A1146EUA Allegro Microsystems Inc, A1146EUA Datasheet
A1146EUA
Specifications of A1146EUA
Related parts for A1146EUA
A1146EUA Summary of contents
Page 1
Ultrasensitive Two-Wire Chopper-Stabilized Features and Benefits ▪ Chopper stabilization ▫ Low switchpoint drift over operating temperature range ▫ Low sensitivity to stress ▪ Factory programmed at end-of-line for optimized switchpoints ▪ On-chip protection ▫ Supply transient protection ▫ Reverse-battery protection ...
Page 2
... Samples are no longer available. Status change: October 31, 2006. Deadlilne for receipt of LAST TIME BUY ORDERS: April 27, 2007. These variants include: A1145ELHLT, A1145EUA, A1145LLHLT, A1145LUA, A1146ELHLT, A1146EUA, A1146LLHLT, and A1146LUA. 2 Contact Allegro for additional packing options. ...
Page 3
A1145 and A1146 ELECTRICAL CHARACTERISTICS Characteristic Symbol Supply Voltage 1 2 Supply Current Reverse Supply Current Supply Zener Clamp Voltage V ZSUPPLY 3 Supply Zener Clamp Current I ZSUPPLY Output Slew Rate 4 Chopping Frequency Power-On Time 5 6,7 Power-On ...
Page 4
A1145 and A1146 Supply Current (Low) versus Ambient Temperature at Various Levels of V (A1145 and A1146 – 100 Ambient Temperature, T Operate Point versus Ambient Temperature at Various Levels of V ...
Page 5
A1145 and A1146 THERMAL CHARACTERISTICS may require derating at maximum conditions, see application information Characteristic Package Thermal Resistance *Additional thermal information available on Allegro Web site. Ultrasensitive Two-Wire Chopper-Stabilized Unipolar Hall Effect Switches Symbol Test Conditions* Package LH, 1-layer PCB ...
Page 6
A1145 and A1146 Operation The output the A1145 device switches low after the mag- CC netic field at the Hall sensor exceeds the operate point threshold When the magnetic field is reduced to below the ...
Page 7
A1145 and A1146 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 ...
Page 8
A1145 and A1146 Typical Application Circuit The A114x family of devices must be protected by an external bypass capacitor connected between the supply, VCC, BYP and the ground, GND, of the device. C noise and the noise generated ...
Page 9
A1145 and A1146 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 ...
Page 10
A1145 and A1146 EMC (Electromagnetic Compatibility) Requirements Package LH, 3-pin SOT VCC connection 3. GND Ultrasensitive Two-Wire Chopper-Stabilized Unipolar Hall Effect Switches Device Qualification Program Contact Allegro for information. Contact your local representative ...
Page 11
A1145 and A1146 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 ...
Page 12
A1145 and A1146 .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. ...