A1391 View Datasheet(PDF) - Allegro MicroSystems

Part Name

Description

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A1391

Micro Power 3 V Linear Hall Effect Sensors with Tri-State Output and User-Selectable Sleep Mode

Allegro MicroSystems 

A1391, A1392,

Micro Power 3 V Linear Hall Effect Sensors with

A1393, and A1395 Tri-State Output and User Selectable Sleep Mode

OUTPUT CHARACTERISTICS valid through full operating ambient temperature range, unless otherwise noted

Characteristic

Symbol

Test Conditions

Min.

Typ.1

Max.

Units

Output Voltage Saturation

Limits2

Maximum Voltage Applied

to Output

VOUTH

VOUTL

B = X, VCC = VCCN, VREF ≤ VCC

B = –X, VCC = VCCN, VREF ≤ VCC

VOUTMAX VSLEEP < VINL

–

VREF – 0.1

–

V

–

0.1

–

V

–

–

VCC + 0.1

V

A1391 TA = 25°C, VCC = VREF = VCCN

–

1.25

–

mV/G

Sensitivity3

Sens A1392 TA = 25°C, VCC = VREF = VCCN

–

A1393 TA = 25°C, VCC = VREF = VCCN

–

2.50

5

–

mV/G

–

mV/G

A1395 TA = 25°C, VCC = VREF = VCCN

–

10

–

mV/G

Quiescent Output

VOUTQ TA = 25°C, B = 0 G

–

0.500 × VREF

–

V

Output Resistance4

ROUT

fout = 1 kHz, VSLEEP > VINH , active mode

fout = 1 kHz, VSLEEP < VINL, sleep mode

–

–

20

4M

–

Ω

–

Ω

Output Load Resistance

RL Output to ground

15

–

–

kΩ

Output Load Capacitance

CL Output to ground

–

–

10

nF

Output Bandwidth

BW

–3 dB point, VOUT = 1 Vpp sinusoidal,

VCC = VCCN

–

10

–

kHz

1391

Cbypass = 0.1 μF,

BWexternalLPF = 2 kHz

–

6

12

mVpp

Cbypass = 0.1 μF, no load

–

–

20

mVpp

Noise5,6

Vn

1392

Cbypass = 0.1 μF, no load

Cbypass = 0.1 μF,

1393 BWexternalLPF = 2 kHz

–

–

–

12

40

mVpp

24

mVpp

Cbypass = 0.1 μF, no load

–

–

40

mVpp

1395 Cbypass = 0.1 μF, no load

–

–

80

mVpp

1Typical data are for initial design estimations only, and assume optimum manufacturing and application conditions, such as TA = 25°C. Performance

may vary for individual units, within the specified maximum and minimum limits.

2This test requires positive and negative magnetic fields sufficient to swing the output driver between fully OFF and saturated (ON), respectively. The

value of vector X is NOT intended to indicate a range of linear operation.

3For VREF values other than VREF = VCCN , the sensitivity can be derived from the following equation: 0.416 × VREF.

4f OUT is the output signal frequency

5Noise specification includes digital and analog noise.

5Values for BWexternalLPF do not include any noise resulting from noise on the externally-supplied VREF voltage.

Allegro MicroSystems, Inc.

4

115 Northeast Cutoff, Box 15036

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

www.allegromicro.com

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