DRV401 Datasheet, PDF (5/28 Pages) Burr-Brown (TI) – Sensor Signal Conditioning IC for Closed-Loop Magnetic Current Sensor

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PIN CONFIGURATIONS
Top View
DRV401
SBVS070A − JUNE 2006 − REVISED OCTOBER 2006
RGW Top View
DWP
ERROR 1
DEMAG 2
GAIN 3
REF_OUT 4
REF_IN 5
Exposed
Thermal Pad
on Underside,
Connect
to GND1
15 V_DD1
14 OVER−RANGE
13 CCdiag
12 V_DD2
11 I_COMP1
QFN−20 (5mm x 5mm)
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
NAME
ERROR
DEMAG
GAIN
REF_OUT
REF_IN
V_OUT
IA_IN2
IA_IN1
GND2
I_COMP2
I_COMP1
V_DD2
CCdiag
OVER−RANGE
V_DD1
IS2
GND1
IS1
PWM
PWM
Exposed Thermal Pad
PIN ASSIGNMENTS
NO. DESCRIPTION
1 Error flag: open-drain output, see the Error Conditions section.
2 Control input, see the Demagnetization section.
3 Control input for open-loop gain: low = normal, high = −8dB.
4 Output for internal 2.5V reference voltage.
5 Input for zero reference to differential amplifier.
6 Output for differential amplifier.
7 Noninverting input of differential amplifier.
8 Inverting input of differential amplifier.
9 Ground connection. Connect to GND1.
10 Output 2 of compensation coil driver.
11 Output 1 of compensation coil driver.
12 Supply voltage. Connect to V_DD1.
13 Control input for wire-break detection: high = enable.
14 Open-drain output for over-range indication: low = over-range.
15 Supply voltage.
16 Probe connection 2.
17 Ground connection.
18 Probe connection 1.
19 PWM output from probe circuit (inverted).
20 PWM output from probe circuit.
— Connect to GND1.
5