ADS5474_16 Datasheet, PDF (15/41 Pages) Texas Instruments – 14-Bit, 400-MSPS Analog-to-Digital Converter

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ADS5474
SLAS525C – JULY 2007 – REVISED JANUARY 2016
Typical Characteristics (continued)
At T_A = 25°C, sampling rate = 400 MSPS, 50% clock duty cycle, 3-V_PP differential sinusoidal clock, analog input amplitude =
–1 dBFS, AVDD5 = 5 V, AVDD3 = 3.3 V, and DVDD3 = 3.3 V, unless otherwise noted.
100
2f₂ - f₁ (dBc)
90
90
f_S = 400 MSPS
88 ^fIN ^{= 230 MHz}
80
2f₁ - f₂ (dBc)
70
60
86
84
+40°C
82
+65°C
+25°C
50
80
40
30
20
Worst Spur (dBc)
10
78
76
-40°C
74
72
0°C +85°C
+100°C
0
-100 -90 -80 -70 -60 -50 -40 -30 -20 -10 0
A_IN - dBFS
70
4.7
4.8
4.9
5.0
5.1
5.2
5.3
AVDD5 - Supply Voltage - V
Figure 20. Two-Tone Performance vs Input Amplitude (f1 =
297.5 MHz and f2 = 302.5 MHz)
71.0
70.5
f_S = 400 MSPS
f_IN = 230 MHz
+65°C
+25°C
+40°C
70.0
69.5
0°C
69.0
-40°C _+85°C
+100°C
68.5
68.0
4.7
4.8
4.9
5.0
5.1
5.2
5.3
AVDD5 - Supply Voltage - V
Figure 21. SFDR vs AVDD5 Over Temperature
90
f_S = 400 MSPS
88 ^fIN ^{= 230 MHz}
86
84
+65°C
82
+25°C
+40°C
80
78
+85°C
76
+100°C
74
0°C
-40°C
72
70
3.0
3.1
3.2
3.3
3.4
3.5
3.6
AVDD3 - Supply Voltage - V
Figure 22. SNR vs AVDD5 Over Temperature
71.0
70.5
f_S = 400 MSPS
f_IN = 230 MHz
+40°C
+65°C +25°C
70.0
69.5
0°C
69.0
-40°C
+85°C
+100°C
68.5
68.0
3.0
3.1
3.2
3.3
3.4
3.5
3.6
AVDD3 - Supply Voltage - V
Figure 23. SFDR vs AVDD3 Over Temperature
90
f_S = 400 MSPS
88
f_IN = 230 MHz
86
84
82 _+65°C
80
+25°C
+40°C
78
76
-40°C
74
+85°C 0°C +100°C
72
70
3.0
3.1
3.2
3.3
3.4
3.5
3.6
DVDD3 - Supply Voltage - V
Figure 24. SNR vs AVDD3 Over Temperature
Figure 25. SFDR vs DVDD3 Over Temperature
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