ASIC- und Mikrosensoranwendung Chemnitz

Interpolation Circuit GC-IP200


The GC-IP200 interpolation IC has been designed for connection to incremental position and angular measurement systems with sineshaped output signals with a 90° phase shift. It can be operated at a large number of transducer systems working according to the most varied measuring principles. With a maximum interpolation rate of 200 the IC is capable to slit the input signal period into up to 200 segments. An internal counter provides a counting value which can be output via a serial or a parallel interface. Furthermore there is the possibility to output the data as a pair of square waves for processing externally. The GC-IP200 is ideal for single chip interpolation systems, micro-computer based measuring devices, as well as multi channel systems. Proprietary automatic gain and offset regulation, as well as the possibility of an analogue phase correction ensure a high measuring precision under industrial conditions. Two integrated two-level measuring value trigger and the additional parallel high speed output make the IC suitable for use in real-time applications.

Technical Data

Analogue Part

Analogue input

3 differential channels (sine, cosine, reference)
Voltage input 1VPP (differential)
Single-ended input 2,4VPP
Maximum input frequency 400kHz


Internal converter max. 1,25MS/s

Signal correction

AMAC-specific gain- and offset regulation
Phase correction static via external potentiometer

Digital Part

Interpolation rate

20, 25, 40, 50, 80, 100, 160, 200

Output signals

28-Bit counting value
90° phase offset square wave signals
Error signal

Possibilities of configuration

Configuration pins, serial interface (SPI)

Serial interface

For configuration and measuring value output
16 Bit synchronous / asynchronous mode
Not required for trivial systems

Parallel output

For measuring value output
16-Bit wide
Up to 40MBit/s


Glitch filter

Filter for suppressing the edge distance noise at low input frequencies

Interval time

Programmable for adjusting the IC to slower counters


Two level edge controlled measuring trigger

Error output

Programmable sensor failure response



10mm x 10mm x 1,4mm

* A complete and more detailed description of the technical specifications is available at the data sheet at


Info Sheet

Data Sheet

Ordering Information

Product Type


Item Number


Interpolation IC GC-IP200, TQFP 64