Datasheet

Data Sheet AD7763
Rev. B | Page 11 of 32
TYPICAL PERFORMANCE CHARACTERISTICS
AV
DD1
= DV
DD
= V
DRIVE
= 2.5 V, AV
DD2
= AV
DD3
= AV
DD4
= 5 V, V
REF
= 4.096 V, T
A
= 25°C, normal mode, unless otherwise noted. All FFTs
are generated from 65,536 samples using a 7-term Blackman-Harris window.
0
–50
–100
–150
–200
–250
0 5000
15000
10000 30000 35000
2500020000
05476-007
AMPLITUDE (dB)
FREQUENCY (Hz)
Figure 6. Normal Mode FFT, 1 kHz, −0.5 dB Input Tone, 256× Decimation
0
–50
–100
–150
–200
–250
0
5000 1500010000 30000
350002500020000
05476-011
AMPLITUDE (dB)
FREQUENCY (Hz)
Figure 7. Normal Mode FFT, 1 kHz, −0.6 dB Input Tone, 256× Decimation
0
–50
–100
–150
–200
–250
0 5000 15000
10000 30000 35000
2500020000
05476-032
AMPLITUDE (dB)
FREQUENCY (Hz)
Figure 8. Normal Mode FFT, 1 kHz, −60 dB Input Tone, 256× Decimation
0
–50
–100
–150
–200
–250
0 5000
1500010000
30000 35000
25000
20000
05476-006
AMPLITUDE (dB)
FREQUENCY (Hz)
Figure 9. Low Power FFT, 1 kHz, −0.5 dB Input Tone, 256× Decimation
0
–50
–100
–150
–200
–250
0 5000
1500010000 30000 35000
2500020000
05476-010
AMPLITUDE (dB)
FREQUENCY (Hz)
Figure 10. Low Power FFT, 1 kHz, −6 dB Input Tone, 256× Decimation
0
–50
–100
–150
–200
–250
0 5000 1500010000 30000
350002500020000
05476-031
AMPLITUDE (dB)
FREQUENCY (Hz)
Figure 11. Low Power FFT, 1 kHz, −60 dB Input Tone, 256× Decimation