A1140LUA Allegro Microsystems Inc, A1140LUA Datasheet
A1140LUA
Specifications of A1140LUA
Related parts for A1140LUA
A1140LUA Summary of contents
Page 1
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 ▫ On-board voltage ...
Page 2
A1140, A1142, and A1143 Description (continued) transient protection and a Zener clamp to protect against overvoltage conditions on the supply line. The output currents of the A1143 switch HIGH in the presence of a south (+) polarity magnetic field of ...
Page 3
A1140, A1142, and A1143 1 Part Number Packing A1140ELHLT-T 3,4 Tape and Reel, 3000 pieces/reel A1142ELHLT-T 5 Tape and Reel, 3000 pieces/reel A1142LUA-T 5 Bulk Bag, 500 pieces/bag A1143ELHLT-T 5 Tape and Reel, 3000 pieces/reel 5 A1143EUA-T Bulk Bag, 500 ...
Page 4
A1140, A1142, and A1143 ELECTRICAL CHARACTERISTICS Characteristic Symbol Supply Voltage CC(L) Supply Current 2 I CC(H) Reverse Supply Current I RCC Supply Zener Clamp Voltage V ZSUPPLY Supply Zener Clamp Current I ZSUPPLY Output Slew Rate ...
Page 5
A1140, A1142, and A1143 Supply Current (Low) versus Ambient Temperature at Various Levels of V (A1140 – 100 Ambient Temperature Operate Point versus Ambient Temperature at Various Levels of V ...
Page 6
A1140, A1142, and A1143 THERMAL CHARACTERISTICS may require derating at maximum conditions, see application information Characteristic Package Thermal Resistance *Additional thermal information available on Allegro Web site. Sensitive Two-Wire Chopper-Stabilized Unipolar Hall Effect Switches Symbol Test Conditions* Package LH, 1-layer ...
Page 7
A1140, A1142, and A1143 Operation The output the A1140 and A1142 devices switch low CC after the magnetic field at the Hall element exceeds the oper- ate point threshold When the magnetic field is reduced ...
Page 8
A1140, A1142, and A1143 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 ...
Page 9
A1140, A1142, and A1143 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 ...
Page 10
A1140, A1142, and A1143 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 ...
Page 11
A1140, A1142, and A1143 EMC (Electromagnetic Compatibility) Requirements Sensitive Two-Wire Chopper-Stabilized Unipolar Hall Effect Switches Device Qualification Program Contact Allegro for information. Contact your local representative for EMC results. Test Name Reference Specification ESD – Human Body Model AEC-Q100-002 ESD ...
Page 12
A1140, A1142, and A1143 +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 ...
Page 13
A1140, A1142, and A1143 45° +0.08 3.02 –0.05 2.16 MAX 0.51 REF 1 15.75 ±0.51 +0.05 0.43 –0.07 Sensitive Two-Wire Chopper-Stabilized Unipolar Hall Effect Switches Package UA, 3-Pin SIP +0.08 4.09 –0. 2.04 1.52 ±0.05 1.44 E ...
Page 14
A1140, A1142, and A1143 Revision History Revision Rev. 17 Copyright ©2004-2010, 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 ...