Page 1
Key Features
• Provides 1510 nm supervisory channel
laser source for WDM applications
according to ITU-T draft G.691
• Average power control
• Small size (40x70x9 mm)
• CMOS alarm output
• Thermoelectric cooler included
• P-ECL data inputs
• Tone modulation input
• Single 5.0 V supply
PGT 601 06
1510 nm Transmitter Module
for Supervisory
Channel Applications
Applications
• 1510 nm supervisory channel applications in WDM systems
Description
The transmitter module is intended for use at SDH and SONET bit rates. The
device meets the intention of the ITU-T (G.691) recommendations.
The single silicon IC is used as a laser driver, modulator and automatic power
control. To ensure a proper laser operation over the wide temperature range
and life of operation, the average optical output power is controlled. The
laser bias is externally accessible for monitoring of the performance. A power
alarm is activated when the average optical power cannot be maintained
within specification. A laser shut-down is also provided according to SDH/
SONET requirements.
1
Page 2
PGT 601 06
TONE
MODULATION
DATA
LASER
SHUT
DOWN
Figure 1. Block diagram
Pin Connection
1. NC
2. Laser shut down
3. V
CClaser
4. Laser bias current
monitor
5. NC
6. NC
7. Laser control circ.
out of range
8. NC
9. Temp Monitor
10. NC
11. V
CCcooler
12. Temp Low Alarm
13. Temp High Alarm
14. NC
15. NC
16. V
CCcoler
17. GND
18. GND
19. NC
20. NC
21. NC
22. GND
23. Data_N
24. Data
25. V
P-ECL
26. Tone modulation input
27. V
CCdriver
28. GND
P-ECL
INPUT
LASER
SAFETY
CIRCUIT
OUTPUT
DRIVER
OUTPUT
POWER
CONTROL
OUTPUT
POWER
ALARM
BIAS
MONITOR
LASER
PACKAGE
TEMP.
CONTROL
TEMP.
ALARM &
MONITOR
OPTICAL
FIBER
Figure 2. Mechanical outline and pin description
2
Page 3
PGT 601 06
Optical Characteristics
Electrical and optical characteristics over recommended operating conditions, unless otherwise noted.
Parameter Conditions Symbol Min Typ Max Unit
Peak wavelength λ
P
Bit rate 2 155 Mb/s
Average output power EOL P -3 +2 dBm
Side mode supression ratio SMSR 30 dB
Extinction ratio EOL EX 10 dB
Eye diagram G.957 ITU-T
Electrical Characteristics
Parameter Conditions Symbol Min Typ Max Unit
Power supply 4.7 5.3 V
Operating current without TEC 200 mA
Power supply TEC 3.0 5.3 V
Operating current TEC 650 mA
Input data P-ECL
Transmitter disable CMOS
Laser control circuitry out of range CMOS
Recommended Operating Conditions
Parameter Symbol Min Typ Max Unit
Operating case temperature T
Case
1502 1518 nm
070°C
Absolute Maximum Ratings
Parameter Symbol Min Max Unit
Storage temperature T
Sto
Supply voltage -0.5 6.0 V
CAUTION: Stresses outside those listed in ”Absolute Maximum Ratings” may cause permanent damage to the device.
This is a stress only rating and operation of the device at these or any other conditions above those indicated in the
operational sections of this specification is not implied.
-40 85 °C
3
Page 4
PGT 601 06
Handling Precautions
This device may be damaged as a result of electrostatic
discharge (ESD). Take proper precautions during both handling and testing. This typically includes grounded wrist
wraps, workbenches and floor mats in ESD controlled areas.
Semiconductor devices may be damaged by current surges,
use appropriate transient protection.
Quality Assurance
Ericsson Microelectronics commitment to quality has been
proven through a decade of semiconductor device production and has been confirmed to ISO 9001. Opto product
qualification is made according to the intention of applicable
Telcordia standards.
Connector Options
FC/PC
SC
(Other connectors available on request)
DANGER
DANGER
INVISIBLE LASER RADIATION
AVOID DIRECT EXPOSURE TO BEAM
WAVELENGTH 1300 nm - 1600 nm
CLASS 3B LASER
Information given in this data sheet is believed to be accurate and reliable.
However no responsibility is assumed for the consequences of its use nor for
any infringement of patents or other rights of third parties which may result
from its use. No license is granted by implication or otherwise under any
patent or patent rights of Ericsson Microelectronics. These products are sold
only according to Ericsson Microelectronics' general conditions of sale, unless
otherwise confirmed in writing.
Product specifications subject to change without notice.
Ericsson Microelectronics AB
SE-164 81 Kista, Sweden
Telephone: +46 8 757 50 00
www.ericsson.com/microelectronics
For local sales contacts, please refer to our website
or call: Int + 46 8 757 47 00, Fax: +46 8 757 47 76
1522-PGT 601 06 Rev. E
© Ericsson Microelectronics AB, November 2000
4
Loading...