A1184: Standard Two-Wire Field-Programmable Chopper-Stabilized Unipolar Hall-Effect Switch

This device is no longer in production. The device should not be purchased for new design applications. Samples are no longer available. Date of status change: October 31, 2011.

Recommended substitution: For existing customer transition, and for new customers or new applications, contact Allegro Sales.

The A1184 device is a standard, two-wire, unipolar, Hall-effect switch. The operate point, BOP, can be field-programmed, after final packaging of the sensor and placement into the application. This advanced feature allows the optimization of the sensor switching performance, by effectively accounting for variations caused by mounting tolerances for the device and the target magnet.

This family of devices are produced on the Allegro MicroSystems advanced BiCMOS wafer fabrication process, which implements a patented, high-frequency, chopper-stabilization technique that achieves magnetic stability and eliminates the offsets that are inherent in single-element devices exposed to harsh application environments. Commonly found in a number of automotive applications, the A1184 is utilized to sense: seat track position, seat belt buckle presence, hood/trunk latching, and shift selector position.

Two-wire unipolar switches are particularly advantageous in price-sensitive applications, because they require one less wire than the more traditional open-collector output switches. Additionally, the system designer gains inherent diagnostics because output current normally flows in either of two narrowly-specified ranges. Any output current level outside of these two ranges is a fault condition. The A1184 also features on-chip transient protection, and a Zener clamp to protect against overvoltage conditions on the supply line.

The output current of the A1184 switches HIGH in the presence of a south polarity magnetic field of sufficient strength; and switches LOW otherwise, including when there is no significant magnetic field present.

Both devices are offered in two package styles: LH, a SOT-23W miniature low-profile package for surface-mount applications, and UA, a three-lead ultramini Single Inline Package (SIP) for through-hole mounting. Each package is available in a lead (Pb) free version (suffix, –T) with 100% matte tin plated leadframe.

Also see: A1180, A1181, A1182, A1183, A1185, and A1186.

DATASHEETS
SAMPLE & BUY

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

If this is not your local representative, find your local sales rep here.

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  • Features and BenefitsFeatures and Benefits
  • PackagingPackaging
  • Technical DocsTechnical Docs
  • NewsNews
  • Chopper stabilization
    • Low switchpoint drift over operating temperature range
    • Low stress sensitivity
  • Field-programmable for optimized switchpoints
  • On-chip protection
    • Supply transient protection
    • Reverse-battery protection
    • On-board voltage regulator
    • 3.5 to 24 V operation

Both devices are offered in two package styles: LH, a SOT-23W miniature low-profile package for surface-mount applications, and UA, a three-lead ultramini Single Inline Package (SIP) for through-hole mounting. Each package is available in a lead (Pb) free version (suffix, –T) with 100% matte tin plated leadframe.

UA/LH Combination

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Functional Block Diagram

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
適合
部品構成 /
RoHS データ
Comments Samples 代理店の
在庫確認
A1184ELHLT-T 3-lead SOT -40°C to 85°C Y データを見る 生産中止
地域の販売担当者へのお問い合わせ
在庫の確認
A1184EUA-T 3-lead SIP -40°C to 85°C Y データを見る 生産中止
地域の販売担当者へのお問い合わせ
在庫の確認
A1184LLHLT-T 3-lead SOT -40°C to 150°C Y データを見る 生産中止
地域の販売担当者へのお問い合わせ
在庫の確認
A1184LUA-T 3-lead SIP -40°C to 150°C Y データを見る 生産中止
地域の販売担当者へのお問い合わせ
在庫の確認

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