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AFBR-57R6APZ

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P19
10
Table 7. Transmitter Optical Characteristics
(T
C
= -10°C to 85°C, VccT, VccR = 3.3V ±10%)
Parameter Symbol Minimum Typical Maximum Unit Notes
Modulated Optical Output Power (OMA) Tx,OMA 247 µW Note 1
(Peak-to-Peak) 4.25 Gb/s
Modulated Optical Output Power (OMA) Tx,OMA 196 µW Note 2
(Peak-to-Peak) 2.125 Gb/s
Modulated Optical Output Power (OMA) Tx,OMA 156 µW Note 3
(Peak-to-Peak) 1.0625 Gb/s
Optical Extinction Ratio ER 9 dB Note 4
Average Optical Output Power Pout -9.0 dBm Note 5, 6
Center Wavelength l
C
830 860 nm
Spectral Width – rms s,rms 0.85 nm
Optical Rise/Fall Time (4.25 Gb/s) tr, tf 90 ps 20% - 80%
RIN
12
(OMA) RIN -118 dB/Hz
Transmitter Contributed Total Jitter (4.25 Gb/s) TJ 0.25 UI Note 7
60 ps
Transmitter Contributed Total Jitter (2.125 Gb/s) TJ 0.25 UI Note 7
120 ps
Transmitter Contributed Total Jitter (1.0625 Gb/s) TJ 0.27 UI Note 7
252 ps
Transmitter Contributed Total Jitter (1.25 Gb/s) TJ 0.284 UI
227 ps
Pout TX_DISABLE Asserted P
OFF
-35
dBm
Notes:
1. An OMA of 247 µW is approximately equal to an average power of –8 dBm, avg assuming an Extinction Ratio of 9 dB.
2. An OMA of 196 µW is approximately equal to an average power of –9 dBm, avg assuming an Extinction Ratio of 9 dB.
3. An OMA of 156 µW is approximately equal to an average power of –10 dBm, avg assuming an Extinction Ratio of 9 dB.
4. Extinction ratio of 9 dB valid when RATE_SELECT signal is driven low.
5. Max Pout is the lesser of Class 1 safety limits (CDRH and EN 60825) or receiver power, max.
6. Into 50/125 µm (0.2 NA) multi-mode optical ber.
7. Contributed DJ is measured on an oscilloscope in average mode with 50% threshold and K28.5 pattern. Contributed TJ is the sum of contributed
RJ and contributed DJ. 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. Per FC-PI (Table 13 - MM jitter output, note 1), the actual contributed RJ is allowed to increase above its limit if the actual
contributed DJ decreases below its limits, as long as the component output DJ and TJ remain within their specied FC-PI maximum limits with
the worst case specied component jitter input.
11
Table 8. Receiver Optical Characteristics
(T
C
= -10°C to 85°C, VccT, VccR = 3.3 V ±10%)
Parameter Symbol Min. Typ. Max. Unit Notes
Input Optical Power [Overdrive] P
IN
0 dBm, avg
Input Optical Modulation Amplitude OMA 61 µW, OMA Notes 1, 2
(Peak-to-Peak) 4.25 Gb/s [Sensitivity]
Input Optical Modulation Amplitude OMA 49 µW, OMA Notes 1, 3
(Peak-to-Peak) 2.125 Gb/s [Sensitivity]
Input Optical Modulation Amplitude OMA 31 µW, OMA Notes 1, 4
(Peak-to-Peak) 1.0625 Gb/s [Sensitivity]
Receiver Sensitivity (Optical Input Power) PRMIN -17 dBm
Stressed Receiver Sensitivity 138 µW, OMA 50/125 µm ber, Note 5
(OMA) 4.25 Gb/s
148 µW, OMA 62.5/125 µm ber, Note 5
Stressed Receiver Sensitivity 96 µW, OMA 50/125 µm ber, Note 6
(OMA) 2.125 Gb/s
109 µW, OMA 62.5/125 µm ber, Note 6
Stressed Receiver Sensitivity 55 µW, OMA 50/125 µm ber, Note 7
(OMA) 1.0625 Gb/s
67 µW, OMA 62.5/125 µm ber, Note 7
Stressed Receiver Sensitivity 1.25 Gb/s -13.5 dBm 50/125 µm ber
-12.5 dBm 62.5/125 µm ber
Return Loss 12 dB
Loss of Signal – Assert P
A
27.5 µW, OMA
-30 -17.5 dBm, avg Note 8
Loss of Signal - De-Assert P
D
31 µW, OMA
-17.0 dBm, avg Note 8
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. An OMA of 61 µW is approximately equal to an average power of –14 dBm, avg with an Extinction Ratio of 9 dB.
3. An OMA of 49 µW is approximately equal to an average power of –15 dBm, avg with an Extinction Ratio of 9 dB.
4. An OMA of 31 µW is approximately equal to an average power of –17 dBm, avg with an Extinction Ratio of 9 dB.
5. 4.25 Gb/s stressed receiver vertical eye closure penalty (ISI) min. is 1.67 dB for 50 µm ber and 2.14 dB for 62.5 µm ber. Stressed receiver DCD
component min. (at TX) is 20 ps.
6. 2.125 Gb/s stressed receiver vertical eye closure penalty (ISI) min. is 1.26 dB for 50 µm ber and 2.03 dB for 62.5 µm ber. Stressed receiver DCD
component min. (at TX) is 40 ps.
7. 1.0625 Gb/s stressed receiver vertical eye closure penalty (ISI) min. is 0.96 dB for 50 µm ber and 2.18 dB for 62.5 µm ber. Stressed receiver
DCD component min. (at TX) is 80 ps.
8. These average power values are specied with an Extinction Ratio of 9 dB. The loss of signal circuitry responds to valid 8B/10B encoded peak
to peak input optical power, not average power.
12
Table 9. Transceiver SOFT DIAGNOSTIC Timing Characteristics
(T
C
= -10°C to 85°C, VccT, VccR = 3.3 V ±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 ms Note 8
Hardware RATE_SELECT Deassert Time t_rate_low 10 ms 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 Deassert Time t_loss_o_soft 100 ms Note 13
Analog parameter data ready t_data 1000 ms Note 14
Serial bus hardware ready t_serial 300 ms Note 15
Write Cycle Time t_write 10 ms Note 16
Serial ID Clock Rate f_serial_clock 400 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. From power on to data ready bit asserted (A2h, byte 110, bit 0). Data ready indicates analog monitoring circuitry is functional.
15. Time from power on until module is ready for data transmission over the serial bus (reads or writes over A0h and A2h).
16. Time from stop bit to completion of a 1-8 byte write command.
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AFBR-57R6APZ

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