Datasheet

ADN2872
Rev. 0 | Page 9 of 20
OPTICAL WAVEFORMS
V
CC
= 3.3 V and T
A
= 25°C, unless otherwise noted. Note that there was no change to PAVCAP and ERCAP values when different data
rates were tested. Figure 18, Figure 19, and Figure 20 show multirate performance using the low cost Fabry Perot TOSA NEC NX7315UA;
Figure 21 and Figure 22 show dual-loop performance over temperature using the DFB TOSA Sumitomo SLT2486.
(ACQ LIMIT TEST) WAVEFORMS 100
0
08013-016
Figure 18. Optical Eye 2.488 Gbps, 65 ps/DIV, PRBS 2
31
− 1,
PAV = −4.5 dBm, ER = 9 dB, Mask Margin 25%
(ACQ LIMIT TEST) WAVEFORMS 100
0
08013-017
Figure 19. Optical Eye 622 Mbps, 264 ps/DIV, PRBS 2
31
− 1,
PAV = −4.5 dBm, ER = 9 dB, Mask Margin 50%
(ACQ LIMIT TEST) WAVEFORMS 100
0
08013-020
Figure 20. Optical Eye 155 Mbps,1.078 ns/DIV, PRBS 2
31
− 1,
PAV = −4.5 dBm, ER = 9 dB, Mask Margin 50%
(ACQ LIMIT TEST) WAVEFORMS 1001
08013-047
Figure 21. Optical Eye 2.488 Gbps, 65 ps/DIV, PRBS 2
31
− 1,
PAV = 0 dBm, ER = 9 dB, Mask Margin 22%, T
A
= 25°C
(ACQ LIMIT TEST) WAVEFORMS 1001
08013-048
Figure 22. Optical Eye 2.488 Gbps, 65 ps/DIV, PRBS 2
31
− 1,
PAV = −0.2 dBm, ER = 8.96 dB, Mask Margin 21%, T
A
= 85°C