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AFCT-57J5APZ

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P19
10
Table 7. Receiver Optical Characteristics
(T
C
= -40°C to 85°C, VccT, VccR = 3.3V ± 10%)
Parameter Symbol Minimum Typical Maximum Unit Notes
Input Optical Power [Overdrive] P
IN
-3 dBm,
avg
Input Optical Modulation Amplitude
Peak-to-Peak (0.614 to 3.072 Gb/s)
[Sensitivity]
OMA 29 μW, oma 1x10
-12
BER , Note 1
41 μW, oma 1x10
-15
BER, Note 1
Return Loss 12 dB
Loss of Signal – Assert P
A
13.8 uW, oma
-30 -20.5 dBm,
avg
Note 2
Loss of Signal - De-Assert P
D
15 uW, oma
-20.0 dBm,
avg
Note 2
Loss of Signal Hysteresis P
D
- P
A
0.5 dB
Notes
1. Input Optical Modulation Amplitude (commonly known as sensitivity) requires a valid 8B/10B encoded input.
2. These average power values are speci ed with an Extinction Ratio of 9dB. The loss of signal circuitry responds to valid 8B/10B encoded peak to
peak input optical power, not average power.
Table 8. Transmitter and Receiver Electrical Characteristics
(T
C
= -40°C to 85°C, VccT, VccR = 3.3V ± 10%)
Parameter Symbol Minimum Typical Maximum Unit Notes
High Speed Data Input:
Transmitter Di erential Input Voltage
(TD +/-)
V
I
400 2400 mV Note 1
High Speed Data Output:
Receiver Di erential Output Voltage
(RD +/-)
Vo 500 1600 mV Note 2
Receiver Contributed Deterministic
Jitter
(0.614 to 3.072 Gb/s)
DJ 25 ps Note 3, 7
Receiver Contributed Total Jitter
(0.614 to 3.072 Gb/s)
TJ 65 ps Note 4, 6, 7
Receiver Electrical Output Rise & Fall
Times (20-80%)
Tr, tf 30 200 ps Note 5
Notes
1. Internally AC coupled and terminated (100 Ohm di erential).
2. Internally AC coupled but requires an external load termination (100 Ohm di erential).
3. Contributed DJ is measured on an oscilloscope in average mode with 50% threshold and K28.5 pattern
4. Contributed RJ is calculated for 1x10
-12
BER by multiplying the RMS jitter (measured on a single rise or fall edge) from the oscilloscope by 14.
5. 20%-80% electrical rise & fall times measured with a 500 MHz signal utilizing a 1010 data pattern.
6. In a network link, each component’s output jitter equals each component’s input jitter combined with each component’s contributed jitter.
Contributed DJ adds in a linear fashion and contributed RJ adds in a RMS fashion.
7. Measured at an input optical power of 48uW, OMA.
11
Table 9. Transceiver SOFT DIAGNOSTIC Timing Characteristics
(T
C
= -40°C to 85°C, VccT, VccR = 3.3V ± 10%)
Parameter Symbol Minimum Maximum Unit Notes
Hardware TX_DISABLE Assert Time t_o 10 μs Note 1
Hardware TX_DISABLE Negate Time t_on 1 ms Note 2
Time to initialize, including reset of TX_FAULT t_init 300 ms Note 3
Hardware TX_FAULT Assert Time t_fault 100 μs Note 4
Hardware TX_DISABLE to Reset t_reset 10 μs Note 5
Hardware RX_LOS DeAssert Time t_loss_on 100 μs Note 6
Hardware RX_LOS Assert Time t_loss_o 100 μs Note 7
Hardware RATE_SELECT Assert Time t_rate_high 10 μs Note 8
Hardware RATE_SELECT DeAssert Time t_rate_low 10 μs Note 8
Software TX_DISABLE Assert Time t_o _soft 100 ms Note 9
Software TX_DISABLE Negate Time t_on_soft 100 ms Note 10
Software Tx_FAULT Assert Time t_fault_soft 100 ms Note 11
Software Rx_LOS Assert Time t_loss_on_soft 100 ms Note 12
Software Rx_LOS De-Assert Time t_loss_o _soft 100 ms Note 13
Software RATE_SELECT Assert Time t_rate_soft_high 1 ms Note 14
Software RATE_SELECT DeAssert Time t_rate_soft_low 1 ms Note 14
Analog parameter data ready t_data 1000 ms Note 15
Serial bus hardware ready t_serial 300 ms Note 16
Write Cycle Time t_write 10 ms Note 17
Serial ID Clock Rate f_serial_clock 100 kHz
Notes
1. Time from rising edge of TX_DISABLE to when the optical output falls below 10% of nominal.
2. Time from falling edge of TX_DISABLE to when the modulated optical output rises above 90% of nominal.
3. Time from power on or falling edge of Tx_Disable to when the modulated optical output rises above 90% of nominal.
4. From power on or negation of TX_FAULT using TX_DISABLE.
5. Time TX_DISABLE must be held high to reset the laser fault shutdown circuitry.
6. Time from loss of optical signal to Rx_LOS Assertion.
7. Time from valid optical signal to Rx_LOS De-Assertion.
8. Time from rising or falling edge of Rate_Select input until transceiver is in conformance with appropriate speci cation.
9. Time from two-wire interface assertion of TX_DISABLE (A2h, byte 110, bit 6) to when the optical output falls below 10% of nominal. Measured
from falling clock edge after stop bit of write transaction.
10. Time from two-wire interface de-assertion of TX_DISABLE (A2h, byte 110, bit 6) to when the modulated optical output rises above 90% of
nominal.
11. Time from fault to two-wire interface TX_FAULT (A2h, byte 110, bit 2) asserted.
12. Time for two-wire interface assertion of Rx_LOS (A2h, byte 110, bit 1) from loss of optical signal.
13. Time for two-wire interface de-assertion of Rx_LOS (A2h, byte 110, bit 1) from presence of valid optical signal.
14. Time from two-wire interface selection of Rate_Select input (A2h, byte 110, bit 3) write STOP condition until completion of the receiver
bandwidth switch
15. From power on to data ready bit asserted (A2h, byte 110, bit 0). Data ready indicates analog monitoring circuitry is functional.
16. Time from power on until module is ready for data transmission over the serial bus (reads or writes over A0h and A2h).
17. Time from stop bit to completion of a 1-8 byte write command.
12
Table 10. Transceiver Digital Diagnostic Monitor (Real Time Sense) Characteristics
(T
C
= -40°C to 85°C, VccT, VccR = 3.3V ± 10%)
Parameter Symbol Min Units Notes
Transceiver Internal
Temperature Accuracy
T
INT
± 3.0
°C Temperature is measured internal to the transceiver.
Valid from = -40°C to 85 °C case temperature.
Transceiver Internal
Supply Voltage Accuracy
V
INT
± 0.1
V 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%.
Transmitter Laser DC
Bias Current Accuracy
I
INT
± 10
%
IINT is better than ± 10% of the nominal value.
Transmitted Average Optical
Output Power Accuracy
P
T
± 3.0
dB Coupled into single-mode  ber. Valid from 100 uW to 500 uW, avg.
Received Average Optical
Input Power Accuracy
P
R
± 3.0
dB Coupled from single-mode  ber. Valid from 15 uW to 500 uW, avg.
Temperature is measured on the AFCT-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  uctu-
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.
Supply voltage is measured on the AFCT-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  uctuations 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.
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 AFCT-57J5APZ
uses a closed loop laser bias feedback circuit to maintain
constant optical power. This circuit compensates for
normal FABRY PEROT parametric variations in quantum
e ciency, 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 degradation. For more information on using laser
bias current for predicting laser lifetime, contact Avago
Technologies.
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 AFCT-57J5APZ uses a closed loop laser bias
feedback circuit to maintain constant optical power. This
circuit compensates for normal FABRY PEROT parametric
variations due to changing transceiver operating points.
Only under extreme laser bias conditions will signi cant
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 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.
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P19

AFCT-57J5APZ

Mfr. #:
Buy AFCT-57J5APZ
Manufacturer:
Broadcom / Avago
Description:
Fiber Optic Transmitters, Receivers, Transceivers SM BTS FP SFP Ind-Temp RoHS
Lifecycle:
New from this manufacturer.
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