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Table of Contents
CHAPTER 1: INTRODUCTION................................................................................................................1
CHAPTER 2: SYSTEM OVERVIEW........................................................................................................4
2.1 PHOTO-DETECTOR................................................................................................................................4
2.2 PREAMPLIFIER....................................................................................................................................10
2.3 POST AMPLIFIER.................................................................................................................................12
2.4 CLOCK AND DATA RECOVERY............................................................................................................13
2.5 DEFINITION OF SPECIFICATIONS..........................................................................................................14
2.6 CONCLUSION......................................................................................................................................16
CHAPTER 3: TRANSIMPEDANCE AMPLIFIER................................................................................17
3.1 TRANSIMPEDANCE AMPLIFIER SYSTEM...............................................................................................17
3.2 INVERTER CONFIGURATIONS...............................................................................................................20
3.2.1 Current Load.............................................................................................................................21
3.2.2 Push-Pull...................................................................................................................................24
3.2.3 Cascode......................................................................................................................................28
3.3 CONCLUSION......................................................................................................................................33
CHAPTER 4: LIMITING AMPLIFIER...................................................................................................34
4.1 RESISTIVE LOAD DIFFERENTIAL AMPLIFIER.........................................................................................36
4.2 INDUCTIVE LOAD DIFFERENTIAL PAIR................................................................................................39
4.3 DIFFERENTIAL PAIR WITH ACTIVE INDUCTORS...................................................................................42
4.4 CONCLUSION......................................................................................................................................49
CHAPTER 5: OFFSET CORRECTION..................................................................................................50
5.1 LOW PASS FILTER AND AC COUPLING................................................................................................51
5.2 OFFSET FEEDBACK.............................................................................................................................53
5.3 CONCLUSION......................................................................................................................................57
CHAPTER 6: VERIFICATION, TESTING AND RESULTS................................................................58
6.1 TRANSIMPEDANCE AMPLIFIER............................................................................................................58
6.2 OPTOELECTRONIC AMPLIFIER SYSTEM...............................................................................................59
6.3 TEST CHIP..........................................................................................................................................60
6.4 EVALUATION BOARD..........................................................................................................................63
6.5 AMPLIFIER MEASUREMENTS...............................................................................................................65
6.6 1/F NOISE...........................................................................................................................................68
CHAPTER 7: CONCLUSIONS.................................................................................................................72
APPENDIX A: CADENCE SCHEMATICS.............................................................................................74
APPENDIX B: BONDING DIAGRAMS..................................................................................................94
REFERENCES...........................................................................................................................................97 |
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CCalvo.rar
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A 2.5 GHz Optoelectronic Amplifier in 0.18 μm CMOS
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