DDC264 Datasheet, PDF (7/26 Pages) Texas Instruments – 64-Channel, Current-Input Analog-to-Digital Converter

DDC264
www.ti.com
SBAS368C – MAY 2006 – REVISED JULY 2011
TYPICAL CHARACTERISTICS (continued)
At T_A = +25°C, unless otherwise indicated.
NOISE vs INTEGRATION TIME
NOISE vs INPUT LEVEL
10
DDC264C, 3kSPS
9 _{DDC264CK, 6kSPS}
8 ^CSENSOR ^{= 35pF}
7 ^{Range 3}
6
12
Range 1
10
Range 2
8
5
6
Range 3
4
3
4
2
1
0
0.1
1
10
100
Integration Time (ms)
2 ^{DDC264C, 3kSPS}
DDC264CK, 6kSPS
0 ^{CSENSOR = 35pF}
0
20
40
60
80
100
Percentage of Input (%)
Figure 7.
Figure 8.
NOISE vs TEMPERATURE
40
C_SENSOR = 35pF
35
30
Range 0
25
20
Range 1
15
10
Range 2
5
Range 3
0
0
10
20
30
40
50
60
70
Temperature (°C)
Figure 9.
INPUT BIAS CURRENT vs TEMPERATURE
10
DDC264C, 3kSPS
DDC264CK, 6kSPS
Ranges 1, 2, 3
1
0.1
0.01
0
10
20
30
40
50
60
70
Temperature (°C)
Figure 10.
OFFSET DRIFT vs TEMPERATURE
250
DDC264C, 3kSPS
200 _{DC264CK, 6kSPS}
150 ^{Ranges 1, 2, 3}
100
50
0
-50
-100
-150
-200
-250
25 30 35 40 45 50 55 60 65 70
Temperature (°C)
Figure 11.
OFFSET DRIFT STABILITY OVER TIME HISTOGRAM
12
Repeated measurement
of offset drift taken over
10 _{a 1-min interval}
DDC264C, 3kSPS
DC264CK, 6kSPS
Range 3
8
6
4
2
0
0
Offset Drift (ppm of FSR/min)
Figure 12.
Copyright © 2006–2011, Texas Instruments Incorporated
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