LTC1420, A-to-D Converter Does Frequency Translation

Under sampling 40MHz Performs 2-Stage Frequency Translation to 100Hz Using LTC1420 ADC and LTC1668 DAC. The 10Msps LTC1420 translates the 40.455MHz input signal to 455kHz at its output. When a high speed DAC is used to reproduce the 455kHz signal, a subsequent analog bandpass filter adds little cost or power dissipation