Active inductor based high-bandwidth 2-state 4-way data serialization apparatus and method

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United States of America Patent

PATENT NO 12111786
APP PUB NO 20220147482A1
SERIAL NO

17338512

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Abstract

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An apparatus enables a high-bandwidth 4-way data serializing (4:1 serializer) digital-to-analog converter. The apparatus uses active inductor-based bandwidth extension technique for two-stage driver enabling design of quarter-rate 4-way data serializing transmitter. The 4:1 serializer output bandwidth is extended by gate-resistor-peaked n-type transistor load working as an active inductor. A current steering switch with current source is used as the final driver. The 4:1 serializer includes a pulse width tuning technique with tunable ground voltage on the ground terminal of a pulse generator to tune an effective threshold voltage of the pulse generator. A Bessel-like LC filter is coupled to an output of the 4:1 serializer. The filter includes shunt peaking paths that provide zeros, which natively cancel large parasitic capacitance at a shunt peaking node. As such, active and passive devices including driver circuitry, ESD diodes, and any other sensing circuitry are flexibly added on any LC filter nodes.

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Patent Owner(s)

Patent OwnerAddress
INTEL CORPORATION2200 MISSION COLLEGE BOULEVARD SANTA CLARA CA 95054

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Balankutty, Ajay Hillsboro, US 9 48
Kim, Bong Chan Hillsboro, US 34 232
Kim, Jihwan Portland, US 248 5241
Kim, Stephen Beaverton, US 22 854
Kundu, Sandipan Hillsboro, US 8 78
O'Mahony, Frank Portland, US 24 161
Yu, Kai Portland, US 116 1276

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