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US 8,786,365 B2Granted
External programmable DFE strength
AssigneeNanya Technology Corporation
InventorYu Meng Chuang
Life of this patent
Estimating the term…
Abstract
A decision feedback equalizer is disclosed. The decision feedback equalizer comprises an amplifier circuit and a latch. The amplifier circuit is configured to receive an input signal, a decision feedback signal and a control signal, and is configured to adjust its driving capability according to the decision feedback signal and the control signal to provide an amplified signal of the input signal. The latch is configured to latch the amplified signal as an output signal.
Claims16
A decision feedback equalizer, comprising:
- a plurality of amplifying latch modules, configured to output a plurality of output signals according to an input signal, wherein the plurality of amplified latch modules comprise:
- an amplifier circuit, configured to provide an amplifying signal of the input signal;
- and
- a latch, configured to latch the amplifying signal as one of the plurality output signals;
- wherein the amplifier circuit is configured to adjust its driving capability according to an output signal of another latch and a control signal, and
- the amplifier circuit is a differential amplifier circuit, comprising:
- a transistor pair, configured to provide an amplifying signal of the input signal, and an amplifying signal of an inverse signal of the input signal,
- a current source connecting to the transistor pair, configured to be a current source of the amplifier circuit, and
- a feedback module connecting to the transistor pair and configured to increase driving capability of the amplifier circuit according to an output signal of another amplifying latch module.
6 more elements
A decision feedback equalizer, comprising:
- an amplifier circuit, configured to receive an input signal, a decision feedback signal and a control signal, and adjust its driving capability according to the decision feedback signal and control signal to provide an amplifying signal of the input signal;
- and
- a latch, configured to latch the amplifying signal as an output signal, wherein
- the amplifier circuit is a differential amplifier circuit comprising:
- a transistor pair, configured to provide an amplifying signal of the input signal, and an amplifying signal of an inverse signal of the input signal,
- a feedback load circuit connecting to the transistor pair, configured to be a load of the amplifier circuit,
- a current source connecting to the transistor pair, configured to be a current source of the amplifier circuit, and
- a feedback module connecting to the transistor pair, configured to increase the driving capability of the amplifier circuit according to an output signal of another latch module.
5 more elements
Dependencies are inferred from the claim text.