Patent ID: 6710728
Filing Date: 2004-03-23
Classification: H03M

Abstract:
An analog front-end of a Delta-Sigma analog-to-digital converter (ADC) for a semiconductor chip, the converter comprising: an input resistor [1], a feedback resistor [2], an integrator capacitor, a flip-flop [4] a plurality of buffers including a first buffer [5], [7] connected to the D-input of the flip-flop [4] and/or a second buffer [6], [8] connected to the output of the flip-flop on a feedback path, and a power supply different from a power supply of the semiconductor chip so that a decoupling between the semiconductor chip and the analog front-end is achieved and wherein the buffers [5] and/or [6] are internal to said semiconductor chip and are connected separately from the remainder of the semiconductor chip.