OPTOWAY LT-74H73H-PG

Optoway
LT-74H73H-PG
1
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LT-74H73H-PG
(RoHS Compliant)
3.3V, 1.25 Gbps 1490 nm Continuous-Mode TX / 1.25 Gbps 1310 nm Burst-Mode RX
2X5 SFF Package, GE-PON OLT Transceiver (IEEE 802.3ah-2004 1000BASE PX20+)
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FEATURES
l Optical Line Terminal (OLT) for IEEE 802.3ah-2004
1000BASE-PX20+
l 1-Fiber Bi-directional 1.25 Gbps WDM Transceiver for 20
km communication
l 1490 nm Continuous-Mode Transmitter
l 1310 nm Burst-Mode (BM) Receiver
l Resetless BM Receiver Design
l BM RX with Transceiver Settling Time less than 400 ns
l High Resistance of BM RX to DC Optical Background
l 0 to 70oC Operating Temperature
l 2x5 SFF Package with SC/PC Pigtail
l Single +3.3 V Power Supply
l RoHS Compliant
l Transmitter: AC Coupling Input
l Receiver: DC Coupling Output
l LVPECL Differential Inputs and Outputs
l LVTTL TX Shutdown Input
l LVTTL TX Laser Failure Alarm Output
l Wave Solderable and Aqueous Washable
l Class 1 Laser International Safety Standard IEC-60825
Compliant
APPLICATIONS
l Gigabit Ethernet PON System
DESCRIPTION
LT-74H73H is an optical transceiver for optical line terminal (OLT)
for IEEE 802.3ah-2004 1000BASE-PX20+ applications. The
LT-74H73H is high performance module for single fiber
communications by using 1490 nm continuous-mode transmitter and
1310 nm high sensitivity burst-mode receiver with settling time less
than 400 ns. The transmitter section uses a 1490 nm DFB laser and is
a class 1 laser compliant according to International Safety Standard
IEC-60825. The receiver section uses an integrated 1310 nm
burst-mode Avalanche photodetector preamplifier mounted in an
optical header and a burst-mode limiting post-amplifier IC. Unlike
the conventional BM RX, the RX does not requires reset pulse to
receive optical data packets with different optical power.
LVPECL interface is used for differential inputs and outputs. A
LVTTL logic interface simplifies interface to external circuitry.
LASER SAFETY
This single mode transceiver is a Class 1 laser product. It
complies with IEC-60825 and FDA 21 CFR 1040.10 and
1040.11. The transceiver must be operated within the
specified temperature and voltage limits. The optical ports of
the module shall be terminated with an optical connector or
with a dust plug.
ORDER INFORMATION
ORDER INFORMATION
P/No
TX
Class
Type
Speed
λ (nm)
RX
Power Type
Temp
Speed λ (nm) Sens.
(Gb/s)
(dBm)
(Gb/s)
LT-74H73H-PG
PX20+ CNT
1.25
1490 DFB
7 / 2 BM, 2R 1.25
1310
NOTE: 1. LT-XXXXXX-PWXG, SC/PC pigtail with fiber length 50 cm.
2. BM: Burst Mode; CNT: Continuous Mode; SFF: Small Form Factor Package.
Package
o
( C)
(dBm)
-8 / -30 0 / 70 SFF 2X5 Pig.
RoHS
Compliant
Yes
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OPTOWAY TECHNOLOGY INC. No.38, Kuang Fu S. Road, Hu Kou, Hsin Chu Industrial Park, Hsin Chu, Taiwan 303
Tel: 886-3-5979798
Fax: 886-3-5979737
E-mail: [email protected] http: // www.optoway.com.tw
3/1/2006 V1.0
Optoway
LT-74H73H-PG
2
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Absolute Maximum Ratings
Parameter
Power Supply Voltage
Input Voltage
Output Current
Operating Case Temperature
Storage Temperature
Soldering Temperature
Tension of Fiber
Bending Radius of Fiber
Symbol
Min.
Max.
Unit
Vcc
0
GND
0
0
-40
4
Vcc
30
70
85
260
500
V
V
mA
o
C
o
C
o
C
g
mm
Iout
Topr
Tstg
30
Notes
With air flow 1m/sec
10 seconds on leads only
Stress in excess of the maximum absolute ratings can cause permanent damage to the module.
Recommended Operating Conditions
Parameter
Power Supply Voltage
Operating Case Temperature
Supply Current
Symbol
Min.
Max.
Unit
Vcc
Topr
Icc TX+RX
3.13
0
3.47
70
300
V
o
C
mA
Notes
3.3 V +/- 5%
With air flow 1m/sec
Transmitter Specifications ( 0oC < Topr < 70oC, 3.13V < Vcc < 3.47V )
Parameter
Symbol
Min.
Typ.
Max.
Optical
Optical Transmit Power
Po
2
7
Output Center Wavelength
1480
1500
λ
Δλ
Output Spectrum Width
1
SMSR
Side Mode Suppression Ratio
30
Extinction Ratio
ER
9
Data Rate
1.25
Optical Rise Time
0.26
Optical Fall Time
0.26
Relative Intensity Noise
RIN
-120
Total Jitter
0.15
Electrical
Data Input Current – Low
-350
Data Input Current – High
350
Differential Input Voltage
VIH - VIL
150
2000
Data Input Voltage – Low
VIL - VCC
-2.0
-1.58
Data Input Voltage -- High
VIH - VCC
-1.1
-0.74
Shutdown Input Voltage -- Low
VTSHDN,L
0
0.5
Shutdown Input Voltage -- High
VTSHDN,H
2.0
Vcc
Shut Off Time for Tx Shutdown
tDIS
30
1. Output power is power coupled into a 9/125 µm single mode fiber.
2. These inputs are compatible with 10K, 10KH and 100K ECL and LVPECL inputs.
Units
Notes
dBm
nm
nm
dB
dB
Gb/s
ns
ns
dB/Hz
ns
1
µA
µA
mV
V
V
V
V
µs
-20 dB Width
20% to 80% Values
20% to 80% Values
2
2
TX Output Disable
TX Output Enable
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OPTOWAY TECHNOLOGY INC. No.38, Kuang Fu S. Road, Hu Kou, Hsin Chu Industrial Park, Hsin Chu, Taiwan 303
Tel: 886-3-5979798
Fax: 886-3-5979737
E-mail: [email protected] http: // www.optoway.com.tw
3/1/2006 V1.0
Optoway
LT-74H73H-PG
3
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Receiver Characteristics ( 0oC < Topr < 70oC, 3.13V < Vcc < 3.47V )
Parameter
Symbol
Min.
Typ.
Max.
Units
Notes
Optical
Sensitivity
Sen
-30
dBm
3
Saturation Optical Power
Sat
-8
dBm
3
Wavelength of Operation
1260
1360
nm
4
Data Rate
1.25
Gb/s
Settling Time
400
ns
5, 6
DC Optical Tolerance
Sen +3
dB
Optical Return Loss
20
dB
Electrical
Data Output Voltage – Low
VOL - VCC
-2.0
-1.58
V
7
Data Output Voltage – High
VOH - VCC
-1.1
-0.74
V
7
Rest Between Packet
Resetless
3. Sensitivity and saturation levels at BER 1E-12 @ [email protected]=10. The burst packet data pattern follows 8B10B protocol.
4. At least 30 dB optical isolation for the wavelength 1480 to 1500 nm.
5. No reset is needed.
6. The optical power difference between neighboring packets is up to 15 dB.
7. These inputs are compatible with 10K, 10KH and 100K ECL and LVPECL outputs.
CONNECTION DIAGRAM
PIN
Signal Name
1
RX Ground
2
RX Vcc
3
NC
4
RX OUT (-)
5
RX OUT (+)
MS
MS
Description
PIN
Receiver Ground. Connect this pin to
ground plane.
RX power supply input. Connect to 3.3
V power supply
No connection
10
TD-
Signal Name
9
TD+
8
TxDis
Negative RX output, Differential
LVPECL. DC coupled.
Positive RX output, Differential
LVPECL. DC Coupled.
Mounting Studs. Connect to Chassis
Ground
7
TX Ground
6
TX Vcc
Description
Negative transmitter data In. Internally
terminated for LVPECL. AC coupled.
Positive transmitter data In. Internally
terminated for LVPECL. AC coupled.
Transmitter Disable. TX is disabled
when this pin is low. Internally pulled to
“High”..
Transmitter Ground. Directly connect
this plan to ground plane
TX power supply input. Connect to 3.3
V power supply
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OPTOWAY TECHNOLOGY INC. No.38, Kuang Fu S. Road, Hu Kou, Hsin Chu Industrial Park, Hsin Chu, Taiwan 303
Tel: 886-3-5979798
Fax: 886-3-5979737
E-mail: [email protected] http: // www.optoway.com.tw
3/1/2006 V1.0
Optoway
LT-74H73H-PG
4
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RECOMMENDED CIRCUIT SCHEMATIC
TX GND
7
8
LD
Driver
TX+
TX Disable
Vcc3.3V
9
Z=50R
LVPECL
100R
TX-
10
TX Vcc
6
Z=50R
Vcc 3.3V
1uH
RX Vcc
10nF
10uF
10nF
10uF
1uH
2
Vcc 3.3V
Vcc 3.3V
130R
RXPost
Amp
130R
4
TD-
Z=50R
RX+
LVPECL
5
TD+
Z=50R
82R
RX GND
82R
1
CDR or PHY DEVICE
SFF OLT Module
PACKAGE DIAGRAM
Units in mm
Note: Specifications subject to change without notice. The 50 +/- 3 cm long pigtail with a SC/PC connector is standard. If
non-standard pigtail is required, please make a contact with Optoway Technology Inc.
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OPTOWAY TECHNOLOGY INC. No.38, Kuang Fu S. Road, Hu Kou, Hsin Chu Industrial Park, Hsin Chu, Taiwan 303
Tel: 886-3-5979798
Fax: 886-3-5979737
E-mail: [email protected] http: // www.optoway.com.tw
3/1/2006 V1.0
Optoway
LT-74H73H-PG
5
*****************************************************************************************************************************************************************************
RECOMMENDED CIRCUIT BOARD LAYOUT
Notes:
1. This figure describes the recommended circuit board layout for the SFF OLT Transceiver.
2. The hatched areas are keep-out areas reserved for housing standoff. No metal traces or ground connection in keep-out
area.
3. The mounting studs should be solder to chassis ground for mechanical integrity.
*****************************************************************************************************************************************************************************
OPTOWAY TECHNOLOGY INC. No.38, Kuang Fu S. Road, Hu Kou, Hsin Chu Industrial Park, Hsin Chu, Taiwan 303
Tel: 886-3-5979798
Fax: 886-3-5979737
E-mail: [email protected] http: // www.optoway.com.tw
3/1/2006 V1.0