ADS5272_13 Datasheet, PDF (15/33 Pages) Texas Instruments – 8-Channel, 12-Bit, 65MSPS ADC

ADS5272
www.ti.com...................................................................................................................................................... SBAS324C – JUNE 2004 – REVISED JANUARY 2009
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.
DIFFERENTIAL NONLINEARITY
0.45
f_IN = 5MHz
0.30
0.15
0
−0.15
−0.30
−0.45
0
80
75
512 1024 1536 2048 2560 3072 3584 4096
Code
Figure 7.
SNR vs INPUT FREQUENCY
External Reference
REF_T = 1.95V
REF_B = 0.95V
70
65
60
55
0
100
95
90
85
80
75
70
0
10 20 30 40 50 60 70 80
Input Frequency (MHz)
Figure 9.
SFDR vs INPUT FREQUENCY
External Reference
REF_T = 1.95V
REF_B = 0.95V
10 20 30 40 50 60 70 80
Input Frequency (MHz)
Figure 11.
0.60
0.45
0.30
0.15
0
−0.15
−0.30
−0.45
−0.60
0
80
75
70
INTEGRAL NONLINEARITY
f_IN = 5MHz
512 1024 1536 2048 2560 3072 3584 4096
Code
Figure 8.
SINAD vs INPUT FREQUENCY
External Reference
REF_T = 1.95V
REF_B = 0.95V
65
60
55
50
0
80
75
10 20 30 40 50 60 70 80
Input Frequency (MHz)
Figure 10.
SNR vs INPUT FREQUENCY
Internal Reference
70
65
60
55
0 10 20 30 40 50 60 70 80
Input Frequency (MHz)
Figure 12.
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