The A1262 integrated circuit is an ultrasensitive Hall-effect

latch.Itfeaturesoperationwithtraditionalplanarmagneticfield

direction as well as vertical. The dual operation of the planar

and vertical Hall elements allows the end user to achieve 90°

of phase separation that is inherently independent of magnetic

pole spacing. The quadrature outputs of the A1262 allow

rotation direction to be determined, such as when sensing a

rotating ring-magnet target.

The A1262 is available in two options that allow flexibility in

end-systemmagneticdesign.BothoptionsfeatureaplanarHall

plate that is sensitive to magnetic fields perpendicular to the

face of the package (Z). The primary option features a vertical

Hall plate that is sensitive to magnetic fields parallel with the

face of the package across the leaded edges of the package (Y).

The -X option features a vertical Hall plate that is sensitive to

magnetic fields parallel with the face of the package across

the leadless edges of the package (X), resulting in lower total

effective air gap.

Onasinglesiliconchip,thedeviceincludes:twoHallplates(one

planarandonevertical),amultiplexer,asmall-signalamplifier,

chopper stabilization, a Schmitt trigger, and two short-circuit

protected NMOS output transistors to sink up to 20 mA. The

A1262 features circuitry that provides automotive ruggedness

and allows operation from 4 to 24 V over a temperature range

A1262-DS, Rev. 1

• 2D magnetic sensing via planar and vertical Hall elements

• Phase separation between the two channels is inherently 90°

• Dual-channel output allows independent use of Z-axis

planar Hall in conjunction with vertical Hall:

□ Y-axis (default option)

□ X-axis (with -X option)

• Automotive grade

□ AEC-Q100 qualified for use in automotive applications

□ Output short-circuit protection

□ Resistant to physical stress

□ Reverse-battery protection

□ Solid-state reliability

□ Superior temperature stability

□ Supply voltage Zener clamp

• Small size

2D, Dual-Channel, Ultrasensitive Hall-Effect Latch

PACKAGES:

Functional Block Diagram

Not to scale

A1262

X/Y Hall

Z Hall

Amp

Low-Pass

Filter

To All

Subcircuits

Sample, Hold

&Averaging

Regulator

Current

Limit

Current

Limit

OUTPUTA

VDD

GND

OUTPUTB

FEATURES AND BENEFITS

DESCRIPTION

5-Pin SOT23W (Suffix LH)

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