Description
The ELM402 is an 8 pin integrated circuit that is used to convert the signals from a rotary encoder
into a series of up and down output pulses. The low power CMOS technology used ensures that only a very small current is required over the entire 2.0 to 5.5 volt operating range.

Features
• Low power CMOS design
• Wide supply range – 2.0 to 5.5 volts
• Complete debouncing of the encoder inputs
• No external filtering needed
• 2x decoding
• Startup delay timer
• High current drive outputs

Applications
• Digital audio potentiometer controls
• Variable voltage or temperature circuits
• Positioning controls
• Tuning circuits