ACS716 データシートの表示（PDF） - Allegro MicroSystems

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ACS716

120 kHz Bandwidth, High Voltage Isolation Current Sensor with Integrated Overcurrent Detection

Allegro MicroSystems 

ACS716

120 kHz Bandwidth, High Voltage Isolation

Current Sensor with Integrated Overcurrent Detection

Functional Block Diagram

Non-Latching Versions

VCC

VOC

FAULT_EN

IP+

IP–

Hall

Bias

POR

2VREF

Sensitivity

Trim

Fault

Comparator

FAULT Reset

OC Fault

Signal

Recovery

Hall

Amplifier

GND

RF(INT)

VOUT(Q)

Trim

FILTER

Drain

FAULT

3 mA

VZCR

VIOUT

Pin-out Diagram

IP+ 1

IP+ 2

IP+ 3

IP+ 4

IP– 5

IP– 6

IP– 7

IP– 8

16 FAULT_EN

15 VOC

14 VCC

13 FAULT

12 VIOUT

11 FILTER

10 VZCR

9 GND

Terminal List Table, Non-Latching Version

Number

1 through 4

5 through 8

9

10

11

12

13

14

15

Name

IP+

IP–

GND

VZCR

FILTER

VIOUT

¯F¯ ¯A ¯U ¯¯L¯ ¯T¯

VCC

VOC

Description

Sensed current copper conduction path pins. Terminals for current being sensed;

fused internally, loop to IP– pins; unidirectional or bidirectional current flow.

Sensed current copper conduction path pins. Terminals for current being sensed;

fused internally, loop to IP+ pins; unidirectional or bidirectional current flow.

Device ground connection.

Voltage Reference Output pin. Zero current (0 A) reference; output voltage on this

pin scales with VCC . (Not a highly accurate reference.)

Filter pin. Terminal for an external capacitor connected from this pin to GND to set

the device bandwidth.

Analog Output pin. Output voltage on this pin is proportional to current flowing

through the loop between the IP+ pins and IP– pins.

Overcurrent Fault pin. When current flowing between IP+ pins and IP– pins

exceeds the overcurrent fault threshold, this pin transitions to a logic low state.

Supply voltage.

Overcurrent Input pin. Analog input voltage on this pin sets the overcurrent fault

threshold.

16

FAULT_EN Enables overcurrent faulting when high.

Allegro MicroSystems, LLC

5

115 Northeast Cutoff

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

1.508.853.5000; www.allegromicro.com

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