ADN2870(RevA) Просмотр технического описания (PDF) - Analog Devices

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ADN2870
(Rev.:RevA)

3.3 V Dual-Loop, 50 Mbps to 3.3 Gbps Laser Diode Driver

Analog Devices 

ADN2870

OPTICAL WAVEFORMS

VCC = 3.3 V and TA = 25°C, unless otherwise noted. Note that in Figure 18 through Figure 22, there is no change to the PAVCAP and

ERCAP values using either of the lasers or at any of the data rates tested.

MULTIRATE PERFORMANCE USING LOW COST

FABRY PEROT TOSA NEC NX7315UA

DUAL-LOOP PERFORMANCE OVER TEMPERATURE

USING DFB TOSA SUMITOMO SLT2486

(ACQ LIMIT TEST) WAVEFORMS 1000

(ACQ LIMIT TEST) WAVEFORMS 1001

Figure 18. Optical Eye 2.488 Gbps, 65 ps/DIV, PRBS 231-1,

PAV = −4.5 dBm, ER = 9 dB, Mask Margin 25%

(ACQ LIMIT TEST) WAVEFORMS 1000

Figure 21. Optical Eye 2.488 Gbps, 65 ps/DIV, PRBS 231-1,

PAV = 0 dBm, ER = 9 dB, Mask Margin 22%, TA = 25°C

(ACQ LIMIT TEST) WAVEFORMS 1001

Figure 19. Optical Eye 622 Mbps, 264 ps/DIV, PRBS 231-1,

PAV = −4.5 dBm, ER = 9 dB, Mask Margin 50%

(ACQ LIMIT TEST) WAVEFORMS 1000

Figure 22. Optical Eye 2.488 Gbps, 65 ps/DIV, PRBS 231-1,

PAV = −0.2 dBm, ER = 8.96 dB, Mask Margin 21%, TA = 85°C

Figure 20. Optical Eye 155 Mbps,1.078 ns/DIV, PRBS 231-1,

PAV = −4.5 dBm, ER = 9 dB, Mask Margin 50%

Rev. A | Page 10 of 20

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