A3212 Просмотр технического описания (PDF) - Allegro MicroSystems

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A3212

Micropower, Ultra-sensitive Hall-ef fect Switches

Allegro MicroSystems 

A3211 and

A3212

Micropower, Ultrasensitive

Hall Effect Switch

3211 MAGNETIC CHARACTERISTICS over operating voltage and temperature range (unless otherwise specified)

Characteristic Symbol

Test Conditions

Operate Points

Release Points

Hysteresis

BOPS

BOPN

BRPS

BRPN

BHYS

South pole to branded side; B > BOP, VOUT = High (Output Off)

North pole to branded side; B > BOP, VOUT = High (Output Off)

South pole to branded side; B < BRP, VOUT = Low (Output On)

North pole to branded side; B < BRP, VOUT = Low (Output On)

|BOPx - BRPx|

Min.

–

–55

10

–

–

Limits

Typ. Max.

37

55

–40

–

31

–

–34

–10

5.9

–

Units

G

G

G

G

G

NOTES: 1. Negative flux densities are defined as less than zero (algebraic convention), i.e., -50 G is less than +10 G.

2. BOPx = operate point (output turns off); BRPx = release point (output turns on).

3. Typical Data is at TA = +25°C and VDD = 2.75 V and is for design information only.

4. 1 gauss (G) is exactly equal to 0.1 millitesla (mT).

3212 MAGNETIC CHARACTERISTICS over operating voltage and temperature range (unless otherwise specified)

Characteristic Symbol

Test Conditions

Operate Points

Release Points

Hysteresis

BOPS

BOPN

BRPS

BRPN

BHYS

South pole to branded side; B > BOP, VOUT = Low (Output On)

North pole to branded side; B > BOP, VOUT = Low (Output On)

South pole to branded side; B < BRP, VOUT = High (Output Off)

North pole to branded side; B < BRP, VOUT = High (Output Off)

|BOPx - BRPx|

Min.

–

–55

10

–

–

Limits

Typ. Max.

37

55

–40

–

31

–

–34

–10

5.9

–

Units

G

G

G

G

G

NOTES: 1. Negative flux densities are defined as less than zero (algebraic convention), i.e., -50 G is less than +10 G.

2. BOPx = operate point (output turns on); BRPx = release point (output turns off).

3. Typical Data is at TA = +25°C and VDD = 2.75 V and is for design information only.

4. 1 gauss (G) is exactly equal to 0.1 millitesla (mT).

Allegro MicroSystems, Inc.

5

115 Northeast Cutoff, Box 15036

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

www.allegromicro.com

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