Chopper Stabilized Precision Hall Effect Switches

A1120, A1121, A1122

and A1125

13

Allegro MicroSystems, Inc.

115 Northeast Cutoff

Worcester, Massachusetts 01615-0036 U.S.A.

1.508.853.5000; www.allegromicro.com

0.55 REF

Gauge Plane

Seating Plane

0.25 BSC

0.95 BSC

0.95

1.00

0.70

2.40

2

1

A

Active Area Depth, 0.28 mm REF

B

C

C

B

Reference land pattern layout

All pads a minimum of 0.20 mm from all adjacent pads; adjust as necessary

to meet application process requirements and PCB layout tolerances

Branding scale and appearance at supplier discretion

A

PCB Layout Reference View

Standard Branding Reference View

1

Branded Face

N = Last two digits of device part number

T = Temperature code

NNT

2.90 +0.10

–0.20

4°±4°

8X 10° REF

0.180+0.020

–0.053

0.05 +0.10

–0.05

0.25 MIN

1.91 +0.19

–0.06

2.98 +0.12

–0.08

1.00 ±0.13

0.40 ±0.10

For Reference Only; not for tooling use (reference dwg. 802840)

Dimensions in millimeters

Dimensions exclusive of mold flash, gate burrs, and dambar protrusions

Exact case and lead configuration at supplier discretion within limits shown

D

Hall element, not to scale

D

D

D

1.49

0.96

3

Package LH, 3-Pin (SOT-23W)