ACS723KMA datasheet(5/17 Pages) ALLEGRO

5 / 17 page

High Accuracy, Hall-effect Based Current Sensor

IC in High Isolation SOIC16 Package

ACS723KMA

Allegro MicroSystems, LLC

115 Northeast Cutoff

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

1.508.853.5000; www.allegromicro.com

Characteristic

Symbol

Test Conditions

Min.

Typ.

Max.

Units

Supply Voltage

VCC

4.5

5.5

Supply Current

ICC

VCC within VCC(min) and VCC(max)

–

Output Capacitance Load

VIOUT to GND

–

Output Resistive Load

VIOUT to GND

4.7

–

kΩ

Primary Conductor Resistance

RIP

TA = 25°C

–

0.85

–

mΩ

Magnetic Coupling Factor

–

4.5

–

G/A

Rise Time

IP = IP(max), TA = 25°C, CL = 1 nF,

BW_SEL tied to GND

–

μs

IP = IP(max), TA = 25°C, CL = 1 nF,

BW_SEL tied to VCC

–

17.5

–

μs

Propagation Delay

tpd

IP = IP(max), TA = 25°C, CL = 1 nF,

BW_SEL tied to GND

–

μs

IP = IP(max), TA = 25°C, CL = 1 nF,

BW_SEL tied to VCC

–

μs

Response Time

tRESPONSE

IP = IP(max), TA = 25°C, CL = 1 nF,

BW_SEL tied to GND

–

μs

IP = IP(max), TA = 25°C, CL = 1 nF,

BW_SEL tied to VCC

–

22.5

–

μs

Internal Bandwidth

BWi

Small signal –3 dB; CL = 1 nF,

BW_SEL tied to GND

–

kHz

Small signal –3 dB; CL = 1nF,

BW_SEL tied to VCC

–

kHz

Noise Density

IND

Input referenced noise density;

TA = 25°C, CL = 1 nF

–

220

–

µA(rms)/

√

Noise

Input referenced noise; BWi = 80 kHz,

TA = 25°C, CL = 1 nF

–

mA(rms)

Input referenced noise; BWi = 20 kHz,

TA = 25°C, CL = 1 nF

–

mA(rms)

Nonlinearity

ELIN

Through full range of IP

–

±1

Saturation Voltage2

VOH

RL = 4.7 kΩ, TA = 25°C

VCC – 0.5

–

VOL

RL = 4.7 kΩ, TA = 25°C

–

0.5

Power-On Time

tPO

Output reaches 90% of steady-state

level, TA = 25°C, IP = IPR(max) applied

–

μs

Device may be operated at higher primary current levels, IP, ambient temperatures, TA, and internal leadframe temperatures, provided the Maximum Junction Tempera-

ture, TJ(max), is not exceeded.

The sensor IC will continue to respond to current beyond the range of IP until the high or low saturation voltage; however, the nonlinearity in this region will be worse than

through the rest of the measurement range.

COMMON ELECTRICAL CHARACTERISTICS1: valid through the full range of TA = –40°C to 125°C, and at VCC=

5 V; unless otherwise specified

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