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Specifications
Operating Current:
5.1uA
Operating Temperature:
-40℃~+150℃
Voltage - Supply:
2.5V~3.5V
Magnetic Field Range:
±6.5mT
Mfr. Part #:
A3212LUA-T
Package:
TO-92S
Key Attributes
Model Number:
A3212LUA-T
Product Description
Product Overview
The A3211 and A3212 are ultrasensitive, pole-independent Hall-effect switches with latched digital output, designed for low-power, battery-operated applications. They feature chopper stabilization for improved stability and can be easily integrated into designs, replacing reed switches with superior reliability. These devices are ideal for portable electronics such as cellular phones, pagers, and palmtop computers.
Product Attributes
- Brand: Allegro MicroSystems, LLC
- Certifications: AEC-Q100 automotive qualified
- Material: Advanced CMOS processing
- Packages: DFN (EH/EL), SOT23W (LH), SIP (UA)
- Lead Finish: 100% matte-tin-plated leadframes (Pb-free suffix T)
Technical Specifications
| Part Number | Package | Ambient Temperature (C) | State in Magnetic Field | Packing |
|---|---|---|---|---|
| A3211EEHLTT | DFN (2 mm 3 mm, 0.75 mm) | 40 to 85 | Off | 3000 pieces per reel |
| A3211EELLTT | DFN (2 mm 2 mm, 0.50 mm) | 40 to 85 | Off | 3000 pieces per reel |
| A3211ELHLTT | SOT23W (3-pin SMD) | 40 to 85 | Off | 3000 pieces per reel |
| A3211ELHLXT | SOT23W (3-pin SMD) | 40 to 85 | Off | 10000 pieces per 13-in. reel |
| A3212EEHLTT | DFN (2 mm 3 mm, 0.75 mm) | 40 to 85 | On | 3000 pieces per reel |
| A3212EELLTT | DFN (2 mm 2 mm, 0.50 mm) | 40 to 85 | On | 3000 pieces per reel |
| A3212ELHLTT | SOT23W (3-pin SMD) | 40 to 85 | On | 3000 pieces per reel |
| A3212ELHLXT | SOT23W (3-pin SMD) | 40 to 85 | On | 10000 pieces per 13-in. reel |
| A3212EUAT | SIP-3 (through hole) | 40 to 85 | On | 500 pieces per bulk bag |
| A3212LLHLTT | SOT23W (3-pin SMD) | 40 to 150 | On | 3000 pieces per reel |
| A3212LLHLXT | SOT23W (3-pin SMD) | 40 to 150 | On | 10000 pieces per 13-in. reel |
| A3212LUAT | SIP-3 (through hole) | 40 to 150 | On | 500 pieces per bulk bag |
| Characteristic | Symbol | Test Conditions | Min. | Typ.* | Max. | Units |
|---|---|---|---|---|---|---|
| Supply Voltage Range | VDD | Operating | 2.5 | 2.75 | 3.5 | V |
| Output Leakage Current | IOFF | VOUT = 3.5 V, Output off | <1.0 | 1.0 | A | |
| Output On Voltage | VOUT | IOUT = 1 mA, VDD = 2.75 V | 100 | 300 | mV | |
| Awake Time | tawake | 45 | 90 | s | ||
| Period | tperiod | 45 | 90 | ms | ||
| Duty Cycle | d.c. | 0.1 | % | |||
| Chopping Frequency | fC | 340 | kHz | |||
| Supply Current (Chip awake) | IDD(EN) | Chip awake (enabled) | 2.0 | mA | ||
| Supply Current (Chip asleep) | IDD(DIS) | Chip asleep (disabled) | 8.0 | A | ||
| Average Supply Current | IDD(AVG) | VDD = 2.75 V | 5.1 | 10 | A | |
| Average Supply Current | IDD(AVG) | VDD = 3.5 V | 6.7 | 10 | A |
| Characteristic | Symbol | Test Conditions | Min. | Typ. | Max. | Units |
|---|---|---|---|---|---|---|
| Operate Points (South Pole) | BOPS | Range E: TA = 40C to 85C; B > BOP, VOUT = High (A3211) | 37 | 55 | G | |
| Range E: TA = 40C to 85C; B > BOP, VOUT = Low (A3212) | 37 | 55 | ||||
| Operate Points (North Pole) | BOPN | Range E: TA = 40C to 85C; B > BOP, VOUT = High (A3211) | 55 | 40 | G | |
| Range E: TA = 40C to 85C; B > BOP, VOUT = Low (A3212) | 55 | 40 | ||||
| Release Points (South Pole) | BRPS | Range E: TA = 40C to 85C; B < BRP, VOUT = Low (A3211) | 10 | 31 | G | |
| Range E: TA = 40C to 85C; B < BRP, VOUT = High (A3212) | 10 | 31 | ||||
| Release Points (North Pole) | BRPN | Range E: TA = 40C to 85C; B < BRP, VOUT = Low (A3211) | 34 | 10 | G | |
| Range E: TA = 40C to 85C; B < BRP, VOUT = High (A3212) | 34 | 10 | ||||
| Hysteresis | BHYS | Range E: TA = 40C to 85C | 5.9 | G | ||
| Range L: TA = 40C to 150C | 5.9 | |||||
| Operate Points (South Pole) | BOPS | Range L: TA = 40C to 150C; B > BOP, VOUT = Low (A3212) | 37 | 65 | G | |
| Range L: TA = 40C to 150C; B > BOP, VOUT = Low (A3212) | 37 | 65 | ||||
| Operate Points (North Pole) | BOPN | Range L: TA = 40C to 150C; B > BOP, VOUT = Low (A3212) | 65 | 40 | G | |
| Range L: TA = 40C to 150C; B > BOP, VOUT = Low (A3212) | 65 | 40 | ||||
| Release Points (South Pole) | BRPS | Range L: TA = 40C to 150C; B < BRP, VOUT = High (A3212) | 10 | 31 | G | |
| Range L: TA = 40C to 150C; B < BRP, VOUT = High (A3212) | 10 | 31 | ||||
| Release Points (North Pole) | BRPN | Range L: TA = 40C to 150C; B < BRP, VOUT = High (A3212) | 34 | 10 | G | |
| Range L: TA = 40C to 150C; B < BRP, VOUT = High (A3212) | 34 | 10 |
1811061513_ALLEGRO-A3212LUA-T_C139822.pdf
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