US 10,705,984 B1Granted

High-speed low VT drift receiver

AssigneeCadence Design Systems, Inc.

InventorsH Md Shuaeb Fazeel, Nikhil Sawarkar, Aaron Willey, Thomas Evan Wilson

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Abstract

Embodiments relate to systems, methods, and computer-readable media to enable design and creation of receiver circuitry. One embodiment is a receiver apparatus comprising a plurality of receiver arrangements, each receiver arrangement having a sampling circuit and a multi-stage differential amplifier connected to the sampling circuit. Each receiver arrangement is configurable via switches between an amplifying mode and an autozero mode. Control circuitry may select output data from a sampling circuit of one or more receiver arrangements that are not in autozero mode. In various embodiments, settings for individual receiver arrangements may be set based on decision feedback equalization (DFE).

Claims20

Dependent claims

A receiver apparatus for a memory device, the receiver apparatus comprising:

an input terminal;
one or more voltage reference terminals;
a first receiver arrangement comprising:
a first differential amplifier including a first input connected to the input terminal via a first switch, a second input connected to the one or more voltage reference terminals, a first output, and a second output;
and
a first sampling circuit including first sampling circuit inputs connected to the first output of the first differential amplifier and the second output of the first differential amplifier, and a first sampling circuit output;
a second receiver arrangement comprising:
a second differential amplifier including a first input connected to the input terminal via a second switch, a second input connected to the one or more voltage reference terminals, a first output, and a second output;
and
a second sampling circuit including second sampling circuit inputs connected to the first output of the second differential amplifier and the second output of the second differential amplifier, and a second sampling circuit output;
a multiplexer including a first multiplexer input connected to the first sampling circuit output, a second multiplexer input connected the second sampling circuit output, and a multiplexer output;
and
an output terminal connected to the multiplexer output.

10 more elements

A method of configuring a component arrangement in design for an integrated circuit, the method comprising:

defining an input terminal;
defining one or more voltage reference terminals;
configuring a first receiver arrangement comprising:
a first differential amplifier including a first input connected to the input terminal via a first switch, a second input connected to the one or more voltage reference terminals, a first output, and a second output;
and
a first sampling circuit including first sampling circuit inputs connected to the first output of the first differential amplifier and the second output of the first differential amplifier, and a first sampling circuit output;
configuring a second receiver arrangement comprising:
a second differential amplifier including a first input connected to the input terminal via a second switch, a second input connected to the one or more voltage reference terminals, a first output, and a second output;
and
a second sampling circuit including second sampling circuit inputs connected to the first output of the second differential amplifier and the second output of the second differential amplifier, and a second sampling circuit output;
configuring a multiplexer including a first multiplexer input connected to the first sampling circuit output, a second multiplexer input connected the second sampling circuit output, and a multiplexer output;
defining an output terminal connected to the multiplexer output;
and
initiating generation of a design for the integrated circuit using the component arrangement.

11 more elements

Dependencies are inferred from the claim text.