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HFBR-779BZ Datasheet(PDF) 9 Page - AVAGO TECHNOLOGIES LIMITED |
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HFBR-779BZ Datasheet(HTML) 9 Page - AVAGO TECHNOLOGIES LIMITED |
9 / 22 page 9 Receiver Optical Characteristics Parameter Symbol Min. Typ. Max. Unit Reference Input Optical Power Sensitivity PIN MIN –18.5 -16 dBm avg. 1 Input Optical Power Saturation PIN MAX –2 –1 dBm avg. 2 Operating Center Wavelength lC 830 860 nm Stressed Receiver Sensitivity –15.5 -11.3 dBm 3 Stressed Receiver Eye Opening 120 190 ps 4 Return Loss 12 19 dB 5 Signal Detect Asserted De-asserted Hysteresis PA PD PA-PD -31 0.5 -19 -21 2 -17 dBm avg. dBm avg. dB 6 Notes: 1. Sensitivity is defined as the average input power with the worst case, minimum, Extinction Ratio necessary to produce a BER of 10-12 at the center of the Baud interval using a 2.5 GBd Pseudo Random Bit Sequence of length 223 – 1 (PRBS), or equivalent, test pattern. For this parameter, input power is equivalent to that provided by an ideal source, i.e., a source with RIN and switching attributes that do not degrade the sensitivity measurement. All channels not under test are operating receiving data with an average input power up to 6 dB above PIN MIN. 2. Saturation is defined as the average input power that produces at the center of the output swing a receiver output eye width less than 120 ps where BER < 10-12 using a 2.5 GBd Pseudo Random Bit Sequence of length 223 –1 (PRBS), or equivalent, test pattern. 3. Stressed receiver sensitivity is defined as the average input power necessary to produce a BER < 10-12 at the center of the Baud interval using a 2.5 GBd Pseudo Random Bit Sequence of length 223 – 1 (PRBS), or equivalent, test pattern. For this parameter, input power is conditioned with 2.5 dB Inter-Symbol Interference, ISI, (min), 33 ps Duty Cycle Dependent Deterministic Jitter, DCD DJ (min) and 6 dB ER (ER Penalty = 2.23 dB). All channels not under test are operating receiving data with an average input power up to 6 dB above PIN MIN. 4. Stressed receiver eye opening is defined as the receiver output eye width where BER < 10-12 at the center of the output swing using a 2.5 GBd Pseudo Random Bit Sequence of length 223 – 1 (PRBS), or equivalent, test pattern. For this parameter, input power is an average input optical power of –10.7 dBm and conditioned with 2.5 dB ISI (min), 33 ps DCD DJ (min), 6 dB ER (ER Penalty = 2.23 dB). All channels not under test are operating receiving data with an average input power up to 6 dB above PIN MIN. 5. Return loss is defined as the ratio, in dB, of the received optical power to the optical power reflected back down the fiber. 6. Signal Detect assertion requires all optical inputs to exhibit a minimum 6 dB Extinction Ratio at PA = –17 dBm. All channels not under test are operating with PRBS 23 serial encoded patterns, asynchronous with the channel under test, and an average input power up to 6 dB higher than PIN MIN. |
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