Delta-sigma analog / digital converter National Semiconductor

National's Analog to Digital converters employ a new breed of sigma-delta architecture: continuous time sigma-delta (CT∑Δ). The architecture provides high resolution at MHz speeds with significantly improved power consumption efficiency compared to pipelined A/D converters.

The National CT∑Δ ADC is self-clocked. The integrated clock on our A/D converters eliminates the need for expensive, difficult to design clock circuits. We have designed our CT∑Δ ADCs on a true mixed signal CMOS process. This (the CT∑Δ converter also) enables the integration of extra signal path components like input low noise amplifiers (LNA) & programmable gain amplifiers (PGA) and lower overall system costs.

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