ADS7950-Q1 Datasheet, PDF (15/52 Pages) Texas Instruments – ADS79xx-Q1 8-, 10-, and 12-Bit, 1-MSPS, 4-, 8-, 12-, and 16-Channel, Single-Ended, Micropower, Serial Interface, Analog-to-Digital Converters

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ADS7950-Q1, ADS7951-Q1, ADS7952-Q1, ADS7953-Q1, ADS7954-Q1
ADS7956-Q1, ADS7957-Q1, ADS7958-Q1, ADS7959-Q1, ADS7960-Q1, ADS7961-Q1
SBAS652A – MAY 2014 – REVISED AUGUST 2014
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.
-80
90
-81
89
-82
88
-83
87
-84
86
-85
85
-86
84
-87
83
-88
82
-89
-90
2.7
ƒ_sample = 1 MSPS
ƒ_input = 100 kHz
3.4
4.1
4.8
Supply Voltage (V)
T_A = 25°C
5.5
V_(+VBD) = 3 V
81
80
2.7
ƒ_sample = 1 MSPS
ƒ_input = 100 kHz
3.4
4.1
4.8
Supply Voltage (V)
T_A = 25°C
5.5
V_(+VBD) = 3 V
Figure 19. Total Harmonic Distortion (THD) vs Supply
Voltage (V_(+VA))
72
Figure 20. Spurious-Free Dynamic Range (SFDR) vs Supply
Voltage (V_(+VA))
72
71.5
71.5
71
71
70.5
70.5
70
70
69.5
69.5
69
-40
ƒ_sample = 1 MSPS
ƒ_input = 100 kHz
15
70
Free-Air Temperature (°C)
V_(+VA) = 5 V
125
V_(+VBD) = 3 V
Figure 21. Signal-to-Noise Ratio vs Free-Air Temperature
-80
-81
-82
-83
-84
-85
-86
-87
-88
-89
-90
-40
ƒ_sample = 1 MSPS
ƒ_input = 100 kHz
15
70
Free-Air Temperature (°C)
V_(+VA) = 5 V
125
V_(+VBD) = 3 V
Figure 23. Total Harmonic Distortion vs Free-Air
Temperature
69
-40
ƒ_sample = 1 MSPS
ƒ_input = 100 kHz
15
70
Free-Air Temperature (°C)
V_(+VA) = 5 V
125
V_(+VBD) = 3 V
Figure 22. Signal-to-Noise With Distortion vs Free-Air
Temperature
90
89
88
87
86
85
84
83
82
81
80
-40
ƒ_sample = 1 MSPS
ƒ_input = 100 kHz
15
70
Free-Air Temperature (°C)
V_(+VA) = 5 V
125
V_(+VBD) = 3 V
Figure 24. Spurious-Free Dynamic Range vs Free-air
Temperature
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Product Folder Links: ADS7950-Q1 ADS7951-Q1 ADS7952-Q1 ADS7953-Q1 ADS7954-Q1 ADS7956-Q1 ADS7957-
Q1 ADS7958-Q1 ADS7959-Q1 ADS7960-Q1 ADS7961-Q1