The AD7711A is a complete analog front end for low frequencymeasurement applications. The device accepts low level signalsdirectly from a transducer and outputs a serial digital word. Itemploys a sigma-delta conversion technique to realize up to24 bits of no missing codes performance. The input signal isapplied to a proprietary programmable gain front end basedaround an analog modulator. The modulator output is processedby an on-chip digital filter. The first notch of this digitalfilter can be programmed via the on-chip control register, allowingadjustment of the filter cutoff and settling time.
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