Receiver equalizer circuitry having wide data rate and input common mode voltage ranges
First Claim
1. Equalizer circuitry on an integrated circuit (“
- IC”
) comprising;
a plurality of NMOS equalizer stages connected in series;
a PMOS equalizer stage connected in parallel with the NMOS equalizer stage that is first in the series; and
control circuitry for determining whether the PMOS equalizer stage or the NMOS equalizer stage that is first in the series will be used.
1 Assignment
0 Petitions
Accused Products
Abstract
Equalizer circuitry on an integrated circuit (“IC”) includes a plurality of NMOS equalizer stages connected in series. Each NMOS stage may include folded active inductor circuitry. Each NMOS stage may also include various circuit elements having controllably variable circuit parameters so that the equalizer can be controllably adapted to perform for any of a wide range of high-speed serial data signal bit rates and other variations of communication protocols and/or communication conditions. For example, each NMOS stage may be programmable to control at least one of bandwidth and power consumption of the equalizer circuitry. The equalizer may also have a first PMOS stage that can be used instead of the first NMOS stage in cases in which the voltage of the incoming signal to be equalized is too low for an initial NMOS stage.
10 Citations
24 Claims
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1. Equalizer circuitry on an integrated circuit (“
- IC”
) comprising;a plurality of NMOS equalizer stages connected in series; a PMOS equalizer stage connected in parallel with the NMOS equalizer stage that is first in the series; and control circuitry for determining whether the PMOS equalizer stage or the NMOS equalizer stage that is first in the series will be used. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
- IC”
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14. Equalizer circuitry on an integrated circuit (“
- IC”
) comprising;a plurality of NMOS equalizer stages connected in series, wherein each of the NMOS equalizer stages is programmable to control at least one of bandwidth and power consumption of the equalizer circuitry, and wherein each of the equalizer stages comprises folded active inductor circuitry. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23)
- IC”
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24. Equalizer circuitry on an integrated circuit (“
- IC”
) comprising;a plurality of differential NMOS equalizer stages connected in series, each of the NMOS equalizer stages being programmable to control one of bandwidth and power consumption of the equalizer circuitry; a differential PMOS equalizer stage connected in parallel with the NMOS equalizer stage that is first in the series; and control circuitry for determining whether the PMOS equalizer stage or the NMOS equalizer stage that is first in the series will be used.
- IC”
Specification