A3281LLTTR

A3281LLTTR Datasheet

A3280, A3281, and A3283 Chopper-Stabilized, Precision Hall-Effect Latches

Part	Datasheet
A3281LLTTR	A3281LLTTR (pdf)

Related Parts	Information
A3280ELHLT-T	A3280ELHLT-T
A3280ELT-T	A3280ELT-T
A3281ELT-T	A3281ELT-T
A3280ELHLT	A3280ELHLT
A3280LLT	A3280LLT
A3280ELTTR	A3280ELTTR
A3280ELTTR-T	A3280ELTTR-T
A3280EUA	A3280EUA
A3280EUA-T	A3280EUA-T
A3280LLHLT	A3280LLHLT
A3283ELT-T	A3283ELT-T
A3283LLT-T	A3283LLT-T
A3283LLT	A3283LLT
A3283LLHLT-T	A3283LLHLT-T
A3283LLHLT	A3283LLHLT
A3283EUA-T	A3283EUA-T
A3283EUA	A3283EUA
A3281ELHLT-T	A3281ELHLT-T
A3283ELTTR	A3283ELTTR
A3283LUA	A3283LUA
A3281LLT-T	A3281LLT-T
A3281LLTTR-T	A3281LLTTR-T
A3281LUA	A3281LUA
A3283ELHLT	A3283ELHLT
A3283ELHLT-T	A3283ELHLT-T
A3283ELTTR-T	A3283ELTTR-T
A3281LLHLT	A3281LLHLT
A3280LLTTR-T	A3280LLTTR-T
A3281ELHLT	A3281ELHLT
A3281ELT	A3281ELT
A3283ELT	A3283ELT
A3281ELTTR	A3281ELTTR
A3281ELTTR-T	A3281ELTTR-T
A3283LLTTR	A3283LLTTR
A3281EUA-T	A3281EUA-T
A3283LLTTR-T	A3283LLTTR-T
A3281LLHLT-T	A3281LLHLT-T
A3280LLHLT-T	A3280LLHLT-T
A3281LUA-T	A3281LUA-T
A3280LLTTR	A3280LLTTR
A3280LUA-T	A3280LUA-T
A3283LUA-T	A3283LUA-T
A3280LLT-T	A3280LLT-T
A3281EUA	A3281EUA
A3280LUA	A3280LUA

PDF Datasheet Preview
A3280, A3281, and A3283 Chopper-Stabilized, Precision Hall-Effect Latches Last Time Buy The A3283 part is in production but has been determined to be LAST TIME BUY. This classification indicates that the product is obsolete and notice has been given. Sale of this device is currently restricted to existing customer applications. The device should not be purchased for new design applications because of obsolescence in the near future. Samples are no longer available. Date of status change August 16, 2010 Deadline for receipt of LAST TIME BUY orders October 29, 2010 Recommended Substitutions: For existing customer transition, and for new customers or new applications, refer to the A1223. Note The A3280 and A3281 are obsolete. For existing customer transition, and for new customers or new applications, refer to the A1222. NOTE For detailed information on purchasing options, contact your local Allegro field applications engineer or sales representative. A3280, A3281, and A3283 Chopper-Stabilized, Precision Hall-Effect Latches Packages: Package LH Package LT Not to scale Package UA Description The A3280, A3281, and A3283 Hall-effect latches are extremely temperature-stable and stress-resistant sensor ICs 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. The three devices are identical except for magnetic switch points. Each device includes on a single silicon chip a voltage regulator, Hall-voltage generator, small-signal amplifier, chopper stabilization, Schmitt trigger, and a short-circuit protected open-collector output to sink up to 25 mA. A south pole of sufficient strength will turn the output on. A north pole is necessary to turn the output off. An on-board regulator permits operation with supply voltages of to 24 volts. Three package styles provide a magnetically optimized package for most applications. Package type LH is a modified SOT23W surface-mount package, LT is a miniature SOT89/TO-243AA transistor package for surface-mount applications while UA is a three-lead ultra-mini-SIP for through-hole mounting. Each package type is lead Pb free suffix, with 100% matte tin leadframe plating. Functional Block Diagram A3280, A3281 and A3283 Chopper-Stabilized, Precision Hall-Effect Latches Selection Guide Packing* A3283ELTTR-T 7-in. reel, 1000 pieces/reel A3283EUA-T Bulk, 500 pieces/bag A3283LLHLT-T 7-in. reel, 3000 pieces/reel A3283LLTTR-T 7-in. reel, 1000 pieces/reel A3283LUA-T Bulk, 500 pieces/bag *Contact Allegro for additional packing options. Mounting SOT89 Surface Mount 3-pin SIP through hole SOT23W Surface Mount SOT89 Surface Mount 3-pin SIP through hole Ambient, TA °C to 85 to 150 BRP MIN TA = 25°C BOP MAX TA = 25°C Absolute Maximum Ratings Continuous Output Current Operating Ambient Temperature Maximum Junction Temperature Storage Temperature Symbol VCC VRCC B VOUT

PDF Datasheet Preview

A3280, A3281, and A3283 Chopper-Stabilized, Precision Hall-Effect Latches

Last Time Buy

The A3283 part is in production but has been determined to be LAST TIME BUY. This classification indicates that the product is obsolete and notice has been given. Sale of this device is currently restricted to existing customer applications. The device should not be purchased for new design applications because of obsolescence in the near future. Samples are no longer available.

Date of status change August 16, 2010 Deadline for receipt of LAST TIME BUY orders October 29, 2010

Recommended Substitutions:

For existing customer transition, and for new customers or new applications, refer to the A1223. Note The A3280 and A3281 are obsolete. For existing customer transition, and for new customers or new applications, refer to the A1222.

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

A3280, A3281, and A3283

Chopper-Stabilized, Precision Hall-Effect Latches

Packages:

Package LH

Package LT Not to scale

Package UA

Description The A3280, A3281, and A3283 Hall-effect latches are extremely temperature-stable and stress-resistant sensor ICs 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. The three devices are identical except for magnetic switch points.

Each device includes on a single silicon chip a voltage regulator, Hall-voltage generator, small-signal amplifier, chopper stabilization, Schmitt trigger, and a short-circuit protected open-collector output to sink up to 25 mA. A south pole of sufficient strength will turn the output on. A north pole is necessary to turn the output off. An on-board regulator permits operation with supply voltages of to 24 volts.

Three package styles provide a magnetically optimized package for most applications. Package type LH is a modified SOT23W surface-mount package, LT is a miniature SOT89/TO-243AA transistor package for surface-mount applications while UA is a three-lead ultra-mini-SIP for through-hole mounting. Each package type is lead Pb free suffix, with 100% matte tin leadframe plating.

Functional Block Diagram

A3280, A3281 and A3283

Chopper-Stabilized, Precision Hall-Effect Latches

Selection Guide

Packing*

A3283ELTTR-T 7-in. reel, 1000 pieces/reel

A3283EUA-T

Bulk, 500 pieces/bag

A3283LLHLT-T 7-in. reel, 3000 pieces/reel

A3283LLTTR-T 7-in. reel, 1000 pieces/reel

A3283LUA-T

Bulk, 500 pieces/bag
*Contact Allegro for additional packing options.

Mounting

SOT89 Surface Mount 3-pin SIP through hole SOT23W Surface Mount SOT89 Surface Mount 3-pin SIP through hole

Ambient, TA °C
to 85
to 150

BRP MIN TA = 25°C

BOP MAX TA = 25°C

Absolute Maximum Ratings

Continuous Output Current

Operating Ambient Temperature

Maximum Junction Temperature Storage Temperature

Symbol VCC VRCC B VOUT

Notice: we do not provide any warranties that information, datasheets, application notes, circuit diagrams, or software stored on this website are up-to-date or error free. The archived A3281LLTTR Datasheet file may be downloaded here without warranties.

Datasheet ID: A3281LLTTR 516016