ADS8885_14 Datasheet, PDF (16/49 Pages) Texas Instruments – 18-Bit, 400-kSPS, Serial Interface, microPower, Miniature, True-Differential Input, SAR Analog-to-Digital Converter

ADS8885
SBAS568A – MAY 2013 – REVISED DECEMBER 2013
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TYPICAL CHARACTERISTICS (continued)
At T_A = +25°C, AVDD = 3 V, DVDD = 3 V, V_REF = 5 V, and f_SAMPLE = 400 kSPS, unless otherwise noted.
8000
16000
7000
6000
AVDD = 3 V
REF = 5 V
T_A = 25^oC
15000 Devices
14000
12000
AVDD = 3 V
REF = 5 V
T_A = 25ƒC
15000 Devices
5000
10000
4000
8000
3000
6000
2000
4000
1000
2000
0
-4 -3 -2 -1 0 1 2 3 4
Offset (mV)
C03
Figure 42. TYPICAL DISTRIBUTION OF OFFSET ERROR
0
±1.0
±0.5
0.0
0.5
1.0
Differential Nonlinearity Min and Max (LSB)
1.5
C038
Figure 43. TYPICAL DISTRIBUTION OF DIFFERENTIAL
NONLINEARITY (Minimum and Maximum)
14000
12000
10000
AVDD = 3 V
REF = 5 V
T_A = 25ƒC
15000 Devices
8000
6000
4000
2000
0
±3.0 ±2.5 ±2.0 ±1.5 ±1.0 ±0.5 0.0 0.5 1.0 1.5 2.0 2.5 3.0
Integral Nonlinearity Min and Max (LSB)
C039
Figure 44. TYPICAL DISTRIBUTION OF INTEGRAL
NONLINEARITY (Minimum and Maximum)
16
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