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Ratiometric Linear Hall Effect Sensor ICs

for High-Temperature Operation

A1321, A1322,

and A1323

Allegro MicroSystems, Inc.

115 Northeast Cutoff

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

1.508.853.5000; www.allegromicro.com

Typical Characteristics

(30 pieces, 3 fabrication lots)

Average Supply Current (I

) vs Temperature

= 5 V

0.5

1.5

2.5

3.5

4.5

5.5

6.5

7.5

-40

-20

115

125

150

(°C)

(mA)

Average Positive Linearity (Lin+) vs Temperature

= 5 V

100

101

102

103

104

105

-40

-20

115

125

150

(°C)

Lin+ (%)

Average Negative Linearity (Lin–) vs Temperature

= 5 V

100

101

102

103

104

105

-40

-20

115

125

150

(°C)

Lin

–

(%)

Average Ratiometry, V

OUT(q)(ΔV)

vs Temperature

99.2

99.4

99.6

99.8

100

100.2

100.4

100.6

100.8

101

-40

-20

115

125

150

(°C)

Ratiometry (%)

4.5 to 5.0 V

5.5 to 5.0 V

Average Ratiometry, ΔSens

(ΔV),

vs Temperature

99.2

99.4

99.6

99.8

100

100.2

100.4

100.6

100.8

101

-40

-20

115

125

150

(°C)

Ratiometry (%)

4.5 to 5.0V

5.5 to 5.0V

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