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A3282EUA-T Datasheet(PDF) 1 Page - Allegro MicroSystems |
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A3282EUA-T Datasheet(HTML) 1 Page - Allegro MicroSystems |
1 / 11 page A3282 A3282-DS Worcester, Massachusetts 01615-0036 (508) 853-5000 115 Northeast Cutoff, Box 15036 www.allegromicro.com Allegro MicroSystems, Inc. ABSOLUTE MAXIMUM RATINGS Supply Voltage, VCC ..........................................28 V Reverse-Supply Voltage, VRCC ........................–18 V Output Off Voltage, VOUT...............................26.5 V Output Current, IOUTSINK........... Internally Limited Reverse-Output Current, IROUT ....................–10 mA Magnetic Flux Density, B .........................Unlimited Operating Temperature Ambient, TA, Range E..................–40ºC to 85ºC Ambient, TA, Range L................–40ºC to 150ºC Maximum Junction, TJ(MAX)......................165ºC Storage Temperature, TS ..................–65ºC to 170ºC Chopper-Stabilized Hall Effect Latch Package LH, 3-pin Surface Mount Features and Benefits Package UA, 3-pin SIP Chopper stabilization Superior temperature stability Extremely low switchpoint drift Insensitive to physical stress Reverse battery protection Output short circuit protection Solid state reliability Small size Robust EMC capability High ESD ratings (HBM) The A3282 Hall-effect sensor is a temperature stable, stress-resistant latch. Supe- rior high-temperature performance is made possible through an Allegro® pat- ented dynamic offset cancellation that utilizes chopper-stabilization. This method reduces the offset voltage normally caused by device overmolding, temperature dependencies, and thermal stress. The A3282 complements the current Allegro family of chopper-stabilized latching sensors. The A3282 includes the following on a single silicon chip: voltage regulator, Hall- voltage generator, small-signal amplifier, chopper stabilization, Schmitt trigger, and a short circuit protected open-drain output. Advanced BiCMOS wafer fabrica- tion processing is used to take advantage of low-voltage requirements, component matching, very low input-offset errors, and small component geometries. This device requires the presence of both south and north polarity magnetic fields for operation. In the presence of a south polarity field of sufficient strength, the device output latches on, and only switches off when a north polarity field of suf- ficient strength is present. The A3282 is rated for operation between the ambient temperatures –40°C and 85°C for the E temperature range, and –40°C to 150°C for the L temperature range. The two package styles available provide magnetically optimized solutions for most applications. Package LH is an SOT23W, a miniature low-profile sur- face-mount package, while package UA is a three-lead ultramini SIP for through- hole mounting. Each package is available in a lead (Pb) free version, with 100% matte tin plated leadframes. 1 3 2 1 2 3 1 2 3 1 2 3 |
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