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【Category】 Hall Effect Latches
【Packing】 3-Lead SOT
【MFQ】 ALLEGRO
【Datasheet】A3280LLTTR Datasheet
A3280, A3281, and A3283
Chopper-Stabilized, Precision Hall-Effect Latches
Features
- Symmetrical Switch Points
- Resistant to Physical Stress
- Superior Temperature Stability
- Output Short-Circuit Protection
- Operation From Unregulated Supply
- Reverse Battery Protection
- Solid-State Reliability
- Small Size
Description
The A3280--, A3281--, and A3283-- Hall-effect latches are extremely temperature-stable and stress-resistant sensors especially suited for operation over extended temperature ranges to +150°C. Superior high-temperature performance is made possible through dynamic offset cancellation, which reduces the residual offset voltage normally caused by device overmolding, temperature dependencies, and thermal stress. The three devices are identical except for magnetic switch points.
Each device includes on a single silicon chip a voltage regulator, Hall-voltage generator, small-signal amplifier, chopper stabilization, Schmitt trigger, and a short-circuit protected open-collector output to sink up to 25 mA. A south pole of sufficient strength will turn the output on. A north pole is necessary to turn the output off. An on-board regulator permits operation with supply voltages of 4.2 to 24 volts.
Three package styles provide a magnetically optimized package for most applications. Package type LH is a modified SOT23W surface-mount package, LT is a miniature SOT89/TO-243AA transistor package for surface-mount applications; while UA is a three-lead ultra-mini-SIP for through-hole mounting. Each package type is also available in a lead (Pb) free version (suffix, –T) , with a 100% matte tin plated leadframe.
Functional Block Diagram
Package Type
RoHS Compliant
Temperature
Comments
A3280ELHLT
3-lead SOT
No
-40 °C to 85 °C
discontinued
A3280ELHLT-T
3-lead SOT
Yes
-40 °C to 85 °C
new
A3280ELT
3-lead SOT
No
-40 °C to 85 °C
discontinued
A3280ELT-T
3-lead SOT
Yes
-40 °C to 85 °C
new
A3280ELTTR
3-lead SOT
No
-40 °C to 85 °C
discontinued
A3280ELTTR-T
3-lead SOT
Yes
-40 °C to 85 °C
new
A3280EUA
3-pin SIP
No
-40 °C to 85 °C
discontinued
A3280EUA-T
3-pin SIP
Yes
-40 °C to 85 °C
new
A3280LLHLT
3-lead SOT
No
-40 °C to 150 °C
discontinued
A3280LLHLT-T
3-lead SOT
Yes
-40 °C to 150 °C
new
A3280LLT
3-lead SOT
No
-40 °C to 150 °C
discontinued
A3280LLT-T
3-lead SOT
Yes
-40 °C to 150 °C
new
A3280LLTTR
3-lead SOT
No
-40 °C to 150 °C
discontinued
A3280LLTTR-T
3-lead SOT
Yes
-40 °C to 150 °C
new
A3280LUA
3-pin SIP
No
-40 °C to 150 °C
discontinued
A3280LUA-T
3-pin SIP
Yes
-40 °C to 150 °C
new
A3281ELHLT
3-lead SOT
No
-40 °C to 85 °C
discontinued
A3281ELHLT-T
3-lead SOT
Yes
-40 °C to 85 °C
new
A3281ELT
3-lead SOT
No
-40 °C to 85 °C
discontinued
A3281ELT-T
3-lead SOT
Yes
-40 °C to 85 °C
discontinued
A3281ELTTR
3-lead SOT
No
-40 °C to 85 °C
discontinued
A3281ELTTR-T
3-lead SOT
Yes
-40 °C to 85 °C
discontinued
A3281EUA
3-pin SIP
No
-40 °C to 85 °C
discontinued
A3281EUA-T
3-pin SIP
Yes
-40 °C to 85 °C
new
A3281LLHLT
3-lead SOT
No
-40 °C to 150 °C
discontinued
A3281LLHLT-T
3-lead SOT
Yes
-40 °C to 150 °C
new
A3281LLT
3-lead SOT
No
-40 °C to 150 °C
discontinued
A3281LLT-T
3-lead SOT
Yes
-40 °C to 150 °C
new
A3281LLTTR
3-lead SOT
No
-40 °C to 150 °C
discontinued
A3281LLTTR-T
3-lead SOT
Yes
-40 °C to 150 °C
new
A3281LUA
3-pin SIP
No
-40 °C to 150 °C
discontinued
A3281LUA-T
3-pin SIP
Yes
-40 °C to 150 °C
new
A3283ELHLT
3-lead SOT
No
-40 °C to 85 °C
discontinued
A3283ELHLT-T
3-lead SOT
Yes
-40 °C to 85 °C
new
A3283ELT
3-lead SOT
No
-40 °C to 85 °C
discontinued
A3283ELT-T
3-lead SOT
Yes
-40 °C to 85 °C
discontinued
A3283ELTTR
3-lead SOT
No
-40 °C to 85 °C
discontinued
A3283ELTTR-T
3-lead SOT
Yes
-40 °C to 85 °C
new
A3283EUA
3-pin SIP
No
-40 °C to 85 °C
discontinued
A3283EUA-T
3-pin SIP
Yes
-40 °C to 85 °C
new
A3283LLHLT
3-lead SOT
No
-40 °C to 150 °C
discontinued
A3283LLHLT-T
3-lead SOT
Yes
-40 °C to 150 °C
new
A3283LLT
3-lead SOT
No
-40 °C to 150 °C
discontinued
A3283LLT-T
3-lead SOT
Yes
-40 °C to 150 °C
new
A3283LLTTR
3-lead SOT
No
-40 °C to 150 °C
discontinued
A3283LLTTR-T
3-lead SOT
Yes
-40 °C to 150 °C
new
A3283LUA
3-pin SIP
No
-40 °C to 150 °C
discontinued
A3283LUA-T
3-pin SIP
Yes
-40 °C to 150 °C
new
Contact person:
Frances New
Phone:+86-755-81832961
Fax:+86-755-83299282
Email:sumzi@sumzi.com
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