A3163

• Internal Current Regulator for 2-Wire Operation
• Output Slew Rate Controlled
• 3.5 V to 24 V Operation ... Needs Only An Unregulated Supply
• Reverse Battery Protection
• Excellent Temperature Stability
• Activate with Small, Commercially Available Permanent Magnets
• Small Size
• Solid-State Reliability ... No Moving Parts
• Resistant to Physical Stress

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 A3163ELT and A3163EUA are identical except for package.

Each device includes a voltage regulator for operation with supply voltages of 3.5 to 24 volts, reverse-battery protection diode, quadratic Hall-voltage generator for low offset, temperature compensation circuitry, small-signal amplifier, Schmitt trigger, and a constant-current open-collector output, wired internally for true 2-wire operation. Noise radiation is limited by control of the output current slew rate.