The SAS1064 A1 is a product from LSI Computer Systems. It is a single-chip quadrature decoder designed for incremental encoder applications. This chip is commonly used to interface with rotary or linear encoders to determine position, direction, and speed in various control systems.

Applications

• Robotics
• CNC machines
• Motor control systems
• Optical and magnetic encoders
• Positioning systems

Features

• Quadrature decoding with noise filtering
• Multiplication modes for higher resolution
• Up/Down counting mode
• Index pulse input
• Programmable digital noise filter

Benefits

• Accurate position and speed measurement
• Immunity to noise and signal jitter
• Increased resolution through multiplication
• Simplified interface to microcontrollers
• Reliable operation in industrial environments

Additional Details

The SAS1064 A1 typically provides quadrature decoding of signals from A and B channels of an incremental encoder. It generates digital outputs representing the direction and number of increments counted. The multiplication modes (x1, x2, x4) allow for increasing the resolution of the encoder signal, effectively multiplying the number of pulses per revolution or unit of length.

The index pulse input allows for resetting the counter to a known position. The programmable digital noise filter helps to eliminate spurious counts caused by noise or vibration. The chip is typically available in surface-mount packages for easy integration into electronic circuits. Detailed information, including pin assignments, electrical characteristics, and timing diagrams, can be found in the LSI Computer Systems datasheet for the SAS1064 A1.