Datasheet

1.002
1.001
1.000
0.999
0.998
0.997
0.996
0.995
0.994
0.993
0.992
0.991
AVDD(V)
NormalizedOutputCurrent
2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0
750 Am
250 Am
1.5mA
500 Am
100 Am
1mA
50 Am
IDACCurrentSettings
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
-
-
-
-
-
-
Temperature( C)°
DataRateError(%)
-40 -20 0 20 40 60 80 100 120
DVDD=5V
DVDD=3.3V
−120
−100
−80
−60
−40
−20
0
0 200 400 600 800 1000
Time (hours)
Reference Drift (ppm)
32 Units
G000
0.004
0.003
0.002
0.001
0
-0.001
-0.002
-0.003
-0.004
Temperature( C)°
IEXC1 IEXC2(- mA)
-40 -20 0 20 40 60 80 100 120
1.5mASetting,10Units
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
1.1
0 1 2 3 4 5
Voltage (V)
Normalized IDAC Current
50µA
100µA
250µA
500µA
750µA
1mA
1.5mA
0.98
0.985
0.99
0.995
1
1.005
1.01
0 1 2 3 4 5
Voltage (V)
Normalized IDAC Current
ADS1146
ADS1147
ADS1148
SBAS453F –JULY 2009–REVISED APRIL 2012 www.ti.com
TYPICAL CHARACTERISTICS (continued)
At T
A
= +25°C, AVDD = 5V, V
REF
= 2.5V, and AVSS = 0V, unless otherwise noted.
DATA RATE ERROR vs TEMPERATURE IDAC LINE REGULATION
Figure 11. Figure 12.
IDAC DRIFT INTERNAL REFERENCE LONG TERM DRIFT
Figure 13. Figure 14.
IDAC VOLTAGE COMPLIANCE IDAC VOLTAGE COMPLIANCE
Figure 15. Figure 16.
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