A1386LLHLX-T

A1386LLHLX-T Datasheet

A1386

Part	Datasheet
A1386LLHLX-T	A1386LLHLX-T (pdf)

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A1386 5 V Field-Programmable Linear Hall Effect Sensor IC with 3 V Supply Functionality, Analog Output, and Miniature Package Options Discontinued Product These parts are no longer in production The device should not be purchased for new design applications. Samples are no longer available. Date of status change December 1, 2015 Recommended Substitutions: For existing customer transition, and for new customers or new applications, refer to the A1389. NOTE For detailed information on purchasing options, contact your local Allegro field applications engineer or sales representative. A1386 5 V Field-Programmable Linear Hall Effect Sensor IC with 3 V Supply Functionality, Analog Output, and Miniature Package Options • Low power consumption using 3 V supply • Factory programmed sensitivity temperature coefficient 0.13%/°C nominal • Programmability at end-of-line • Ratiometric sensitivity, quiescent voltage output, and clamps for interfacing with application DAC • Temperature-stable quiescent voltage output and sensitivity • Precise recoverability after temperature cycling • Output voltage clamps provide short circuit diagnostic capabilities • Wide ambient temperature range to 150°C • Resistant to mechanical stress • Miniature package options Packages 3-pin SOT23-W 2 mm x 3 mm x 1 mm suffix LH 3-pin ultramini SIP mm x 4 mm x 3 mm suffix UA Not to scale The Allegro A1386 programmable, linear, Hall effect sensor IC is designed for low power, high accuracy, and small package size applications. The accuracy of this device is enhanced via programmability on the output pin for end-of-line optimization without the added complexity and cost of a fully programmable device. The A1386 has two operating modes, normal and low power. In normal operation mode the A1386 operates much like its predecessors, theA1381,A1382,A1383, andA1384, as a highly accurate, user-programmable linear sensor IC with a ratiometric output. In low power mode, the device actually disengages some internal components in order to reduce power consumption. Although the accuracy of the device is substantially reduced during low power operation, it remains effective as a detector of magnetic regions such as north and south poles on a rotating ring magnet . This unique feature allows the device to be used in systems that are put to sleep, during which time there may be only 3 V available, or in applications that have start-up conditions where the available supply voltage may drop below V for a period of time. This ratiometric Hall effect device provides a voltage output that is proportional to the applied magnetic field over the entire Approximate footprint Continued on the next Functional Block Diagram V+ VCC Chip Reference Currents To all subcircuits Dynamic Offset Cancellation Filter VOUT Hall Drive Circuit Gain Gain Temperature Coefficient Offset Trim Control A1386 5 V Field-Programmable Linear Hall Effect Sensor IC with 3 V Supply Functionality Analog Output, and Miniature Package Options Description continued to V supply operating region. Both the quiescent voltage output and magnetic sensitivity are user adjustable. The quiescent voltage output can be set to approximately 50% of the supply voltage, and the sensitivity adjusted between for VCC = 5 V. The sensitivity temperature coefficient is programmed at the factory, at 0.13%/°C nominal, to compensate for Neodymium-style magnets. The features of this linear device make it ideal for the high accuracy requirements of automotive and industrial applications. Performance is guaranteed over an extended temperature range, to 150°C. Each device contains a BiCMOS monolithic circuit that integrates a Hall element, temperature-compensating circuitry to reduce the intrinsic sensitivity drift of the Hall element, a small-signal high-gain amplifier, a clamped low-impedance output stage, and a proprietary dynamic offset cancellation technique. The A1386 device is provided in a 3-pin ultramini single-in-line package UA suffix , and a 3-pin surface mount SOT-23W package LH suffix . Both packages are lead Pb free, with 100% matte tin leadframe plating. Selection Guide

PDF Datasheet Preview

A1386
5 V Field-Programmable Linear Hall Effect Sensor IC with 3 V Supply Functionality, Analog Output, and Miniature Package Options

Discontinued Product

These parts are no longer in production The device should not be purchased for new design applications. Samples are no longer available.

Date of status change December 1, 2015

Recommended Substitutions:

For existing customer transition, and for new customers or new applications, refer to the A1389.

NOTE For detailed information on purchasing options, contact your local Allegro field applications engineer or sales representative.

A1386
5 V Field-Programmable Linear Hall Effect Sensor IC with 3 V Supply Functionality, Analog Output, and Miniature Package Options
• Low power consumption using 3 V supply
• Factory programmed sensitivity temperature coefficient
0.13%/°C nominal
• Programmability at end-of-line
• Ratiometric sensitivity, quiescent voltage output, and
clamps for interfacing with application DAC
• Temperature-stable quiescent voltage output and sensitivity
• Precise recoverability after temperature cycling
• Output voltage clamps provide short circuit diagnostic
capabilities
• Wide ambient temperature range to 150°C
• Resistant to mechanical stress
• Miniature package options

Packages
3-pin SOT23-W 2 mm x 3 mm x 1 mm suffix LH
3-pin ultramini SIP mm x 4 mm x 3 mm suffix UA

Not to scale

The Allegro A1386 programmable, linear, Hall effect sensor IC is designed for low power, high accuracy, and small package size applications. The accuracy of this device is enhanced via programmability on the output pin for end-of-line optimization without the added complexity and cost of a fully programmable device.

The A1386 has two operating modes, normal and low power. In normal operation mode the A1386 operates much like its predecessors, theA1381,A1382,A1383, andA1384, as a highly accurate, user-programmable linear sensor IC with a ratiometric output. In low power mode, the device actually disengages some internal components in order to reduce power consumption. Although the accuracy of the device is substantially reduced during low power operation, it remains effective as a detector of magnetic regions such as north and south poles on a rotating ring magnet . This unique feature allows the device to be used in systems that are put to sleep, during which time there may be only 3 V available, or in applications that have start-up conditions where the available supply voltage may drop below V for a period of time.

This ratiometric Hall effect device provides a voltage output that is proportional to the applied magnetic field over the entire

Approximate footprint

Continued on the next

Functional Block Diagram

V+ VCC

Chip Reference Currents

To all subcircuits

Dynamic Offset Cancellation Filter

VOUT

Hall Drive Circuit

Gain

Gain Temperature Coefficient

Offset

Trim Control

A1386
5 V Field-Programmable Linear Hall Effect Sensor IC with 3 V Supply Functionality Analog Output, and Miniature Package Options

Description continued
to V supply operating region. Both the quiescent voltage output and magnetic sensitivity are user adjustable. The quiescent voltage output can be set to approximately 50% of the supply voltage, and the sensitivity adjusted between for VCC = 5 V. The sensitivity temperature coefficient is programmed at the factory, at 0.13%/°C nominal, to compensate for Neodymium-style magnets. The features of this linear device make it ideal for the high accuracy requirements of automotive and industrial applications. Performance is guaranteed over an extended temperature range, to 150°C.

Each device contains a BiCMOS monolithic circuit that integrates a Hall element, temperature-compensating circuitry to reduce the intrinsic sensitivity drift of the Hall element, a small-signal high-gain amplifier, a clamped low-impedance output stage, and a proprietary dynamic offset cancellation technique.

The A1386 device is provided in a 3-pin ultramini single-in-line package UA suffix , and a 3-pin surface mount SOT-23W package LH suffix . Both packages are lead Pb free, with 100% matte tin leadframe plating.

Selection Guide

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Datasheet ID: A1386LLHLX-T 516008