A1220 ALLEGRO [Allegro MicroSystems], A1220 Datasheet
A1220
Available stocks
Related parts for A1220
A1220 Summary of contents
Page 1
... VCC A1220-DS, Rev. 8 A1220, A1221, and A1222 Description The A1220, A1221, and A1222 Hall-effect sensor ICs are extremely temperature-stable and stress-resistant devices especially suited for operation over extended temperature ranges to 150°C. Superior high-temperature performance is made possible through dynamic offset cancellation, which reduces the residual offset voltage normally caused by device overmolding, temperature dependencies, and thermal stress ...
Page 2
... A1220, A1221 Chopper Stabilized Precision Hall Effect Latches and A1222 Selection Guide 1 Part Number Packing A1220ELHLX-T 13-in. reel, 10000 pieces/reel A1220ELHLT-T 2 7-in. reel, 3000 pieces/reel A1220EUA-T Bulk, 500 pieces/bag A1220LLHLX-T 13-in. reel, 10000 pieces/reel A1220LLHLT-T 2 7-in. reel, 3000 pieces/reel A1220LUA-T Bulk, 500 pieces/bag A1221ELHLX-T 13-in. reel, 10000 pieces/reel ...
Page 3
... A1220, A1221 Chopper Stabilized Precision Hall Effect Latches and A1222 ELECTRICAL CHARACTERISTICS Characteristics Electrical Characteristics Forward Supply Voltage Output Leakage Current Output Saturation Voltage Output Current Limit Power-On Time 3 Chopping Frequency Output Rise Time 3,4 Output Fall Time 3,4 Supply Current Reverse Supply Current ...
Page 4
... A1220, A1221 Chopper Stabilized Precision Hall Effect Latches and A1222 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 ...
Page 5
... A1220, A1221 Chopper Stabilized Precision Hall Effect Latches and A1222 A1220, A1221, and A1222 Electrical Characteristics Average Supply Current (On) versus Temperature 6.0 5.5 5.0 4.5 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0.0 -60 -40 - (°C) A Average Supply Current (Off) versus Temperature 6.0 5.5 5.0 4.5 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0.0 -60 -40 - 100 120 140 160 T (°C) ...
Page 6
... T (°C) A Switchpoint Hysteresis versus Temperature -60 -40 - (°C) A A1220 Magnetic Characteristics 40 35 (V) 30 3.0 3 100 120 140 160 0 -5 -10 (V) -15 3.0 3.8 -20 4.2 12 -25 24 -30 -35 -40 100 120 140 160 ...
Page 7
... A1220, A1221 Chopper Stabilized Precision Hall Effect Latches and A1222 Operate Point versus Temperature -60 -40 - (°C) A Release Point versus Temperature 0 -10 -20 -30 -40 -50 -60 -70 -80 -90 -60 -40 - (°C) A Switchpoint Hysteresis versus Temperature ...
Page 8
... A1220, A1221 Chopper Stabilized Precision Hall Effect Latches and A1222 Operate Point versus Temperature 150 140 130 120 110 100 -60 -40 - (°C) A Release Point versus Temperature -70 -80 -90 -100 -110 -120 -130 -140 -150 -60 -40 - ...
Page 9
... A1220, A1221 Chopper Stabilized Precision Hall Effect Latches and A1222 Operation The output of these devices switches low (turns on) when a mag- netic field perpendicular to the Hall element exceeds the operate point threshold, B (see panel A of figure 1). After turn-on, the OP output voltage The output transistor is capable of ...
Page 10
... A1220, A1221 Chopper Stabilized Precision Hall Effect Latches and A1222 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 ...
Page 11
... A1220, A1221 Chopper Stabilized Precision Hall Effect Latches and A1222 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 ...
Page 12
... A1220, A1221 Chopper Stabilized Precision Hall Effect Latches and A1222 +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 ...
Page 13
... A1220, A1221 Chopper Stabilized Precision Hall Effect Latches and A1222 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, Allegro MicroSystems, Inc. The products described herein are manufactured under one or more of the following U.S. patents: 5,517,112; 5,619,137; 5,621,319; 7,425,821 and/ or other patents pending. ...