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PDF AFBR-57J5APZ Data sheet ( Hoja de datos )
| Número de pieza | AFBR-57J5APZ | |
| Descripción | Digital Diagnostic SFP 850nm 3.072/2.4576 Gb/s RoHS OBSAI/CPRI Compatible Optical Transceiver | |
| Fabricantes | AVAGO TECHNOLOGIES LIMITED | |
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AFBR-57J5APZ
Digital Diagnostic SFP, 850nm 3.072/2.4576 Gb/s,
RoHS OBSAI/CPRI Compatible Optical Transceiver
Data Sheet
www.DataSheet4U.com
Description
Avago’s AFBR-57J5APZ optical transceiver supports
high speed serial links over multimode optical fiber at
signaling rates up to 3.7Gb/s for wireless base station ap-
plications involving the OBSAI or CPRI protocols, as well
as related applications. The transceiver is compliant with
Small Form Pluggable (SFP) multi-source agreements INF-
8074 and SFF-8472 for mechanical and electrical specifi-
cations and FOCIS/IEC specifications for optical duplex LC
connectors.
As an enhancement to the conventional SFP interfaced
defined in INF-8074, the AFBR-57J5APZ is compliant to
SFF-8472 (Digital Diagnostic Interface for Optical Trans-
ceivers). Using the 2-wire serial interface defined in SFF-
8472, the transceiver provides real time temperature,
supply voltage, laser bias current, laser average output
power and received input power. This information is in
addition to conventional SFP base data. The digital diag-
nostic interface also adds the ability to disable the trans-
mitter and monitor the status of transmitter fault and
receiver loss of signal.
Related Products
• AFBR-57R5AEZ: 850nm +3.3V LC SFP for 4.25/2.125/
1.0625 GBd Fibre Channel
• AFBR-57R6AEZ: 850nm +3.3V LC SFP for 4.25/2.125/
1.25/1.0625 GBd Fibre Channel and Ethernet with
Rate_Select
• AFBR-59R5LZ: 850nm +3.3V LC 2x7 SFF for 4.25/2.125/
1.0625 GBd Fibre Channel
• AFBR-57D5APZ: 850nm +3.3V LC SFP for 8.5/4.25/
2.125 GBd Fibre Channel
Features
• Fully RoHS Compliant
• Diagnostic Features Per SFF-8472 “Diagnostic
Monitoring Interface for Optical Transceivers”
• Real time monitors of:
o Transmitted Optical Power
o Received Optical Power
o Laser Bias Current
o Temperature
o Supply Voltage
• Industrial Temperature and Supply Voltage Operation
(-40°C to 85°C) (3.3V ± 10%)
• Transceiver Specifications per SFP (INF-8074) and SFF-
8472 (revision 9.6)
• Up to 300m with 50μm OM3 for 3.7 Gb/s
• Up to 400m with 50μm OM3 for OBSAI 3.072 Gb/s
• Up to 500m with 50μm OM3 for CPRI 2.457 Gb/s
• LC Duplex optical connector interface conforming to
ANSI TIA/EIA604-10 (FOCIS 10A)
• 850nm Vertical Cavity Surface Emitting Laser (VCSEL)
Source Technology
• IEC 60825-1 Class 1/CDRH Class 1 laser eye safe
• Compatible with Fibre Channel and Gigabit Ethernet
applications
Applications
Wireless and cellular base station system interconnect
OBSAI rates 3.072 Gb/s, 1.536 Gb/s, 0.768 Gb/s
CPRI rates 2.4576 Gb/s, 1.2288 Gb/s, 0.6144 Gb/s
1 page  
Tx_DISABLE
Tx_FAULT
PROTOCOL IC
SERDES IC
3.3 V
10 MF
0.1 MF
LOSS OF SIGNAL
MODULE DETECT
SCL
SDA
4.7 k to 10k7
Figure 2. Typical Application Configuration
100 7
3.3 V
4.7 k to 10k7
GND,T
Tx DIS
Tx FAULT
www.DataVSChC,eT et4U.com
6.8 k7
4.7 k to 10k7
1 MH
0.1 MF
TD+ 0.01 MF
100 7
TD–
0.01 MF
VCC,T
LASER DRIVER
1 MH
10 MF
0.1 MF
VCC,R
4.7 k to
10 k7
RD+
VCC,R
VCC,R
50 7
0.01 MF
50 7
4.7 k to 10k7
RD–
0.01 MF
Rx LOS
GND,R
POST AMPLIFIER
MOD_DEF0 MOD_DEF1 MOD_DEF2
VCCT
0.1 MF
1 MH
VCCR
0.1 MF
10 MF
1 MH
0.1 MF
10 MF
3.3 V
SFP MODULE
HOST BOARD
NOTE: INDUCTORS MUST HAVE LESS THAN 17 SERIES RESISTANCE TO LIMIT VOLTAGE DROP TO THE SFP MODULE.
Figure 3. Recommended Power Supply Filter
6
5 Page 
Table 10. Transceiver Digital Diagnostic Monitor (Real Time Sense) Characteristics (TC = -40°C to 85°C, VccwT,wVcwcR.D=at3a.S3hVe±et140U%.c)om
Parameter
Transceiver Internal
Temperature Accuracy
Transceiver Internal Supply
Voltage Accuracy
Transmitter Laser DC Bias
Current Accuracy
Transmitted Average Optical
Output Power Accuracy
Received Average Optical
Input Power Accuracy
Symbol
TINT
VINT
IINT
PT
PR
Min
+/- 3.0
+/- 0.1
+/- 10
+/- 3.0
+/- 3.0
Units
°C
V
%
dB
dB
Notes
Temperature is measured internal to the transceiver. Valid from = -40°C to
85 °C case temperature.
Supply voltage is measured internal to the transceiver and can, with less
accuracy, be correlated to voltage at the SFP Vcc pin. Valid over 3.3 V ± 10%.
IINT is better than +/-10% of the nominal value.
Coupled into 50/125um multi-mode fiber. Valid from 100 uW to 500 uW, avg.
Coupled from 50/125um multi-mode fiber. Valid from 31 uW to 500 uW, avg.
Description of the Digital Diagnostic Data
Transceiver Internal Temperature
Temperature is measured on the AFBR-57J5APZ using
sensing circuitry mounted on the internal PCB. The
measured temperature will generally be cooler than laser
junction and warmer than SFP case and can be indirect-
ly correlated to SFP case or laser junction temperature
using thermal resistance and capacitance modeling. This
measurement can be used to observe drifts in thermal
operating point or to detect extreme temperature fluctu-
ations such as a failure in the system thermal control. For
more information on correlating internal temperature to
case or laser junction contact Avago Technologies.
Transceiver Internal Supply Voltage
Supply voltage is measured on the AFBR-57J5APZ using
sensing circuitry mounted on the internal PCB. Transmit
supply voltage (VccT) is monitored for this readback. The
resultant value can be indirectly correlated to SFP VccT
or VccR pin supply voltages using resistance modeling,
but not with the required accuracy of SFF-8472. Supply
voltage as measured will be generally lower than SFP Vcc
pins due to use of internal transient suppression circuitry.
As such, measured values can be used to observe drifts in
supply voltage operating point, be empirically correlated
to SFP pins in a given host application or used to detect
supply voltage fluctuations due to failure or fault in the
system power supply environment. For more information
on correlating internal supply voltage to SFP pins contact
Avago Technologies.
Transmitter Laser DC Bias Current
Laser bias current is measured using sensing circuitry
located on the transmitter laser driver IC. Normal varia-
tions in laser bias current are expected to accommo-
date the impact of changing transceiver temperature
and supply voltage operating points. The AFBR-57J5APZ
uses a closed loop laser bias feedback circuit to maintain
constant optical power. This circuit compensates for
normal VCSEL parametric variations in quantum efficien-
cy, forward voltage and lasing threshold due to changing
transceiver operating points. Consistent increases in laser
bias current observed at equilibrium temperature and
supply voltage could be an indication of laser degrada-
tion. For more information on using laser bias current for
predicting laser lifetime, contact Avago Technologies.
Transmitted Average Optical Output Power
Transmitted average optical power is measured using
sensing circuitry located on the transmitter laser driver
IC and laser optical subassembly. Variations in average
optical power are not expected under normal operation
because the AFBR-57J5APZ uses a closed loop laser bias
feedback circuit to maintain constant optical power.
This circuit compensates for normal VCSEL parametric
variations due to changing transceiver operating points.
Only under extreme laser bias conditions will significant
drifting in transmitted average optical power be observ-
able. Therefore it is recommended Tx average optical
power be used for fault isolation, rather than predictive
failure purposes.
Received Average Optical Input Power
Received average optical power is measured using
detecting circuitry located on the receiver preamp and
quantizer ICs. Accuracy is +/- 3.0 dB, but typical accuracy
is +/- 2.0 dB. This measurement can be used to observe
magnitude and drifts in incoming optical signal level for
detecting cable plant or remote transmitter problems.
11
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| Páginas | Total 18 Páginas | |
| PDF Descargar | [ Datasheet AFBR-57J5APZ.PDF ] | |
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