Datasheet

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SBAS306F − NOVEMBER 2004 − REVISED OCTOBER 2007
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11
TYPICAL CHARACTERISTICS (continued)
T
A
= 25°C, AVDD = 5V, DVDD = 1.8V, f
CLK
= 27MHz, VREFP = 2.5V, VREFN = 0V, unless otherwise noted.
Figure 19
ABSOLUTE OFFSET DRIFT HISTOGRAM
13579111315171921
Absolute Offset Drift (
µ
V/
_
C)
60
50
40
30
20
10
0
Occurrences (%)
outliers: T <
−
20
_
C
30 units, based on 20
_
C intervals
over the range
−
40
_
C to +105
_
C
Figure 20
GAIN DRIFT HISTOGRAM
−
6.0
−
5.5
−
5.0
−
4.5
−
4.0
−
3.5
−
3.0
−
2.5
−
2.0
−
1.5
−
1.0
−
0.5
0
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0
Gain Drift (ppm/
_
C)
15
10
5
0
Occurrences (%)
30 units, based on 20
_
C
intervals over the range
−
40
_
Cto+105
_
C
Figure 21
OFFSET POWER−ON WARMUP
0102030405060
Time After Power−On (s)
40
30
20
10
0
−
10
−
20
−
30
−
40
Normalized Offset (
µ
V)
High−Speed Mode
DVDD = 3.3V
Response
Band
Figure 22
GAIN ERROR POWER−ON WARMUP
0 102030405060
Time After Power−On (s)
10
8
6
4
2
0
−
2
−
4
−
6
−
8
−
10
Normalized Gain Error (ppm)
High−Speed Mode
DVDD = 3.3V
Response
Band
Figure 23
UNCALIBRATED OFFSET HISTOGRAM
−
500
−
450
−
400
−
350
−
300
−
250
−
200
−
150
−
100
−
50
0
50
100 150 200 250 300
Uncalibrated Offset (
µ
V)
30
20
10
0
Units (%)
High−Speed Mode
30 Units
Figure 24
GAIN ERROR HISTOGRAM
−
2350
−
2300
−
2250
−
2200
−
2150
−
2100
−
2050
−
2000
−
1950
−
1900
−
1850
−
1800
−
1750
−
1700
−
1650
−
1600
Gain Error (ppm)
50
40
30
20
10
0
Units (%)
High−Speed Mode
30 Units