Datasheet

AD9260
Rev. C | Page 21 of 44
ADDITIONAL AC CHARACTERIZATION CURVES
AVDD = DVDD = DRVDD = +5 V, 4 V Input Span, A
IN
= –0.5 dBFS, Differential DC Coupled Input with CML = 2 V, Full Bias, unless
otherwise noted.
80
85
90
95
100
105
SFDR (dBFS)
110
115
120
–50 –45 –40 –35 –30 –25 –20 –15 –10 –5 0
A
IN
(dBFS)
00581-C-053
20 MSPS
FULL BIAS
20 MSPS
HALF BIAS
10 MSPS
FULL BIAS
10 MSPS
HALF BIAS
Figure 53. Single-Tone SFDR vs. Amplitude (f
IN
= 100 kHz, 8x Mode)
80
85
90
95
100
105
110
SFDR (dBFS)
–50 –45 –40 –35 –30 –25 –20 –15 –10 –5 0
A
IN
(dBFS)
00581-C-054
20 MSPS
FULL BIAS
10 MSPS
FULL BIAS
10 MSPS
HALF BIAS
Figure 54. Single-Tone SFDR vs. Amplitude (f
IN
= 1.0 MHz)
80
85
90
95
100
105
110
SFDR (dBFS)
–50 –45 –40 –35 –30 –25 –20 –15 –10 –5 0
A
IN
(dBFS)
00581-C-055
20 MSPS
FULL BIAS
10 MSPS
FULL BIAS
10 MSPS
HALF BIAS
Figure 55. Single-Tone SFDR vs. Amplitude (f
IN
= 500 kHz, 2x Mode)
50
60
70
80
90
100
110
120
WORST SPUR (dBc AND dBFS)
–40 –30–60 –50 –20 –10 0
A
IN
(dBFS)
00581-C-056
20 MSPS (dBc)
FULL BIAS
20 MSPS (dBFS)
FULL BIAS
10 MSPS (dBFS)
HALF BIAS
10 MSPS (dBc)
HALF BIAS
Figure 56. Two-Tone SFDR (F
1
= 475 kHz, F
2
= 525 MHz, 8x Mode)
50
60
70
80
90
100
110
120
WORST SPUR (dBc AND dBFS)
–40 –30–60 –50 –20 –10 0
A
IN
(dBFS)
00581-C-057
FULL BIAS (dBc)
FULL BIAS (dBFS)
HALF BIAS (dBFS)
HALF BIAS (dBc)
Figure 57. Two-Tone SFDR (F
1
= 0.95 kHz, F
2
= 1.05 MHz, 8x Mode, 20 MSPS)
50
60
70
80
90
100
110
120
WORST SPUR (dBc AND dBFS)
–40 –30–60 –50 –20 –10 0
A
IN
(dBFS)
00581-C-058
dBc
dBFS
Figure 58. Two-Tone SFDR (F
1
= 1.9 MHz, F
2
= 2.1 MHz, 4x Mode 20 MSPS)