- 1 / 7 -
(SCM7591-XC)
Specification : TS-S97D014C
Date : March, 2001
Technical Specification
for
Optical Transceiver Module
SCM7591-XC
SUMITOMO Electric reserves the right to make changes in the specification described hereinafter without prior
notice.
155.52Mb/s 622.08Mb/s other _________
_
Transmitter Receiver Transceiver
Short Haul Long Haul
Intermediate Reach Long Reach
Single 5.0 V Single 3.3 V other _________
_
1.3 µm 1.55 µm other _________
_
( 2R / 3R ) ( 2R / 3R )
other _________
_
#Safety Precaution Symbols This specification uses various picture symbols to prevent possible injury to operator or
other persons or damage to properties for appropriate use of the product. The symbols and definitions are as shown below. Be sure to be
familiar with these symbols before reading this specification.
Warning Wrong operation without following this instruction may lead to human death or serious injury.
Caution Wrong operation without following this instruction may lead to human injury or property damage.
Example of picture symbols indicates prohibition of actions. Action details are explained nearby.
indicates compulsory actions or instructions. Action details are explained near by.
- 2 / 7 -
(SCM7591-XC)
Specification : TS-S97D014C
Date : March, 2001
1. General
SCM7591-XC is a series of compact and high speed performance digital optical transceiver module ideally de-
signed for versatile high speed network applications. 1300nm high speed InGaAsP-LD and InGaAs PIN-PD are
provided as a light source and a detector, respectively. Transceiver module has PC board mountable package with
electrical and optical interfaces.
* Data Rate 155.52 Mbps, NRZ
* Duty Cycle 50%
* Power Supply Voltage Single +3.3V
* Electrical Interface PECL(Data)
* Fiber Coupled Power -8 ~ -15dBm (Typ. -11dBm) for SMF
* Sensitivity -8 ~ -28dBm
* Connector Interface SC Duplex Connector
The features of SCM7591-XC are listed below.
* Features Low Power Supply Voltage / Low Power Consumption
Plastic Molded Package
Multi-sourced Footprint
Transmitter...... Uncooled Laser with Automatic Power Control IC
Optical Output Shut-down ( Disable )
Laser Bias Current Monitor / Optical Output Power Monitor
Class 1 Laser Product (IEC 825-1 and FDA 21 CFR 1040.10 and 1040.11)
Receiver......... Wide Dynamic Range
ITU-T G.957 / G.958 and Bellcore TA-NWT-000253 Compliant
Signal Detect (FLAG) Function / Optical Input Power Monitor
2. Block Diagram
Figure 1-1. Block Diagram (Transmitter)
Figure 1-2 Block Diagram (Receiver)
TPM
(Transmitter Optical
Output Power Monitor)
Disable
Monitor
Pin PD LD
Auto
Power
Control
Circuit
BM (Laser Bias Monitor)
Data
Input
Buffer Laser
Bias
Circuit
Modulation
Circuit
TD
TDb
Input
Buffer Reference
Voltage
Generator
Output
Buffer
RD
RDb
PIN-PD SD
Vcc
Limiting
Amplifier
Comparator
Peak Hold
Circuit
Pre
Amplifier
Current
Monitor
Circuit
RPM
(Receiver Optical Input
Power Monitor)
- 3 / 7 -
(SCM7591-XC)
Specification : TS-S97D014C
Date : March, 2001
3. Package Dimension
4. Pin Assignment
Caution
Do not disassemble this product. Otherwise, failure, electrical shock overheating or fire may occur.
Handle the lead pin carefully. Use assisting tools or prospective aids as required. A lead pin may injure skin or human body
Optical
Centerline
Optical
Centerline
25.4
50.8
30.48 2.54
15.88
0.60
8X2.54P=20.32
UNIT: mm
2-φ1.5
18-φ0.4
9.38
8.78
Pin 1
Pin 9
Pin 10
Pin 18
Figure 2. Package Dimension
3.2
2.2
No. Symbol Function
1 NC Non Connection (Internally)
2 NC Non Connection (Internally)
3 NC Non Connection (Internally)
4 NC Non Connection (Internally)
5 BM(-) Monitoring pin for LD Bias Monitor
6 BM(+) Monitoring pin for LD Bias Monitor
7 Disable LD Disable Input
8 RPM Receiver Optical Input Power Monitor
9 TPM Transmitter Optical Output Power Monitor
10 Veetx Power Supply (-) for Transmitter : Connected to GND
11 TD Transmitter Differential Data (Positive)
12 TDb Transmitter Differential Data (Negative)
13 Vcctx Power Supply (+) for Transmitter : Connected to +3.3V
14 Vccrx Power Supply (+) for Receiver : Connected to +3.3V
15 FLAG(SD) FLAG (Signal Detect)
16 RDb Received Differential Data (Negative)
17 RD Received Differential Data (Positive)
18 Veerx Power Supply (-) for Receiver : Connected to GND
NC pins should be left open for additional functions in the future
- 4 / 7 -
(SCM7591-XC)
Specification : TS-S97D014C
Date : March, 2001
5. Absolute Maximum Ratings
6. Electrical Interface
( Unless otherwise specified, Vcc = 3.14 to 3.47 V and all operating temperature shall apply. )
6-1. Transmitter side
Note 1. Input bias current is not included. 2. 50% duty cycle data 3. 155.52Mbps 4.SCM7591-XC 5.SCM7591-XC-W
6. Vcc=+3.3V 7. Tc=25°C 8. 20~80% 9. The transmitter is enabled as default state and requires an external voltage only
to disable. (Refer to Section 8. Relation between Disable Input Voltage and Optical Output Power ) 10. The Laser Bias
Monitor Current are calculated as ratios of the corresponding voltages to their current-sensing resistor, 10Ω (See Figure 3).
Upon Measuring or utilzing these values, please use a device whose Impedance is high enough (>1MΩ) compared with
those resistors. 11. The relationship between the Output Power Change and the Tranmitter Optical Power Monitor Voltage
is shown in Figure 4.
Warning
Use the product with the rated voltage described in the specification. If the voltage exceeds the maximum rating, overheating or fire
may occur.
Caution
Do not store the product in the area where temperature exceeds the maximum rating, where there is too much moisture or damp-
ness, where there is acid gas or corrosive gas, or other extreme conditions. Otherwise, failure, overheating or fire may occur.
0
0.5
1
1.5
2
-4 -3 -2 -1 0 1 2 3 4
Figure 4. Output Power Change versus the Optical Output
Monitor Voltage (typ.)
TPM(typ)[V]
∆
P[dB]
Bias
Circuit
Laser Monitor PD
Pin 6
Pin 5
Pin 9
Vcc Vcc
Fugure 3. Monitor Pin
3k
Ω
10
Ω
Trans -
impedance
Amp.
3k
Ω
APC
Circuit
Symbol min. Max Unit Note
Stora
g
e Case Tem
p
erature Ts -40 85 °C 1
-5 70 °C 1,2
-40 85 °C 1,3
Supply Voltage Vcc 0.0 4.0 V 4
In
p
ut Volta
g
e Vi 0.0 Vcc+0.5 V 5
Tem
p
erature 260 °C
Time 10 sec.
Note 1. No condensation allowed. 2.SCM7591-XC 3.SCM7591-XC-W
4. Vcc=+3.3V 5. TD, TDb, Disable 6. Measured on lead pin at 2mm (0.079in.) off the package bottom
Operating Case Teperature
6Lead Soldering
Parameter
Tc
Parameter S
y
mbol min. T
yp
. Max. Unit Note
Su
pp
l
y
Volta
g
e Vcc 3.14 3.30 3.47 V
70 140 1, 2, 3, 4
70 150 1, 2, 3, 5
In
p
ut Volta
g
eHi
g
h Vih Vcc-1.17 Vcc-0.73 V 6, 7
TD, TDb Low Vil Vcc-1.95 Vcc-1.45
In
p
ut Current Hi
g
hIih-10 150
µA6, 7
TD, TDb Low Iil -10 10
Si
g
nal In
p
ut Rise / Fall Time 1.5 nsec. 8
Disable In
p
ut Volta
g
e Vdi 2.0 Vcc V 9
Disable In
p
ut Current Idi -10 140 200 µA
Enable In
p
ut Volta
g
e Vei 0.0 0.8 V
LD Bias Monitor Volta
g
e Vbm 0.01 0.05 0.50 V 7, 10
Low level 0.2 V 11
O
p
tical Out
p
ut Monitor Normal Vt
m0.6
Hi
g
h level 1.1
Supply Current Idtx mA
- 5 / 7 -
(SCM7591-XC)
Specification : TS-S97D014C
Date : March, 2001
6-2. Receiver side
7. Optical Interface
( Unless otherwise specified, Vcc = 3.14 to 3.47 V and all operating temperature shall apply. )
7-1. Transmitter side
Warning
Do not look at the laser beam projection area (e.g. end of optical connector) with naked eyes or through optical equipment while
the power is supplied to this product. Otherwise, your eyes may be injured.
Parameter S
y
mbol min. T
yp
.Max.Unit Note
Avera
g
e Out
p
ut Power Po -15.0 -8.0 dBm 1
Extinction Ratio Er 8.2 dB 1
Center Wavelen
g
th λc 1261 1360 nm
S
p
ectral Width
(
RMS
)
∆λ 7.7 nm
E
y
e Mask for O
p
tical Out
p
ut Refer to Fi
g
ure 6
Note 1. Measured at 155.52Mbps PRBS2^23-1
Note
1. Output current is not included. 155.52Mbps, PRBS2^23-1.
2. Vcc=+3.3V, Tc=25°C, Output load resistance Rl=50Ω to
Vcc-2V for RD, RDb and FLAG.
3. 20~80%
4. 155.52Mbps, PRBS 2^23-1, NRZ
5. The relationship between the Optical Input Power and the
Optical Input Monitor Voltage is shown in Figure 5.
Parameter S
y
mbol min. T
yp
. Max. Unit Note
Su
pp
l
y
Volta
g
e Vcc 3.14 3.30 3.47 V
Su
pp
l
y
Current Idrx 95 125 m A 1
Data and SD
(
FLAG
)
Hi
g
h Voh Vcc-1.10 Vcc-0.86 V 2
Out
p
ut Volta
g
e Low Vol Vcc-1.86 Vcc-1.62
Data Rise / Fall Time Trd / Tfd 1000
p
sec. 3
SD
(
FLAG
)
Assert Time Ta 100 µsec 4
SD
(
FLAG
)
Deassert Time Td 350 µsec
O
p
tical In
p
ut Power Monito
r
@
-20dBm Vr
p
m2.5 V5
@
-34dBm 0.1
Relation between Input Signal
and Optical Output Signal
Input Signal
TD TDb
High Low ON (High)
Low High OFF (Low)
High High Undefined
Low Low Undefined
Optical Output Signal
0
0.5
1
1.5
2
2.5
3
3.5
-50 -40 -30 -20 -10 0 10
RPM(typ.)[V]
Optical Input Power [dBm]
Figure 5. Iutput Power versus the Optical Input Monitor
Voltage (typ.)
0.15 0.35 0.65 0.850.00
1.20
1.00
0.80
0.50
0.20
0.00
-0.20 1.00
Normalized Amplitude
Figure 6 Optical Pulse Mask with Fourth Order
Bessel-Thomson Filter Specified in ITU-T G.957
- 6 / 7 -
(SCM7591-XC)
Specification : TS-S97D014C
Date : March, 2001
9. Reliability Test
8. Relation between Disable Input Voltage and Optical Output Power
7-2. Receiver side
Parameter S
y
mbol min. T
yp
. Max. Unit Note
Center Wavelen
g
th - 1261 1580 nm
Minimum Sensitivit
y
Pmin -28.0 dBm 1, 2
Overload Pmax -8.0 dBm 1, 2
Fla
g
Assert Level Pa -37 dBm
Fla
g
Deassert Level Pd -40 dBm
FLAG Hysteresis Phys 3 dB
Note 1. BER=10^-10
2. Measured at the bit rate of 155.52Mbps, PRBS 2^23-1, NRZ
2
Disable In
p
ut Volta
g
eO
p
tical Out
p
ut Power
"L"
(
0.0 ~ 0.8V
)
Enabled
"H"
(
2.0V ~ Vcc
)
Disabled
(
<-45dBm
)
GR-468-CORE Issue 1, December 1998 Laser Module
HEADING TEST REFERENCE CONDITIONS SAMPLING ENV'T Sumitomo Result
LTPD SS C CO RT/ SS Pass/Fail
UNC
Mechanical MIL-STD-883 5 times/axis
Shock Method 2002 w/o TEC 1,500G, 0.5ms 20 11 0 R R 11 Pass
Vibration MIL-STD-883 Cond. A 20G, 20-2,000G 20 11 0 R R 11 Pass
Mechanical Method 2007 Hz, 4min/cy, 4cy/axis
Integrity Thermal Shock MIL-STD-883 Delta T=100degC 20 11 0 R R 11 Pass
Method 1011 0degC to 100degC
Solderability MIL-STD-883 (steam aging not 20 11 0 R R 11 Pass
Method 2003 required)
Accel. Aging (R)-4-53 Section 85degC; rated power -
(High Temp.) 5.18 2,000 hrs. - 25 - R 25 Pass
5,000 hrs. 10 O 25 Pass
Endurance Low Temp. - min, storage T 20 11 0 O O 11 Pass
Storage 2,000 hrs.
Temperature Section 5.20 -40degC to +85degC
Cycling 500 pass/fail 20 11 0 - R 11 Pass
1,000 for info. - 11 - - R 11 Pass
Damp Heat MIL-STD-202 85degC/85%RH 1,000hrs. 20 11 0 R R 11 Pass
Method 103 or
IEC-68-2-3
Cyc. Moist,. Res. Sec. 5.23 - 20 11 0 - R 11 Pass
Special Tests Internal MIL-STD-883 Max. 5,000ppm water 20 11 0 R R 11 Pass
Moisture Method 1018 vapour
ESD Threshold Section 5.22 - 6 - R R 6 -----
LTPD (in %); min. acceptable sample size(SS) and corresponding number of allowed failures (C)
CO; Conditional Objective
RT/UNC; Room Temp. / Uncontrol
R; Requirement
O; Objective
- 7 / 7 -
(SCM7591-XC)
Specification : TS-S97D014C
Date : March, 2001
10. Laser Safety
This product uses a semiconductor laser system and is a laser class 1 product acceptable FDA, complies with
21CFR 1040. 10 and 1040.11. Also this product is a laser class 1 product acceptable IEC 825-1.
11. Other Precaution
Under such a strong vibration environment as in automobile, the performance and reliability are not guaranteed.
The governmental approval is required to export this product to other countries. To dispose of these compo-
nents, the appropriate procedure should be taken to prevent illegal exportation.
This module must be handled, used and disposed of according to your company's safe working practice.
12. Ordering Information
13. For More Information
Caution
Be sure to turn the power off when you touch this product connected to the printed circuit boards. Otherwise, electric shock may occur.
Dispose this product or equipment including this product properly as an industrial waste according to the regulations.
Warning
Be sure to carry out correct soldering for connection to peripheral circuits in order to prevent contact failure or short-circuit. Other-
wise, a strong laser beam may cause eye injury, overheating or fire.
Do not put this product or components of this product into your mouth. This product contaions material harmful to health.
U.S.A.
ExceLight Communications, 4021 Stirrup Creek Drive, Suite 200 Durham, NC 27703
Tel. +1-919-361-1600 / Fax. +1-919-361-1619
E-mail: info@excelight.com
http://www.excelight.com
Europe
Sumitomo Electric Europe Ltd., 220, Centennial Park, Elstree, Herts, WD6 3SL, United Kingdom
Tel. +44-208-953-8681
Fax. +44-208-207-5950
E-mail: photonics@sumielectric.com
http://www.sumielectric.com
Japan
Sumitomo Electric Industries, Ltd. ( International Business Division ), 3-12, Moto-Akasaka 1-chome
Minato-ku Tokyo 107-8468
Tel. +81-3-3423-5771 / Fax. +81-3-3423-5099
E-mail: product-info@ppd.sei.co.jp
http://www.sei.co.jp/Electro-optic/index_e.html
Ordering Number Connector type Operating Temparature
SCM7591-XC SC Duplex Connector Tc = -5~70°C
SCM7591-XC-W SC Duplex Connector Tc = -40~85°C