A3161ELT

A3161ELT Manufacturer

A3161ELT Description

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A3161ELT Datasheet (PDF)

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A3161ELT Features

• Internal Current Regulator for 2-Wire Operation
• Output Slew Rate Controlled
• 3.5 V to 25 V Operation ... Needs Only An Unregulated Supply
• Reverse Battery Protection
• Excellent Temp. Stability
• Activate with Small, Commercially Available Permanent Magnets
• Small Size
• Solid-State Reliability ... No Moving Parts
• Resistant to Physical Stress

A3161ELT Description

These parts are in production but NOT FOR NEW DESIGN. This classification is used to restrict business to only current customer applications. Samples are not available. Obsolescence in the near future is probable. For new customers or new applications, please refer to Allegro 1140.

This Hall-effect switch is a monolithic integrated circuit designed to operate continuously over extended temperatures to +85°C. The unipolar switching characteristic makes this device ideal for use with a simple bar or rod magnet. The A3161ELT and A3161EUA are identical except for package.

Each device includes a voltage regulator for operation with supply voltages of 3.5 to 25 volts, reverse battery protection diode, quadratic Hall-voltage generator, temperature compensation circuitry, small-signal amplifier, Schmitt trigger, and a constant-current open-collector output. Noise radiation is limited by control of the output current slew rate.

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