Patent ID: 8819101
Filing Date: 2014-08-26
Classification: H03M

Abstract:
1. An apparatus for performing multi-bit quantization, comprising: an input signal line; a first comparator having a first input coupled to the input signal line, a second input coupled to a first reference signal, and an output; a rectifier having an input coupled to the input signal line and also having an output; a second comparator having a first input coupled to the output of the rectifier, a second input coupled to a second reference signal, and an output; and a multiplexer having a signal-select input coupled to the output of the first comparator, a first input coupled to the output of the second comparator, a second input coupled to the output of the second comparator, and an output, wherein the first comparator and the second comparator are clocked so as to produce sequences of quantized samples at substantially the same times.