參數(shù)資料
型號(hào)： AFCT-57M5ATPZ
元件分類(lèi)： 光發(fā)射
英文描述： FIBER OPTIC TRANSMITTER, 1280-1345nm, 1593Mbps, LC CONNECTOR
封裝： PLASTIC
文件頁(yè)數(shù)： 15/20頁(yè)
文件大?。?/td> 402K
代理商： AFCT-57M5ATPZ
4
ReceiverSection
The receiver section includes the Receiver Optical Sub-
Assembly (ROSA) and the amplification/quantization
circuitry. The ROSA, containing a PIN photodiode and
customtransimpedanceamplifier,islocatedattheoptical
interface and mates with the LC optical connector. The
ROSA output is fed to a custom IC that provides post-
amplification and quantization.
ReceiverLossofSignal(Rx_LOS)
Thepost-amplificationICalsoincludestransitiondetection
circuitry which monitors the ac level of incoming optical
signalsandprovidesaTTL/CMOScompatiblestatussignal
to the host (pin 8). An adequate optical input results in a
low Rx_LOS output while a high Rx_LOS output indicates
an unusable optical input. The Rx_LOS thresholds are fac-
tory set so that a high output indicates a definite optical
fault has occurred. Rx_LOS can also be monitored via the
two-wire serial interface (address A2h, byte 0, bit ).
FunctionalDataI/O
The AFCT-57M5ATPZ interfaces with the host circuit
board through twenty I/O pins (SFP electrical connector)
identified by function in Table 2. The board layout for this
interface is depicted in Figure 6.
The AFCT-57M5ATPZ high speed transmit and receive
interfaces require SFP MSA compliant signal lines on the
host board. To simplify board requirements, biasing resis-
tors and ac coupling capacitors are incorporated into the
SFP transceiver module (per SFF-8074i) and hence are not
required on the host board. The Tx_Disable, Tx_Fault, and
Rx_LOSrequireTTLlinesonthehostboard(perSFF-8074i)
if used. If an application chooses not to take advantage
of the functionality of these pins, care must be taken to
ground Tx_Disable (for normal operation).
Figure 2 depicts the recommended interface circuit to
link the AFCT-57M5ATPZ to supporting physical layer ICs.
Timing for MSA compliant control signals implemented
in the transceiver are listed in Figure 4.
ApplicationSupport
An Evaluation Kit and Reference Designs are available to
assistinevaluationoftheAFCT-57M5ATPZ.Pleasecontact
your local Field Sales representative for availability and
ordering details.
Caution
There are no user serviceable parts nor maintenance
requirements for the AFCT-57M5ATPZ.
Allmechanical
adjustmentsaremadeatthefactorypriortoshipment.Tam-
pering with, modifying, misusing or improperly handling
the AFCT-57M5ATPZ will void the product warranty. It may
also result in improper operation and possibly overstress
thelasersource.Performancedegradationordevicefailure
may result. Connection of the AFCT-57M5ATPZ to a light
source not compliant with ANSI FC-PI or IEEE 802.3 speci-
fications, operating above maximum operating conditions
or in a manner inconsistent with it’s design and function
may result in exposure to hazardous light radiation and
may constitute an act of modifying or manufacturing a
laser product. Persons performing such an act are required
by law to re-certify and re-identify the laser product under
the provisions of U.S. 2 CFR (Subchapter J) and TUV.
OrderingInformation
Please contact your local field sales engineer or one of
Avago Technologies franchised distributors for ordering
information. For technical information, please visit Avago
Technologies’ WEB page at www.avagotech.com or contact
AvagoTechnologiesSemiconductorProductsCustomerRe-
sponseCenterat-800-235-032.Forinformationrelatedto
SFF Committee documentation visit www.sffcommittee.org.
RegulatoryCompliance
The AFCT-57M5ATPZ complies with all applicable laws
and regulations as detailed in Table . Certification level is
dependent on the overall configuration of the host equip-
ment. The transceiver performance is offered as a figure of
merit to assist the designer.
ElectrostaticDischarge(ESD)
The AFCT-57M5ATPZ is compatible with ESD levels found
in typical manufacturing and operating environments as
described in Table . In the normal handling and oper-
ation of optical transceivers, ESD is of concern in two
circumstances.
The first case is during handling of the transceiver prior to
insertion into an SFP compliant cage.To protect the device,
it’simportanttousenormalESDhandlingprecautions.These
include using of grounded wrist straps, work-benches and
floor wherever a transceiver is handled.
The second case to consider is static discharges to the
exterior of the host equipment chassis after installation.
If the optical interface is exposed to the exterior of host
equipment cabinet, the transceiver may be subject to
system level ESD requirements.
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