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Supply Voltage, VDD ................................... 6 V Magnetic Flux Density, B ................... Unlimited Output Off Voltage, VOUT ........................... 6 V Output Current, IOUT .............................. 1 mA Junction Temperature, TJ .................. +170°C Operating Temperature Range, TA Suffix 'E' ......................... -40°C to +85°C Suffix 'L' ................... ....-40°C to +150°C Storage Temperature Range, TS .............................. .-65°C to +170°C
3213 Features
Micropower Operation Operate With North or South Pole 2.4 V to 5.5 V Battery Operation Chopper Stabilized Superior Temperature Stability Extremely Low Switch-Point Drift Insensitive to Physical Stress ESD Protected to 5 kV Sol id-State Reliability Small Size Easily Manufacturable With Magnet Pole Independence
3213 Typical Application
Allegro's pole-independent sensing technique allows for operation with either a north pole or south pole magnet orientation, enhancing the manufacturability of the device. The state-of-the-art technology provides the same output polarity for either pole face.
It is strongly recommended that an external bypass capacitor be connected (in close proximity to the Hall sensor) between the supply and ground of the device to reduce both external noise and noise generated by the chopper-stabilization technique. This is especially true due to the relatively high impedance of battery supplies.
The simplest form of magnet that will operate these devices is a bar magnet with either pole near the branded surface of the device. Many other methods of operation are possible. Extensive applications information on magnets and Hall-effect sensors is also available in the Allegro Electronic Data Book AMS-702 or Application Note 27701, or at www.allegromicro.com.