ATS128 datasheet(9/25 Pages) ALLEGRO

9 / 25 page

Highly Programmable, Back-Biased,

Hall-Effect Switch with TPOS Functionality

ATS128LSE

Allegro MicroSystems, LLC

115 Northeast Cutoff

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

1.508.853.5000; www.allegromicro.com

Air Gap Operating Range

The Programmable Air Gap Range, AGRange, can be pro-

grammed around the zero crossing point, within the range limits:

AGRange(min) and AGRange(max). The available programming

range for AGRange falls within the distributions of the initial,

minimum code setpoint (BOPSEL = 255, BOPPOL = 1), and the

maximum code setpoint (BOPSEL = 255, BOPPOL = 0). The

switchpoint can correspond to an air gap smaller than 1.5 mm or

larger than 2.5 mm, as shown in figure 3.

Typical initial value

before customer

programming

AGRange(min)

= 2.5 mm

AGRange(max)

= 1.5 mm

Programming range

(specified limits)

Distribution of values

resulting from maximum

programming code

Distribution of values

resulting from minimum

programming code

Air Gap, AG

Figure 3. On the horizontal axis, the operating air gap may exceed the

recommended range for switching. The maximum and minimum values

for the actual operating air gap range are described by distributions of the

maximum and minimum code setpoints.

ATS128 Datasheet(PDF) 9 Page - Allegro MicroSystems