A1205 ALLEGRO [Allegro MicroSystems], A1205 Datasheet
A1205
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A1205 Summary of contents
Page 1
... The Allegro A1205 Hall-effect bipolar switch is a next- ® CC generation replacement and extension of the popular Allegro A3134 bipolar switch. The A1205 has identical specifications as the A1201 but is recommended for applications that require pulsing V to conserve power. For standard applications, CC where V is constant, please refer to the A1201 through CC A1204 devices ...
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... Selection Guide Part Number Packing* A1205ELHLT-T 7-in. reel, 3000 pieces/reel A1205EUA-T Bulk, 500 pieces/bag A1205LLHLT-T 7-in. reel, 3000 pieces/reel A1205LUA-T Bulk, 500 pieces/bag *Contact Allegro for additional packing options. Absolute Maximum Ratings Characteristic Supply Voltage Reverse Supply Voltage Output Off Voltage Reverse Output Voltage ...
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... A1205 OPERATING CHARACTERISTICS over full operating voltage and ambient temperature ranges, unless otherwise noted Characteristic Symbol Electrical Characteristics Supply Voltage 1 V Output Leakage Current I OUTOFF Output On Voltage V OUT(SAT) Power-On Time 2 Output Rise Time 3 Output Fall Time 3 I CCON Supply Current I CCOFF ...
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... A1205 THERMAL CHARACTERISTICS may require derating at maximum conditions, see application information Characteristic Package Thermal Resistance *Additional thermal information available on Allegro Web site. Continuous-Time Bipolar Switch Symbol Test Conditions* Package LH, 1-layer PCB with copper limited to solder pads Package LH, 2-layer PCB with 0.463 in. ...
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... A1205 Supply Current (On) versus Ambient Temperature 8.0 7.0 6.0 5.0 4.0 3.0 2.0 1.0 0 – (°C) A Supply Current (Off) versus Ambient Temperature 8.0 7.0 6.0 5.0 4.0 3.0 2.0 1.0 0 – (°C) A Output Voltage (On) versus Ambient Temperature LOAD 350 300 250 200 150 100 50 0 – (°C) A Continuous-Time Bipolar Switch Characteristic Data 8.0 7.0 6 ...
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... A1205 Operate Point versus Ambient Temperature -10 -20 -30 -40 - (°C) A Release Point versus Ambient Temperature -10 -20 -30 -40 -50 - (°C) A Hysteresis versus Ambient Temperature - (°C) A Continuous-Time Bipolar Switch ...
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... A1205 Bipolar Device Switching The devices of the A120X family provide highly sensitive switching for applications using magnetic fields of alternating polarities, such as ring magnets. There are three switching modes for bipolar devices, referred to as latch, unipolar switch, and negative switch. Mode is determined by the switchpoint charac- teristics of the individual device ...
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... A1205 the field is reduced beyond the B level, the device switches OP back to the low state. The typical output behavior of the A120x devices is latching. However, the A120x family is designed to attain a small hys- teresis, and thereby provide more sensitive switching. Although this means that true latching behavior cannot be guaranteed in all cases, proper switching can be ensured by use of both south and north magnetic fields ring magnet ...
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... A1205 continuous-time devices have the shorter power-on time, they are the clear choice for such applications. For more information on the chopper stabilization technique, refer to Technical Paper STP 97-10, Monolithic Magnetic Hall Sensor Using Dynamic Quadrature Offset Cancellation and Technical Paper STP 99-1, Chopper-Stabilized Amplifiers with a Track-and-Hold Signal Demodulator ...
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... A1205 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 sup- plied power or improving the heat dissipation properties of the application. This section presents a procedure for correlating factors affecting operating T ...
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... A1205 Preliminary dimensions, for reference only Dimensions in millimeters U.S. Customary dimensions (in.) in brackets, for reference only (reference JEDEC TO-236 AB, except case width and terminal tip-to-tip) Dimensions exclusive of mold flash, gate burrs, and dambar protrusions Exact case and lead configuration at supplier discretion within limits shown ...
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... A1205 .122 .117 The products described herein are manufactured under one or more of the following U.S. patents: 5,045,920; 5,264,783; 5,442,283; 5,389,889; 5,581,179; 5,517,112; 5,619,137; 5,621,319; 5,650,719; 5,686,894; 5,694,038; 5,729,130; 5,917,320; and other patents pending. Allegro MicroSystems, Inc. reserves the right to make, from time to time, such departures from the detail specifications as may be required to permit improvements in the performance, reliability, or manufacturability of its products ...