Datasheet

InputVoltage,V
IN
(V)
Noise(ppmofFSR,rms)
5-5 -4 -3 -2 -1 0 1 2 3 4
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
High-ResolutionMode
BufferOff
InputVoltage,V (V)
IN
Noise(ppmofFSR,rms)
-3.5 -2.5 -1.5 -0.5 0.5 1.5 2.5 3.5
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
High-ResolutionMode
BufferOn
OutputCode
Occurrence
-10-15 -5-20-25 50 10 15 20 3025-30
80
70
60
50
40
30
20
10
0
High-ResolutionMode
High-SpeedMode
OutputCode
-160 -120
-80
-40
0
40 80
120 160
Occurrence
250
200
150
100
50
0
Temperature(°C)
DataPeriod(SPS)
120
110
100
90
80
70
0
-25
25 50 75 125
-50
100
Temperature(°C)
DataPeriod(SPS)
21
18
15
12
0
-25
25 50 75 125
-50
100
ADS1225
ADS1226
www.ti.com ....................................................................................................................................................... SBAS346C – MAY 2006 – REVISED JANUARY 2009
TYPICAL CHARACTERISTICS (continued)
At T
A
= +25 ° C, AVDD = +5V, DVDD = +3V, and V
REF
= +5V, unless otherwise noted.
NOISE vs INPUT VOLTAGE NOISE vs INPUT VOLTAGE
Figure 13. Figure 14.
NOISE HISTOGRAM NOISE HISTOGRAM
Figure 15. Figure 16.
HIGH-SPEED MODE DATA RATE HIGH-RESOLUTION MODE DATA RATE
vs TEMPERATURE vs TEMPERATURE
Figure 17. Figure 18.
Copyright © 2006 – 2009, Texas Instruments Incorporated Submit Documentation Feedback 9
Product Folder Link(s): ADS1225 ADS1226