AFCT-57J7ATPZ Avago Technologies US Inc., AFCT-57J7ATPZ Datasheet - Page 4

• Manufacturer Part Number: AFCT-57J7ATPZ
• Description: TXRX OPT SFP OBSAI/CPRI DMI
• Manufacturer: Avago Technologies US Inc.

Specifications of AFCT-57J7ATPZ

• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Receiver Section
The receiver section includes the Receiver Optical Sub-
Assembly (ROSA) and the amplifi cation/quantization
circuitry. The ROSA, containing a PIN photo diode and
custom transimped ance amplifi er, is located at the optical
interface and mates with the LC optical connector. The
ROSA output is fed to a custom IC that provides post-am-
plifi cation and quantization.
Receiver Loss of Signal (Rx_LOS)
The post-amplifi cation IC also includes transition detection
circuitry which monitors the ac level of incoming optical
signals and provides a TTL/CMOS compatible status signal
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
factory set so that a high output indicates a defi nite optical
fault has occurred. Rx_LOS can also be monitored via the
two-wire serial interface (address A2h, byte 110, bit 1).
Functional Data I/O
The AFCT-57J7ATPZ interfaces with the host circuit board
through twenty I/O pins (SFP electrical connector) iden-
tifi ed by function in Table 2. The board layout for this
interface is depicted in Figure 6.
The AFCT-57J7ATPZ high speed transmit and receive in-
terfaces require SFP MSA compliant signal lines on the
host board. To simplify board requirements, biasing
resistors 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,
Rx_LOS require TTL lines on the host board (per SFF-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-57J7ATPZ to supporting physical layer ICs.
Timing for MSA compliant control signals implemented in
the transceiver are listed in Figure 4.
Application Support
An Evaluation Kit and Reference Designs are available to
assist in evaluation of the AFCT-57J7ATPZ. Please contact
your local Field Sales representative for availability and
ordering details.
4
Caution
There are no user serviceable parts nor maintenance require-
ments for the AFCT-57J7ATPZ. All mechanical adjustments
are made at the factory prior to shipment. Tampering with,
modifying, misusing or improperly handling the AFCT-
57J7ATPZ will void the product warranty. It may also result
in improper operation and possibly overstress the laser
source. Performance degradation or device failure may
result. Connection of the AFCT-57J7ATPZ to a light source
not compliant with ANSI FC-PI or IEEE 802.3 specifi cations,
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 manufactur ing 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. 21 CFR (Subchapter J) and TUV.
Ordering Information
Please contact your local fi eld 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
Avago Technologies Semiconductor Products Customer
Response Center at 1-800-235-0312. For information
related to SFF Committee documentation visit www.sff com-
mittee.org.
Regulatory Compliance
The AFCT-57J7ATPZ complies with all applicable laws
and regulations as detailed in Table 1. Certifi cation level
is dependent on the overall confi guration of the host
equipment. The transceiver performance is off ered as a
fi gure of merit to assist the designer.
Electrostatic Discharge (ESD)
The AFCT-57J7ATPZ is compatible with ESD levels found
in typical manufacturing and operating environments
as described in Table 1. In the normal handling and
operation of optical transceivers, ESD is of concern in two
circumstances.
The fi rst case is during handling of the transceiver prior
to insertion into an SFP compliant cage. To protect the
device, it’s important to use normal ESD handling precau-
tions. These include using of grounded wrist straps, work-
benches and fl oor 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.