ADS7056
ZHCSG66 –MARCH 2017
www.ti.com.cn
Typical Characteristics (continued)
at TA = 25°C, AVDD = 3.3 V, DVDD = 1.8 V, fIN = 2 kHz, and fSample = 2.5 MSPS (unless otherwise noted)
30000
27000
24000
21000
18000
15000
12000
9000
6000
3000
0
95
93
91
89
87
85
2.35
2.6
2.85
3.1
3.35
3.6
8188 8189 8190 8191 8192 8193 8194 8195 8196
Code
Reference Voltage (V)
D013
D014
Standard deviation of codes = 0.94 LSB, VIN = AVDD / 2
Figure 15. SFDR vs Reference Voltage (AVDD)
Figure 16. DC Input Histogram
2
1
2
Calibrated
Uncalibrated
Calibrated
Uncalibrated
1
0
0
-1
-1
-2
-2
-40
-7
26
59
92
125
2.35
2.6
2.85
3.1
3.35
3.6
Free-Air Temperature (èC)
Reference Voltage (V)
D015
D016
Figure 17. Offset vs Temperature
Figure 18. Offset vs Reference Voltage (AVDD)
0.1
0.05
0
1
Calibrated
Uncalibrated
0.5
0
-0.5
-1
-0.05
-0.1
-40
-7
26
59
92
125
0
3300
6600
9900
13200
16500
Free-Air Temperature (èC)
Code
D017
D019
Figure 19. Gain Error vs Temperature
Figure 20. Typical DNL
10
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