DRV401-EP Datasheet, PDF (6/33 Pages) Texas Instruments – SENSOR SIGNAL CONDITIONING IC FOR CLOSED-LOOP MAGNETIC CURRENT SENSOR

DRV401-EP
SBVS104 – JANUARY 2008............................................................................................................................................................................................... www.ti.com
PIN CONFIGURATIONS
Top View
DWP
TERMINAL
NAME
NO.
ERROR
1
DMAG
2
GAIN
3
REF_OUT
4
REF_IN
5
V_OUT
6
IA_IN2
7
IA_IN1
8
GND2
9
I_COMP2
10
I_COMP1
11
V_DD2
12
CCdiag
13
OVER-RANGE
14
V_DD1
15
IS2
16
GND1
17
IS1
18
PWM
19
PWM
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
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.
Noninverting input of differential amplifier.
Inverting input of differential amplifier.
Ground connection. Connect to GND1.
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.
PWM output from probe circuit (inverted).
PWM output from probe circuit.
Connect to GND1.
6
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