
A1321, A1322, and A1323
Ratiometric Linear Hall Effect Sensor for 
Typical Characteristics
(30 pieces, 3 fabrication lots)
Average Supply Current (ICC) vs Temperature
| 
 | 8 | 
 | 
 | Vcc = 5 V | 
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| 
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| 
 | 7.5 | 
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| 
 | 7 | 
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| 
 | 6.5 | 
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| 
 | 6 | 
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| 
 | 5.5 | 
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| (mA) | 5 | 
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| 4.5 | 
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| 4 | 
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| CC | 3.5 | 
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| I | 3 | 
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| 
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| 
 | 2.5 | 
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| 
 | 2 | 
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| 
 | 1.5 | 
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| 
 | 1 | 
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| 
 | 0.5 | 
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| 
 | 0 | 
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 | 25 | 85 | 115 | 125 | 150 | 
| 
 | 0 | |||||||
| 
 | 
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 | TA (°C) | 
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 | 
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Average Positive Linearity (Lin+) vs Temperature
| 
 | 105 | 
 | 
 | Vcc = 5 V | 
 | 
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| 
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| 
 | 104 | 
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| 
 | 103 | 
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| 
 | 102 | 
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| (%) | 101 | 
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| 100 | 
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| Lin+ | 
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| 99 | 
 | 
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 | |
| 
 | 
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| 
 | 98 | 
 | 
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| 
 | 97 | 
 | 
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| 
 | 96 | 
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| 
 | 95 | 
 | 
 | 25 | 85 | 115 | 125 | 150 | 
| 
 | 0 | |||||||
| 
 | 
 | 
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 | TA (°C) | 
 | 
 | 
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| 
 | 
 | Average Negative Linearity  | 
 | |||||
| 
 | 105 | 
 | 
 | Vcc = 5 V | 
 | 
 | 
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| 
 | 
 | 
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| 
 | 104 | 
 | 
 | 
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| 
 | 103 | 
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| 
 | 102 | 
 | 
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| (%) | 101 | 
 | 
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| 100 | 
 | 
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 | |
| Lin– | 
 | 
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| 99 | 
 | 
 | 
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 | |
| 
 | 
 | 
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 | 
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| 
 | 98 | 
 | 
 | 
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| 
 | 97 | 
 | 
 | 
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| 
 | 96 | 
 | 
 | 
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 | 
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| 
 | 95 | 
 | 0 | 
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| 
 | 25 | 85 | 115 | 125 | 150 | |||
| 
 | 
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 | TA (°C) | 
 | 
 | 
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 | 
Average Ratiometry, VOUT(q)(ΔV) vs Temperature
| 
 | 101 | 
 | 
 | 
 | 
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| 
 | 100.8 | 
 | 
 | 
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 | 
 | 
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| 
 | 100.6 | 
 | 
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 | 
 | 4.5 to 5.0 V | 
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| 
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 | 5.5 to 5.0 V | 
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 | |
| 
 | 100.4 | 
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| (%) | 
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| 100.2 | 
 | 
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| Ratiometry | 100 | 
 | 
 | 
 | 
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| 99.8 | 
 | 
 | 
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| 99.6 | 
 | 
 | 
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| 
 | 99.4 | 
 | 
 | 
 | 
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| 
 | 99.2 | 
 | 
 | 
 | 
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| 
 | 99 | 
 | 
 | 
 | 
 | 115 | 125 | 150 | 
| 
 | 0 | 25 | 85 | |||||
| 
 | 
 | 
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 | TA (°C) | 
 | 
 | 
 | 
 | 
Average Ratiometry, ΔSens(ΔV), vs Temperature
| 
 | 101 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
| 
 | 100.8 | 
 | 4.5 to 5.0V | 
 | 
 | 
 | 
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| 
 | 100.6 | 
 | 5.5 to 5.0V | 
 | 
 | 
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| 
 | 
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| (%) | 100.4 | 
 | 
 | 
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| 100.2 | 
 | 
 | 
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 | |
| Ratiometry | 100 | 
 | 
 | 
 | 
 | 
 | 
 | 
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| 99.8 | 
 | 
 | 
 | 
 | 
 | 
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| 99.6 | 
 | 
 | 
 | 
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| 
 | 99.4 | 
 | 
 | 
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| 
 | 99.2 | 
 | 
 | 
 | 
 | 
 | 
 | 
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| 
 | 99 | 
 | 
 | 25 | 85 | 115 | 125 | 150 | 
| 
 | 0 | |||||||
| 
 | 
 | 
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 | 
 | TA (°C) | 
 | 
 | 
 | 
Continued on the next page...
| Allegro MicroSystems, Inc. | 6 | 
115 Northeast Cutoff
Worcester, Massachusetts 
