Sharp LT261A Datasheet

Hall IC

LT261A

■ Features

¡Operation by small magnet due to high sensitivity

Operating point<10mT

¡Combining a GaAs Hall device and an IC in a compact

package (2.9X1.5X1.1mm)

¡Wide operation temperature range obtained by GaAs Hall

device (-20 to +125˚C)

¡Long life time due to noncontact-type

■ Applications

¡FDD
¡HDD
¡Water meter
¡Car stereo
¡Microswitch, etc.

■ Absolute Maximum Ratings

Supply voltage

Parameter

Output voltage
Output current
Power dissipation
Operating temperature
Storage temperature

Soldering temperature

*1 Soldering time : within 10 seconds

*1

Symbol

V

CC

V

OUT

I

O

P

D

T

opr

T

stg

T

sol

(Ta=25˚C)

Rating

18
18

5

100

-20 to +125

-55 to +150
260

Unit

V
V

mA

mW

˚C
˚C
˚C

LT261A

GaAs Hall IC for Noncontact Switch

(Alternating magnetic field-type*)

*Zero-cross is not warranted.

■ Outline Demensions

2.7±0.3

0.40.4

1.9

2.9±0.2

Hall device center line
X : +0.05±0.23mm against package center
Y : -0.05±0.1mm against package lead center between
No.2 and No.3 terminals
Z : 0.81±0.15mm from package surface

+0.10

-0.06

0.16

*No.3 terminal and the section of leads (both sides
of package in X direction) are connected with the
terminal of internal IC. Be careful in connecting other circuits.

Y

1

2

1.5±0.2

0.6 0.6

As for dimensions of tape-packaged products, refer to page 44 .

■ Operating Explanation

Output voltage

(Unit : Fmm)

0.6

4

0.850.95

SZ

3

X

0.4

4-R0.2

Terminal connections

0.30.8

Hall

device

+0.2

-0.1

1.1

(0to0.15)

<Alternating magnetic field-type>

H

REG

+

-

1 : V

CC

2 : V

OUT

3 : Don't use.
4 : GND

2.9±0.2

BRP0B

OP

Magnetic flux density

+B

■ Electrical Characteristics (T

Parameter
Operating magnetic flux density
Hysteresis breadth

Operating voltage
Supply current
Low level output voltage
High level output voltage
Output short circuit current
Operating point temperature drift

In the absence of confirmation by device specification sheets, SHARP takes no responsibility for any defects that may occur in equipment using any SHARP devices
shown in catalogs, data books, etc. Contact SHARP in order to obtain the latest device spcification sheets before using any SHARP device.

Symbol

B

OP

B

RP

B

H

V

CC

I

CC

V

OL

V

OH

I

OS

∆B

OP

Conditions

V

CC

=16V

VOO=16V

V

CC

=16V, B=<-10mT

V

CC

=16V, IO=4mA, B>=10mT

V

CC

=16V, IO=-100µA, B=<-10mT

V

CC

=16V

V

CC

=16V, Ta=-20˚C to +80˚C

MIN.

-

-10

-

4.5

-

-

13.9

-1.55

-6

TYP.

-

-

-

-

-

-

-

-

-

MAX.

10

­5

16

10.5

0.4

-

-0.80
6

a

=25˚C)

Unit

mT
mT
mT

V

mA

V

V
mA
mT

Hall IC

LT261A

Fig. 1 Operating Magnetic Flux Density

vs. Supply Voltage

Ta=25˚C

12

(mT)

8

4

0

B

OP

B

RP

-4

-8

-12

Operating magnetic flux density B

016812420

Supply voltage VCC (V)

Fig. 3 Supply Current vs. Supply Voltage

10

B=<-10mT

a=25˚C

T

8

6

Fig. 2 Operating Magnetic Flux Density vs.

Ambient Temperature

VCC=16V

12

8

4

0

B

BRP

OP

-4

-8

-12

Operating magnetic flux density B (mT)

-40 12040 800
Ambient temperature Ta (˚C)

Fig. 4 Supply Current vs. Ambient

Temperature

10

VCC=16V

B=<-10mT

8

(mA)

CC

6

4

Supply current ICC (mA)

2

0

0164 8 12 20

Supply voltage VCC (V)

Fig. 5 Low Level Output Voltage vs.

Output Current

1.0
VCC=16V

B>=10mT

(V)

0.8

a

=25˚C

T

OL

0.6

0.4

0.2

Low level output voltage V

0

04123 5

Output current IO (mA)

4

Supply current I

2

0

-40 12004080
Ambient temperature Ta (˚C)

Fig. 6 Low Level Output Voltage vs.

Ambient Temperature

1.0
VCC=16V

I

O

(V)

OL

Low level output voltage V

=4mA

0.8

B>=10mT

0.6

0.4

0.2

0

Ambient temperature Ta (˚C)

80-40 0 40 120