Ultra-Sensitive Dual-Channel Quadrature

Hall-Effect Bipolar Switch

A3425

2

Allegro MicroSystems, Inc.

115 Northeast Cutoff, Box 15036

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

www.allegromicro.com

Selection Guide

Part Number

Mounting

A3425EK-T

Yes

Bulk, 500 pieces/bag

4-pin SIP through hole

–40ºC to 85ºC

A3425EKTN-T

Yes

13-in. reel, 4000 pieces/reel

A3425EL-T

Yes

Bulk, 500 pieces/bag

8-pin SOIC surface mount

A3425ELTR-T

Yes

13-in. reel, 3000 pieces/reel

A3425LK-T

Yes

Bulk, 98 pieces/bag

4-pin SIP through hole

–40ºC to 150ºC

A3425LKTN-T

Yes

13-in. reel, 4000 pieces/reel

A3425LL-T

Yes

Bulk, 500 pieces/bag

8-pin SOIC surface mount

A3425LLTR-T

Yes

13-in. reel, 3000 pieces/reel

be NOT FOR NEW DESIGN. This classification indicates that sale of this device is currently restricted to existing customer applications. The

variants should not be purchased for new design applications because obsolescence in the near future is probable. Samples are no longer

available. Status change: May 1, 2006. These variants include: A3425EL, A3425ELTR, A3425LL, and A3425LLTR.

quadrature. The patented chopper stabilization technique cancels

offsets in each channel, and provides stable operation over the

operating temperature and voltage ranges. An on-chip regulator

allows the use of this device over a wide operating voltage range.

Post-assemblyfactoryprogrammingprovidessensitiveswitchpoints

that are symmetrical between the two switches.

The A3425 is available in a plastic 8-pin SOIC surface mount

package (L) and a plastic 4-pin SIP (K), both in two operating

temperature ranges. Each package is available in a lead (Pb) free

version with 100% matte tin plated leadframe.

Description (continued)

Absolute Maximum Ratings

Characteristic

Symbol

Notes

Rating

Units

Supply Voltage

26.5

V

Reverse Battery Voltage

–16

V

Output Off Voltage

V

Output Sink Current

Internally Limited

–

Magnetic Flux Density

B

Unlimited

–

Operating Ambient Temperature

Range E

–40 to 85

ºC

Range L

–40 to 150

ºC

Maximum Junction Temperature

165

ºC

Storage Temperature

–65 to 170

ºC