A1171 Просмотр технического описания (PDF) - Allegro MicroSystems

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A1171

Micropower Ultrasensitive Hall Ef fect Switch

Allegro MicroSystems 

A1171

Micropower Ultrasensitive Hall Effect Switch

(A) VOUTPN

V+

V+

VOUT(HIGH)

(B) VOUTPS

VOUT(HIGH)

0

B–

VOUT(SAT)

0 B+

0

B– 0

BHYS

BHYS

Figure 2. Operation with Unipolar Mode Selected (SELECT Pin Grounded)

VOUT(SAT)

B+

SELECT Pin Settings Effect on Output

Output Pin

Number Name

SELECT Pin

Configuration

Tied to VDD or floating

1

VOUTPS

Tied to ground

Tied to VDD or floating

2

VOUTPN

Tied to ground

Output Description

Omnipolar output; ON with magnetic field of sufficient

strength (B < BOPN or B > BOPS); OFF with low-strength

or no magnetic field (BRPN < B < BRPS)

Unipolar output; ON with south polarity magnetic field of

sufficient strength (B > BOPS)

Omnipolar output; OFF with magnetic field of sufficient

strength (B < BOPN or B > BOPS); ON with low-strength or

no magnetic field (BRPN < B < BRPS)

Unipolar output; ON with north polarity magnetic field of

sufficient strength (B < BOPN)

Allegro MicroSystems, LLC

6

115 Northeast Cutoff

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

1.508.853.5000; www.allegromicro.com

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