ADS5242 Datasheet, PDF (17/29 Pages) Texas Instruments – 4-Channel, 12-Bit, 65MSPS Analog-to-Digital Converter with Serial LVDS Interface

ADS5242
www.ti.com
SBAS330C – OCTOBER 2004 – REVISED OCTOBER 2005
TYPICAL CHARACTERISTICS (continued)
T_MIN = –40°C and T_MAX = +85°C. Typical values are at T_A = +25°C, clock frequency = maximum specified, 50% clock duty
cycle, AVDD = 3.3V, LVDD = 3.3V, –1dBFS, I_SET = 56.2kΩ, internal voltage reference, LVDS buffer current at 3.5mA per
channel, 16kFFT, and 8 averages, unless otherwise noted.
80
70
60
50
40
30
20
10
0
−60
SWEPT POWER — SINAD
f_IN = 5MHz
−50
−40
−30
−20
−10
0
Amplitude (dBFS)
Figure 19.
SNR vs DUTY CYCLE
74
73
72
71
70
69
68
67
30 35 40 45 50 55 60 65 70
Duty Cycle (%)
Figure 21.
SFDR vs DUTY CYCLE
95
f_IN = 5MHz
90
85
80
75
70
30 35 40 45 50 55 60 65 70
Duty Cycle (%)
Figure 23.
SWEPT POWER — SFDR
120
f_IN = 5MHz
100
80
60
40
20
0
−60
−50
−40
−30
−20
−10
0
Amplitude (dBFS)
Figure 20.
SINAD vs DUTY CYCLE
74
f_IN = 5MHz
73
72
71
70
69
68
67
30 35 40 45 50 55 60 65 70
Duty Cycle (%)
Figure 22.
SNR vs SAMPLE RATE
76
f_IN = 5MHz
74
72
70
68
66
64
20 25 30 35 40 45 50 55 60 65
Sample Rate (MSPS)
Figure 24.
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