Area Array Cobra Probe Card With 5 GHz. Bandwidth Raphael ...

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Extending Bandwidth

• Bandwidth Of Current Design Limited

By Cobra Head.

– Rise Time Of High Speed Lines

Determined By L/R Time Of Head.

• Paths to Higher Frequencies:

– Redesign Head For 50 Ohm Path From

Coax To Chip.

– Reduce Distance Between Coax And Chip.

6/12/02 IBM RESEARCH Page [20]

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Extending Bandwidth • Bandwidth Of Current Design Limited By Cobra Head. – Rise Time Of High Speed Lines Determined By L/R Time Of Head. • Paths to Higher Frequencies: – Redesign Head For 50 Ohm Path From Coax To Chip. – Reduce Distance Between Coax And Chip. 6/12/02 IBM RESEARCH Page [20]

TFI Contactor Reduces L/R Time Substrate Space XFM TFI Contactor Detail 100 µm Lp = 20 pH, Lp/R = 0.4 ps 6/12/02 IBM RESEARCH Page [21]

Page 1 and 2: Area Array Cobra Probe Card With 5
Page 3 and 4: Motivation • Wafer Level, Develop
Page 5 and 6: High Performance Cobra Probe Card 5
Page 7 and 8: Space Transformer 100 mm Micro-Coax
Page 9 and 10: Probe Card Features • Space Trans
Page 11 and 12: TDT For Medium And Low Speed Lines
Page 13 and 14: TDT For High Speed Lines 6/12/02 IB
Page 15 and 16: SerDes Output Experiment HP54120B C
Page 17 and 18: SerDes BERT Experiment 6/12/02 IBM
Page 19: 10 Gb/s BERT Results At Wafer Level

Area Array Cobra Probe Card With 5 GHz. Bandwidth Raphael ...

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