ADS1118_13 Datasheet, PDF (7/38 Pages) Texas Instruments – Ultra-Small, Low-Power, SPI™-Compatible, 16-Bit Analog-to-Digital Converter and Temperature Sensor with Internal Reference

ADS1118
www.ti.com
SBAS457C – OCTOBER 2010 – REVISED FEBRUARY 2013
TYPICAL CHARACTERISTICS
At T_A = +25°C and VDD = 3.3 V, unless otherwise noted.
TOTAL ERROR vs INPUT SIGNAL
4
Includes noise, offset, and gain error.
3
2
DATA RATE vs TEMPERATURE
4
VDD = 2.0 V
3
VDD = 3.3 V
VDD = 5.0 V
2
1
1
0
0
-1
-2
-3
-4
-2.048
FS = ±2.048 V
Data Rate = 860 SPS
Differential Inputs
-1.024
0
Input Signal (V)
Figure 2.
1.024
2.048
−1
−2
−3
−4
−60 −40 −20
0 20 40 60 80
Temperature (°C)
Figure 3.
100 120 140
G028
NOISE vs INPUT SIGNAL
10
FS = ±0.512V
DR = 860SPS
8
6
4
DR = 128SPS
2
DR = 8SPS
0
−0.5 −0.4 −0.3 −0.2 −0.1 0 0.1 0.2 0.3 0.4 0.5
Input Voltage (V)
G017
Figure 4.
NOISE vs SUPPLY VOLTAGE
35
FS = ±2.048V
DR = 860SPS
30
25
20
15
DR = 128SPS
10
DR = 8SPS
5
0
2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5
Supply Voltage (V)
G018
Figure 5.
NOISE vs TEMPERATURE
10
FS = ±2.048V
9 _{Data Rate = 8SPS}
8
7
6
5
4
3
2
1
−40 −20 0 20 40 60 80
Temperature (°C)
Figure 6.
100
120
G019
INL vs SUPPLY VOLTAGE
15
FS = ±0.256V
12.5
FS = ±0.512V
FS = ±2.048V
FS = ±6.144V
10
7.5
5
2.5
0
2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5
Supply Voltage (V)
G010
Figure 7.
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