ADS7863_14 Datasheet, PDF (10/44 Pages) Texas Instruments – Dual, 2MSPS, 12-Bit, 2 + 2 or 3 + 3 Channel, Simultaneous Sampling ANALOG-TO-DIGITAL CONVERTER

ADS7863
SBAS383E – JUNE 2007 – REVISED JANUARY 2011
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TYPICAL CHARACTERISTICS (continued)
Over entire supply voltage range, V_REF = 2.5V (internal), f_CLK = 32MHz, and t_DATA = 2MSPS, unless otherwise noted.
OFFSET ERROR AND OFFSET MATCH
OFFSET ERROR AND OFFSET MATCH
vs ANALOG SUPPLY VOLTAGE
vs TEMPERATURE
1.0
2.0
0.8
1.5
0.6
1.0
0.4
Offset Match
0.2
0.5
Offset Match
0
0
Offset
-0.2
Offset
-0.5
-0.4
-0.6
-1.0
-0.8
-1.5
-1.0
2.7 3.0 3.3 3.6 3.9 4.2 4.5 4.8 5.1 5.5
AV_DD (V)
-2.0
-40 -25 -10 5
20 35 50 65 80 95 110 125
Temperature (°C)
Figure 9.
Figure 10.
GAIN ERROR AND GAIN MATCH
vs ANALOG SUPPLY VOLTAGE
0.10
0.05
0
-0.05
Gain Match
Gain
-0.10
2.7 3.0 3.3 3.6 3.9 4.2 4.5 4.8 5.1 5.5
AV_DD (V)
Figure 11.
GAIN ERROR AND GAIN MATCH
vs TEMPERATURE
0.20
0.15
Gain Match
0.10
0.05
0
-0.05
Gain
-0.10
-0.15
-0.20
-40 -25 -10 5
20 35 50 65 80 95 110 125
Temperature (°C)
Figure 12.
COMMON-MODE REJECTION RATIO
vs ANALOG SUPPLY VOLTAGE
74.0
73.5
73.0
72.5
72.0
71.5
71.0
70.5
70.0
2.7 3.0 3.3 3.6 3.9 4.2 4.5 4.8 5.1 5.5
AV_DD (V)
Figure 13.
COMMON-MODE REJECTION RATIO
vs TEMPERATURE
74.0
73.5
73.0
72.5
72.0
71.5
71.0
70.5
70.0
-40 -25 -10 5
20 35 50 65 80 95 110 125
Temperature (°C)
Figure 14.
10
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