Datasheet

InputFrequency(kHz)
SNR(dB)
80
78
76
74
72
70
0 10010
20 30 40 50 60 70 80 90
5V
3V
InputFrequency(kHz)
SINAD(dB)
80
78
76
74
72
70
0 10010
20 30 40 50 60 70 80 90
5V
3V
InputFrequency(kHz)
SINAD(dB)
-80
-85
-90
-95
-100
0 10010 20 30 40 50 60 70 80 90
5V
3V
InputFrequency(kHz)
SFDR(dB)
100
95
90
85
80
0 10010 20 30 40 50 60 70 80 90
3V
5V
Full-ScaleRange(V)
SNR(dB)
76
74
72
70
68
66
0 51
2 3 4
5V
3V
f =10kHz
IN
Full-ScaleRange(V)
SINAD(dB)
76
74
72
70
68
66
0 51
2 3 4
5V
3V
f =10kHz
IN
ADS7229
ADS7230
www.ti.com ............................................................................................................................................................... SBAS437A – MAY 2008 – REVISED JUNE 2009
TYPICAL CHARACTERISTICS (continued)
At – 40 ° C to +85 ° C, V
REF
[(REF+) – (REF – )] = 5V when +VA = +VBD = 5V or V
REF
[(REF+) – (REF – )] = 2.5V when +VA =
+VBD = 3V, f
SCLK
= 42MHz, or V
REF
= 2.5 when +VA = +VBD = 2.7V, f
SCLK
= 37.8MHz, and f
I
= dc for dc curves, f
I
= 100kHz
for ac curves with 5V supply, and f
I
= 10kHz for ac curves with 3V supply, unless otherwise noted.
SIGNAL-TO-NOISE RATIO SIGNAL-TO-NOISE AND DISTORTION
vs INPUT FREQUENCY vs INPUT FREQUENCY
Figure 18. Figure 19.
TOTAL HARMONIC DISTORTION SPURIOUS-FREE DYNAMIC RANGE
vs INPUT FREQUENCY vs INPUT FREQUENCY
Figure 20. Figure 21.
SIGNAL-TO-NOISE RATIO SIGNAL-TO-NOISE AND DISTORTION
vs FULL-SCALE RANGE vs FULL-SCALE RANGE
Figure 22. Figure 23.
Copyright © 2008 – 2009, Texas Instruments Incorporated Submit Documentation Feedback 17
Product Folder Link(s): ADS7229 ADS7230