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A1220 Datasheet(PDF) 1 Page - Allegro MicroSystems |
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A1220 Datasheet(HTML) 1 Page - Allegro MicroSystems |
1 / 16 page Description TheA1220, A1221,A1222, andA1223 Hall-effect sensor ICs are extremely temperature-stable and stress-resistant devices especiallysuitedforoperationoverextendedtemperatureranges to 150°C. Superior high-temperature performance is made possiblethroughdynamicoffsetcancellation,whichreducesthe residualoffsetvoltagenormallycausedbydeviceovermolding, temperature dependencies, and thermal stress. Each device includes on a single silicon chip a voltage regulator, Hall- voltagegenerator,small-signalamplifier,chopperstabilization, Schmitt trigger, and a short-circuit protected open-drain output to sink up to 25 mA. A south pole of sufficient strength turns the output on. A north pole of sufficient strength is necessary to turn the output off. An onboard regulator permits operation with supply voltages of 3 to 24 V. The advantage of operating down to 3 V is that the device can be used in 3 V applications or with additional external resistance in series with the supply pin for greater protection against high voltage transient events. Two package styles provide magnetically optimized packages for most applications. Package type LH is a modified 3-pin SOT23W surface-mount package, while UA is a three-pin ultra-mini SIP for through-hole mounting. Both packages are lead (Pb) free, with 100% matte-tin-plated leadframes. A1220-DS, Rev. 16 Features and Benefits ▪ AEC-Q100automotivequalified ▪ Symmetricallatchswitchpoints ▪ Resistanttophysicalstress ▪ Superiortemperaturestability ▪ Outputshort-circuitprotection ▪ Operationfromunregulatedsupplydownto3V ▪ Reverse-batteryprotection ▪ Solid-statereliability ▪ Smallpackagesizes Chopper-Stabilized Precision Hall-Effect Latches Packages: Functional Block Diagram Not to scale A1220, A1221, A1222, and A1223 3-pin SOT23W (suffix LH) (A1222 and A1223) (A1220 and 1221) 3-pin SIP (suffix UA) Regulator GND VCC VOUT Control Current Limit To All Subcircuits Amp Low-Pass Filter |
Similar Part No. - A1220_16 |
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Similar Description - A1220_16 |
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