AGERE 2417K4A

Data Sheet, Rev. 1
August 2001
NetLight ® 2417K4A 1300 nm Laser
2.5 Gbits/s Transceiver
■
TTL signal-detect output
■
Low power dissipation
■
Single 3.3 V power supply
■
LVPECL/CML compatible data inputs and CML
compatible data outputs
■
■
Operating temperature range: 0 °C to
70 °C
Agere Systems Inc. Reliability and Qualification
Program for built-in quality and reliability
Description
Available in a small form-factor, RJ-45 size, plastic package,
the 2417K4A Transceiver is a high-performance, cost-effective, optical transceiver for SONET applications.
Features
■
SONET SR OC-48, SDH I-16 applications
■
High-speed, optical data interface for shelf-to-shelf
interconnect
■
Small form factor, RJ-45 size, 10-pin package
■
LC duplex receptacle
■
Uncooled 1300 nm laser transmitter with automatic
output power control
■
Transmitter disable input
■
Wide dynamic range receiver with InGaAs PIN
photodetector
The 2417K4A transceiver is a high-speed, cost-effective optical transceiver intended for 2.488 Gbits/s
shelf-to-shelf optical interconnect applications as well
as SONET SR OC-48 and SDH I-16. The transceiver
features proven Agere Systems optics and is packaged in a narrow-width plastic housing with an LC
duplex receptacle. The receptacle fits into an RJ-45
form factor outline. The 10-pin package pinout conforms to a multisource transceiver agreement.
The transmitter features the ability to interface to both
LVPECL and CML differential logic level data inputs.
It also features a TTL logic level disable input. The
receiver features differential CML logic level outputs
and a TTL logic level signal-detect output.
NetLight 2417K4A 1300 nm Laser
2.5 Gbits/s Transceiver
Data Sheet, Rev. 1
August 2001
Absolute Maximum Ratings
Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. These are absolute stress ratings only. Functional operation of the device is not implied at these or any other conditions in excess
of those given in the operations sections of the data sheet. Exposure to absolute maximum ratings for extended
periods can adversely affect device reliability.
Parameter
Supply Voltage
Operating Case Temperature Range
Storage Temperature Range
Lead Soldering Temperature/Time
Operating Wavelength Range
Symbol
Min
Max
Unit
VCC
TC
Tstg
—
λ
0
0
–40
—
1.1
5
70
85
250/10
1.6
V
°C
°C
°C/s
µm
Pin Information
5 4 3 2 1
RX
6 7 8 9 10
TX
Figure 1. 2417K4A Transceiver, 10-Pin Configuration, Top View
1-967
Table 1. Transceiver Pin Descriptions
Pin
Number
Symbol
MS
MS
1
2
3
VEER
VCCR
SD
4
5
RD–
RD+
6
7
8
9
VCCT
VEET
TDIS
TD+
10
TD–
2
Name/Description
Logic
Family
Receiver
Mounting Studs. The mounting studs are provided for transceiver
NA
mechanical attachment to the circuit board. They may also provide an
optional connection of the transceiver to the equipment chassis
ground.
Receiver Signal Ground.
NA
Receiver Power Supply.
NA
Signal Detect.
LVTTL
Normal operation: logic one output.
Fault condition: logic zero output.
Received DATA Out.
CML
Received DATA Out.
CML
Transmitter
Transmitter Power Supply.
NA
Transmitter Signal Ground.
NA
Transmitter Disable.
LVTTL
Transmitter DATA In. An internal 50 Ω termination is provided, con- LVPECL
sisting of a 100 Ω resistor between the TD+ and TD– pins.
or CML
Transmitter DATA In. See TD+ pin for terminations.
LVPECL
or CML
Agere Systems Inc.
NetLight 2417K4A 1300 nm Laser
2.5 Gbits/s Transceiver
Data Sheet, Rev. 1
August 2001
Electrostatic Discharge
Caution: This device is susceptible to damage as
a result of electrostatic discharge (ESD).
Take proper precautions during both
handling and testing. Follow EIA ® Standard EIA-625.
Although protection circuitry is designed into the
device, take proper precautions to avoid exposure to
ESD.
Agere Systems employs a human-body model (HBM)
for ESD susceptibility testing and protection-design
evaluation. ESD voltage thresholds are dependent on
the critical parameters used to define the model. A
standard HBM (resistance = 1.5 kΩ, capacitance =
100 pF) is widely used and, therefore, can be used for
comparison purposes. The HBM ESD threshold
established for the 2417K4A transceiver is ±1000 V.
Application Information
The 2417 receiver section is a highly sensitive fiberoptic receiver. Although the data outputs are digital
logic levels (CML), the device should be thought of as
an analog component. When laying out system application boards, the 2417 transceiver should receive the
same type of consideration one would give to a sensitive analog component.
Printed-Wiring Board Layout Considerations
A fiber-optic receiver employs a very high gain, widebandwidth transimpedance amplifier. This amplifier
detects and amplifies signals that are only tens of nA in
amplitude when the receiver is operating near its sensitivity limit. Any unwanted signal currents that couple
into the receiver circuitry cause a decrease in the
receiver's sensitivity and can also degrade the performance of the receiver's signal detect (SD) circuit. To
minimize the coupling of unwanted noise into the
receiver, careful attention must be given to the printedwiring board.
At a minimum, a double-sided printed-wiring board
(PWB) with a large component-side ground plane
beneath the transceiver must be used. In applications
that include many other high-speed devices, a multilayer PWB is highly recommended. This permits the
placement of power and ground on separate layers,
which allows them to be isolated from the signal lines.
Agere Systems Inc.
Multilayer construction also permits the routing of sensitive signal traces away from high-level, high-speed
signal lines. To minimize the possibility of coupling
noise into the receiver section, high-level, high-speed
signals such as transmitter inputs and clock lines
should be routed as far away as possible from the
receiver pins.
Noise that couples into the receiver through the power
supply pins can also degrade performance. It is
recommended that a pi filter, shown in Figure 3, be
used for both the transmitter and receiver power
supplies.
Data and Signal Detect Outputs
Due to the high switching speeds of CML outputs,
transmission line design must be used to interconnect
components. To ensure optimum signal fidelity, both
data outputs (RD+/RD–) should be terminated identically. The signal lines connecting the data outputs to
the next device should be equal in length and have
matched impedances. Controlled impedance stripline
or microstrip construction must be used to preserve the
quality of the signal into the next component and to
minimize reflections back into the receiver, which could
degrade its performance. Excessive ringing due to
reflections caused by improperly terminated signal
lines makes it difficult for the component receiving
these signals to decipher the proper logic levels and
can cause transitions to occur where none were
intended. Also, by minimizing high-frequency ringing,
possible EMI problems can be avoided.
The signal-detect output is positive LVTTL logic. A logic
low at this output indicates that the optical signal into
the receiver has been interrupted or that the light level
has fallen below the minimum signal-detect threshold.
This output should not be used as an error rate indicator, since its switching threshold is determined only by
the magnitude of the incoming optical signal.
SINGLE ENDED
VOH
DATA
VOL
DIFFERENTIAL
VOH
DATA
VOL
Figure 2. Data Input/Output Logic Level Definitions
3
NetLight 2417K4A 1300 nm Laser
2.5 Gbits/s Transceiver
Data Sheet, Rev. 1
August 2001
Application Information (continued)
Transceiver Processing
When the process plug is placed in the transceiver's optical port, the transceiver and plug can withstand normal
wave soldering and aqueous spray cleaning processes. However, the transceiver is not hermetic, and should not
be subjected to immersion in cleaning solvents. The transceiver case should not be exposed to temperatures in
excess of 125 °C. The transceiver pins can be wave soldered at 250 °C for up to 10 seconds. The process plug
should only be used once. After removing the process plug from the transceiver, it must not be used again as a process plug; however, if it has not been contaminated, it can be reused as a dust cover.
Transceiver Optical and Electrical Characteristics
Table 2. Transmitter Optical and Electrical Characteristics (TC = 0 °C to 70 °C; VCC = 3.135 V—3.465 V)
Parameter
Average Optical Output Power (EOL)
Optical Wavelength
Spectral Width
Dynamic Extinction Ratio
Output Optical Eye
Power Supply Current
Input Data Voltage:
Single Ended*
Differential*
Transmit Disable Voltage†
Transmit Enable Voltage†
Symbol
Min
Max
Unit
PO
–10.0
–3.0
dBm
λC
1266
1360
nm
∆λRMS
—
4
nm
EXT
8.2
—
dB
Compliant with SONET GR-253-CORE and
ITU-T G.957 Eye Mask Requirements
ICCT
—
190
mA
VINp-p
VINp-p
VD
VEN
150
300
VCC – 0.9
VEE
800
1600
VCC
VEE + 0.8
mVp-p
mVp-p
V
V
* 50 ¾ load, measured single ended. Differential operation is necessary for optimum performance. (See Figure 2 for visual representation.)
† TTL compatible interface.
Table 3. Receiver Optical and Electrical Characteristics (TC = 0 °C to 70 °C; VCC = 3.135 V—3.465 V)
Parameter
Average Sensitivity:*
800 mV (CML) Differential Input To Transmitter
Maximum Input Power*
Power Supply Current
Output Data Voltage:
Single Ended†
Differential†
Signal-detect Switching Threshold:
Assert
Deassert
Signal-detect Hysteresis
Signal-detect Voltage:‡
Low
High
Signal-detect Response Time
Symbol
Min
Max
Unit
PI
PMAX
ICCR
—
–3
—
–18
—
110
dBm
dBm
mA
VOUTp-p
VOUTp-p
300
600
500
1000
mVp-p
mVp-p
LSTD
LSTI
HYS
–45
—
0.5
–19
–18.5
6
dBm
dBm
dB
VOL
VOH
SDRT
0.0
2.4
—
0.8
VCC
100
V
V
µs
* 223 – 1 PRBS with a BER of 1 x 10–10.
† 50 ¾ load, measured single ended. Differential operation is necessary for optimum performance.(See Figure 2 for visual representation.)
‡ TTL compatible interface.
4
Agere Systems Inc.
NetLight 2417K4A 1300 nm Laser
2.5 Gbits/s Transceiver
Data Sheet, Rev. 1
August 2001
Qualification and Reliability
To help ensure high product reliability and customer satisfaction, Agere Systems is committed to an intensive quality program that starts in the design phase and proceeds through the manufacturing process. Optoelectronic modules are qualified to Agere Systems internal standards as well as other appropriate industry standards using MILSTD-883 test methods and procedures and using sampling techniques consistent with Telcordia Technologies ®
requirements.
In addition, the design, development, and manufacturing facilities of Agere Systems Optoelectronics unit are certified to be in full compliance with the latest ISO ®-9001 quality system standards.
Electrical Schematic
TRANSMITTER
DRIVER
VEET
7
TD–
10
100 Ω R
TD+
9
VCCT
L2
6
SFF TRANSCEIVER
VCC
C4
VCCR
C5
2
PREAMP
C2
RECEIVER
POSTAMPLIFIER
RD+
5
RD–
4
SD
3
VEER
1
C3
L1
C1
L1 = L2 = 1 µH—4. 7 µH*
C1 = C2 = 10 nF†
C3 = 4.7 µF—10 µF
C4 = C5 = 4.7 µF—10 µF
* Ferrite beads can be used as an option.
† For all capacitors, MLC caps are recommended
Figure 3. Power Supply Filtering of SFF Transceiver
Agere Systems Inc.
1-968(F).a
5
NetLight 2417K4A 1300 nm Laser
2.5 Gbits/s Transceiver
Data Sheet, Rev. 1
August 2001
Electrical Data Interface—Current Mode Logic (CML)
VCC (+3.3 V)
VCC (+3.3 V)
TD+
100 Ω
Z = 50 Ω
Z = 50 Ω
CML
TD–
(A) TRANSMITTER INTERFACE—dc COUPLED—(CML)
VCC (+3.3 V)
VCC (+3.3 V)
RD+
Z = 50 Ω
Z = 50 Ω
CML
RD–
(B) RECEIVER INTERFACE—dc COUPLED—(CML)
Figure 4. 3.3 V Transceiver Interface with 3.3 V ICs and CML
6
1-1033(F).c
Agere Systems Inc.
NetLight 2417K4A 1300 nm Laser
2.5 Gbits/s Transceiver
Data Sheet, Rev. 1
August 2001
Alternate Electrical Data Interface Options
VCC (+3.3 V)
VCC (+3.3 V)
TD+
0.1 µF*
100 Ω 0.1 µF*
Z = 50 Ω
Z = 50 Ω
TD–
130 Ω
LVPECL
130 Ω
* OPTIONAL ac COUPLING CAPACITORS; USE CERAMIC X7R
OR EQUIVALEN T
(A) TRANSMITTER INTERFACE—ac OR dc COUPLED—(LVPECL)
VCC (+3.3 V)
VCC (+3.3 V)
0.1 µF
Z = 50 Ω
RD+
RD–
Z = 50 Ω
CML
0.1 µF
(B) RECEIVER INTERFACE—ac COUPLED—(CML)
1-1033(F).b
Figure 5. 3.3 V Transceiver Interface with 3.3 V ICs
Agere Systems Inc.
7
NetLight 2417K4A 1300 nm Laser
2.5 Gbits/s Transceiver
Data Sheet, Rev. 1
August 2001
Outline Diagrams
Package Outline
Dimensions are in inches and (millimeters).
1.914
(48.62)
0.535 MAX
(13.59)
0.246
(6.25)
0.386 MAX
(9.80)
0.014
(0.36)
0.160 (4.06)
0.018
(0.46)
0.280
(7.11)
0.070 (1.78)
0.700
(17.78)
0.400
(10.16)
0.150
(3.81)
0.734
(18.64)
1-1032(F).d
8
Agere Systems Inc.
NetLight 2417K4A 1300 nm Laser
2.5 Gbits/s Transceiver
Data Sheet, Rev. 1
August 2001
Outline Diagrams (continued)
Printed-Wiring Board Layout *, †
Dimensions are in inches and (millimeters).
3.00
(0.118)
7.59
(0.299)
13.34
(0.525)
A
(2x) ∅ 2.29 MAX
(0.090)
AREA FOR EYELETS
(2x) ∅ 1.4 ± 0.1 NOTE 1
(0.055 ± 0.004)
∅ 0.00 M A
3.00
(0.118)
4.57
(0.180)
8.89
(0.350)
7.11
(0.280)
6.00
(0.236)
(9x) 1.78
(0.070)
(2x) ∅ 0.81 ± 0.1
(0.032 ± 0.004)
3.08
(0.121)
16.00 REF
(0.630)
∅ 0.00 M A
3.56
(0.140)
2.00 (0.79)
(2x) ∅ 2.29 MAX
(0.090)
2.01
(0.79)
9.59
(0.378)
10.16
(0.400)
(4x) ∅ 1.4 ± 0.1 NOTE 2
(0.055 ± 0.004)
∅ 0.00 M A
NOTES:
1. HOLES FOR MOUNTING STUDS MUST BE TIED TO CHASSIS GROUND.
2. HOLES FOR HOUSING LEADS MUST BE TIED TO SIGNAL GROUND.
1-1271(F)
* The hatched areas are keep-out areas reserved for housing standoffs. No metal traces of ground connection in keep-out area.
† Twenty-pin module shown; 10-pin module requires only 16 PWB holes.
Agere Systems Inc.
9
NetLight 2417K4A 1300 nm Laser
2.5 Gbits/s Transceiver
Data Sheet, Rev. 1
August 2001
Outline Diagrams (continued)
Recommended Panel Opening
Dimensions are in inches and (millimeters).
0.400
(10.16)
0.590 TO 0.620
(14.99 TO 15.75)
0.560
(14.22)
10
0.039 TO 0.098
(1.00 TO 2.49)
1-1088(F).d
Agere Systems Inc.
NetLight 2417K4A 1300 nm Laser
2.5 Gbits/s Transceiver
Data Sheet, Rev. 1
August 2001
Laser Safety Information
Class I Laser Product
FDA/CDRH Class I laser product. All versions of the transceiver are Class I laser products per CDRH, 21 CFR
1040 Laser Safety requirements. All versions are Class I laser products per IEC ® 60825-1:1993. The transceiver
has been certified with the FDA under accession number 9520668.
CAUTION: Use of controls, adjustments, and procedures other than those specified herein may result in
hazardous laser radiation exposure.
This product complies with 21 CFR 1040.10 and 1040.11.
Wavelength = 1.3 µm
Maximum power = 1.0 mW
Because of size constraints, laser safety labeling is not affixed to the module but is attached to the outside of the
shipping carton.
Product is not shipped with power supply.
NOTICE
Unterminated optical connectors may emit laser radiation.
Do not view with optical instruments.
Agere Systems Inc.
11
NetLight 2417K4A 1300 nm Laser
2.5 Gbits/s Transceiver
Data Sheet, Rev. 1
August 2001
Ordering Information
Description
Device Code
Comcode
2.5 Gbits/s 2 x 5 SFF LC Transceiver
2417K4A
108685587
EIA is a registered trademark of The Electronic Industries Association.
Telcordia Technologies is a registered trademark of Telcordia Technologies, Inc.
ISO is a registered trademark of The International Organization for Standardization.
IEC is a registered trademark of The International Electrotechnical Commission.
For additional information, contact your Agere Systems Account Manager or the following:
http://www.agere.com
INTERNET:
[email protected]
E-MAIL:
N. AMERICA: Agere Systems Inc., 555 Union Boulevard, Room 30L-15P-BA, Allentown, PA 18109-3286
1-800-372-2447, FAX 610-712-4106 (In CANADA: 1-800-553-2448, FAX 610-712-4106)
ASIA:
Agere Systems Hong Kong Ltd., Suites 3201 & 3210-12, 32/F, Tower 2, The Gateway, Harbour City, Kowloon
Tel. (852) 3129-2000, FAX (852) 3129-2020
CHINA: (86) 21-5047-1212 (Shanghai), (86) 10-6522-5566 (Beijing), (86) 755-695-7224 (Shenzhen)
JAPAN: (81) 3-5421-1600 (Tokyo), KOREA: (82) 2-767-1850 (Seoul), SINGAPORE: (65) 778-8833, TAIWAN: (886) 2-2725-5858 (Taipei)
Tel. (44) 7000 624624, FAX (44) 1344 488 045
EUROPE:
Agere Systems Inc. reserves the right to make changes to the product(s) or information contained herein without notice. No liability is assumed as a result of their use or application. NetLight
is a registered trademark of Agere Systems Inc.
Copyright © 2001 Agere Systems Inc.
All Rights Reserved
August 2001
DS00-107OPTO-1 (Replaces DS00-107OPTO)