DRV421_16 Datasheet, PDF (3/44 Pages) Texas Instruments – Integrated Magnetic Fluxgate Sensor for Closed-Loop Current Sensing

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5 Pin Configuration and Functions
RTJ Package
20-Pin WQFN
Top View
DRV421
SBOS704B – MAY 2015 – REVISED MARCH 2016
GSEL0 1
RSEL1 2
RSEL0 3
REFOUT 4
REFIN 5
(Thermal Pad)
15 OR
14 AINN
13 AINP
12 ICOMP1
11 ICOMP2
NAME
AINN
AINP
DEMAG
ER
GND
GSEL0
GSEL1
ICOMP1
ICOMP2
OR
REFIN
REFOUT
RSEL0
RSEL1
PIN
NO.
14
13
18
19
7, 10, 16, 17
1
20
12
11
15
5
4
3
2
VDD
8, 9
VOUT
6
PowerPAD™
Pin Functions
I/O
DESCRIPTION
I
Inverting input of shunt sense amplifier
I
Noninverting input of shunt sense amplifier
I
Degauss control input
O
Error flag; open-drain, active low output
—
Ground reference
I
Gain and bandwidth selection input 0
I
Gain and bandwidth selection input 1
O
Output 1 of compensation coil driver
O
Output 2 of compensation coil driver
O
Shunt sense amplifier overrange indicator; open-drain, active-low output
I
Common-mode reference input for the shunt sense amplifier
O
Voltage reference output
I
Voltage reference mode selection input 0
I
Voltage reference mode selection input 1
Supply voltage, 3.0 V to 5.5 V. Decouple both pins using 1-µF ceramic capacitors placed as
—
close as possible to the device. See the Power-Supply Decoupling and Layout sections for
further details.
O
Shunt sense amplifier output
—
Connect thermal pad to GND
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