A3280(2010) 查看數據表（PDF） - Allegro MicroSystems
零件编号
产品描述 (功能)
生产厂家
A3280 Datasheet PDF : 13 Pages
| |||
A3280, A3281, and A3283
Chopper-Stabilized, Precision
Hall-Effect Latches
Features and Benefits
▪ 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
Packages:
Package LH
Package LT
Not to scale
Package UA
Description
The A3280, A3281, and A3283 Hall-effect latches
are extremely temperature-stable and stress-resistant
sensor ICs 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 lead (Pb) free (suffix, –T), with 100% matte tin
leadframe plating.
Functional Block Diagram
27609.20-DS, Rev. M
Share Link: 