DRV401-Q1 Datasheet, PDF (9/39 Pages) Texas Instruments – DRV401-Q1 Sensor Signal Conditioning Device for Closed-Loop Magnetic Current Sensor

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DRV401-Q1
SBOS814 – DECEMBER 2016
Typical Characteristics (continued)
at T_A = 25°C and V_DD1 = V_DD2 = 5 V with external 100-kHz filter bandwidth, (unless otherwise noted)
20
20
16
15
12
10
8
4
5
Sample Average
0
0
-4
-5
-8
-10
-12
-16
-15
-20
-50 -25 0
25 50 75
Temperature (°C)
100 125 150
-20
10
100
1k
10 k 100 k 1 M 10 M
Frequency (Hz)
Figure 7. Differential Amplifier: Offset Voltage vs
Temperature, RTO
120
PSRR
100
CMRR
80
60
40
20
0
10
100
1k
10 k
100 k
1M2M
Frequency (Hz)
Figure 8. Differential Amplifier: Gain vs Frequency
5.0
-40°C
25°C
4.9
125°C
4.8
85°C
4.7
0.3
125°C
85°C
0.2
0.1
0
0
12
25°C
-40°C
3 4 5 6 7 8 9 10
Load Current (mA)
Figure 9. Differential Amplifier: PSRR and CMRR vs
Frequency
1000
100
Autozero Frequency = 69 kHz
Sensor Not Running
e_n = 162 nV/ÖHz
(average over 250 Hz to 50 kHz)
10
100
1k
10 k
100 k
1M
Frequency (Hz)
Figure 10. Differential Amplifier: Output Voltage vs Output
Current
25
20
V_OUT Shorted to 5 V
15
10
5
0
-5
-10
-15
-20
V_OUT Shorted to 0 V
-25
-50 -25 0 25 50 75
Temperature (°C)
100 125 150
Figure 11. Differential Amplifier: Output Noise Density
Figure 12. Differential Amplifier: Short-Circuit Current vs
Temperature
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