LT-94B73B-P1G [OPTOWAY]
3.3V / 2.488 Gbps 1490 nm Continuous-Mode TX; 3.3V / 2.488 Gbps的1490纳米连续模式TX
| 型号： | LT-94B73B-P1G |
| 厂家： | 
OPTOWAY TECHNOLOGY INC |
| 描述： | 3.3V / 2.488 Gbps 1490 nm Continuous-Mode TX |
| 文件： | 总6页 (文件大小：243K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
1
Optoway
LT-94B73B-P1G
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LT-94B73B-P1G / LT-94B73B-P1-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+ 2X5 SFF OLT Transceiver (with Reset-Less RX)
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FEATURES
DESCRIPTION
l Class B+ Optical Line Terminal (OLT) for ITU-T G.984.2
Gigabit-capable PON
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.
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-P1G
l -20 to 85oC Operating: LT-94B73B-P1-AG
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 LVTTL TX Shutdown Input
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.
l LVTTL High-Speed Burst-mode RX Signal Detect
l Wave Solderable and Aqueous Washable
l Class 1 Laser International Safety Standard IEC-60825
Compliant
APPLICATIONS
l Broadband G-PON System
ORDER INFORMATION
P/No
Class
TX
λ (nm)
RX
Temp
(oC)
Package
RoHS
Compliant
Type Speed
(Gb/s)
Power Type Speed λ (nm) Sens.
(dBm)
(Gb/s)
(dBm)
LT-94B73B-P1G
B+
CNT 2.488
CNT 2.488
CNT 2.488
1490 DFB 1.5 / 5 BM, 2R 1.244 1310 -8 / -28 0 / 70
SFF 2X5
Yes
Yes
Yes
LT-94B73B-P1-AG B+
LT-94C73C-P1G
1490 DFB 1.5 / 5 BM, 2R 1.244 1310 -8 / -28 -20 / 85 SFF 2X5
1490 DFB 7 / 3 BM, 2R 1.244 1310 -8 / -29 0 / 70 SFF 2X5
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.
*****************************************************************************************************************************************************************************
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: sales@optoway.com.tw http: // www.optoway.com.tw
6/1/2006 V2.0
2
Optoway
LT-94B73B-P1G
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Absolute Maximum Ratings
Parameter
Storage Temperature
Operating Case Temperature
Power Supply Voltage
Symbol
Tstg
Topr
Min
-40
0
Max
85
70
Units
oC
Notes
LT-94B73B-P1G
oC
-20
85
LT-94B73B-P1-AG
Air flow 1m/sec @>60oC
Vcc
-0.5
3.6
V
Recommended Operating Conditions
Parameter
Power Supply Voltage
Symbol
Vcc
Topr
Min
3.13
0
Max.
3.47
70
Unit
V
Units / Notes
V
Operating Case Temperature
oC
LT-94B73B-P1G
-20
85
LT-94B73B-P1-AG
Air flow 1m/sec @>60oC
Power Supply Current
ICC (TX+RX)
350
mA
Transmitter Specifications ( 0oC < Topr < 70oC, 3.13V < Vcc < 3.47V )
Parameter
Symbol
Min.
Typ.
Max.
Units
Notes
Optical
Optical Transmit Power
Output Center Wavelength
Output Spectrum Width
Side Mode Suppression Ratio
Extinction Ratio
Po
1.5
5
1500
1
dBm
nm
1
1480
l
Δλ
nm
-20 dB Width
SMSR
30
10
dB
ER
dB
Data Rate
2.488
Gb/s
ps
Optical Rise Time
150
150
-120
0.5
20% to 80% Values
20% to 80% Values
Optical Fall Time
ps
Relative Intensity Noise
Downstream Optical Penalty
Electrical
RIN
dB/Hz
dB
Data Input Current – Low
Data Input Current – High
Differential Input Voltage
Shutdown Input Voltage -- Low
Shutdown Input Voltage -- High
Shut Off Time for Tx Shutdown
-350
mA
mA
mV
V
350
2400
0.8
VIH - VIL
VTSHDN,L
VTSHDN,H
tDIS
400
0
Peak-to-Peak
TX Output Disable
TX Output Enable
2.0
Vcc
V
30
ms
1. Output power is power coupled into a 9/125 mm single mode fiber.
*****************************************************************************************************************************************************************************
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: sales@optoway.com.tw http: // www.optoway.com.tw
6/1/2006 V2.0
3
Optoway
LT-94B73B-P1G
*****************************************************************************************************************************************************************************
Receiver Characteristics ( 0oC < Topr < 70oC, 3.13V < Vcc < 3.47V )
Parameter
Symbol
Min.
Typ.
Max.
Units
Notes
Optical
Sensitivity
Sen
Sat
-28
dBm
dBm
nm
2
2
3
Saturation Optical Power
Wavelength of Operation
Data Rate
-8
1260
1360
1.244
Gb/s
Bits
dB
Packet-to-Packet Guard Time
DC Optical Tolerance
32
Sen +3
20
4,5
Optical Return Loss
dB
Signal Detect -- Asserted
Signal Detect -- Deasserted
Signal detect -- Hysteresis
Electrical
Pa
Pd
-28
dBm
dBm
dB
Transition: low to high
Transition: high to low
-40
2
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
Rest Between Packet
VOL
VOH
Vcc - 1.935
Vcc -1.135
72
Vcc - 1.56
Vcc - 0.76
V
V
Bits
V
VOL
VOH
0.5
2.0
10
80
V
ASMAX
ANSMAX
15
30
ns
ns
Transition: low to high
Transition: high to low
100
150
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
Description
1
RX Ground
Receiver Ground. Connect this pin to
ground plane.
10 TD-
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”..
2
3
RX Vcc
RX SD
RX power supply input. Connect to 3.3
V power supply
9
8
TD+
Signal Detect. High when single is
present (LVTTL)
TxDis
4
5
RX OUT (-)
RX OUT (+)
Negative RX output, Differential
LVPECL. DC coupled.
Positive RX output, Differential
LVPECL. DC Coupled.
Mounting Studs. Connect to Chassis
Ground
7
6
TX Ground
TX Vcc
Transmitter Ground. Directly connect
this plan to ground plane
TX power supply input. Connect to 3.3
V power supply
MS MS
*****************************************************************************************************************************************************************************
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: sales@optoway.com.tw http: // www.optoway.com.tw
6/1/2006 V2.0
4
Optoway
LT-94B73B-P1G
*****************************************************************************************************************************************************************************
PACKET-TO-PACKET SPACING
1.244 Gbps, BER < 10-10
tg=25 ns
BM Receiver
Output
-13 dBm
-28 dBm
Hi-Lo Optical
Input
Figure 1. High-Low packet test at Hi/Lo ratio=15 dB
*****************************************************************************************************************************************************************************
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: sales@optoway.com.tw http: // www.optoway.com.tw
6/1/2006 V2.0
5
Optoway
LT-94B73B-P1G
*****************************************************************************************************************************************************************************
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”)
RECOMMENDED CIRCUIT SCHEMATIC
7
TX GND
8
TX Disable
Vcc3.3V
LD
Driver
9
TX+
TX-
Z=50R
Z=50R
LVPECL
100R
10
6
TX Vcc
Vcc 3.3V
1uH
10nF
10nF
10uF
1uH
2
4
RX Vcc
Vcc 3.3V
130R
10uF
Vcc 3.3V
LVPECL
130R
82R
RX-
TD-
Post
Z=50R
Z=50R
Amp
RX+
5
3
1
TD+
82R
SD
Signal Detect
RX GND
CDR or PHY DEVICE
SFF OLT Module
*****************************************************************************************************************************************************************************
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: sales@optoway.com.tw http: // www.optoway.com.tw
6/1/2006 V2.0
6
Optoway
LT-94B73B-P1G
*****************************************************************************************************************************************************************************
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.
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: sales@optoway.com.tw http: // www.optoway.com.tw
6/1/2006 V2.0
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