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A3213 Datasheet(PDF) 1 Page - Allegro MicroSystems |
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A3213 Datasheet(HTML) 1 Page - Allegro MicroSystems |
1 / 11 page Not to scale The A3213 and A3214 integrated circuits are ultra-sensitive, pole-independent Hall-effect switches with a latched digital output. They are especially suited for operation in battery- operated, hand-held equipment such as cell and cordless telephones and palmtop computers. A 2.4 to 5.5 V operation and a unique clocking scheme reduce the average operating power requirements: the A3213 to 825 µW, the A3214 to 14 µW (typical, at 2.75 V). Except for operating duty cycle and average operating current, the A3213 and A3214 are identical. Unlike other Hall-effect switches, either a north or south pole of sufficient strength will turn the output on; in the absence of a magnetic field, the output is off. The polarity independence and minimal power requirement allows these devices to easily replace reed switches for superior reliabil- ity and ease of manufacturing, while eliminating the require- ment for signal conditioning. Improved stability is made possible through chopper sta- bilization (dynamic offset cancellation), which reduces the residual offset voltage normally caused by device overmold- ing, temperature dependencies, and thermal stress. 27622.62-DS Rev. 27 • AEC-Q100 automotive qualified • Micropower operation • Operate with north or south pole • 2.4 to 5.5 V battery operation • Chopper stabilized □ Superior temperature stability □ Extremely low switchpoint drift □ Insensitive to physical stress • High ESD protection • Solid-state reliability • Small size • Easily assembly into applications due to magnetic pole independence Micropower Ultra-Sensitive Hall-Effect Switches Continued on the next page… Packages: Functional Block Diagram A3213 and A3214 3 pin surface mount SOT23-W (suffix LH) 3 lead ultramini SIP (suffix UA) TIMING LOGIC Dwg. FH-020-5 GROUND OUTPUT SUPPLY X SWITCH FEATURES AND BENEFITS DESCRIPTION |
Similar Part No. - A3213_16 |
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Similar Description - A3213_16 |
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