DRV401-EP Datasheet, PDF (10/33 Pages) Texas Instruments – SENSOR SIGNAL CONDITIONING IC FOR CLOSED-LOOP MAGNETIC CURRENT SENSOR

DRV401-EP
SBVS104 – JANUARY 2008............................................................................................................................................................................................... www.ti.com
TYPICAL CHARACTERISTICS (continued)
At T_A = +25°C and V_DD1 = V_DD2 = +5 V with external 100 kHz filter BW, unless otherwise noted.
50.250
DIFFERENTIAL AMPLIFIER:
REF_IN RESISTANCE vs TEMPERATURE
COMPENSATION LOOP:
SMALL−SIGNAL GAIN
70
50.125
50.000
49.875
49.750
60
50
40
Pin Gain = High
30
20
10
Pin Gain = Low
49.625
−50 −25 0
25 50 75 100 125 150
Temperature (_ C)
2000
COMPENSATION LOOP:
DUTY CYCLE ERROR vs TEMPERATURE
1500
1000
500
0
−500
At 250kHz, 5.0V
−1000
−1500
At 400kHz, 5.0V
−2000
−50 −25 0
25 50 75 100 125 150
Temperature (_ C)
5.00
4.75
4.50
4.25
4.00
1.00
0.75
0.50
0.25
0
0
I_COMP OUTPUT SWING TO RAIL
vs OUTPUT CURRENT
+125_C +25_ C −50_ C
+125_C +25^_ C −50_ C
50
100
150
200
250
300
Output Current (mA)
0
100
1k
10k
Frequency (Hz)
COMPENSATION LOOP:
DC GAIN: DUTY CYCLE ERROR CHANGE
V_ICOMP1 − V_ICOMP2 = 4.2V
I_LOAD = 210mA
Gain Pin Low
100k
Gain (ppm/V)
PROBE COMPARATOR THRESHOLD
CURRENT vs TEMPERATURE
35.0
32.5
30.0
27.5
25.0
−50 −25 0
25 50 75 100 125 150
Temperature (_ C)
10
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