ACS732KMA datasheet(5/22 Pages) ALLEGRO

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1 MHz Bandwidth, Galvanically Isolated

Current Sensor IC in SOIC-16 Package

ACS732KMA and

ACS733KMA

Allegro MicroSystems

955 Perimeter Road

Manchester, NH 03103-3353 U.S.A.

www.allegromicro.com

Characteristic

Symbol

Test Conditions

Min.

Typ. [1]

Max.

Unit

Supply Voltage

VCC

ACS732

4.75

5.0

5.25

ACS733

3.14

3.3

3.46

Supply Current

ICC

ACS732; VCC = 5.0 V

–

ACS733; VCC = 3.3 V

–

Bypass Capacitor[2]

CBYPASS

VCC to GND

0.1

–

µF

Output Capacitance Load

VIOUT to GND

–

220

Output Resistive Load

VIOUT to GND

–

kΩ

Output Saturation Voltage

VSAT(HIGH)

VCC = 5.0 V, TA = 25°C,

RL(PULLDOWN) = 50 kΩ to GND

VCC – 0.3

–

VCC = 3.3 V, TA = 25°C,

RL(PULLDOWN) = 50 kΩ to GND

VCC – 0.3

–

VSAT(LOW)

VCC = 5.0 V, TA = 25°C,

RL(PULLDOWN) = 50 kΩ to VCC

–

0.5

VCC = 3.3 V, TA = 25°C,

RL(PULLDOWN) = 50 kΩ to VCC

–

0.3

Primary Conductor Resistance

RIP

TA = 25°C

–

0.85

–

mΩ

Primary Hall Coupling Factor

CF(P)

TA = 25°C

–

G/A

Secondary Hall Coupling Factor

CF(s)

TA = 25°C

–

0.35

–

G/A

Hall Plate Sensitivity Matching

Sensmatch

TA = 25°C

–

Common Mode Field Rejection Ratio

CMFRR

TA = 25°C

–

mA/G

Power On Delay Time

tPOD

TA = 25°C; when VCC ≥ VCC(MIN) until

VIOUT = 90% of steady state value

–

180

–

µs

Internal Bandwidth

Small signal –3 dB; CL = 220 pF

–

MHz

Rise Time [3]

TA = 25°C, CL = 0.22 nF

–

0.5

–

μs

Response Time [3]

tRESPONSE

TA = 25°C, CL = 0.22 nF

–

0.3

–

μs

Propagation Delay Time [3]

tpd

TA = 25°C, CL = 0.22 nF

–

0.2

–

µs

Output Slew Rate

TA = 25°C, CL = 0.22 nF

–

3.2

–

V/µs

Zero Current Output Ratiometry Error

ERAT(Q)

TA = 25°C, VCC = ±5 % variation of nominal

supply voltage

–16

±10

Sensitivity Ratiometry Error

ERAT(SENS)

TA = 25°C, VCC = ±5 % variation of nominal

supply voltage

–2

±1.72

Ratiometry Bandwidth

BWRAT

±100 mV on VCC

–

kHz

Linearity Error [4]

ELIN

TA = 25°C, up to full-scale IP

–

±0.5

–

Noise Density

IND

VCC = 5.0 V, TA = 25°C, CL = 220 pF;

input referred

–

120

–

µA/√Hz

VCC = 3.3 V, TA = 25°C, CL = 220 pF;

input referred

–

160

–

µA/√Hz

COMMON ELECTRICAL CHARACTERISTICS: Over full range of TA, over supply voltage range VCC(MIN) through VCC(MAX) of a

sensor variant, CBYPASS = 0.1 µF, unless otherwise specified

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