AFE8201 SBWS016A − OCTOBER 2003 − REVISED JANUARY 2005 IF Analog-to-Digital Converter with Digital Downconverter FEATURES D D 12-BIT, 80MSPS ADC INTEGRATED DIGITAL DOWNCONVERTER (DDC): DESCRIPTION The AFE8201 consists of a general-purpose, 80MSPS, 12-bit analog-to-digital converter (ADC), a digital downconverter (DDC), and user-programmable digital filters.
It is designed to sample narrowband (2.
5MHz or less) IF signals and digitally mix, filter, and decimate the signals to baseband.
The DDC consists of a digital quadrature mixer followed by a CIC decimation filter and FIR filters.
The mixer frequency and initial phase are independently programmed by 32-bit control words.
D D D D D Quadr...

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