CS5560

DS713PP1

21

3/25/08

Figure 15 illustrates the device with a small signal 1/1,000,000 of full scale. The signal input for figure 14

is about 8.2 microvolts peak to peak, or about 17 codes peak to peak. Figure 16 illustrates the converter

with a signal at about 2.6 microvolts peak to peak, or about 5 codes peak to peak. The CS5560 achieves

superb performance with this small signal. And the noise floor exhibits no spurious components due to

digital interference from the on chip logic.

Frequency (Hz)

5.55 kHz, -120 dB

32k Samples @ 50 kSps

Frequency (Hz)

5.55 kHz, -130 dB

32k Samples @ 50 kSps

Figure 15. Spectral Performance, -120 dB

Figure 16. Spectral Performance, -130 dB