Sense amplifier with low common mode differential input signal
OwnerIn-Soo Park, Kyu-Hyoun Kiminventors
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Abstract
A sense amplifier includes a first amplifier with differential input devices and load inverters for the differential input devices with the load inverters being cross-coupled in a latching configuration. The sense amplifier also includes a second amplifier coupled to the first amplifier, and the second amplifier includes latching inverters cross-coupled in a latching configuration. The double inverter latching action in the first and second amplifiers enhances response speed even with a low common mode reference voltage.
Claims20
A sense amplifier comprising:
- a first amplifier including differential input devices and load inverters for the differential input devices, wherein the load inverters are cross-coupled in a latching configuration;
- and
- a second amplifier coupled to the first amplifier, the second amplifier including latching inverters cross-coupled in a latching configuration.
A method for amplifying differential input signals, comprising:
- amplifying the differential input signals with load inverters cross-coupled in a latching configuration to generate differential output signals;
- and
- amplifying the differential output signals with latching inverters cross-coupled in a latching configuration.
A sense amplifier comprising:
- means for amplifying differential input signals with load inverters cross-coupled in a latching configuration to generate differential output signals;
- and
- means for amplifying the differential output signals with latching inverters cross-coupled in a latching configuration.
Dependencies are inferred from the claim text.