Key facts
- Brand
- Allegro
- Model
- A3211
- Industry
- Industrial
- Documents
- 3
- Languages
- EN
- Last added
- 2012-07-10
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Allegro MicroSystems A3211/A3212 Hall-Effect Switch Datasheet
The A3211 and A3212 are integrated circuits designed as ultra-sensitive, pole-independent Hall-effect switches with latched digital outputs. These devices are optimized for battery-operated, hand-held equipment such as cellular phones, pagers, and palmtop computers, offering low power consumption and high reliability.
Read onlineAllegro A3211 specifications
| Supply Voltage Range | 2.5 V to 3.5 V |
|---|---|
| Output Leakage Current | < 1.0 uA |
| Output On Voltage | 100 to 300 mV |
| Average Supply Current (Awake) | 2.0 mA |
| Average Supply Current (Asleep) | 8.0 uA |
| Chopping Frequency | 340 kHz |
| Operating Temperature Range (Range 'E-') | -40°C to +85°C |
| Operating Temperature Range (Range 'L-') | -40°C to +150°C |
Source: Allegro MicroSystems A3211/A3212 Hall-Effect Switch Datasheet
All Allegro A3211 documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What is the supply voltage range for the A3211 and A3212?
The devices operate with a supply voltage range of 2.5 V to 3.5 V.
From: Allegro MicroSystems A3211/A3212 Hall-Effect Switch Datasheet
How does the A3211 differ from the A3212 regarding magnetic polarity?
The A3212 turns on with either a north or south pole, while the A3211 provides an inverted output.
From: Allegro MicroSystems A3211/A3212 Hall-Effect Switch Datasheet
Do the A3211 and A3212 support both North and South poles?
Yes, either a north or south pole of sufficient strength will turn the output on in the A3212, and the A3211 provides an inverted output.
From: Allegro MicroSystems A3211/A3212 Hall-Effect Switch Datasheet
What is the average operating power requirement?
The average operating power requirements are less than 15 µW with a 2.75 volt supply.
From: Allegro MicroSystems A3211/A3212 Hall-Effect Switch Datasheet
What supply voltage range do the A3211 and A3212 support?
They operate from 2.75 V up to 3.5 V.
From: Allegro A3211/A3212 Micropower Ultra-sensitive Hall-effect Switches Datasheet
How much current does the device draw when enabled?
Typical supply current is 2.0 mA when the chip is awake.
From: Allegro A3211/A3212 Micropower Ultra-sensitive Hall-effect Switches Datasheet