A1101, A1102, A1103, A1104, and A1106: Continuous-Time Switch Family

The Allegro A1101-A1104 and A1106 Hall-effect switches are next generation replacements for the popular Allegro 312x and 314x lines of unipolar switches. The A110x family, produced with BiCMOS technology, consists of devices that feature fast power-on time and low-noise operation. Device programming is performed after packaging, to ensure increased switchpoint accuracy by eliminating offsets that can be induced by package stress. Unique Hall element geometries and low-offset amplifiers help to minimize noise and to reduce the residual offset voltage normally caused by device overmolding, temperature excursions, and thermal stress.

The A1101-A1104 and A1106 Hall-effect switches include the following on a single silicon chip: voltage regulator, Hall-voltage generator, small-signal amplifier, Schmitt trigger, and NMOS output transistor. The integrated voltage regulator permits operation from 3.8 to 24 V. The extensive on-board protection circuitry makes possible a ±30 V absolute maximum voltage rating for superior protection in automotive and industrial motor commutation applications, without adding external components. All devices in the family are identical except for magnetic switchpoint levels.

The small geometries of the BiCMOS process allow these devices to be provided in ultrasmall packages. The package styles available provide magnetically optimized solutions for most applications. Package LH is an SOT23W, a miniature low-profile surface-mount package, while package UA is a three-lead ultramini SIP for through-hole mounting. Each package is lead (Pb) free, with 100% matte tin plated leadframes.

SAMPLE & BUY

Astrorep Inc. (Allegro and Sanken Semiconductors, Sanken Power Supplies)
141 John Street, Suite 300
Babylon, NY 11702
Phone: (631)422-2500
Fax: (631)422-2504
Web: www.astrorepinc.com
Email: 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
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  • AEC-Q100 automotive qualified 
  • Continuous-time operation
    • Fast power-on time
    • Low noise
  • Stable operation over full operating temperature range
  • Reverse-battery protection
  • Solid-state reliability
  • Factory-programmed at end-of-line for optimum performance
  • Robust EMC performance
  • High ESD rating
  • Regulator stability without a bypass capacitor

The small geometries of the BiCMOS process allow these devices to be provided in ultrasmall packages. The package styles available provide magnetically optimized solutions for most applications. Package LH is an SOT23W, a miniature low-profile surface-mount package, while package UA is a three-lead ultramini SIP for through-hole mounting. Each package is lead (Pb) free, with 100% matte tin plated leadframes.

Packages

 

Replacement Device Characteristics Table

Device A110x Characteristics
BOP BRP Hys
Legacy Replacement Min Max Min Max Min Max
3141 A1101 30 175 10 145 20 80
3142 A1102 115 245 60 190 30 80
3143 A1103 205 355 150 300 30 80
3144 A1104 35 450 25 430 20 -
3121 A1106 260 430 160 330 70 140

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Product Image Functional Block Diagram

Part Number Specifications and Availability

Part Number Package Type Temperature RoHS
Compliant
Part Composition /
RoHS Data
Comments Samples Check
Distributor Stock
A1101ELHLT-T 3-lead SOT -40°C to 85°C Yes View Data Contact your
local sales rep
Check Stock
A1101ELHLX-T 3-lead SOT -40°C to 85°C Yes View Data Contact your
local sales rep
Check Stock
A1101EUA-T 3-lead SIP -40°C to 85°C Yes View Data Contact your
local sales rep
Check Stock
A1101LLHLT-T 3-lead SOT -40°C to 150°C Yes View Data Contact your
local sales rep
Check Stock
A1101LLHLX-T 3-lead SOT -40°C to 150°C Yes View Data Contact your
local sales rep
Check Stock
A1101LUA-T 3-lead SIP -40°C to 150°C Yes View Data Contact your
local sales rep
Check Stock
A1102ELHLT-T 3-lead SOT -40°C to 85°C Yes View Data Contact your
local sales rep
Check Stock
A1102ELHLX-T 3-lead SOT -40°C to 85°C Yes View Data Contact your
local sales rep
Check Stock
A1102EUA-T 3-lead SIP -40°C to 85°C Yes View Data Contact your
local sales rep
Check Stock
A1102LLHLT-T 3-lead SOT -40°C to 150°C Yes View Data Contact your
local sales rep
Check Stock
A1102LUA-T 3-lead SIP -40°C to 150°C Yes View Data Contact your
local sales rep
Check Stock
A1103ELHLT-T 3-lead SOT -40°C to 85°C Yes View Data Contact your
local sales rep
Check Stock
A1103ELHLX-T 3-lead SOT -40°C to 85°C Yes View Data Contact your
local sales rep
Check Stock
A1103EUA-T 3-lead SIP -40°C to 85°C Yes View Data Contact your
local sales rep
Check Stock
A1103LLHLT-T 3-lead SOT -40°C to 150°C Yes View Data Contact your
local sales rep
Check Stock
A1103LLHLX-T 3-lead SOT -40°C to 150°C Yes View Data Contact your
local sales rep
Check Stock
A1103LUA-T 3-lead SIP -40°C to 150°C Yes View Data Contact your
local sales rep
Check Stock
A1104EUA-T 3-lead SIP -40°C to 85°C Yes View Data Contact your
local sales rep
Check Stock
A1104LLHLT-T 3-lead SOT -40°C to 150°C Yes View Data Contact your
local sales rep
Check Stock
A1104LLHLX-T 3-lead SOT -40°C to 150°C Yes View Data Contact your
local sales rep
Check Stock
A1104LUA-T 3-lead SIP -40°C to 150°C Yes View Data Contact your
local sales rep
Check Stock
A1106EUA-T 3-lead SIP -40°C to 85°C Yes View Data Contact your
local sales rep
Check Stock
A1106LLHLT-T 3-lead SOT -40°C to 150°C Yes View Data Contact your
local sales rep
Check Stock
A1106LLHLU-T 3-lead SOT -40°C to 150°C Yes View Data Contact your
local sales rep
Check Stock
A1106LLHLX-T 3-lead SOT -40°C to 150°C Yes View Data Contact your
local sales rep
Check Stock
A1106LUA-T 3-lead SIP -40°C to 150°C Yes View Data Contact your
local sales rep
Check Stock

Allegro’s products are not to be used in any devices or systems, including but not limited to life support devices or systems, in which a failure of Allegro’s product can reasonably be expected to cause bodily harm.

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