A1220, A1221, A1222, and A1223 Chopper-Stabilized Precision Hall-Effect Latches FEATURES AND BENEFITS DESCRIPTION AEC-Q100 automotive qualified The A1220, A1221, A1222, and A1223 Hall-effect sensor ICs Symmetrical latch switchpoints are extremely temperature-stable and stress-resistant devices Resistant to physical stress especially suited for operation over extended temperature ranges Superior temperature stability to 150C. Superior high-temperature performance is made Output short-circuit protection possible through dynamic offset cancellation, which reduces the Operation from unregulated supply down to 3 V residual offset voltage normally caused by device overmolding, Reverse-battery protection temperature dependencies, and thermal stress. Each device Solid-state reliability includes on a single silicon chip a voltage regulator, Hall- Small package sizes voltage generator, small-signal amplifier, chopper stabilization, Schmitt trigger, and a short-circuit protected open-drain output to sink up to 25 mA. A south pole of sufficient strength turns PACKAGES: the output on. A north pole of sufficient strength is necessary Not to scale 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 NOT FOR external resistance in series with the supply pin for greater NEW DESIGN protection against high voltage transient events. Two package styles provide magnetically optimized packages for most applications. Package type LH is a modified 3-pin 3-pin SOT23W SOT23W surface-mount package, while UA is a three-pin (suffix LH) ultra-mini SIP for through-hole mounting. Both packages are 3-pin SIP, 3-pin SIP, lead (Pb) free, with 100% matte-tin-plated leadframes. matrix HD style chopper style (suffix UA) (suffix UA) FUNCTIONAL BLOCK DIAGRAM VCC Regulator To All Subcircuits VOUT Low-Pass Filter Amp Control Current Limit GND A1220-DS, Rev. 18 October 20, 2016 Dynamic Offset Cancellation Sample and HoldA1220, A1221, Chopper-Stabilized Precision Hall-Effect Latches A1222, and A1223 SELECTION GUIDE 1 Part Number Packing Mounting Ambient, T B (Min) B (Max) A RP OP A1220ELHLX-T 13-in. reel, 10000 pieces/reel 3-pin SOT23W surface mount 2 A1220ELHLT-T 7-in. reel, 3000 pieces/reel 3-pin SOT23W surface mount 40C to 85C 3 A1220EUA-T Bulk, 500 pieces/bag 3-pin SIP through hole 40 G 40 G A1220LLHLX-T 13-in. reel, 10000 pieces/reel 3-pin SOT23W surface mount 2 A1220LLHLT-T 7-in. reel, 3000 pieces/reel 3-pin SOT23W surface mount 40C to 150C 3 A1220LUA-T Bulk, 500 pieces/bag 3-pin SIP through hole A1221ELHLX-T 13-in. reel, 10000 pieces/reel 3-pin SOT23W surface mount 2 A1221ELHLT-T 7-in. reel, 3000 pieces/reel 3-pin SOT23W surface mount 40C to 85C 3 A1221EUA-T Bulk, 500 pieces/bag 3-pin SIP through hole 90 G 90 G A1221LLHLX-T 13-in. reel, 10000 pieces/reel 3-pin SOT23W surface mount 2 A1221LLHLT-T 7-in. reel, 3000 pieces/reel 3-pin SOT23W surface mount 40C to 150C 3 A1221LUA-T Bulk, 500 pieces/bag 3-pin SIP through hole A1222ELHLT-T 7-in. reel, 3000 pieces/reel 3-pin SOT23W surface mount 2 A1222ELHLX-T 13-in. reel, 10000 pieces/reel 3-pin SOT23W surface mount 40C to 85C A1222EUA-T Bulk, 500 pieces/bag 3-pin SIP through hole 150 G 150 G A1222LLHLT-T 7-in. reel, 3000 pieces/reel 3-pin SOT23W surface mount 2 A1222LLHLX-T 13-in. reel, 10000 pieces/reel 3-pin SOT23W surface mount 40C to 150C A1222LUA-T Bulk, 500 pieces/bag 3-pin SIP through hole A1223ELHLT-T 7-in. reel, 3000 pieces/reel 3-pin SOT23W surface mount 2 A1223ELHLX-T 13-in. reel, 10000 pieces/reel 3-pin SOT23W surface mount 40C to 85C A1223EUA-T Bulk, 500 pieces/bag 3-pin SIP through hole 180 G 180 G A1223LLHLT-T 7-in. reel, 3000 pieces/reel 3-pin SOT23W surface mount 2 A1223LLHLX-T 13-in. reel, 10000 pieces/reel 3-pin SOT23W surface mount 40C to 150C A1223LUA-T Bulk, 500 pieces/bag 3-pin SIP through hole 1 Contact Allegro for additional packing options. 2 Available through authorized Allegro distributors only. 3 The chopper-style UA package is not for new design the matrix HD style UA package is recommended for new designs. Allegro MicroSystems, LLC 2 115 Northeast Cutoff Worcester, Massachusetts 01615-0036 U.S.A. 1.508.853.5000 www.allegromicro.com