High Accuracy, Hall-effect Based Current Sensor

IC in High Isolation SOIC16 Package

ACS723KMA

4

Allegro MicroSystems, LLC

115 Northeast Cutoff

Worcester, Massachusetts 01615-0036 U.S.A.

1.508.853.5000; www.allegromicro.com

Master Current

Supply

Programming

Control

EEPROM and

Control Logic

Offset

Control

Sensitivity

Control

Tuned

Filter

Temperature

Sensor

Hall

Current

Drive

POR

To All Subcircuits

IP+

IP+

IP+

IP+

IP

IP

IP

–

–

–

IP

–

VCC

VIOUT

GND

BW_SEL

Terminal List Table

Number

Name

Description

1, 2, 3, 4

IP+

Terminals for current being sensed; fused internally

5, 6, 7, 8

IP-

Terminals for current being sensed; fused internally

9, 16

NC

No internal connection; recommended to be left unconnected in order to

maintain high creepage.

10

VCC

Device power supply terminal

11, 14

NC

No internal connection; recommened to connect to GND for the best ESD

performance

12

VIOUT

Analog output signal

13

BW_SEL

Terminal for selecting 20 kHz or 80 kHz bandwidth

15

GND

Signal ground terminal

Functional Block Diagram

Pin-out Diagram

1

IP+

2

IP+

3

IP+

4

IP+

5

IP-

6

IP-

7

IP-

8

IP-

9 NC

10 VCC

11 NC

12 VIOUT

13 BW_SEL

14 NC

15 GND

16 NC