DRV421_15 Datasheet, PDF (7/44 Pages) Texas Instruments – DRV421 Integrated Magnetic Fluxgate Sensor for Closed-Loop Current Sensing

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6.6 Typical Characteristics
at V_DD = 5 V and T_A = +25°C (unless otherwise noted)
50
40
30
20
10
0
Offset (2T)
D001
V_DD = 5 V
Figure 1. Fluxgate Sensor Front-End Offset Histogram
4
3
2
1
0
-1
-2
-3
-4
3
3.5
4
4.5
5
5.5
Supply Voltage (V)
D003
Figure 3. Fluxgate Sensor Front-End Offset vs Supply
Voltage
50
40
30
20
10
0
Offset Drift (nT/GC)
D005
Figure 5. Fluxgate Sensor Front-End Offset Drift Histogram
DRV421
SBOS704A – MAY 2015 – REVISED JULY 2015
50
40
30
20
10
0
Offset (2T)
D002
V_DD = 3.3 V
Figure 2. Fluxgate Sensor Front-End Offset Histogram
4
Device 1
3
Device 2
Device 3
2
1
0
-1
-2
-3
-4
-40 -25 -10 5 20 35 50 65 80 95 110 125
Temperature (°C)
D004
Figure 4. Fluxgate Sensor Front-End Offset vs Temperature
100
10
1
0.1
0.0001 0.001
0.01
0.1
1
Noise Frequency (kHz)
10
100
D006
Figure 6. Fluxgate Sensor Front-End Noise Density vs Noise
Frequency
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