ADN2841(2002) データシートの表示（PDF） - Analog Devices

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ADN2841
(Rev.:2002)

Dual-Loop 50 Mbps–2.7 Gbps Laser Diode Driver

Analog Devices 

ADN2841

VCC

VCC VCC

EA MODULATOR

75⍀

10nF

VCC

100nH

48

1

VCC

GND4

VCC4

GND

LBWSET

ASET

ERSET

PSET

GND

IMPD

IMPDMON

IMPDMON2

IMPD2

ADN2841

33⍀

VCC

NOTES

1. V CCs SHOULD HAVE BYPASS CAPACITORS

AS CLOSE AS POSSIBLE TO THE ACTUAL

SUPPLY PINS ON THE ADN2841 AND THE

LASER DIODE USED.

2. THE OP293 HAS BEEN SELECTED BECAUSE

OF ITS GAIN-BANDWIDTH PRODUCT AND

SHOULD BE USED IN THIS APPLICATION.

36

GND2

IDTONE

VCC

GND2

IBMON

IMMON

GND3

VCC3

VCC

ALS

FAIL

DEGRADE

CLKSEL

GND

12

24 VCC

VCC

VCC

VCC

82

1

3

1/2 OP293

DAC

1k⍀

1/2 OP293 6

7

5

DAC

1k⍀

–VCC

Figure 8. Applications Circuit

Figure 9. Unfiltered 2.5 Gbps Optical Eye. Average

Power = –3 dBm, Extinction Ratio = 9.5 dB. Eye

Obtained Using a Mitsubishi FU-445-SDF.

Figure 10. Filtered 2.5 Gbps Optical Eye. Average

Power = –3 dBm, Extinction Ratio = 9 dB. Eye

Obtained Using a Mitsubishi FU-445-SDF.

–10–

REV. A

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