A1121 ALLEGRO [Allegro MicroSystems], A1121 Datasheet
A1121
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A1121 Summary of contents
Page 1
... For the A1120 and A1121, a south pole of sufficient strength turns the output on. Removal of the magnetic field turns the output off. The A1125 is complementary, in that for these devices, a south pole turns the A1125 output off, and removal of the magnetic field turns the output on ...
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... A1120, A1121 Chopper Stabilized Precision Hall Effect Switches and A1125 Selection Guide 1 Part Number Packing A1120ELHLX-T 13-in. reel, 10000 pieces/reel 2 A1120ELHLT-T 7-in. reel, 3000 pieces/reel A1120EUA-T Bulk, 500 pieces/bag A1120LLHLX-T 13-in. reel, 10000 pieces/reel A1120LLHLT-T 2 7-in. reel, 3000 pieces/reel A1120LUA-T Bulk, 500 pieces/bag A1121ELHLX-T 13-in. reel, 10000 pieces/reel ...
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... A1120, A1121 Chopper Stabilized Precision Hall Effect Switches and A1125 Absolute Maximum Ratings Characteristic Forward Supply Voltage Reverse Supply Voltage Output Off Voltage Continuous Output Current Reverse Output Current Operating Ambient Temperature Maximum Junction Temperature Storage Temperature Package LH 1 Terminal List ...
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... A1120, A1121 Chopper Stabilized Precision Hall Effect Switches and A1125 ELECTRICAL CHARACTERISTICS Characteristics Electrical Characteristics Forward Supply Voltage Output Leakage Current Output Saturation Voltage Output Current Limit 3 Power-On Time Chopping Frequency 3,4 Output Rise Time 3,4 Output Fall Time Supply Current Reverse Supply Current ...
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... A1120, A1121 Chopper Stabilized Precision Hall Effect Switches and A1125 THERMAL CHARACTERISTICS may require derating at maximum conditions, see application information Characteristic Package Thermal Resistance Symbol Package LH, 1-layer PCB with copper limited to solder pads Package LH, 2-layer PCB with 0.463 in. R θJA side connected by thermal vias ...
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... T (°C) A Characteristic Performance A1120, A1121, and A1125 Electrical Characteristics Average Supply Current (On) versus Average Supply Voltage 6.0 5.5 5.0 4.5 4.0 V (V) CC 3.5 3.0 3.0 12 2.5 24 2.0 1.5 1.0 0.5 0 100 120 140 160 Average Supply Current (Off) versus Average Supply Voltage 6 ...
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... A1120, A1121 Chopper Stabilized Precision Hall Effect Switches and A1125 Average Operate Point versus Ambient Temperature -60 -40 - (°C) A Average Release Point versus Ambient Temperature -60 -40 - ...
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... T (°C) A Switchpoint Hysteresis versus Ambient Temperature (°C) A A1121 Magnetic Characteristics 140 130 120 110 V (V) CC 100 3 100 120 140 160 110 100 3.0 70 ...
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... Chopper Stabilized Precision Hall Effect Switches and A1125 Operation The output of the A1120 and A1121 devices switches low (turns on) when a magnetic field perpendicular to the Hall element exceeds the operate point threshold, B 1). When the magnetic field is reduced below the release point the device output goes high (turns off) ...
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... A1120, A1121 Chopper Stabilized Precision Hall Effect Switches and A1125 Chopper Stabilization Technique When using Hall effect technology, a limiting factor for switchpoint accuracy is the small signal voltage developed across the Hall element. This voltage is disproportionally small relative to the offset that can be produced at the output of the Hall ele- ment ...
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... A1120, A1121 Chopper Stabilized Precision Hall Effect Switches and A1125 Power Derating The device must be operated below the maximum junction temperature of the device Under certain combinations of J(max) peak conditions, reliable operation may require derating supplied power or improving the heat dissipation properties of the appli- cation ...
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... A1120, A1121 Chopper Stabilized Precision Hall Effect Switches and A1125 +0.12 2.98 –0.08 3 +0.10 2.90 –0. 10° REF 0.95 BSC For Reference Only; not for tooling use (reference dwg. 802840) Dimensions in millimeters Dimensions exclusive of mold flash, gate burrs, and dambar protrusions Exact case and lead configuration at supplier discretion within limits shown Active Area Depth, 0 ...
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... A1120, A1121 Chopper Stabilized Precision Hall Effect Switches and A1125 4.09 45° +0.08 3.02 –0.05 2.16 MAX 0.51 REF 1 15.75 ±0.51 +0.05 0.43 –0.07 Copyright ©2009-2010, Allegro MicroSystems, Inc. Allegro MicroSystems, Inc. reserves the right to make, from time to time, such de par tures from the detail spec tions as may be required to per- mit improvements in the per for mance, reliability, or manufacturability of its products ...