Datasheet

ADN2873
Rev. 0 | Page 12 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 23, Figure 24, and Figure 25 show multirate performance using the low cost Fabry Perot TOSA NEC NX7315UA;
Figure 26 and Figure 27 show performance over temperature using the DFB TOSA Sumitomo SLT2486.
(ACQ LIMIT TEST) W
A
V
EFORMS 1000
07493-007
Figure 23. Optical Eye 2.488 Gbps, 65 ps/DIV, PRBS 2
31 − 1
P
AV
= −4.5 dBm, ER = 9 dB, Mask Margin 25%
(ACQ LIMIT TEST) W
A
V
EFORMS 1000
07493-008
Figure 24. Optical Eye 622 Mbps, 264 ps/DIV, PRBS 2
31 − 1
P
AV
= −4.5 dBm, ER = 9 dB, Mask Margin 50%
(ACQ LIMIT TEST) W
A
V
EFORMS 1000
07493-009
Figure 25. Optical Eye 155 Mbps,1.078 ns/DIV, PRBS 2
31 − 1
P
AV
= −4.5 dBm, ER = 9 dB, Mask Margin 50%
(ACQ LIMIT TEST) W
A
V
EFORMS 1001
07493-010
Figure 26. Optical Eye 2.488 Gbps, 65 ps/DIV, PRBS 2
31 − 1
P
AV
= 0 dBm, ER = 9 dB, Mask Margin 22%, T
A
= 25°C
(ACQ LIMIT TEST) W
A
V
EFORMS 1001
07493-011
Figure 27. Optical Eye 2.488 Gbps, 65 ps/DIV, PRBS 2
31 − 1
P
AV
= −0.2 dBm, ER = 8.96 dB, Mask Margin 21%, T
A
= 85°C