Programmable integrated circuit GC-IP200

converteranaloginterpolation

The interpolation circuit GC-IP200 is intended for connection to incremental position and angle measuring systems with sinusoidal output signals phase-shifted by 90 °. The extremely high resolution is achieved with an interpolation rate of up to 200 times. The counter value is provided via the serial interface. At the same time, the output data can be output as square-wave pulses for external process processing. The GC-IP200 can be operated on a large number of encoder systems that work according to the most varied of measuring principles. Various interfaces and flexible configuration types enable use in single-chip interpolation systems, in μC-based measuring devices as well as in multi-channel systems. A patented gain and offset control as well as the possibility of a phase correction guarantee a high measurement accuracy under industrial conditions. Thanks to the integrated two-stage measured value trigger and the additional parallel data output, the GCIP200 is suitable for use in real-time applications. • Analoginput : 3 differential channels (sine, cosine, reference) Voltage input 1Vpp (differential) Single-ended input for 2.4Vpp maximum input frequency 400kHz • AD-converter : Internal converter max.1.25MS / s • Signalcorrection : Patented gain and offset control Static phase correction via external potentiometer • Interpolation rate : 200 / 160 / 100 / 80 / 50 / 40 / 25 / 20 • Output signals : 28 bit counter value 90° square wave sequences Error signal • Configuration options : Via configuration pins Via serial interface (SPI)