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SFDR − Spurious Free Dynamic Range − dB 90
91
92
93
94
95
−40 −25 −10 5 20 35 50 65 80
T
A
− Free-Air Temperature − C
f
i
= 50 kHz,
Full Scale Input,
+VA = 5 V,
+VBD = 3 V,
Int Ref = 4.096 V
−95
−94
−93
−92
−91
−90
−40 −25 −10 5 20 35 50 65 80
T
A
− Free-Air Temperature − C
THD − Total Harmonic Distortion − dB
f
i
= 50 kHz,
Full Scale Input,
+VA = 5 V,
+VBD = 3 V,
Int Ref = 4.096 V
13.4
13.45
13.5
13.55
13.6
13.65
13.7
13.75
13.8
13.85
13.9
0 10 20 30 40 50 60 70 80 90 100
ENOB − Effective Number of Bits − Bits
f
i
− Input Frequency − kHz
f
i
= 50 kHz,
Full Scale Input,
+VA = 5 V,
+VBD = 3 V,
Int Ref = 4.096 V
SNR − Signal-to-Noise Ratio − dB
f
i
− Input Frequency − kHz
86
86.1
86.2
86.3
86.4
86.5
86.6
86.7
86.8
86.9
0 10 20 30 40 50 60 70 80 90 100
f
i
= 50 kHz,
Full Scale Input,
+VA = 5 V,
+VBD = 3 V,
Int Ref = 4.096 V
SINAD − Signal-to-Noise and Distortion − dB
82.5
83
83.5
84
84.5
85
85.5
0 10 20 30 40 50 60 70 80 90 100
f
i
= 50 kHz,
Full Scale Input,
+VA = 5 V,
+VBD = 3 V,
Int Ref = 4.096 V
f
i
− Input Frequency − kHz
91
92
93
94
95
96
97
98
99
100
101
0 10 20 30 40 50 60 70 80 90 100
f
i
− Input Frequency − kHz
SFDR − Spurious Free Dynamic Range − dB
f
i
= 50 kHz,
Full Scale Input,
+VA = 5 V,
+VBD = 3 V,
Int Ref = 4.096 V
ADS8405
SLAS427 – DECEMBER 2004
TYPICAL CHARACTERISTICS (continued)
SPURIOUS FREE DYNAMIC RANGE TOTAL HARMONIC DISTORTION
vs vs
FREE-AIR TEMPERATURE FREE-AIR TEMPERATURE
Figure 10. Figure 11.
SIGNAL-TO-NOISE RATIO EFFECTIVE NUMBER OF BITS
vs vs
INPUT FREQUENCY INPUT FREQUENCY
Figure 12. Figure 13.
SIGNAL-TO-NOISE AND DISTORTION SPURIOUS FREE DYNAMIC RANGE
vs vs
INPUT FREQUENCY INPUT FREQUENCY
Figure 14. Figure 15.
14