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PDF LTB3468 Data sheet ( Hoja de datos )
| Número de pieza | LTB3468 | |
| Descripción | GPON ONU Transceiver | |
| Fabricantes | Ligent | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de LTB3468 (archivo pdf) en la parte inferior de esta página. Total 17 Páginas | ||
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Ligent
in telligen t phot onics
LTB3468 Series GPON ONU Transceiver
CLASS B+ 1244/2488Mb/s With Tx_Indication
T he LTB3468 Series Modules are low-cost 2488Mb/s downstream and 1244Mb/s upstream GPON bidi-
rectional transceivers designed to meet the requirements of the ITU-T G.984.2 and the ITU-T G.984.5
specifications for point-to-multi point service in advanced “triple play” Optical Network Termination (ONT) or
Optical Network Unit (ONU) equipment. They incorporate a high performance 1310nm burst mode DFB
transmitters and 1490nm CW mode APD receivers. The Receiver Signal Detect (Rx_SD), Transmit Burst
Control (Tx_Burst), Transmit Fault (Tx_FAULT) and the 8472 I2C diagnostic interface monitor and control
functions are LVTTL compatible. The device parameters can be accessed in real time by the I2C data inter-
face, including the ALARM and WARNING values for temperature, Vcc, Icc, Tx Burst Mode Optical Power
and RSSI. The industry standard 2x10 small form factor (SFF) package incorporates a fiber pigtail with SC/
PC connector or SC optical receptacle. They are fabricated with a rugged die cast metal housing and cage
assembly, are Class I laser safety compliant and meet the EEC Directive 2002/95/EC for RoHS6 compliance.
2x10 SFF with SC/PC Pigtail
2x10 SFF with SC Receptacle
Applications
• Access Networks
• Fiber to the Home, Curb, Office (FTTx)
• Point to Multi Point Service (P2MP)
• ITU-T G.984.2
• ITU-T G.984.5 Filter
• FSAN Class B+
• SFF-8472
Bidirectional Transceiver
• Dual Lambda Bidirectional Transceiver
• Single 3.3V DC supply
• Low Power Consumption
• Full Duplex Operation
• RoHS6 Compliant
Upstream Burst Mode Transmitter
• 1310nm DFB Burst Mode Laser
• 1244Mb/s Data Rate
• Tx Power Level Control*
• LVPECL Differential Data Interface
• Internally DC Coupled and Terminated
• LVTTL Tx Burst Control Input
• LVTTL Tx Fault Monitor Output
Downstream CW Mode Receiver
• 1490nm APD/TIA CW Mode Receiver
• 2488Mb/s Data Rate
• BER<10-10, 2488Mb/s, PRBS 223-1
• CML Differential Data Interface
• Internally AC Coupled
• LVTTL Rx Signal Detect Monitor Output
Case Operating Temperature Options:
• Commercial: 0 to 70°C
• Industrial: -40 to 85°C
Active I2C Interface
• I2C Serial Clock
• I2C Serial Data (SFF8472)
• Module Temperature
• Vcc
• Bias
• Rx RSSI
• Tx Burst Mode Peak Optical Power
Package Options
• 2x10 SFF with SC/APC Pigtail
• 2x10 SFF with SC/UPC Pigtail
• 2x10 SFF with SC Receptacle
ITU-T Compliance
• G.984.2 (LTB3468)
• G.984.5 (LTB3468-XXG)
* Relative to the actual maximum module
optical output power
Recommended Operating Conditions
Parameter
Case Operating Temperature
Module Supply Voltage
Module Supply Current
Downstream Signaling Speed +/- 100 ppm
Upstream Signaling Speed +/- 100 ppm
Symbol
Tcase
VCC
IIN
Sdown
Sup
Min
0
-40
3.135
-
-
-
Typ
25
25
3.3
-
2488
1244
Max
70
85
3.465
400
-
-
Units
ºC
ºC
V
mA
Mb/s
Mb/s
Ligent Photonics Incorporated · 602C West Fifth Avenue · Naperville · Illinois 60563 · (630) 995-3951 Page 1 Rev3.1 31 Oct ‘12
1 page  
Ligent
in telligen t phot onics
LTB3468 Series GPON ONU Transceiver
CLASS B+ 1244/2488Mb/s With Tx_Indication
WBF Isolation characteristics (ITU-T G.984.5)
Isolation (dB)
0.5dB
y3
1400
1450
1480 1500
1530
Wavelength (nm)
1625
WBF Isolation characteristics
Wavelength (nm)
～1400 1441
Isolation (dB)
y3
>35
1450
y3
>25
1530
y3
>25
～1539 1625
y3
>35
Ligent Photonics Incorporated · 602C West Fifth Avenue · Naperville · Illinois 60563 · (630) 995-3951 Page 5 Rev3.1 31 Oct ‘12
5 Page 
Ligent
in telligen t phot onics
LTB3468 Series GPON ONU Transceiver
CLASS B+ 1244/2488Mb/s With Tx_Indication
LTB3468 2X10 SFF Pigtail Pin Assignment
1
BOTTOM VIEW
20
10
11
Pin Description
Pin Symbol Description
1 N/C Not Connected
2
VEER
Receiver Ground
3
VEER
Receiver Ground
4 N/C Not Connected
5 N/C Not Connected
6
VEER
Receiver Ground
7
VCCR
Receiver +3.3V DC Power Supply
8 Rx_SD Receiver Signal-Detected Indication
9 RD- Rx_DATA Inverted Differential Output
10 RD+ Rx_DATA Non Inverted Differential Output
11
VCCT
Transmitter +3.3V DC Power Supply
12
VEET
Transmitter Ground
13 Tx_Burst Transmit Burst Control
14 TD+ Tx_DATA Non Inverted Differential Input
15 TD- Tx_DATA Inverted Differential Input
16
VEET
Transmitter Ground
17 SCL I2C Serial Clock
18
SDA
I2C Serial Data
19 Tx_Fault Transmitter Fault
20 Tx_Indication Tx Transmitter State Indication
Notes
1 LVTTL logic output,with internal 10k pull-up resistor
2 The 100 Ohm differential Rx Data output is internally AC coupled and terminated.
3 The 100 Ohm differential Tx Data input is internally DC coupled and terminated.
4 Require a pull up resistor of 4.7k to 10k Ohms.
Notes
1
2
2
3
3
4
4
1
Ligent Photonics Incorporated · 602C West Fifth Avenue · Naperville · Illinois 60563 · (630) 995-3951 Page 11 Rev3.1 31 Oct ‘12
11 Page | ||
| Páginas | Total 17 Páginas | |
| PDF Descargar | [ Datasheet LTB3468.PDF ] | |
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