A3423: Dual Channel Hall Effect Direction Detection Sensor IC

These parts are discontinued. Samples are no longer available. Date of status change: June 2, 2014.

Recommended Substitutions: For existing customer transition, and for new customers or new applications, refer to the A1233LK-T.

The A3423 is a dual-channel Hall-effect sensor IC ideal for use in speed and direction sensing applications incorporating encoder ring-magnet targets. The A3423 provides various output signals that indicate speed and direction of target rotation. The Hall elements are both photolithographically aligned to better than 1 µm. Maintaining accurate displacement between the two active Hall elements eliminates the major manufacturing hurdle encountered in fine-pitch detection applications. The sensor ICs are highly sensitive, temperature-stable magnetic sensor ICs ideal for use in harsh automotive and industrial environments.

The Hall elements of the A3423 are spaced 1.63 mm apart, which provides excellent speed and direction information for small-geometry targets. Extremely low-drift amplifiers guarantee symmetry between the switches to maintain signal quadrature. An on-chip regulator allows the use of this device over a wide operating voltage range of 3.8 to 24 V.

End-of-line trimming of the Hall element switchpoints provides tight matching capability. The continuous-time nature of the Hall elements delivers a fast start-up of the sensor and low noise.

The A3423 has integrated protection against transients on the supply and output pins and short-circuit protection on all outputs.

The A3423 is available in a 4-pin SIP and a plastic 8-pin SOIC surface mount package. Both packages are lead (Pb) free, with 100% matte tin leadframe plating.


Astrorep Inc. (Allegro およびサンケン半導体、サンケン電源)
141 John Street, Suite 300
Babylon, NY 11702
電話: (631)422-2500
ファックス: (631)422-2504
Web: www.astrorepinc.com
電子メール: donna.tweedy@astrorepinc.com

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  • Features and BenefitsFeatures and Benefits
  • PackagingPackaging
  • Technical DocsTechnical Docs
  • NewsNews
  • Precisely aligned dual Hall elements
  • Tightly matched magnetic switchpoints
  • Speed and direction outputs
  • Individual Hall element outputs (L package)
  • Fast power-on time
  • Output short circuit protection
  • Operation from an unregulated power supply
  • Wide operating temperature range
  • Wide operating voltage range
  • Integrated EMC-ESD protection

The A3423 is available in a 4-pin SIP and a plastic 8-pin SOIC surface mount package. Both packages are lead (Pb) free, with 100% matte tin leadframe plating.

K-SIP and L-SOIC combined

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部品番号の仕様およびライフサイクル ステータス

Part Number Package Type Temperature RoHS
部品構成 /
RoHS データ
Comments Samples 代理店の
A3423EK-T 4-lead SIP -40°C to 85°C -- データを見る 生産中止
A3423ELTR-T 8-lead SOIC -40°C to 85°C Y データを見る 生産中止
A3423LK-T 4-lead SIP -40°C to 150°C -- データを見る 生産中止
A3423LLTR-T 8-lead SOIC -40°C to 150°C Y データを見る 生産中止

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