Hall-Effect Switch features advanced programming algorithm.

Press Release Summary:

Utilizing chopper-stabilization technique to eliminate offset inherent in single-element devices, Model A1128 is suitable for high-temperature applications in automotive/industrial markets. Wide range of programmability is available on magnetic operate point, BOP, while hysteresis remains fixed. Offered in 3-lead ultra-mini SIP for through-hole mounting, unipolar device also uses dynamic offset cancellation technique, with internal high-frequency clock, which minimizes residual offset voltage.

Original Press Release:

Allegro MicroSystems, Inc. Announces New Highly Programmable, Hall-Effect Switch

With Advanced Programming Algorithm

Worcester, MA– Allegro announces a new field-programmable, unipolar Hall-effect switch designed for use in high-temperature applications. The A1128 device uses a chopper-stabilization technique to eliminate offset inherent in single-element devices. Allegro’s new device has an advanced programming algorithm to simplify the customer’s end-of-line process. It also has a higher programming resolution for tighter magnetic switch points. It is targeted at the automotive and industrial markets.

The devices are externally programmable. A wide range of programmability is available on the magnetic operate point, BOP, while the hysteresis remains fixed. This advanced feature allows optimization of the sensor IC switchpoint and can drastically reduce the effects of mechanical placement tolerances found in end-use production environments.

A proprietary dynamic offset cancellation technique, with an internal high-frequency clock, reduces the residual offset voltage, which is normally caused by device overmolding, temperature dependencies, and thermal stress. Having the Hall element and amplifier in a single chip minimizes many problems normally associated with low-level analog signals.

This device is offered in the UA package. The UA is a three-lead ultra-mini SIP for through-hole mounting. This package is lead (Pb) free, with 100% matte tin plated leadframes.  The A1128LUA-T is priced at $0.49 in quantities of 1,000.

Allegro MicroSystems, Inc. is a leader in developing, manufacturing and marketing high-performance semiconductors. Allegro's innovative solutions serve high-growth applications within the automotive market, with additional focus on office automation, industrial, and consumer/communications solutions. Allegro is headquartered in Worcester, Massachusetts (USA) with design, applications, and sales support centers located worldwide. Further information about Allegro can be found at www.allegromicro.com.

Contact information: Stephanie Fennelley, Allegro MicroSystems, 115 Northeast Cutoff, Worcester, MA 01606

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