DRV425 Datasheet, PDF (14/37 Pages) Texas Instruments – DRV425 Fluxgate Magnetic-Field Sensor

DRV425
SBOS729 – OCTOBER 2015
Typical Characteristics (continued)
at VDD = 5 V and T_A = 25°C (unless otherwise noted)
1.25
1
0.75
0.5
0.25
0
-0.25
-0.5
-0.75
-1
-1.25
V_VOUT
V_AINP - V_AINN
-0.5
0
0.5
1
1.5
2
2.5
Time (2s)
D050
Rising edge
Figure 43. Shunt-Sense Amplifier Large-Signal
Settling Time
5
4
V_AINP - V_AINN
V_VOUT
3
2
1
0
-1
-2
-3
-4
-5
-0.1 -0.075 -0.05 -0.025 0 0.025 0.05 0.075
Time (ms)
VDD = 5 V
0.1
D036
Figure 45. Shunt-Sense Amplifier Overload Recovery
Response
10000
1000
100
10
10
100
1000
10000
Noise Frequency (Hz)
100000
D038
Figure 47. Shunt-Sense Amplifier Output Voltage Noise
Density vs Noise Frequency
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1.25
1
0.75
V_VOUT
V_AINP - V_AINN
0.5
0.25
0
-0.25
-0.5
-0.75
-1
-1.25
-0.5
0
0.5
1
1.5
2
2.5
Time (2s)
D051
Falling edge
Figure 44. Shunt-Sense Amplifier Large-Signal
Settling Time
5
4
V_AINP - V_AINN
V_VOUT
3
2
1
0
-1
-2
-3
-4
-5
-0.1 -0.075 -0.05 -0.025 0 0.025 0.05 0.075
Time (ms)
VDD = 3.3 V
0.1
D037
Figure 46. Shunt-Sense Amplifier Overload Recovery
Response
70
60
50
40
30
20
10
0
D039
Reference Voltge (V)
V_REFOUT = 2.5 V
Figure 48. Reference Voltage Histogram
14
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