ACS730 datasheet(4/18 Pages) ALLEGRO

4 / 18 page

1 MHz Bandwidth, Galvanically Isolated Current Sensor IC

in Small Footprint SOIC8 Package

ACS730

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.

Unit

Supply Voltage

VCC

4.5

5.5

Supply Current

ICC

VCC = 5 V, output open

–

Power-On Time

tPO

TA = 25°C

–

150

–

μs

Output Capacitance Load

VIOUT to GND

–

0.47

Reference Capacitance Load

CVZCR

VZCR to GND

–

Output Resistive Load

VIOUT to GND, VIOUT to VCC

–

kΩ

Reference Resistive Load

RVZCR

VIOUT to GND, VZCR to VCC

–

kΩ

Output High Saturation Voltage2

VOH

VIOUT, TA = 25°C

VCC – 0.4

VCC – 0.3

–

Output Low Saturation Voltage2

VOL

VIOUT, TA = 25°C

–

0.1

0.2

Primary Conductor Resistance

RIP

TA = 25°C

–

1.2

–

mΩ

Magnetic Coupling Factor

MCF

TA = 25°C

–

G/A

Rise Time

TA = 25°C, CL = 0.47 nF, 1 V step on output

–

0.6

–

μs

Response Time

tRESPONSE

TA = 25°C, CL = 0.47 nF, 1 V step on output

–

0.7

–

μs

Internal Bandwidth

Small signal –3 dB; CL = 0.47 nF

–

MHz

Noise Density

IND(rms)

Input referenced noise density;

TA = 25°C, CL = 0.47 nF

–

µA(rms)/

√

Power Supply Rejection Ratio

PSRR

0 to 200 Hz, 100 mV pk-pk ripple on VCC,

IP = 0 A, VIOUT and VZCR

–

Sensitivity Power Supply Rejection Ratio

SPSRR

DC, VCC(min) < VCC < VCC(max), IP =

IPR(max)

–

Offset Power Supply Rejection Ratio

OPSRR

DC, VCC(min) < VCC < VCC(max)

–

Output Source Current

IOUT(src)

VIOUT shorted to GND

–

5.5

–

Output Sink Current

IOUT(snk)

VIOUT shorted to VCC

–

Zero Current Reference Voltage

VZCR

TA = 25°C

–

2.5

–

Zero Current Reference Offset Voltage

VZCR(ofs)

TA = 25°C

–10

±3

TA = 25°C to 125°C

–20

±10

TA = –40°C to 25°C

–

±10

–

Reference Source Current

IVZCR(src)

VZCR shorted to GND

–

Reference Sink Current

IVZCR(snk)

VZCR shored to VCC

–

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 over full range of TA , VCC= 5 V, unless otherwise specified

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