A3290KUA-T

A3290KUA-T Datasheet

A3290 and A3291

Part	Datasheet
A3290KUA-T	A3290KUA-T (pdf)

PDF Datasheet Preview
A3290 and A3291 Chopper-Stabilized, Precision Hall-Effect Latches for Consumer and Industrial Applications PACKAGES: Not to scale 3-pin SOT23W suffix LH NOT FOR NEW DESIGN 3-pin SIP, matrix HD style suffix UA 3-pin SIP, chopper style suffix UA The A3290 and A3291 Hall-effect latches are extremely temperature-stable and stress-resistant sensor ICs, especially suited for operation over extended temperature ranges up to 125°C . Superior high-temperature performance is made possible through dynamic offset cancellation, which reduces the residual offset voltage normally caused by device package overmolding, temperature dependencies, and thermal stress. The two devices are identical except for their magnetic switchpoints. They are not intended for automotive applications. Both devices include, on a single silicon chip, a voltage regulator, a Hall voltage generator, a small-signal amplifier, chopper stabilization, a Schmitt trigger, and a short-circuit protected open-drain output to sink up to 25 mA.Asouth polarity magnetic field of sufficient strength is required to turn the output on. A north polarity field of sufficient strength is necessary to turn the output off. An onboard regulator permits operation with supply voltages in the range of 3 to 24 V. Two package styles provide a magnetically optimized package for most applications type LH is a miniature SOT23W lowprofile surface-mount package, and type UA is a three-pin ultramini SIP for through-hole mounting. Both packages are lead Pb free with 100% matte-tin leadframe plating. Dynamic Offset Cancellation Sample and Hold Regulator Low-Pass Filter Control Current Limit Functional Block Diagram September 21, 2017 A3290 and A3291 Chopper-Stabilized, Precision Hall-Effect Latches for Consumer and Industrial Applications SPECIFICATIONS SELECTION GUIDE Packing [1] A3290KLHLT-T A3290KLHLX-T A3290KUA-T [3] A3291KLHLT-T A3291KLHLX-T A3291KUA-T 3000 pieces per 7-in. reel 10000 pieces per 13-in. reel 500 pieces per bulk bag 3000 pieces per 7-in. reel 10000 pieces per 13-in. reel 500 pieces per bulk bag Package Type Surface-mount SOT23W Surface-mount SOT23W Through-hole ultramini SIP Surface-mount SOT23W Surface-mount SOT23W Through-hole ultramini SIP Magnetic Switchpoints [2] Operate, BOP G Release, BRP G 5 to 50 10 to 100 to [1] Contact Allegro for additional packing options. [2] Algebraic convention used + south polarity, north polarity. [3] The chopper-style UA package is not for new design the matrix HD style UA package is recommended for new designs. ABSOLUTE MAXIMUM RATINGS Characteristic VCC VRCC VOUT

PDF Datasheet Preview

A3290 and A3291

Chopper-Stabilized, Precision Hall-Effect Latches for Consumer and Industrial Applications

PACKAGES:

Not to scale
3-pin SOT23W suffix LH

NOT FOR NEW DESIGN
3-pin SIP, matrix HD style
suffix UA
3-pin SIP, chopper style
suffix UA

The A3290 and A3291 Hall-effect latches are extremely temperature-stable and stress-resistant sensor ICs, especially suited for operation over extended temperature ranges up to 125°C . Superior high-temperature performance is made possible through dynamic offset cancellation, which reduces the residual offset voltage normally caused by device package overmolding, temperature dependencies, and thermal stress. The two devices are identical except for their magnetic switchpoints. They are not intended for automotive applications.

Both devices include, on a single silicon chip, a voltage regulator, a Hall voltage generator, a small-signal amplifier, chopper stabilization, a Schmitt trigger, and a short-circuit protected open-drain output to sink up to 25 mA.Asouth polarity magnetic field of sufficient strength is required to turn the output on. A north polarity field of sufficient strength is necessary to turn the output off. An onboard regulator permits operation with supply voltages in the range of 3 to 24 V.

Two package styles provide a magnetically optimized package for most applications type LH is a miniature SOT23W lowprofile surface-mount package, and type UA is a three-pin ultramini SIP for through-hole mounting. Both packages are lead Pb free with 100% matte-tin leadframe plating.

Dynamic Offset Cancellation

Sample and Hold

Regulator

Low-Pass Filter

Control Current Limit

Functional Block Diagram

September 21, 2017

A3290 and A3291

Chopper-Stabilized, Precision Hall-Effect Latches for Consumer and Industrial Applications

SPECIFICATIONS

SELECTION GUIDE

Packing [1]

A3290KLHLT-T A3290KLHLX-T A3290KUA-T [3] A3291KLHLT-T A3291KLHLX-T

A3291KUA-T
3000 pieces per 7-in. reel 10000 pieces per 13-in. reel
500 pieces per bulk bag 3000 pieces per 7-in. reel 10000 pieces per 13-in. reel 500 pieces per bulk bag

Package Type

Surface-mount SOT23W Surface-mount SOT23W Through-hole ultramini SIP Surface-mount SOT23W Surface-mount SOT23W Through-hole ultramini SIP

Magnetic Switchpoints [2]

Operate, BOP G

Release, BRP G
5 to 50
10 to 100 to
[1] Contact Allegro for additional packing options. [2] Algebraic convention used + south polarity, north polarity.
[3] The chopper-style UA package is not for new design the matrix HD style UA package is recommended for new designs.

ABSOLUTE MAXIMUM RATINGS

Characteristic

VCC VRCC VOUT

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Datasheet ID: A3290KUA-T 516017