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A3422EKA-T, A3422LKA-T, A3425

Table of contents:
Info of A3422EKA-T
Info of A3422LKA-T
Info of A3425

A3422EKA-T, A3422LKA-T, A3425 Selling Leads, Datasheet

MFG:Allegro Microsystems Inc. Category:Sensors, Sensor Evaluation Kits Package Cooled:5-pin SIP D/C:08+ROHS

A3422EKA-T, A3422LKA-T, A3425 Datasheet download

Five Points

Part Number: A3422EKA-T

Category: Sensors, Sensor Evaluation Kits

MFG: Allegro Microsystems Inc.

Package Cooled: 5-pin SIP

D/C: 08+ROHS

Description: IC SENSOR DIRECT/DETECT 5-SIP

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A3422EKA-T Parameters

Technical/Catalog Information	A3422EKA-T
Vendor	Allegro Microsystems Inc.
Category	Sensors, Sensor Evaluation Kits
Lead Free Status	Lead Free
RoHS Status	RoHS Compliant
Other Names	A3422EKA T A3422EKAT

A3422LKA-T Parameters

Technical/Catalog Information	A3422LKA-T
Vendor	Allegro Microsystems Inc.
Category	Sensors, Sensor Evaluation Kits
Lead Free Status	Lead Free
RoHS Status	RoHS Compliant
Other Names	A3422LKA T A3422LKAT

A3425 General Description

The A3425 is a dual–output-channel, bipolar switch with each channel comprising a separate complete Hall-effect sensor circuit with dedicated Hall element and separate digital output for speed and direction signal processing capability. The independent Hall elements (E1 integrated with OUTPUTA, and E2 integrated with OUTPUTB) are photolithographically aligned to better than 1 ìm. Maintaining this accurate mechanical location between the two active Hall elements eliminates the major manufacturing hurdle encountered in fine-pitch detection applications. The A3425 is a highly sensitive, temperature-stable magnetic sensing device, which is ideal for use in ring magnet-based speed and direction systems used in harsh automotive and industrial environments.

The A3425 contains two independent Hall effect switches, and has a monolithic IC that accurately locates the two Hall elements, E1 and E2, approximately 1 mm apart. The digital outputs are 90° out of phase so that the outputs are in quadrature, with the proper ring magnet design. This allows for easy processing of speed and direction signals. Extremely low-drift amplifiers guarantee symmetry between the switches to maintain signal 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-assembly factory programming provides sensitive switchpoints 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.

A3425 Maximum Ratings

Two matched Hall effect switches on a single substrate
Sensor Hall element spacing approximately 1 mm
Superior temperature stability
3.3 to 18 V operation
Integrated ESD diode from OUTPUT and VCC pins to GND
High-sensitivity switchpoints
Robust structure for EMC protection
Solid-state reliability

A3425 Features

• Two matched Hall effect switches on a single substrate
• Sensor element spacing approximately 1 mm
• Superior temperature stability
• 3.3 V to 18 V operation
• Integrated ESD diode from OUTPUT and VCC pins to GND
• High-sensitivity switchpoints
• Robust structure for EMC protection
• Solid-state reliability

A3425 Connection Diagram

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