etween each of the signals, the 3rd-order products. For IF sampling, even order in- thereby effectively reducing the largest possible input termodulation products are generally not a problem be- signal. As a guideline, if all signals are at the same level, cause they most often fall away from the signal of interest each time the number of carriers is doubled, the largest and are easily filtered from the spectrum of the input to any of them can be is reduced by 3 dB of power. For the ADC input. example, if two signals are present, each signal must be 3 dB below the clipping point. If 4 are present, 6 dB and Signal dynamic range 8 must have 9 dB and SO on. Therefore, for applications Signal dynamic range is the difference between the where many signals are present, the effective dynamic range is limited. largest and the smallest signal that can be detected. If the Similarly, there are reasons that the noise floor will receiver is properly designed, the ADC will determine the dynamic range. The fullscale range of the ADC will increase above that calculated in Equation (2.3.4). One example of this is seen through reciprocal mixing be- determine the largest signal as already established by reworking Equation (2.3.1). Likewise, the smallest de- tween the phase noise of the LO and a nearby blocking signal, resulting in an increase in the noise floor of the tectable signal will be set directly or indirectly by the mixer. A similar example is seen in the increase in the noise floor of the converter. Ideally, the noise from the AFE will dominate the total noise because it has been converter noise floor associated with the "reciprocal mixing" between the same blocker and the aperture placed as much as 10 dB above the converter noise floor. If the front-end noise floor is much less than 10 dB, jitter of the ADC. Fortunately, if the converter noise then the contribution to total noise from the ADC will floor is adequately below that of the AFE, variations increase and must be included in the overall noise cal- of several dB i