ADS1118_13 Datasheet, PDF (9/38 Pages) Texas Instruments – Ultra-Small, Low-Power, SPI™-Compatible, 16-Bit Analog-to-Digital Converter and Temperature Sensor with Internal Reference

ADS1118
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SBAS457C – OCTOBER 2010 – REVISED FEBRUARY 2013
TYPICAL CHARACTERISTICS (continued)
At T_A = +25°C and VDD = 3.3 V, unless otherwise noted.
SINGLE-ENDED OFFSET VOLTAGE vs TEMPERATURE
60
AIN0 to GND
40
AIN1 to GND
AIN2 to GND
AIN3 to GND
20
SINGLE-ENDED OFFSET VOLTAGE vs SUPPLY
60
AIN0 to GND
40
AIN1 to GND
AIN2 to GND
AIN3 to GND
20
0
0
−20
−20
−40
FS = ±2.048V
−60
−40 −20 0
20 40 60
Temperature (°C)
Figure 14.
80 100 120
G004
DIFFERENTIAL OFFSET VOLTAGE vs TEMPERATURE
40
AIN0 to AIN1
30
AIN0 to AIN3
AIN1 to AIN3
20
AIN2 to AIN3
10
0
−10
−20
−30
FS = ±2.048V
−40
−40 −20 0
20 40 60
Temperature (°C)
Figure 16.
80 100 120
G006
−40
FS = ±2.048V
−60
2
2.5
3
3.5
4
4.5
5
Supply Voltage (V)
G005
Figure 15.
DIFFERENTIAL OFFSET VOLTAGE vs SUPPLY
40
AIN0 to AIN1
30
AIN0 to AIN3
AIN1 to AIN3
20
AIN2 to AIN3
10
0
−10
−20
−30
FS = ±2.048V
−40
2
2.5
3
3.5
4
4.5
5
Supply Voltage (V)
G007
Figure 17.
OFFSET DRIFT HISTOGRAM
15
T_A = −40°C to +125°C
FS = ±2.048 V, MUX = AIN0 to AIN3
30 units from one production lot.
10
OFFSET HISTOGRAM
200
540 units from 3 production lots
FS = ±2.048V
150
100
5
50
0
0
Offset Drift (LSB/°C)
G046
Figure 18.
Offset (µV)
G000
Figure 19.
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