OPTOWAY LT-94B73B-PWG

Optoway
LT-94B73B-PWG
1
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LT-94B73B-PWG / LT-94B73B-PW-AG
(RoHS Compliant)
3.3V / 2.488 Gbps 1490 nm Continuous-Mode TX /
1.244 Gbps 1310 nm Burst-Mode RX with Burst-Mode Signal Detect,
ITU-T G.984.2 G-PON CLASS B+ 2X6 SFF OLT Transceiver (with Reset-Less RX)
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FEATURES
l Class B+ Optical Line Terminal (OLT) for ITU-T G.984.2
Gigabit-capable PON
l 2.488 Gbps / 1490 nm Continuous-Mode Transmitter
l 1.244 Gbps / 1310 nm Burst-Mode Receiver with 2R
Output
l Resetless BM Receiver Design
l BM RX with 32 Bits Packet-to-packet Guard Time for
over 15dB Packet Optical Power Difference
l 0 to 70oC Operating: LT-94B73B-PWG
l -20 to 85oC Operating: LT-94B73B-PW-AG
l 2x6 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 LVTTL TX Shutdown Input
l LVTTL TX Laser Failure Alarm Output
l LVTTL High-Speed Burst-mode RX Signal Detect
l Analog RX Received Power Monitor
l Wave Solderable and Aqueous Washable
l Class 1 Laser International Safety Standard IEC-60825
Compliant
ORDER INFORMATION
P/No
l Broadband G-PON System
DESCRIPTION
LT-94B73B series is ITU-T G.984.2 Class B+ optical line
terminal (OLT) for 2.488 Gbps/1490 nm in downstream and
1.244 Gbps/1310 nm in upstream. The transmitter section uses
a multiple quantum well 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 detector preamplifier (IDP) 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.
TX
Class
Type
Speed
λ (nm)
(Gb/s)
LT-94B73B-PWG
APPLICATIONS
RX
Temp
Power Type
Speed λ (nm) Sens.
(dBm)
(Gb/s)
Package
(oC)
RoHS
Compliant
(dBm)
B+
CNT
2.488
1490 DFB
1.5 / 5 BM, 2R 1.244
1310
-8 / -28 0 / 70
SFF 2X6
Yes
LT-94B73B-PW-AG B+
CNT
2.488
1490 DFB
1.5 / 5 BM, 2R 1.244
1310
-8 / -28 -20 / 85
SFF 2X6
Yes
LT-94C73C-PWG
CNT
2.488
1490 DFB
7 / 3 BM, 2R 1.244
1310
-8 / -29 0 / 70
SFF 2X6
Yes
C
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.
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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]w http: // www.optoway.com.tw
5/1/2006 V1.0
Optoway
LT-94B73B-PWG
2
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Absolute Maximum Ratings
Parameter
Storage Temperature
Operating Case Temperature
Symbol
Tstg
Topr
Min
-40
0
-20
Max
85
70
85
Units
o
C
o
C
Vcc
-0.5
3.6
V
Symbol
Vcc
Topr
Min
3.13
0
-20
Max.
3.47
70
85
Unit
V
o
C
350
mA
Power Supply Voltage
Notes
LT-94B73B-PWG
LT-94B73B-PW-AG
Air flow 1m/sec @>60 oC
Recommended Operating Conditions
Parameter
Power Supply Voltage
Operating Case Temperature
Power Supply Current
ICC (TX+RX)
Units / Notes
V
LT-94B73B-PWG
LT-94B73B-PW-AG
Air flow 1m/sec @>60 oC
Transmitter Specifications ( 0oC < Topr < 70oC, 3.13V < Vcc < 3.47V )
Parameter
Symbol
Min.
Optical
Optical Transmit Power
Po
1.5
Output Center Wavelength
1480
λ
Δλ
Output Spectrum Width
SMSR
Side Mode Suppression Ratio
30
Extinction Ratio
ER
10
Data Rate
Optical Rise Time
Optical Fall Time
Relative Intensity Noise
RIN
Downstream Optical Penalty
Electrical
Data Input Current – Low
-350
Data Input Current – High
Differential Input Voltage
VIH - VIL
400
Shutdown Input Voltage -- Low
VTSHDN,L
0
Shutdown Input Voltage -- High
VTSHDN,H
2.0
TX Laser Alarm Voltage -- Low
V TLF,L
0
TX Laser Alarm Voltage -- High
V TLF,H
2.0
Shut Off Time for Tx Shutdown
tDIS
1. Output power is power coupled into a 9/125 µm single mode fiber.
Typ.
Max.
Units
Notes
5
1500
1
dBm
nm
nm
dB
dB
Gb/s
ps
ps
dB/Hz
dB
1
2.488
150
150
-120
0.5
350
2400
0.8
Vcc
0.5
Vcc
30
µA
µA
mV
V
V
V
V
µs
-20 dB Width
20% to 80% Values
20% to 80% Values
Peak-to-Peak
TX Output Disable
TX Output Enable
TX laser normal
TX laser fail
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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
5/1/2006 V1.0
Optoway
LT-94B73B-PWG
3
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Receiver Characteristics ( 0oC < Topr < 70oC, 3.13V < Vcc < 3.47V )
Parameter
Symbol
Optical
Sensitivity
Saturation Optical Power
Wavelength of Operation
Data Rate
Packet-to-Packet Guard Time
DC Optical Tolerance
Optical Return Loss
Signal Detect -- Asserted
Signal Detect -- Deasserted
Signal detect -- Hysteresis
Electrical
Data Output Voltage – Low
Data Output Voltage – High
Consecutive Identical Digit Immunity
Signal Detect Output Voltage -- Low
Signal Detect Output Voltage -- High
Signal Detect Assert Time
Signal Detect Deassert Time
Received Power Monitoring Voltage
Rest Between Packet
Sen
Sat
Min.
Typ.
-8
1260
Max.
Units
Notes
-28
dBm
dBm
nm
Gb/s
Bits
dB
dB
dBm
dBm
dB
2
2
3
1360
1.244
32
Sen +3
20
Pa
Pd
VOL
VOH
VOL
VOH
ASMAX
ANSMAX
VRPM
-28
-40
2
Vcc - 1.935
Vcc -1.135
72
Vcc - 1.56
Vcc - 0.76
0.5
2.0
10
80
15
100
30
150
V
V
Bits
V
V
ns
ns
V
4,5
Transition: low to high
Transition: high to low
Transition: low to high
Transition: high to low
Refer Figure 3.
Resetless
2. Sensitivity and saturation levels at BER 1E-10 for a 223-1 @ER=10.
3. At least 30 dB optical isolation for the wavelength 1480 to 1500 nm.
4. No reset is needed.
5. The optical power difference between neighboring packets is up to 15 dB.
CONNECTION DIAGRAM
PIN
Signal Name
Description
PIN
Signal Name
A
RPM
Receiver Power Monitor.
B
LF
1
RX Ground
10
TD-
2
RX Vcc
9
TD+
3
RX SD
Receiver Ground. Connect this pin to
ground plane.
RX power supply input. Connect to 3.3
V power supply
Signal Detect. High when single is
present (LVTTL)
8
TxDis
4
RX OUT (-)
7
TX Ground
5
RX OUT (+)
Negative RX output, Differential
LVPECL. DC coupled.
Positive RX output, Differential
LVPECL. DC Coupled.
Mounting Studs. Connect to Chassis
Ground
6
TX Vcc
MS
MS
Description
Laser failure warning out. This pin is
high when LD fails.
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
*****************************************************************************************************************************************************************************
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
5/1/2006 V1.0
Optoway
LT-94B73B-PWG
4
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PACKET-TO-PACKET SPACING
1.244 Gbps, BER < 10 -10
tg=25 ns
-13 dBm
BM Receiver
Output
-28 dBm
Hi-Lo Optical
Input
Figure 1. High-Low packet test at Hi/Lo ratio=15 dB
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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
5/1/2006 V1.0
Optoway
LT-94B73B-PWG
5
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TIME CHARACTERISTICS OF SIGNAL DETECT
RX Output
Signal Detect
Figure 2. Timing characteristics of Signal Detect. Signal Detect: Low to High ~20 ns, High to Low ~100 ns (> 100 bit “0”)
INCOMING OPTICAL POWER V.S. THE MONITORING ANALOG VOLTAGE
Received Power Monitor Voltage VRPM (mV)
1200
1000
800
600
400
200
0
-35
-30
-25
-20
-15
-10
-5
0
Average Optical Input Power (dBm)
Figure 3. Relation between Power Monitor Output (PIN “A”) and Average Incoming Optical Power
*****************************************************************************************************************************************************************************
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
5/1/2006 V1.0
Optoway
LT-94B73B-PWG
6
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RECOMMENDED CIRCUIT SCHEMATIC
TX FAULT
TX GND
7
8
TX Disable
Vcc3.3V
B
LD
Driver
TX+
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
Post
Amp
RX-
4
RX+
5
130R
TD-
Z=50R
LVPECL
TD+
Z=50R
SD
3
RX GND
1
RPM
A
Signal Detect
82R
82R
CDR or PHY DEVICE
Receiver Power Monitor
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.
*****************************************************************************************************************************************************************************
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
5/1/2006 V1.0
Optoway
LT-94B73B-PWG
7
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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
5/1/2006 V1.0