two
optical subassemblies, two
electrical subassemblies and the
housing as illustrated in the
block diagram in Figure 3.
signal ground and we
recommend soldering the four
ground tabs to host card signal
ground.
The receiver electrical
subassembly includes an
internal shield for the electrical
and optical subassembly to
ensure high immunity to
external EMI fields.
The pcb’s for the two electrical
subassemblies both carry the
signal pins that exit from the
bottom of the transceiver. The
solder posts are fastened into
the molding of the device and
are designed to provide the
mechanical strength required to
withstand the loads imposed on
the transceiver by mating with
the LC connectored fiber cables.
Although they are not connected
electrically to the transceiver, it
is recommended to connect
them to chassis ground.
The package outline drawing
and pin out are shown in
Figures 4 and 5. The details of
this package outline and pin out
are compliant with the multi-
source definition of the 2 x 10
DIP.
The optical subassemblies are
each attached to their respective
transmit or receive electrical
subassemblies. These two units
are then fitted within the outer
housing of the transceiver that is
molded of filled nonconductive
In combination witht he
metalized nose segment of the
package a metallic nose clip
provides connection to chassis
ground for both EMI and thermal plastic to provide mechanical
dissipation.
RX SUPPLY
*
PHOTO DETECTOR
BIAS
DATA OUT
PIN PHOTODIODE
PREAMPLIFIER
SUBASSEMBLY
QUANTIZER IC
DATA OUT
RX GROUND
SIGNAL
DETECT
LC
TX GROUND
RECEPTACLE
DATA IN
DATA IN
LASER BIAS
MONITORING
LASER
OPTICAL
SUBASSEMBLY
Tx DISABLE
LASER DRIVER
AND CONTROL
CIRCUIT
B
B
MON(+)
MON(-)
LASER DIODE
OUTPUT POWER
MONITORING
P
P
MON(+)
MON(-)
TX SUPPLY
CASE
* NOSE CLIP PROVIDES CONNECTION TO CHASSIS GROUND FOR BOTH EMI AND THERMAL DISSIPATION.
Figure 3. Block Diagram
4
+ 0
- 0.2
+0
13.59
0.535
13.59
(0.535)
MAX
15.0 0.2
(0.591 0.008)
(
)
-0.008
TOP VIEW
48.2
(1.898)
6.25
(0.246)
9.8
(0.386)
MAX
10.8 0.2
9.6 0.2
(0.425 0.008)(0.378 0.008)
4.06
(0.16)
3.81
(0.15)
1
Ø 1.07
0.25
(0.01)
10.16
(0.4)
1
(0.039)
(0.042)
20 x 0.5
(0.02)
(0.039)
19.5 0.3
(0.768 0.012)
1.78
(0.07)
BACK VIEW
FRONT VIEW
SIDE VIEW
48.2
(1.898)
9.8
(0.386)
MAX
G MODULE - NO NOSE METALIZATION
3.81
(0.15)
Ø 1.07
(0.042)
0.25
(0.01)
1
20 x 0.5
(0.02)
(0.039)
19.5 0.3
(0.768 0.012)
1.78
(0.07)
SIDE VIEW
20 x 0.25 (PIN THICKNESS)
(0.01)
NOTE: END OF PINS
CHAMFERED
BOTTOM VIEW
DIMENSIONS IN MILLIMETERS (INCHES)
DIMENSIONS SHOWN ARE NOMINAL. ALL DIMENSIONS MEET THE MAXIMUM PACKAGE OUTLINE DRAWING IN THE SFF MSA.
Figure 4. HFCT-5944xxx Package Outline Drawing
5
Connection Diagram
RX
TX
Mounting Studs/
Solder Posts
Package
Grounding Tabs
o
o
PHOTO DETECTOR BIAS
RECEIVER SIGNAL GROUND
RECEIVER SIGNAL GROUND
NOT CONNECTED
1
2
3
4
5
6
7
8
9
20
19
18
17
16
15
14
13
12
11
LASER DIODE OPTICAL POWER MONITOR - POSITIVE END
LASER DIODE OPTICAL POWER MONITOR - NEGATIVE END
LASER DIODE BIAS CURRENT MONITOR - POSITIVE END
LASER DIODE BIAS CURRENT MONITOR - NEGATIVE END
TRANSMITTER SIGNAL GROUND
TRANSMITTER DATA IN BAR
TRANSMITTER DATA IN
TRANSMITTER DISABLE
TRANSMITTER SIGNAL GROUND
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
Top
View
NOT CONNECTED
RECEIVER SIGNAL GROUND
RECEIVER POWER SUPPLY
SIGNAL DETECT
RECEIVER DATA OUTPUT BAR
RECEIVER DATA OUTPUT
10
TRANSMITTER POWER SUPPLY
Figure 5. Pin Out Diagram (Top View)
Pin Descriptions:
Pin 1 Photo Detector Bias, VpdR:
This pin enables monitoring of
photo detector bias current. The
pin should either be connected
Pin 9 Receiver Data Out Bar RD-:
PECL logic family. Output
internally biased and ac
coupled.
Pin 17 Laser Diode Bias Current
Monitor - Negative End B
The laser diode bias current is
accessible by measuring the
–
MON
directly to V RX, or to V RX
through a resistor for
monitoring photo detector bias
current.
voltage developed across pins 17
and 18. Dividing the voltage by
10 Ohms (internal) will yield the
value of the laser bias current.
CC
CC
Pin 10 Receiver Data Out RD+:
PECL logic family. Output
internally biased and ac
coupled.
Pins 2, 3, 6 Receiver Signal Ground
Pin 18 Laser Diode Bias Current
Pin 11 Transmitter Power Supply
V
RX:
Monitor - Positive End B
+
MON
EE
V
TX:
CC
Directly connect these pins to
the receiver ground plane.
See pin 17 description.
Provide +3.3 V dc via the
recommended transmitter
power supply filter circuit.
Locate the power supply filter
circuit as close as possible to the
Pin 19 Laser Diode Optical Power
Pins 4, 5 DO NOT CONNECT
Monitor - Negative End P
–
MON
The back facet diode monitor
current is accessible by measuring
the voltage developed across
pins 19 and 20. The voltage
across a 200 Ohm resistor
between pins 19 and 20 will be
proportional to the photo
current.
Pin 7 Receiver Power Supply V RX:
CC
Provide +3.3 V dc via the
V
TX pin.
CC
recommended receiver power
supply filter circuit. Locate the
power supply filter circuit as
Pins 12, 16 Transmitter Signal
Ground V TX:
EE
Directly connect these pins to
the transmitter signal ground
plane.
close as possible to the V RX
CC
pin. Note: the filter circuit
should not cause V to drop
CC
below minimum specification.
Pin 20 Laser Diode Optical Power
Pin 13 Transmitter Disable T
:
DIS
Monitor - Positive End P
+
MON
Optional feature, connect this
pin to +3.3 V TTL logic high “1”
to disable module. To enable
module connect to TTL logic low
“0”.
Pin 8 Signal Detect SD:
Normal optical input levels to
the receiver result in a logic “1”
output.
See pin 19 description.
Mounting Studs/Solder Posts
The two mounting studs are
provided for transceiver
mechanical attachment to the
circuit board. It is
recommended that the holes in
the circuit board be connected to
chassis ground.
Low optical input levels to the
receiver result in a logic “0”
output.
Pin 14 Transmitter Data In TD+:
PECL logic family.
Internal terminations are
provided (Terminations, ac
coupling).
This Signal Detect output can be
used to drive a TTL input on an
upstream circuit, such as Signal
Detect input or Loss of Signal-
bar.
Package Grounding Tabs
Connect four package grounding
tabs to signal ground.
Pin 15 Transmitter Data In Bar TD-:
Internal terminations are
provided (Terminations, ac
coupling).
6
Application Information
minimum transmitter output
Data Line Interconnections
The Applications Engineering
Group at Agilent is available to
assist you with technical
understanding and design trade-
offs associated with these
transceivers. You can contact
them through your Agilent sales
representative.
optical power (dBm avg) and the Agilent’s HFCT-5944xxx fiber-
lowest receiver sensitivity (dBm
avg). This OPB provides the
necessary optical signal range to
establish a working fiber-optic
optic transceivers are designed
to couple to +3.3 V PECL signals.
The transmitter driver circuit
regulates the output optical
link. The OPB is allocated for the power. The regulated light
fiber-optic cable length and the
corresponding link penalties.
For proper link performance, all
penalties that affect the link
performance must be accounted
output will maintain a constant
output optical power provided
the data pattern is balanced in
duty cycle. If the data duty cycle
has long, continuous state times
The following information is
provided to answer some of the
most common questions about
the use of the parts.
for within the link optical power (low or high data duty cycle),
budget.
then the output optical power
will gradually change its average
output optical power level to its
preset value.
Optical Power Budget and
Link Penalties
The worst-case Optical Power
Budget (OPB) in dB for a fiber-
optic link is determined by the
difference between the
Electrical and Mechanical Interface
Recommended Circuit
Figure 6 shows the
recommended interface for
deploying the Agilent
transceivers in a +3.3 V system.
Z = 50
Z = 50
W
W
VCC (+3.3 V)
TDIS (LVTTL)
130
W
BMON
-
TD-
BMON
+
NOTE A
130
W
PMON
PMON
-
TD+
+
20 19 18 17 16 15 14 13 12 11
VCC (+3.3 V)
1 µH
TX
10 µF
C2
C1
C3
VCC (+3.3 V)
RX
1 µH
RD+
RD-
10 µF
1
2
3
4
5
6
7
8
9
10
Z = 50
W
W
VCCRX (+3.3 V)
2 k
100
W
NOTE B
W
Z = 50
10 nF
NOTE C
3 k
SD
LVTTL
Note: C1 = C2 = C3 = 10 nF or 100 nF
TD+, TD- INPUTS ARE INTERNALLY TERMINATED AND AC COUPLED.
RD+, RD- OUTPUTS ARE INTERNALLY BIASED AND AC COUPLED.
Note A: CIRCUIT ASSUMES OPEN EMITTER OUTPUT.
Note B: CIRCUIT ASSUMES HIGH IMPENDANCE INTERNAL BIAS @ VCC - 1.3 V.
Note C: THE BIAS RESISTOR FOR VpdR SHOULD NOT EXCEED 2 k
W.
Figure 6. Recommended Interface Circuit
7
The HFCT-5944xxx has a
The receiver section is internally The designer also has the option
transmit disable function which
is a single-ended +3.3 V TTL
input which is dc-coupled to pin
13. In addition the devices offer
the designer the option of
monitoring the laser diode bias
current and the laser diode
optical power. The voltage
measured between pins 17 and
18 is proportional to the bias
current through an internal 10 Ω
resistor. Similarly the optical
power rear facet monitor circuit
provides a photo current which
is proportional to the voltage
measured between pins 19 and
20, this voltage is measured
across an internal 200 Ω
ac-coupled between the pre-
amplifier and the post-amplifier
stages. The Data and Data-bar
outputs of the post-amplifier are could be used to do this. Note
internally biased and ac-coupled that the photo detector bias
of monitoring the PIN photo
detector bias current. Figure 6
shows a resistor network, which
to their respective output pins
(pins 9, 10).
current pin must be connected
to V . Agilent also recommends
CC
that a decoupling capacitor is
used on this pin.
Signal Detect is a single-ended,
+3.3 V TTL compatible output
signal that is dc-coupled to pin 8
of the module. Signal Detect
should not be ac-coupled
externally to the follow-on
circuits because of its infrequent
state changes.
Caution should be taken to
account for the proper intercon-
nection between the supporting
Physical Layer integrated
circuits and these transceivers.
Figure 6 illustrates a
recommended interface circuit
for interconnecting to a +3.3 V
dc PECL fiber-optic transceiver.
resistor.
8.89
(0.35)
3.56
(0.14)
2 x Ø 2.29 MAX. 2 x Ø 1.4 0.1
2 x Ø 1.4 0.1
(0.055 0.004)
7.11
(0.28)
(0.09)
(0.055 0.004)
4 x Ø 1.4 0.1
(0.055 0.004)
10.16
(0.4)
13.34
(0.525)
7.59
(0.299)
9.59
(0.378)
2
(0.079)
9 x 1.78
(0.07)
2
3
3
2 x Ø 2.29
(0.09)
(0.079)
(0.118)
(0.118)
4.57
(0.18)
20 x Ø 0.81 0.1
(0.032 0.004)
6
16
3.08
(0.236)
(0.63)
(0.121)
DIMENSIONS IN MILLIMETERS (INCHES)
NOTES:
1. THIS FIGURE DESCRIBES THE RECOMMENDED CIRCUIT BOARD LAYOUT FOR THE SFF TRANSCEIVER.
2. THE HATCHED AREAS ARE KEEP-OUT AREAS RESERVED FOR HOUSING STANDOFFS. NO METAL TRACES OR
GROUND CONNECTION IN KEEP-OUT AREAS.
3. 2 x 10 TRANSCEIVER MODULE REQUIRES 26 PCB HOLES (20 I/O PINS, 2 SOLDER POSTS AND 4 PACKAGE
GROUNDING TABS).
PACKAGE GROUNDING TABS SHOULD BE CONNECTED TO SIGNAL GROUND.
4. THE MOUNTING STUDS SHOULD BE SOLDERED TO CHASSIS GROUND FOR MECHANICAL INTEGRITY AND TO
ENSURE FOOTPRINT COMPATIBILITY WITH OTHER SFF TRANSCEIVERS.
5. HOLES FOR HOUSING LEADS MUST BE TIED TO SIGNAL GROUND.
Figure 7. Recommended Board Layout Hole Pattern
8
Power Supply Filtering and Ground
Planes
It is important to exercise care
in circuit board layout to
achieve optimum performance
from these transceivers. Figure 6
shows the power supply circuit
which complies with the small
form factor multisource
15.24
(0.6)
10.16 0.1
(0.4 0.004)
TOP OF PCB
B
B
DETAIL A
agreement. It is further
recommended that a continuous
ground plane be provided in the
circuit board directly under the
transceiver to provide a low
inductance ground for signal
return current. This
1
(0.039)
15.24
(0.6)
A
SOLDER POSTS
recommendation is in keeping
with good high frequency board
layout practices.
14.22 0.1
(0.56 0.004)
Package footprint and front panel
considerations
15.75 MAX. 15.0 MIN.
(0.62 MAX. 0.59 MIN.)
SECTION B - B
The Agilent transceivers comply
with the circuit board “Common
Transceiver Footprint” hole
pattern defined in the current
multisource agreement which
defined the 2 x 10 package style.
This drawing is reproduced in
Figure 7 with the addition of
ANSI Y14.5M compliant
dimensioning to be used as a
guide in the mechanical layout
of your circuit board. Figure 8
shows the front panel
DIMENSIONS IN MILLIMETERS (INCHES)
1. FIGURE DESCRIBES THE RECOMMENDED FRONT PANEL OPENING FOR A LC OR SG SFF TRANSCEIVER.
2. SFF TRANSCEIVER PLACED AT 15.24 mm (0.6) MIN. SPACING.
Figure 8. Recommended Panel Mounting
Signal Detect
The Signal Detect circuit
(EMI) enables the designer to
pass a governmental agency’s
EMI regulatory standard and
more importantly, it reduces the
possibility of interference to
neighboring equipment. Agilent
has designed the HFCT-5944xxx
to provide good EMI
provides a deasserted output
signal when the optical link is
broken (or when the remote
transmitter is OFF). The Signal
Detect threshold is set to
dimensions associated with such transition from a high to low
a layout.
state between the minimum
receiver input optical power and performance. The EMI
Eye Safety Circuit
-35 dBm avg. input optical
power indicating a definite
optical fault (e.g. unplugged
connector for the receiver or
transmitter, broken fiber, or
performance of a chassis is
dependent on physical design
and features which help improve
EMI suppression. Agilent
For an optical transmitter
device to be eye-safe in the event
of a single fault failure, the
transmit-ter must either
maintain eye-safe operation or
be disabled.
encourages using standard RF
failed far-end transmitter or data suppression practices and
source). The Signal Detect does
not detect receiver data error or
error-rate. Data errors can be
determined by signal processing
offered by upstream PHY ICs.
avoiding poorly EMI-sealed
enclosures.
The HFCT-5944xxx is
intrinsically eye safe and does
not require shut down circuitry.
Agilent’s OC-48 LC transceivers
(HFCT-5944xxx) have nose
shields which provide a
Electromagnetic Interference (EMI)
convenient chassis connection to
One of a circuit board designer’s the nose of the transceiver. This
foremost concerns is the control
of electromagnetic emissions
from electronic equipment.
nose shield and the underlying
metalization (except ‘G’ options)
improve system EMI
Success in controlling generated
Electromagnetic Interference
performance by effectively
closing off the LC aperture.
9
Localized shielding is also
Process plug
Recommended Cleaning/Degreasing
improved by tying the four metal This transceiver is supplied with Chemicals
housing package grounding tabs
to signal ground on the PCB.
Though not obvious by
a process plug for protection of
the optical port within the LC
connector receptacle. This
process plug prevents
contamination during wave
solder and aqueous rinse as well
as during handling, shipping and
storage. It is made of a high-
temperature, molded sealing
material that can withstand
+85°C and a rinse pressure of
Alcohols: methyl, isopropyl,
isobutyl.
Aliphatics: hexane, heptane
Other: naphtha.
inspection, the nose shield and
metal housing are electrically
separated for customers who do
not wish to directly tie chassis
and signal grounds together.
The recommended transceiver
position, PCB layout and panel
opening for both devices are the
Do not use partially halogenated
hydrocarbons such as 1,1.1
trichloroethane, ketones such as
MEK, acetone, chloroform, ethyl
acetate, methylene dichloride,
phenol, methylene chloride, or
N-methylpyrolldone. Also,
Agilent does not recommend the
use of cleaners that use
halogenated hydrocarbons
because of their potential
same, making them mechanically 110 lbs per square inch.
drop-in compatible. Figure 8
shows the recommended
Recommended Solder fluxes
Solder fluxes used with the
HFCT-5944xxx should be
positioning of the transceivers
with respect to the PCB and
water-soluble, organic fluxes.
faceplate.
environmental harm.
Recommended solder fluxes
LC SFF Cleaning Recommendations
In the event of contamination of
the optical ports, the
recommended cleaning process
is the use of forced nitrogen. If
contamination is thought to have
remained, the optical ports can
be cleaned using a NTT
Package and Handling Instructions
Flammability
include Lonco 3355-11 from
London Chemical West, Inc. of
Burbank, CA, and 100 Flux from
Alpha-Metals of Jersey City, NJ.
The HFCT-5944xxx transceiver
housing consists of high
strength, heat resistant and UL
94 V-0 flame retardant plastic
and metal packaging.
Recommended Solder and Wash
Process
The HFCT-5944xxx are
compatible with industry-
standard wave solder processes.
international Cletop stick type
(diam. 1.25mm) and HFE7100
cleaning fluid.
10
Regulatory Compliance
Electromagnetic Interference (EMI)
Eye Safety
The Regulatory Compliance for
transceiver performance is
shown in Table 1. The overall
Most equipment designs utilizing These laser-based transceivers
these high-speed transceivers
from Agilent will be required to
are classified as AEL Class I
(U.S. 21 CFR(J) and AEL Class 1
per EN 60825-1 (+A11). They are
eye safe when used within the
data sheet limits per CDRH.
equipment design will determine meet FCC regulations in the
the certification level. The
transceiver performance is
offered as a figure of merit to
assist the designer in
considering their use in
equipment designs.
United States, CENELEC
EN55022 (CISPR 22) in Europe
and VCCI in Japan. Refer to EMI They are also eye safe under
section (page 9) for more details. normal operating conditions and
under all reasonably foreseeable
Immunity
single fault conditions per
Transceivers will be subject to
EN60825-1. Agilent has tested
Electrostatic Discharge (ESD)
The device has been tested to
comply with MIL-STD-883E
(Method 3015). It is important to
use normal ESD handling
precautions for ESD sensitive
devices. These precautions
include using grounded wrist
straps, work benches, and floor
mats in ESD controlled areas.
radio-frequency electromagnetic
the transceiver design for
fields following the IEC 61000-4-3
compliance with the
requirements listed below under
test method.
normal operating conditions and
under single fault conditions
where applicable. TUV
Rheinland has granted
certification to these
transceivers for laser eye safety
and use in EN 60950 and
EN 60825-2 applications. Their
performance enables the
transceivers to be used without
concern for eye safety up to 3.6
V transmitter V
.
CC
Table 1: Regulatory Compliance - Targeted Specification
Feature
Test Method
Performance
Electrostatic Discharge (ESD) MIL-STD-883E
Class 2 (>2 kV).
to the Electrical Pin
Electrostatic Discharge (ESD)
to the LC Receptacle
Electromagnetic Interference
(EMI)
Method 3015
Variation of IEC 61000-4-2
Tested to 8 kV contact discharge.
FCC Class B
Margins are dependent on customer board and chassis designs.
CENELEC EN55022 Class B
(CISPR 22A)
VCCI Class I
Immunity
Variation of IEC 61000-4-3
Typically show no measurable effect from a
10 V/m field swept from 27 to 1000 MHz applied to the transceiver
without a chassis enclosure.
Laser Eye Safety
US 21 CFR, Subchapter J
per Paragraphs 1002.10
and 1002.12
AEL Class I, FDA/CDRH
and Equipment Type Testing
CDRH Accession Number:
HFCT-5944L/AL ) 9521220 - 37
HFCT-5944ATL/TL ) 9521220 - 38
HFCT-5944ATG/AG/G/TG ) 9521220 - 41
AEL Class 1, TUV Rheinland of North America
TUV Bauart License:
EN 60825-1: 1994 +A11
EN 60825-2: 1994
EN 60950: 1992+A1+A2+A3
HFCT-5944L/GL/AL/AG ) 933/510111/04
HFCT-5944ATL/ATG/TL/TG ) 933/510111/05
Component Recognition
Underwriters Laboratories and Canadian
Standards Association Joint Component
Recognition
UL File Number: E173874
for Information Technology Equipment
Including Electrical Business Equipment.
11
CAUTION:
There are no user serviceable
parts nor any maintenance
required for the HFCT-5944xxx.
All adjustments are made at the
factory before shipment to our
customers. Tampering with or
modifying the performance of
the parts will result in voided
product warranty. It may also
result in improper operation of
the circuitry, and possible
overstress of the laser source.
Device degradation or product
failure may result.
Connection of the devices to a
non-approved optical source,
operating above the
recommended absolute
maximum conditions or
operating the HFCT-5944xxx in
a manner inconsistent with its
design and function may result
in hazardous radiation exposure
and may be considered an act of
modifying or manufacturing a
laser product. The person(s)
performing such an act is
required by law to recertify and
reidentify the laser product
under the provisions of U.S. 21
CFR (Subchapter J).
12
Absolute Maximum Ratings (HFCT-5944xxx)
Stresses in excess of the absolute maximum ratings can cause catastrophic damage to the device. Limits apply to each parameter in
isolation, all other parameters having values within the recommended operating conditions. It should not be assumed that limiting values
of more than one parameter can be applied to the product at the same time. Exposure to the absolute maximum ratings for extended
periods can adversely affect device reliability.
Parameter
Symbol
Min.
Typ.
Max.
Unit
Reference
Storage Temperature
TS
-40
+85
°C
Supply Voltage
VCC
VI
-0.5
-0.5
3.6
VCC
50
85
6
V
1
Data Input Voltage
Data Output Current
Relative Humidity
Receiver Optical Input
V
ID
mA
%
RH
0
PINABS
dBm
Recommended Operating Conditions (HFCT-5944xxx)
Parameter
Symbol
Min.
Typ.
Max.
Unit
Reference
Ambient Operating Temperature
HFCT-5944L/TL/G/TG
HFCT-5944AL/AG
TA
TA
0
+70
+85
°C
°C
2
2
2
-40
HFCT-5944ATL/ATG
Supply Voltage
TA
VCC
-20
3.1
+85
3.5
°C
V
Power Supply Rejection
PSR
VD
100
50
mVP-P
V
3
Transmitter Differential Input Voltage
Data Output Load
0.3
2.4
1.0
0.6
W
RDL
TTL Signal Detect Output Current - Low
TTL Signal Detect Output Current - High
Transmit Disable Input Voltage - Low
Transmit Disable Input Voltage - High
Transmit Disable Assert Time
IOL
mA
µA
V
IOH
-400
2.2
TDIS
TDIS
V
TASSERT
TDEASSERT
10
50
µs
µs
4
5
Transmit Disable Deassert Time
Process Compatibility (HFCT-5944xxx)
Parameter
Symbol
Min.
Typ.
Max.
Unit
Reference
Wave Soldering and Aqueous Wash
TSOLD/tSOLD
+260/10
°C/sec.
6
Notes:
1. The transceiver is class 1 eye safe up to V = 3.6 V.
2. Ambient operating temperature utilizes air flow of 2 ms over the device.
CC
-1
3. Tested with a sinusoidal signal in the frequency range from 10 Hz to 1 MHz on the V supply with the recommended power supply filter in place.
CC
Typically less than a 1 dB change in sensitivity is experienced.
4. Time delay from Transmit Disable Assertion to laser shutdown.
5. Time delay from Transmit Disable Deassertion to laser startup.
6. Aqueous wash pressure <110 psi.
13
Transmitter Electrical Characteristics
HFCT-5944L/G: T = 0°C to +70°C, V = 3.1 V to 3.5 V)
A
CC
HFCT-5944AL/AG: T = -40°C to +85°C, V = 3.1 V to 3.5 V)
A
CC
Parameter
Symbol
Min.
Typ.
Max.
Unit
Reference
Supply Current
ICCT
100
175
mA
Power Dissipation
PDIST
0.33
0.61
W
Data Input Voltage Swing (single-ended)
VIH - VIL
150
1200
mV
Transmitter Differential
Data Input Current - Low
IIL
-350
-2
µA
Transmitter Differential
Data Input Current - High
IIH
18
350
400
100
µA
mV
mV
Laser Diode Bias Monitor Voltage
Power Monitor Voltage
1, 2
1, 2
10
Receiver Electrical Characteristics
HFCT-5944L/G: T = 0°C to +70°C, V = 3.1 V to 3.5 V)
A
CC
HFCT-5944AL/AG: T = -40°C to +85°C, V = 3.1 V to 3.5 V)
A
CC
Parameter
Symbol
Min.
Typ.
Max.
Unit
Reference
Supply Current
ICCR
115
140
mA
3
Power Dissipation
PDISR
VOH - VOL
tr
0.38
0.49
930
150
150
0.8
W
4
5
6
6
7
7
Data Output Voltage Swing (single-ended)
Data Output Rise Time
575
mV
ps
125
125
Data Output Fall Time
tf
ps
Signal Detect Output Voltage - Low
Signal Detect Output Voltage - High
Signal Detect Assert Time (OFF to ON)
Signal Detect Deassert Time (ON to OFF)
Responsivity
VOL
V
VOH
2.0
0.6
V
ASMAX
ANSMAX
100
100
1.2
µs
µs
0.9
µA/µW
8
Notes:
1. Measured at T +25°C.
A =
2. The laser bias monitor current and laser diode optical power are calculated as ratios of the corresponding voltages to their current sensing
resistors, 10 W and 200 W (under modulation).
3. Includes current for biasing Rx data outputs.
4. Power dissipation value is the power dissipated in the receiver itself. It is calculated as the sum of the products of V and I minus the sum of the
CC
CC
products of the output voltages and currents.
5. These outputs are compatible with 10 k, 10 kH, and 100 k ECL and PECL inputs.
6. These are 20 - 80% values.
7. SD is LVTTL compatible.
8. Responsivity is valid for input optical power from -18 dBm to -4 dBm at 1310 nm.
14
Transmitter Optical Characteristics
HFCT-5944L/G: T = 0°C to +70°C, V = 3.1 V to 3.5 V)
A
CC
HFCT-5944AL/AG: T = -40°C to +85°C, V = 3.1 V to 3.5 V)
A
CC
Parameter
Symbol
Min.
Typ.
Max.
Unit
Reference
Output Optical Power 9 µm SMF
Center Wavelength
Spectral Width - rms
Optical Rise Time
POUT
-10
-6
-3
dBm
1
lC
s
1260
1360
4
nm
1.8
30
nm rms
ps
2
3
3
tr
70
Optical Fall Time
tf
150
12
225
ps
Extinction Ratio
ER
8.2
dB
Output Optical Eye
Back Reflection Sensitivity
Jitter Generation
Compliant with eye mask Telcordia GR-253-GORE
-8.5
dB
4
5
5
pk to pk
RMS
70
7
mUI
mUI
Receiver Optical Characteristics
HFCT-5944L/G: T = 0°C to +70°C, V = 3.1 V to 3.5 V)
A
CC
HFCT-5944AL/AG: T = -40°C to +85°C, V = 3.1 V to 3.5 V)
A
CC
Parameter
Symbol
Min.
Typ.
Max.
Unit
Reference
Receiver Sensitivity
PIN MIN
-23
-19
dBm avg.
6, 7
Receiver Overload
PIN MAX
-3
+1
dBm avg.
nm
6
l
Input Operating Wavelength
Signal Detect - Asserted
Signal Detect - Deasserted
Signal Detect - Hysteresis
Reflectance
1260
1570
-19.5
PA
PD
PH
-27.3
-28.7
1.4
dBm avg.
dBm avg.
dB
-35
0.5
4
-35
-27
dB
Notes:
1. The output power is coupled into a 1 m single-mode fiber. Minimum output optical level is at end of life.
2. The relationship between FWHM and RMS values for spectral width can be derived from the assumption of a Gaussian shaped spectrum which
results in RMS = FWHM/2.35.
3. These are unfiltered 20 - 80% values.
4. This meets the “desired” requirement in SONET specification (GR253). The figure given is the allowable mismatch for 1 dB degradation in receiver
sensitivity.
23
5. For the jitter measurements, the device was driven with SONET OC-48C data pattern filled with a 2 -1 PRBS payload.
23
6.
P
represents the typical optical input sensitivity of the receiver. Minimum sensitivity (P MIN) and saturation (P MAX) levels for a 2 -1 PRBS with
IN
IN
IN
72 ones and 72 zeros inserted. Over the range the receiver is guaranteed to provide output data with a Bit Error Rate better than or equal to
-10
1 x 10 . For multirate applications the sensitivity will meet the maximum SONET specification for OC48 across all datarates (-19 dBm).
7. Beginning of life sensitivity at +25°C is -22 dBm (worst case).
15
Transmitter Electrical Characteristics
HFCT-5944TL/TG: T = 0°C to +70°C, V = 3.1 V to 3.5 V)
A
CC
HFCT-5944ATL/ATG: T = -20°C to +85°C, V = 3.1 V to 3.5 V)
A
CC
Parameter
Symbol
Min.
Typ.
Max.
Unit
Reference
Supply Current
ICCT
100
175
mA
Power Dissipation
PDIST
0.33
0.61
W
Data Input Voltage Swing (single-ended)
VIH - VIL
150
1200
mV
Transmitter Differential
Data Input Current - Low
IIL
-350
-2
µA
Transmitter Differential
Data Input Current - High
IIH
18
350
400
100
µA
mV
mV
Laser Diode Bias Monitor Voltage
Power Monitor Voltage
0
1, 2
1, 2
10
Receiver Electrical Characteristics
HFCT-5944TL/TG: T = 0°C to +70°C, V = 3.1 V to 3.5 V)
A
CC
HFCT-5944ATL/ATG: T = -20°C to +85°C, V = 3.1 V to 3.5 V)
A
CC
Parameter
Symbol
Min.
Typ.
Max.
Unit
Reference
Supply Current
ICCR
115
140
mA
3
Power Dissipation
PDISR
VOH - VOL
tr
0.38
0.49
930
150
150
0.8
W
4
5
6
6
7
7
Data Output Voltage Swing (single-ended)
Data Output Rise Time
575
mV
ps
125
125
Data Output Fall Time
tf
ps
Signal Detect Output Voltage - Low
Signal Detect Output Voltage - High
Signal Detect Assert Time (OFF to ON)
Signal Detect Deassert Time (ON to OFF)
Responsivity
VOL
V
VOH
2.0
0.6
V
ASMAX
ANSMAX
100
100
1.2
µs
µs
0.9
µA/µW
8
Notes:
1. Measured at T +25°C.
A =
2. The laser bias monitor current and laser diode optical power are calculated as ratios of the corresponding voltages to their current sensing resistors,
10 W and 200 W (under modulation).
3. Includes current for biasing Rx data outputs.
4. Power dissipation value is the power dissipated in the receiver itself. It is calculated as the sum of the products of V and I minus the sum of the
CC
CC
products of the output voltages and currents.
5. These outputs are compatible with 10 k, 10 kH, and 100 k ECL and PECL inputs.
6. These are 20 - 80% values.
7. SD is LVTTL compatible.
8. Responsivity is valid for input optical power from -18 dBm to -4 dBm at 1310 nm.
16
Transmitter Optical Characteristics
HFCT-5944TL/TG: T = 0°C to +70°C, V = 3.1 V to 3.5 V)
A
CC
HFCT-5944ATL/ATG: T = -20°C to +85°C, V = 3.1 V to 3.5 V)
A
CC
Parameter
Symbol
Min.
Typ.
Max.
Unit
Reference
Output Optical Power 9 µm SMF
Center Wavelength
Spectral Width
POUT
-5
-3
0
dBm
1
lC
1260
1360
1
nm
s
nm (pk -20 dB)
2
Side Mode Suppression Ratio
Optical Rise Time
SMSR
30
dB
ns
ns
dB
tr
3
3
Optical Fall Time
tf
Extinction Ratio
ER
8.2
10.5
Output Optical Eye
Compliant with eye mask Telcordia GR-253-CORE
-8.5
Back Reflection Sensitivity
Jitter Generation
dB
4
5
5
pk to pk
RMS
70
7
mUI
mUI
Receiver Optical Characteristics
HFCT-5944TL/TG: T = 0°C to +70°C, V = 3.1 V to 3.5 V)
A
CC
HFCT-5944ATL/ATG: T = -20°C to +85°C, V = 3.1 V to 3.5 V)
A
CC
Parameter
Symbol
Min.
Typ.
Max.
Unit
Reference
Receiver Sensitivity
PIN MIN
-23
-19
dBm avg.
6, 7
Receiver Overload
PIN MAX
0
+1
dBm avg.
nm
6
l
Input Operating Wavelength
Signal Detect - Asserted
Signal Detect - Deasserted
Signal Detect - Hysteresis
Reflectance
1260
1570
-19.5
PA
PD
PH
-27.3
-28.7
1.4
dBm avg.
dBm avg.
dB
-35
0.5
4
-35
-27
dB
Notes:
1. The output power is coupled into a 1 m single-mode fiber. Minimum output optical level is at end of life.
2. Spectral width of main laser peak measured 20 dB below peak spectral density.
3. These are unfiltered 20 - 80% values.
4. This meets the “desired” requirement in SONET specification (GR253). The figure given is the allowable mismatch for 1 dB degradation in receiver
sensitivity.
23
5. For the jitter measurements, the device was driven with SONET OC-48C data pattern filled with a 2 -1 PRBS payload.
23
6.
P
represents the typical optical input sensitivity of the receiver. Minimum sensitivity (P MIN) and saturation (P MAX) levels for a 2 -1 PRBS with
IN
IN
IN
72 ones and 72 zeros inserted. Over the range the receiver is guaranteed to provide output data with a Bit Error Rate better than or equal to
-10
1 x 10 . For multirate applications the sensitivity will meet the maximum SONET specification for OC48 across all datarates (-19 dBm).
7. Beginning of life sensitivity at +25°C is -22 dBm (worst case).
17
Design Support Materials
Agilent has created a number of
reference designs with major
PHY IC vendors in order to
demonstate full functionality
and interoperability. Such design
information and results can be
made available to the designer
as a technical aid. Please contact
your Agilent representative for
further information if required.
Ordering Information
1300 nm FP Laser (Temperature range 0°C to +70°C)
HFCT-5944L
HFCT-5944G
1300 nm FP Laser (Temperature range -40°C to +85°C)
HFCT-5944AL
HFCT-5944AG
1300 nm DFB Laser (Temperature range 0°C to +70°C)
HFCT-5944TL
HFCT-5944TG
1300 nm DFB Laser (Temperature range -20°C to +85°C)
HFCT-5944ATL
HFCT-5944ATG
Class 1 Laser Product: This product conforms to the
applicable requirements of 21 CFR 1040 at the date of
manufacture
Date of Manufacture:
Agilent Technologies Inc., No 1 Yishun Ave 7, Singapore
Handling Precautions
1. The HFCT-5944xxx can be damaged by current surges or overvoltage.
Power supply transient precautions should be taken.
2. Normal handling precautions for electrostatic sensitive devices
should be taken.
For product information and a complete list of
Agilent contacts and distributors, please go to
our web site.
www.agilent.com/
semiconductors
E-mail:SemiconductorSupport@agilent.com
Data subject to change.
Copyright © 2002 Agilent Technologies, Inc.
November 25, 2002
5988-8282EN
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