DRV401-EP datasheet(9/36 Pages) TI1

Part #	DRV401-EP

Description	Sensor Signal Conditioning IC for Closed-Loop Magnetic Current Sensor

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Manufacturer	TI1 [Texas Instruments]

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9 / 36 page

DRV401

SBVS070B − JUNE 2006 − REVISED MAY 2009

www.ti.com

9

TYPICAL CHARACTERISTICS (Continued)

At TA = +25°C and VDD1 = VDD2 = +5V with external 100kHz filter BW, unless otherwise noted.

50.250

50.125

50.000

49.875

49.750

49.625

−25

−50

0

25

50

75

100

125

150

DIFFERENTIAL AMPLIFIER:

REF

IN RESISTANCE vs TEMPERATURE

Temperature (

_C)

70

60

50

40

30

20

10

0

1k

100

10k

100k

COMPENSATION LOOP:

SMALL−SIGNAL GAIN

Frequency (Hz)

PinGain= Low

PinGain= High

2000

1500

1000

500

0

−500

−1000

−1500

−2000

−25

−50

0

25

50

75

100

125

150

COMPENSATION LOOP:

DUTY CYCLE ERROR vs TEMPERATURE

Temperature (

_C)

At 400kHz, 5.0V

At 250kHz, 5.0V

COMPENSATION LOOP:

DC GAIN: DUTY CYCLE ERROR CHANGE

Gain (ppm/V)

V

ICOMP1 − VICOMP2 =4.2V

I

LOAD = 210mA

Gain Pin Low

I

COMP OUTPUT SWINGTORAIL

vs OUTPUT CURRENT

5.00

4.75

4.50

4.25

4.00

1.00

0.75

0.50

0.25

0

50

100

150

200

250

300

Output Current (mA)

−50_C

+25

_C

+125

_C

−50_C

+25

_C

+125

_C

35.0

32.5

30.0

27.5

25.0

−25

−50

0

25

50

75

100

125

150

PROBE COMPARATOR THRESHOLD

CURRENT vs TEMPERATURE

Temperature (

_C)

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