Datasheet

AD9241
REV. 0
–6–
Typical Differential AC Characterization Curves/Plots
(AVDD = +5 V, DVDD = +5 V, DRVDD = +5 V, f
SAMPLE
=
1.25 MSPS, T
A
= +258C, Differential Input)
INPUT FREQUENCY – MHz
SINAD – dB
80
75
40
0.01
0.1
10.0
1.0
70
65
45
60
55
50
–0.5dBFS
–6.0dBFS
–20dBFS
Figure 2. SINAD vs. Input Frequency
(Input Span = 5 V, V
CM
= 2.5 V)
INPUT FREQUENCY – MHz
SINAD – dB
80
75
40
0.01 0.1 10.01.0
70
65
45
60
55
50
–0.5dBFS
–6.0dBFS
–20.0dBFS
Figure 5. SINAD vs. Input Frequency
(Input Span = 2 V, V
CM
= 2.5 V)
SAMPLE RATE – MSPS
–40
–100
0.1 1.0 10.0
–50
–80
–60
–70
THD – dB
–90
5V SPAN
2V SPAN
Figure 8. THD vs. Sample Rate
(f
IN
= 0.3 MHz, A
IN
= –0.5 dBFS,
V
CM
= 2.5 V)
–0.5dBFS
–6.0dBFS
–20.0dBFS
INPUT FREQUENCY – MHz
THD – dB
–40
–50
–100
0.01 0.1
10.0
1.0
–70
–80
–90
–60
Figure 3. THD vs. Input Frequency
(Input Span = 5 V, V
CM
= 2.5 V)
–0.5dBFS
–6.0dBFS
–20.0dBFS
INPUT FREQUENCY – MHz
THD – dB
–40
–50
–100
0.01 0.1 10.01.0
–70
–80
–90
–60
Figure 6. THD vs. Input Frequency
(Input Span = 2 V, V
CM
= 2.5 V)
AIN – dBFS
SFDR – dBc AND dBFS
110
40
–45
–39 –33 –27 –21 –15
100
90
80
60
50
70
dBc - 5V
dBFS - 5V
dBc - 2V
dBFS - 5V
–9 –3
0
Figure 9. Single Tone SFDR
(f
IN
= 0.6 MHz, V
CM
= 2.5 V)
8
FUND
5
3
2
6
7
9
4
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
0
FREQUENCY – kHz
AMPLITUDE – dB
–110
–120
–130
–140
–150
–160
–170
100 200 300 400 500 600
Figure 4. Typical FFT, f
IN
> 500 kHz
(Input Span = 5 V, V
CM
= 2.5 V)
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
0
FREQUENCY – kHz
AMPLITUDE – dB
–110
–120
–130
–140
–150
–160
–170
100 200 300 400 500 600
FUND
6
7
3
2
5
8
9
4
Figure 7. Typical FFT, f
IN
> 500 kHz
(Input Span = 2 V, V
CM
= 2.5 V)
INPUT POWER LEVEL (f
1
= f
2
) – dBFS
WORST CASE SPURIOUS – dBc AND dBFS
110
60
–40 –35 0
–30 –25 –20 –15 –10 –5
105
90
85
75
65
100
95
80
70
5V SPAN - dBFS
5V SPAN - dBc
2V SPAN - dBFS
2V SPAN - dBc
Figure 10. Dual Tone SFDR
(f
1
= 0.5 MHz, f
2
= 0.6 MHz,
V
CM
= 2.5 V)