A3213 and A3214: Micropower, Ultrasensitive Hall-Effect Switches

The A3213 and A3214 integrated circuits are ultra-sensitive, pole independent Hall-effect switches with a latched digital output. They are especially suited for operation in battery-operated, hand-held equipment such as cellular and cordless telephones, pagers, and palmtop computers. A 2.4 to 5.5 V operation and a unique clocking scheme reduce the average operating power requirements – the A3213 to 825 µW, the A3214 to 14 µW (typical, at 2.75 V). Except for operating duty cycle and average operating current, the A3213 and A3214 are identical.

Unlike other Hall-effect switches, either a north or south pole of sufficient strength will turn the output on; in the absence of a magnetic field, the output is off. The polarity independence and minimal power requirement allows these devices to replace reed switches for superior reliability and ease of manufacturing, while eliminating the requirement for signal conditioning.

Improved stability is made possible through chopper stabilization (dynamic offset cancellation), which reduces the residual offset voltage normally caused by device overmolding, temperature dependencies, and thermal stress.

These devices include, on a single silicon chip, a Hall-voltage generator, small-signal amplifier, chopper stabilization, a latch, and a MOSFET output. Advanced BiCMOS processing is used to take advantage of low-voltage and low-power requirements, component matching, very low input-offset errors, and small component geometries.

Range 'E' devices are rated for operation over a temperature range of -40°C to 85°C; range 'L' devices are rated for operation over a temperature range of -40°C to 150°C. Two package styles provide a magnetically optimized package for most applications. 'LH' is a miniature low-profile surface-mount package, 'UA' is a three-lead SIP for through-hole mounting. For the A3213, a microleadless DFN/MLP package 'EL' also is available. Each package is available in a lead (Pb) free version (suffix, –T), with a 100% matte tin plated leadframe.

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
  • NewsNews
  • AEC-Q100 automotive qualified 
  • Micropower operation
  • Operate with north or south pole
  • 2.4 to 5.5 V battery operation
  • Chopper stabilized
    • Superior temperature stability
    • Extremely low switchpoint drift
    • Insensitive to physical stress
  • High ESD protection
  • Solid-state reliability
  • Small size
  • Simply manufacturable with magnet pole independence

Two package styles provide a magnetically optimized package for most applications. 'LH' is a miniature low-profile surface-mount package, 'UA' is a three-lead SIP for through-hole mounting. For the A3213, a microleadless DFN/MLP package 'EL' also is available. Each package is available in a lead (Pb) free version (suffix, –T), with a 100% matte tin plated leadframe.

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Part Number Specifications and Availability

Part Number Package Type Temperature RoHS
Compliant
Part Composition /
RoHS Data
Comments Samples Check
Distributor Stock
A3213ELHLT-T 3-lead SOT -40°C to 85°C Yes View Data Contact your
local sales rep
Check Stock
A3213ELHLX-T 3-lead SOT -40°C to 85°C Yes View Data Contact your
local sales rep
Check Stock
A3213EUA-T 3-lead SIP -40°C to 85°C Yes View Data Contact your
local sales rep
Check Stock
A3213LLHLT-T 3-lead SOT -40°C to 150°C Yes View Data Contact your
local sales rep
Check Stock
A3213LLHLX-T 3-lead SOT -40°C to 150°C Yes View Data Contact your
local sales rep
Check Stock
A3213LUA-T 3-lead SIP -40°C to 150°C Yes View Data Contact your
local sales rep
Check Stock
A3214ELHLT-T 3-lead SOT -40°C to 85°C Yes View Data Contact your
local sales rep
Check Stock
A3214ELHLX-T 3-lead SOT -40°C to 85°C Yes View Data Contact your
local sales rep
Check Stock
A3214EUA-T 3-lead SIP -40°C to 85°C Yes View Data Contact your
local sales rep
Check Stock
A3214LLHLT-T 3-lead SOT -40°C to 150°C Yes View Data Contact your
local sales rep
Check Stock
A3214LLHLX-T 3-lead SOT -40°C to 150°C Yes View Data Contact your
local sales rep
Check Stock
A3214LUA-T 3-lead SIP -40°C to 150°C Yes View Data Contact your
local sales rep
Check Stock

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