A3211 and
A3212
Micropower, Ultrasensitive
Hall Effect Switch
3211 MAGNETIC CHARACTERISTICS over operating voltage and temperature range (unless otherwise specified)
Limits
Characteristic
Symbol
Test Conditions
Min.
–
Typ.
37
Max.
55
–
Units
G
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)
Operate Points
–55
10
–
–40
31
G
–
G
Release Points
Hysteresis
–34
5.9
–10
–
G
|BOPx - BRPx
|
–
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)
Limits
Characteristic
Symbol
Test Conditions
Min.
–
Typ.
37
Max.
55
–
Units
G
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)
Operate Points
–55
10
–
–40
31
G
–
G
Release Points
Hysteresis
–34
5.9
–10
–
G
|BOPx - BRPx
|
–
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.
115 Northeast Cutoff, Box 15036
5
Worcester, Massachusetts 01615-0036 (508) 853-5000
www.allegromicro.com
ALLEGRO [ ALLEGRO MICROSYSTEMS ]
