A1183ELHLT Allegro Microsystems Inc, A1183ELHLT Datasheet

A1183ELHLT

Manufacturer Part Number

A1183ELHLT

Description

IC SWITCH HALL EFFECT UNI SOT-23

Manufacturer

Allegro Microsystems Inc

Type

Unipolar Switchr

Datasheets

1.A1180EUA.pdf (16 pages)

2.A1183ELHLT.pdf (15 pages)

Specifications of A1183ELHLT

Sensing Range

60G ~ 200G Trip - Programmable, Fixed Release

Voltage - Supply

3.5 V ~ 24 V

Current - Supply

6.9mA

Output Type

Digital, Open Collector

Features

Programmable

Operating Temperature

-40°C ~ 85°C

Package / Case

SOT-23W

Magnetic Type

Unipolar

Operating Supply Voltage (min)

3.5V

Operating Supply Voltage (typ)

5/9/12/15/18V

Operating Supply Voltage (max)

24V

Mag Sensor Operate Point (g)

200Gs

Mag Sensor Hysteresis(g)

15Gs

Package Type

SOT-23W

Pin Count

Mounting

Surface Mount

Operating Temp Range

-40C to 85C

Operating Temperature Classification

Industrial

Lead Free Status / RoHS Status

Contains lead / RoHS non-compliant

Current - Output (max)

Lead Free Status / RoHS Status

Not Compliant, Contains lead / RoHS non-compliant

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Features and Benefits

▪ Chopper stabilization

▪ Field programmable for optimized switchpoints

▪ On-chip protection

Packages: 3 pin SOT23W (suffix LH), and

3 pin SIP (suffix UA)

Not to scale

A1180-DS, Rev. 11

▫ Low switchpoint drift over operating

▫ Low sensitivity to stress

▫ Supply transient protection

▫ Reverse-battery protection

▫ On-board voltage regulator

▫ 3.5 to 24 V operation

Sensitive Two-Wire Field-Programmable Chopper-Stabilized

temperature range

V+

0.01 uF

VCC

Functional Block Diagram

Clock/Logic

Amp

Program/Lock

Programming

Logic

Unipolar Hall-Effect Switches

Description

The A1180, A1181, A1182, and A1183 devices are sensitive,

two-wire, unipolar, Hall effect switches. The operate point, B

can be field-programmed, after final packaging of the device

and placement into the application. This advanced feature

allows the optimization of the device switching performance,

by effectively accounting for variations caused by mounting

tolerances for the device and the target magnet.

This family of devices are produced on the Allegro

MicroSystems advanced BiCMOS wafer fabrication process,

which implements a patented, high-frequency, chopper-

stabilization technique that achieves magnetic stability and

eliminates the offsets that are inherent in single-element devices

exposed to harsh application environments. Commonly found

in a number of automotive applications, the A1180-83 family

of devices are utilized in sensing: seat track position, seat

belt buckle presence, hood/trunk latching, and shift selector

position.

Two-wire unipolar switches are particularly advantageous

in price-sensitive applications, because they require one less

Continued on the next page…

A1180, A1181, A1182, and A1183

Low-Pass

Filter

Offset

Package UA Only

Regulator

GND

Related parts for A1183ELHLT

A1183ELHLT Summary of contents

Page 1

Sensitive Two-Wire Field-Programmable Chopper-Stabilized Features and Benefits ▪ Chopper stabilization ▫ Low switchpoint drift over operating temperature range ▫ Low sensitivity to stress ▪ Field programmable for optimized switchpoints ▪ On-chip protection ▫ Supply transient protection ▫ Reverse-battery protection ▫ ...

Page 2

... A1182ELHLT-T 7-in. reel, 3000 pieces/reel A1182EUA-T Bulk, 500 pieces/bag A1182LLHLT-T 7-in. reel, 3000 pieces/reel A1182LUA-T Bulk, 500 pieces/bag A1183ELHLT-T 7-in. reel, 3000 pieces/reel A1183EUA-T Bulk, 500 pieces/bag A1183LLHLT-T 7-in. reel, 3000 pieces/reel A1183LUA-T Bulk, 500 pieces/bag 1 Contact Allegro for additional packing options. ...

Page 3

A1180, A1181, A1182, A1183 and Chopper-Stabilized Unipolar Hall Effect Switches ELECTRICAL CHARACTERISTICS Characteristic Symbol 1 Supply Voltage Supply Current 2 Supply Zener Clamp Voltage V Supply Zener Clamp Current I Z(supply) Reverse Supply Current Output Slew Rate 3 Chopping Frequency ...

Page 4

A1180, A1181, A1182, A1183 and Chopper-Stabilized Unipolar Hall Effect Switches I versus Ambient Temperature CC(L) at Various Levels of V (A1180, A1181 - 100 Ambient Temperature, T Average B Bits versus Ambient ...

Page 5

A1180, A1181, A1182, A1183 and Chopper-Stabilized Unipolar Hall Effect Switches EMC (Electromagnetic Compatibility) Requirements Sensitive Two-Wire Field-Programmable Device Qualiﬁ cation Program Contact Allegro for information. Contact your local representative for EMC results. Test Name Reference Speciﬁ cation ESD – Human ...

Page 6

A1180, A1181, A1182, A1183 and Chopper-Stabilized Unipolar Hall Effect Switches 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 Field-Programmable Symbol Test Conditions* Package ...

Page 7

A1180, A1181, A1182, A1183 and Chopper-Stabilized Unipolar Hall Effect Switches Operation The output the A1180 and A1182 devices switch low CC after the magnetic ﬁ eld at the Hall element exceeds the oper- ate point threshold, B ...

Page 8

A1180, A1181, A1182, A1183 and Chopper-Stabilized Unipolar Hall Effect Switches Chopper Stabilization Technique A limiting factor for switchpoint accuracy when using Hall effect technology is the small signal voltage developed across the Hall element. This voltage is proportionally small relative ...

Page 9

A1180, A1181, A1182, A1183 and Chopper-Stabilized Unipolar Hall Effect Switches For additional general application information, visit the Allegro MicroSystems Web site at www. allegromicro.com. Typical Application Circuit The A118x family of devices must be protected by an external bypass capacitor, ...

Page 10

A1180, A1181, A1182, A1183 and Chopper-Stabilized Unipolar Hall Effect Switches 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- ...

Page 11

A1180, A1181, A1182, A1183 and Chopper-Stabilized Unipolar Hall Effect Switches Programming Protocol The operate switchpoint can be ﬁ eld-programmed so, a coded series of voltage pulses through the VCC pin is used to set bitﬁ ...

Page 12

A1180, A1181, A1182, A1183 and Chopper-Stabilized Unipolar Hall Effect Switches The pulse sequences consist of the following groups of pulses enable sequence bitﬁ eld address sequence. 3. When permanently setting the bitﬁ eld, a long V ...

Page 13

A1180, A1181, A1182, A1183 and Chopper-Stabilized Unipolar Hall Effect Switches The ﬁ rst segment of code is a Enabling Addressing Mode. keying sequence used to enable the bitﬁ eld addressing mode. As shown in ﬁ gure 7, this segment consists ...

Page 14

A1180, A1181, A1182, A1183 and Chopper-Stabilized Unipolar Hall Effect Switches +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 ...

Page 15

A1180, A1181, A1182, A1183 and Chopper-Stabilized Unipolar Hall Effect Switches 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 ©2004-2009, Allegro MicroSystems, Inc. The products described herein are manufactured under one or more of ...

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