AD9653
Data Sheet
Rev. 0 | Page 18 of 40
Figure 30. Single-Tone 16k FFT with fIN = 15 MHz,
fSAMPLE = 80 MSPS, VREF = 1.3 V
Figure 31. Single-Tone 16k FFT with fIN = 64.5 MHz,
fSAMPLE = 80 MSPS, VREF = 1.3 V
Figure 32. SNR/SFDR vs. Input Amplitude (AIN), fIN = 9.7 MHz,
fSAMPLE = 125 MSPS, VREF = 1.3 V
Figure 33. Two-Tone 16k FFT with fIN1 = 70.5 MHz and fIN2 = 72.5 MHz,
fSAMPLE = 125 MSPS, VREF = 1.3 V
Figure 34. Two-Tone SFDR/IMD3 vs. Input Amplitude (AIN) with
fIN1 = 70.5 MHz and fIN2 = 72.5 MHz, fSAMPLE = 125 MSPS, VREF = 1.3 V
Figure 35. SNR/SFDR vs. fIN, fSAMPLE = 125 MSPS, Clock Divider = 8, VREF = 1.3 V
0
–30
–60
–15
–45
–75
–90
–105
–120
–135
8
+
2
3
12
4
0
16
20
24
28
32
36
40
A
MPL
IT
U
D
E
(d
B
F
S)
FREQUENCY (MHz)
80MSPS
15MHz AT –1dBFS
SNR = 79.0dB (80.0dBFS)
SFDR = 90.5dBc
10538-
030
6
4
5
0
–30
–60
–15
–45
–75
–90
–105
–120
–135
8
+
2
3
12
4
0
16
20
24
28
32
36
40
A
MPL
IT
U
D
E
(d
B
F
S)
FREQUENCY (MHz)
80MSPS
15MHz AT –1dBFS
SNR = 76.7dB (77.7dBFS)
SFDR = 82.1dBc
10538-
031
6
4
5
–20
0
20
40
60
80
100
120
–100
–90
–80
–70
–60
–50
–40
–30
–20
–10
0
S
NR/
S
F
DR
(
d
BF
S
/d
Bc)
INPUT AMPLITUDE (dBFS)
SFDRFS
SNRFS
SFDR
SNR
10538-
032
0
–30
–60
–15
–45
–75
–90
–105
–120
–135
0
12
F2 – F1
F1 + F2
+
2F2 + F1
2F1 + F2
2F2 – F1
2F1 – F2
18
6
24
30
36
42
48
60
54
A
MPL
IT
U
D
E
(d
B
F
S)
FREQUENCY (MHz)
10538-
033
IMD3 (dBc)
–120
–100
–80
–60
–40
–20
0
–90
–70
–50
–30
–10
S
F
DR/
IM
D3
(
d
Bc/
d
BF
S
)
INPUT AMPLITUDE (dBFS)
IMD3 (dBFS)
SFDR (dBFS)
SFDR (dBc)
10538-
034
0
10
20
30
40
50
60
70
80
90
100
0
20
40
60
80
100
120
140
160
180
200
S
NR/
S
F
DR
(
d
BF
S
/d
Bc)
INPUT FREQUENCY (MHz)
SFDR (dBc)
SNR (dBFS)
10538-
035