SLVSDR2B November 2018 – March 2021 ADC12DJ3200QML-SP
PRODUCTION DATA
Refer to the PDF data sheet for device specific package drawings
The DDC contains a complex numerically-controlled oscillator (NCO) and a complex mixer. Equation 3 shows the complex exponential sequence generated by the oscillator.
The frequency (ω) is specified by a 32-bit register setting. The complex exponential sequence is multiplied by the real input from the ADC to mix the desired carrier to a frequency equal to fIN + fNCO, where fIN is the analog input frequency after aliasing (in undersampling systems) and fNCO is the programmed NCO frequency.