DRV421_15 Datasheet, PDF (13/44 Pages) Texas Instruments – DRV421 Integrated Magnetic Fluxgate Sensor for Closed-Loop Current Sensing

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Typical Characteristics (continued)
at V_DD = 5 V and T_A = +25°C (unless otherwise noted)
0.25
0.2
V_OUT
V_IN
0.15
0.1
0.05
0
-0.05
-0.1
-0.15
-0.2
-0.25
-2.5 0 2.5 5 7.5 10 12.5 15 17.5
Time (2s)
D049
Falling Edge
Figure 37. Shunt Sense Amplifier Small-Signal Settling Time
1.25
1
0.75
V_OUT
V_IN
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 39. Shunt Sense Amplifier Large-Signal Settling Time
5
4
V_IN
V_OUT
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)
V_DD = 3.3 V
0.1
D037
Figure 41. Shunt Sense Amplifier Overload Recovery
Response
DRV421
SBOS704A – MAY 2015 – REVISED JULY 2015
1.25
1
0.75
0.5
0.25
0
-0.25
-0.5
-0.75
-1
-1.25
V_OUT
V_IN
-0.5
0
0.5
1
1.5
2
2.5
Time (2s)
D050
Rising Edge
Figure 38. Shunt Sense Amplifier Large-Signal Settling Time
5
4
V_IN
V_OUT
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)
V_DD = 5 V
0.1
D036
Figure 40. Shunt Sense Amplifier Overload Recovery
Response
10000
1000
100
10
10
100
1000
10000
Noise Frequency (Hz)
100000
D038
Figure 42. Shunt Sense Amplifier Output Voltage Noise
Density vs Noise Frequency
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