DRV401-EP_09 Datasheet, PDF (6/33 Pages) Texas Instruments – SENSOR SIGNAL CONDITIONING IC FOR SENSOR SIGNAL CONDITIONING IC FOR

DRV401-EP
SBVS104B – JANUARY 2008 – REVISED MARCH 2009 .................................................................................................................................................. www.ti.com
PIN CONFIGURATIONS
Top View
DWP
TERMINAL
NAME
NO.
PWM
1
PWM
2
ERROR
3
DEMAG
4
GAIN
5
REF_OUT
6
REF_IN
7
V_OUT
8
IA_IN2
9
IA_IN1
10
GND2
11
I_COMP2
12
I_COMP1
13
V_DD2
14
CCdiag
15
OVER-RANGE
16
V_DD1
17
IS2
18
GND1
19
IS1
20
Exposed Thermal Pad
–
PWM 1
PWM 2
ERROR 3
DEMAG 4
GAIN 5
REF_OUT 6
REF_IN 7
V_OUT 8
IA_IN2 9
IA_IN1 10
Exposed
Thermal Pad
on Underside,
Connect
to GND1
20 IS1
19 GND1
18 IS2
17 V_DD1
16 OVER- RANGE
15 CCdiag
14 V_DD2
13 I_COMP1
1 2 I_COMP2
11 GND2
Wide- Body SO- 20
PIN ASSIGNMENTS
DESCRIPTION
PWM output from probe circuit (inverted).
PWM output from probe circuit.
Error flag: open-drain output, see the Error Conditions section.
Control input, see the Demagnetization section.
Control input for open-loop gain: low = normal, high = –8 dB.
Output for internal 2.5 V reference voltage.
Input for zero reference to differential amplifier.
Output for differential amplifier.
Connect to GND1.Noninverting input of differential amplifier.
Inverting input of differential amplifier.
Ground connection.
Output 2 of compensation coil driver.
Output 1 of compensation coil driver.
Supply voltage. Connect to V_DD1.
Control input for wire-break detection: high = enable.
Open-drain output for over-range indication: low = over-range.
Supply voltage.
Probe connection 2.
Ground connection.
Probe connection 1.
Connect to GND1.
6
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