Datasheet

AD7764
Rev. A | Page 12 of 32
0 100k 150k50k
AMPLITUDE (dB)
FREQUENCY (Hz)
06518-200
0
–25
–50
–75
–100
–125
–150
–175
Figure 12. Normal Power Mode, FFT,1 kHz, −6 dB Input Tone,
64× Decimation Rate
0 50k 75k25k
AMPLITUDE (dB)
FREQUENCY (Hz)
06518-201
0
–25
–50
–75
–100
–125
–150
–175
Figure 13. Normal Power Mode, FFT,1 kHz, −6 dB Input Tone,
128× Decimation Rate
0 35k30k25k20k15k10k5k
AMPLITUDE (dB)
FREQUENCY (Hz)
06518-202
0
–25
–50
–75
–100
–125
–150
–175
Figure 14. Normal Power Mode, FFT,1 kHz, −6 dB Input Tone,
256× Decimation Rate
0 100k 150k50k
AMPLITUDE (dB)
FREQUENCY (Hz)
06518-203
0
–25
–50
–75
–100
–125
–150
–175
Figure 15. Low Power Mode, FFT,1 kHz, 6 dB Input Tone,
64× Decimation Rate
0 50k 75k25k
AMPLITUDE (dB)
FREQUENCY (Hz)
06518-204
0
–25
–50
–75
–100
–125
–150
–175
Figure 16. Low Power Mode, FFT,1 kHz, −6 dB Input Tone,
128× Decimation Rate
0 35k30k25k20k15k10k5k
AMPLITUDE (dB)
FREQUENCY (Hz)
06518-205
0
–25
–50
–75
–100
–125
–150
–175
Figure 17. Low Power Mode, FFT,1 kHz, −6 dB Input Tone,
256× Decimation Rate