3361

AND

3362

Suffix Code 'LH' Pinning

2-WIRE, CHOPPER-STABILIZED,

HALL-EFFECT SWITCHES

The A3361x and A3362x Hall-effect switches are extremely

temperature-stable and stress-resistant sensors. Superior performance

over temperature is made possible through dynamic offset cancellation,

which reduces the residual offset voltage normally caused by device

overmolding, temperature dependencies, and thermal stress. The two

devices differ only in output polarity; the A3361x output current goes

low in the presence of a south pole of sufficient strength; the A3362x

output current goes high.

Each device includes on a single silicon chip a voltage regulator,

Hall-voltage generator, small-signal amplifier, chopper stabilization,

Schmitt trigger, and a constant-current open-collector output. An

on-board regulator permits operation with supply voltages of 3.5 to 24

volts. Noise radiation is limited by control of the output current slew

rate.

Three package styles provide a magnetically optimized package for

most applications. Suffix ‘xLH’ is a miniature low-profile surface-

mount package, ‘xLT’ is a miniature SOT-89/TO-243AA transistor

package for surface-mount applications; while suffix ‘xUA’ is a three-

lead ultra-mini-SIP for through-hole mounting.

Data Sheet

27621.50

3

NC

1

2

X

GROUND

NO (INTERNAL)

CONNECTION

Dwg. PH-003-5

Pinning is shown viewed from branded side.

PRELIMINARY INFORMATION

(subject to change without notice)

August 28, 2000

SUPPLY

FEATURES

ABSOLUTE MAXIMUM RATINGS

at T

A

=+25

°

C

Supply Voltage, V

CC

........................

26.5 V

Reverse Battery Voltage, V

RCC

..........

-16 V

Magnetic Flux Density, B ...........

Unlimited

Package Power Dissipation, P

D

.

See Graph

Junction Temperature, T

J

...............

+170

°

C

Operating Temperature Range,

T

A

...............................

-40

°

C to +85

°

C

Storage Temperature Range,

T

S

..............................

-65

°

C to +170

°

C

Always order by complete part number: the prefix 'A' + the basic four-digit

part number + a suffix to indicate operating temperature range (E) +

a two-letter suffix to indicate package style, e.g.,

A3361ELH .

I

Internal Current Regulator for 2-Wire Operation

I

Resistant to Physical Stress

I

Superior Temperature Stability

I

Operation From Unregulated Supply

I

Solid-State Reliability

I

Small Size

3361

AND

3362

2-WIRE,

CHOPPER-STABILIZED,

HALL-EFFECT SWITCHES

FUNCTIONAL BLOCK DIAGRAM

SUPPLY

REG.

TO ALL

SUBCIRCUITS

DYNAMIC

OFFSET CANCELLATION

SAMPLE

& HOLD

X

LOW-PASS

FILTER

GROUND

Dwg. FH-020-6

Suffix Code 'UA' Pinning

(SIP)

Suffix Code 'LT' Pinning

(SOT-89/TO-243AA)

X

NC

X

1

2

3

1

2

3

GROUND

Dwg. PH-003-7A

Dwg. PH-003-6

Pinning is shown viewed from branded side.

2

115 Northeast Cutoff, Box 15036

Worcester, Massachusetts 01615-0036 (508) 853-5000

NO (INTERNAL)

CONNECTION

GROUND

SUPPLY

3361

AND

3362

2-WIRE,

CHOPPER-STABILIZED,

HALL-EFFECT SWITCHES

ELECTRICAL CHARACTERISTICS over operating temperature range.

Limits

Characteristic

Supply Voltage

Output Current

Symbol

V

CC

I

GND(L)

I

GND(H)

Chopping Frequency

Output Settling Time

Output Rise Time

Output Fall Time

Reverse Battery Current

f

C

t

sd

t

r

t

f

I

CC

C

L

= 20 pF

C

L

= 20 pF

C

L

= 20 pF

V

RCC

= -16 V

Test Conditions

Operating

Output Current Low

Output Current High

Min.

3.5

5.0

12

–

Typ.

12

–

340

–

3.5

–

Max.

24

6.9

17

–

50

–

-15

Units

V

mA

kHz

µs

mA

NOTE: Typical Data is at T

A

= +25°C and V

CC

= 12 V and is for design information only.

A3361 MAGNETIC CHARACTERISTICS over operating supply voltage and temperature ranges.

Limits

Characteristic

Operate Point

Release Point

Hysteresis

Symbol

B

OP

B

RP

B

hys

Test Conditions

B > B

OP

, I

GND

= LOW

B < B

RP

, I

GND

= HIGH

B

OP

- B

RP

Min.

–

40

5.0

Typ.

–

Max.

125

–

30

Units

G

A3362 MAGNETIC CHARACTERISTICS over operating supply voltage and temperature ranges.

Limits

Characteristic

Operate Point

Release Point

Hysteresis

Symbol

B

OP

B

RP

B

hys

Test Conditions

B > B

OP

, I

GND

= HIGH

B < B

RP

, I

GND

= LOW

B

OP

- B

RP

Min.

–

40

5.0

Typ.

–

Max.

125

–

30

Units

G

www.allegromicro.com

3

3361

AND

3362

2-WIRE,

CHOPPER-STABILIZED,

HALL-EFFECT SWITCHES

OUTPUT CHARACTERISTICS

A3361x

+I

A3362x

+I

I

OUT

+ I

CC

I

OUT

+ I

CC

OUTPUT CURRENT

B

RP

B

OP

B

RP

B

OP

I

CC

I

CC

0

FLUX DENSITY

+B

Dwg. GH-007-4

0

FLUX DENSITY

+B

Dwg. GH-007-3

4

115 Northeast Cutoff, Box 15036

Worcester, Massachusetts 01615-0036 (508) 853-5000

3361

AND

3362

2-WIRE,

CHOPPER-STABILIZED,

HALL-EFFECT SWITCHES

SENSOR LOCATIONS

ALLOWABLE PACKAGE POWER DISSIPATION in MILLIWATTS

700

(±0.005” [0.13 mm] die placement)

600

Package Designator “LH”

ACTIVE AREA DEPTH

0.011"

0.28 mm

NOM

0.059"

1.49 mm

3

0.038"

0.96 mm

Suffix "–UA"

R

θJA

= 206°C/W

500

Suffix "–LH"

R

θJA

= 248°C/W

400

Suffix "–LT"

R

θJA

= 258°C/W

300

A

1

2

Dwg. MH-025

200

100

Package Designator “LT”

ACTIVE AREA DEPTH

0.030"

0.76 mm

NOM

0

20

40

60

80

120

100

AMBIENT TEMPERATURE in

°C

140

160

180

Dwg. GH-046-4

0.088"

2.24 mm

0.045"

1.14 mm

A

1

2

3

Dwg. MH-008-8

Package Designators “UA” and "UA-TL"

ACTIVE AREA DEPTH

0.018"

0.46 mm

NOM

0.080"

2.04 mm

0.056"

1.44 mm

Allegro

A

BRANDED

SURFACE

1

2

3

Dwg. MH-011-9A

Although sensor location is accurate to three sigma for a

particular design, product improvements may result in small

changes to sensor location.

www.allegromicro.com

5

参数名称	属性值
最大工作温度	125 Cel
最小工作温度	-55 Cel
端子数量	3
加工封装描述	1/4 INCH, SQUARE, 3 PINS
状态	ACTIVE
包装形状	RECTANGULAR PACKAGE
端子形状	FLAT
安装特点	SURFACE MOUNT
额定温度	70 Cel
制造商系列
电阻类型	TRIMMER
电阻率	LINEAR
控制阀类型	SCREW
匝数	1
控制阀方向	HORIZONTAL; VERTICAL
电阻元件材料	CERMET

A3361LT

A3361LT概述

A3361LT规格参数

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