AD7763
0
–50
–100
–150
–200
–250
0
50000 100000 150000 200000 250000 300000
FREQUENCY (Hz)
Figure 12. Normal Mode FFT, 100 kHz, −0.5 dB Input Tone, 32× Decimation
0
–50
–100
–150
–200
–250
0
50000 100000 150000 200000 250000 300000
FREQUENCY (Hz)
Figure 13. Normal Mode FFT, 100 kHz, −6 dB Input Tone, 32× Decimation
120
–60dB
118
116
–6dB
114
112
–0.5dB
110
108
106
0
64
128
192
256
DECIMATION RATE (×)
Figure 14. Normal Mode SNR vs. Decimation Rate, 1 kHz Input Tone
Data Sheet
0
–50
–100
–150
–200
–250
0
50000 100000 150000 200000 250000 300000
FREQUENCY (Hz)
Figure 15. Low Power FFT, 100 kHz, −0.5 dB Input Tone, 32× Decimation
0
–50
–100
–150
–200
–250
0
50000 100000 150000 200000 250000 300000
FREQUENCY (Hz)
Figure 16. Low Power FFT, 100 kHz, −6 dB Input Tone, 32× Decimation
116
–60dB
114
–6dB
112
–0.5dB
110
108
106
104
0
64
128
192
256
DECIMATION RATE (×)
Figure 17. Low Power SNR vs. Decimation Rate, 1 kHz Input Tone
Rev. B | Page 12 of 32