A1302 datasheet(3/8 Pages) ALLEGRO

3 / 8 page

Continuous-Time Ratiometric

Linear Hall Effect Sensors

A1301 and

A1302

Allegro MicroSystems, Inc.

115 Northeast Cutoff, Box 15036

Worcester, Massachusetts 01615-0036 (508) 853-5000

www.allegromicro.com

DEVICE CHARACTERISTICS over operating temperature range, TA, and VCC = 5 V, unless otherwise noted

Characteristic

Symbol

Test Conditions

Min.

Typ.

Max.

Units

Electrical Characteristics

Supply Voltage

VCC

Running, TJ < 165°C

4.5

–

Supply Current

ICC

Output open

–

Output Voltage

VOUT(High) ISOURCE = –1 mA, Sens = nominal

4.65

4.7

–

VOUT(Low)

ISINK = 1 mA, Sens = nominal

–

0.2

0.25

Output Bandwidth

–

kHz

Power-On Time

tPO

VCC(min) to 0.95 VOUT; B = ±1400 G;

Slew rate = 4.5 V/μs to 4.5 V/100 ns

–35

μs

Output Resistance

ROUT

ISINK ≤ 1 mA, ISOURCE ≥ –1 mA

–

Wide Band Output Noise, rms

VOUTN

External output low pass filter ≤ 10 kHz;

Sens = nominal

–

150

–

μV

Ratiometry

Quiescent Output Voltage Error

with respect to ΔVCC1

ΔVOUTQ(V) TA = 25°C

–

±3.0

Magnetic Sensitivity Error with

respect to ΔVCC2

ΔSens(V)

TA = 25°C

–

±3.0

Output

Linearity

Lin

TA = 25°C

–

±2.5

Symmetry

Sym

TA = 25°C

–

±3.0

Magnetic Characteristics

Quiescent Output Voltage

VOUTQ

B = 0 G; TA = 25°C

2.4

2.5

2.6

Quiescent Output Voltage over

Operating Temperature Range

VOUTQ(ΔT

B = 0 G

2.2

–

2.8

Magnetic Sensitivity

Sens

A1301; TA = 25°C

2.0

2.5

3.0

mV/G

A1302; TA = 25°C

1.0

1.3

1.6

mV/G

Magnetic Sensitivity over

Operating Temperature Range

Sens(ΔT

A1301

1.8

–

3.2

mV/G

A1302

0.85

–

1.75

mV/G

1Refer to equation (4) in Ratiometric section on page 4.

2Refer to equation (5) in Ratiometric section on page 4.

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