DRV421_16 Datasheet, PDF (14/44 Pages) Texas Instruments – Integrated Magnetic Fluxgate Sensor for Closed-Loop Current Sensing

DRV421
SBOS704B – MAY 2015 – REVISED MARCH 2016
Typical Characteristics (continued)
at V_DD = 5 V and T_A = +25°C (unless otherwise noted)
50
40
30
20
10
0
D039
Reference Voltge (V)
Figure 43. Reference Voltage Histogram
30
25
20
15
10
5
0
Reference Voltage Drift (ppm/qC)
D041
Figure 45. Reference Voltage Drift Histogram
3
RSEL[1:0] = 00
2.8
RESL[1:0] = 01
RSEL[1:0] = 1x
2.6
2.4
2.2
2
1.8
1.6
1.4
-5 -4 -3 -2 -1 0 1 2 3 4 5
Referene Current (mA)
D043
Figure 47. Reference Voltage vs Reference Output Current
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2.55
Device 1
2.54
Device 2
2.53
Device 3
2.52
2.51
2.5
2.49
2.48
2.47
2.46
2.45
-40 -25 -10 5 20 35 50 65 80 95 110 125
Temperature (°C)
D040
Figure 44. Reference Voltage vs Temperature
3
RSEL[1:0] = 00
2.8
RSEL[1:0] = 01
2.6
2.4
2.2
2
1.8
1.6
1.4
3
3.5
4
4.5
5
Supply Voltage (V)
5.5
D042
Figure 46. Reference Voltage vs Supply Voltage
50
40
30
20
10
0
D044
Power-Supply Rejection Ratio (PV/V)
Figure 48. Reference Voltage Power-Supply Rejection Ratio
Histogram
14
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