Abstract:
The present invention provides a supply identifier, which takes precise decision on the range of the external supply to manage a proper internal supply to the core of the IC by controlling a regulator or a switch connected to external supply. This supply identifier, defers the decision till everything that influence the decision settles after power-up, then makes a decision only once depending on the external supply range and switches itself off keeping the decision stored, to avoid noise induced wrong behavior and to reduce power consumption.
Abstract:
This invention relates to an improved binary-weighted, switched-capacitor, charge-redistribution successive approximation Analog-to-Digital Converter (ADC) characterized in that it includes an adjusting mechanism for adding a charge corresponding to one-half of the Least Significant Bit (LSB) of said ADC to the charge stored in the switched capacitor array after the sampling phase of said ADC so as to provide a quantization error that is evenly distributed between +0.5 LSB and -0.5 LSB, without the need for any additional processing clock cycles.