Datasheet

69
69.5
70
70.5
71
71.5
72
72.5
73
10 30 50 70 90 110 130 150
f -InputFrequency-KHz
IN
SNR-Signal-to-NoiseRatio-dB
+VA =5V
+VBD=3V,
f =1MSPS,
T =25°C,
MXOShortedto AINP
S
A
69
69.5
70
70.5
71
71.5
72
72.5
73
10 30 50 70 90 110 130 150
f -InputFrequency-KHz
IN
SINAD-Signal-to-NoiseandDistortion-dB
+VA =5V
+VBD=3V,
f =1MSPS,
T =25°C,
MXOShortedto AINP
S
A
-90
-88
-86
-84
-82
-80
-78
-76
-74
-72
-70
10 30 50 70 90 110 130 150
f -InputFrequency-KHz
IN
THD-TotalHarmonicDistortion-dB
+VA =5V
+VBD=3V,
f =1MSPS,
T =25°C,
MXOShortedto AINP
S
A
70
75
80
85
90
95
100
10 30 50 70 90 110 130 150
f -InputFrequency-KHz
IN
SFDR-SpuriousFreeDynamicRange-dB
+VA =5V
+VBD=3V,
f =1MSPS,
T =25°C,
MXOShortedto AINP
S
A
69
69.5
70
70.5
71
71.5
72
20 40 60 80 100
10 W
f -InputFrequency-KHz
IN
SINAD-Signal-to-NoiseandDistortion-dB
100 W
500 W
1000 W
+VA =5V
+VBD=5V,
f =1MSPS,
T =25°C,
BufferBetweenMXOand AINP
S
A
-90
-88
-86
-84
-82
-80
-78
-76
-74
-72
-70
20 40 60 80 100
10 W
100 W
500 W
1000 W
THD-TotalHarmonicDistortion-dB
f -InputFrequency-KHz
IN
+VA =5V
+VBD=5V,
f =1MSPS,
T =25°C,
BufferBetweenMXOand AINP
S
A
ADS7950, ADS7951, ADS7952, ADS7953
ADS7954, ADS7955, ADS7956, ADS7957
ADS7958, ADS7959, ADS7960, ADS7961
www.ti.com SLAS605A –JUNE 2008–REVISED JANUARY 2010
TYPICAL CHARACTERISTICS (12-Bit Devices Only) (continued)
Variations for 10-bit and 8-bit devices are too small to be illustrated through the characteristic curves
SIGNAL-TO-NOISE RATIO SIGNAL-TO-NOISE + DISTORTION TOTAL HARMONIC DISTORTION
vs vs vs
INPUT FREQUENCY INPUT FREQUENCY INPUT FREQUENCY
Figure 25. Figure 26. Figure 27.
SIGNAL-TO-NOISE + DISTORTION TOTAL HARMONIC DISTORTION
vs vs
SPURIOUS FREE DYNAMIC RANGE INPUT FREQUENCY INPUT FREQUENCY
vs (Across Different Source Resistance (Across Different Source Resistance
INPUT FREQUENCY Values) Values)
Figure 28. Figure 29. Figure 30.
Copyright © 2008–2010, Texas Instruments Incorporated Submit Documentation Feedback 19
Product Folder Link(s): ADS7950, ADS7951, ADS7952, ADS7953 ADS7954, ADS7955, ADS7956, ADS7957 ADS7958,
ADS7959, ADS7960, ADS7961