The AD2S1200 is a complete 12-bit resolution tracking resolverto-digital converter, integrating an on-board programmablesinusoidal oscillator that provides sine wave excitation forresolvers. An external 8.192 MHz crystal is required to providea precision time reference. This clock is internally divided togenerate a 4.096 MHz clock to drive all the peripherals.The converter accepts 3.6 V p-p ± 10% input signals, in therange of 10 kHz to 20 kHz on the Sin and Cos inputs. A Type IIservo loop is employed to track the inputs and convert the inputSin and Cos information into a digital representation of theinput angle and velocity. The bandwidth of the converter is setinternally to 1.7 kHz with an external 8.192 MHz crystal. Themaximum tracking rate is 1,000 rps.
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