iC-Haus GmbH recently announced their new 26-bit encoder signal processor iC- TW29 with integrated EEPROM is used for the evaluation of magnetic and optical sensors that generate sine and cosine signals. Just a push of a button is enough to set the required signal amplification and to correct signal errors, e.g. for the assembly of MR sensors or optical sine encoders. Then, a permanent auto-correction minimizes the angular error, so that the integrated RS422 output drivers provide optimal quadrature signals – with up to 262,144 pulses at processing times of either only 2.4 µs or 5 µs.
An innovation is the position correction integrated for the first time for the mechanical eccentricity error, an annoying problem caused by off-center optical graduations or magnetic pole wheels. The measuring accuracy can now be considerably improved, especially for the smallest incremental encoders – such as the reflective iC-PR2656 – but also for absolute encoders that use an additional data interface for multiturn information.
At the same time, the FlexCount interpolator core provides full flexibility of use: any input resolution, whether binary or decimal, can be converted into any output resolution, independently for ABZ, UVW, BiSS, or SPI.
also resolve magnetic sensors at the shaft end of servo
motors very finely, up to
bits and more. A battery-buffered
Hall multiturn encoder can optionally be added (demonstration at the exhibition
booth in hall H4A-136 at the SPS exhibition in Nuremberg).
Designed for a single-sided supply of 3.3 V, the iC-TW29 operates over an industrial operating temperature range of -40 to +125 °C. As for external circuitry, only a few components are required. For example, when used as an incremental encoder, a voltage regulator and a protective diode against reverse polarity are enough.
iC-TW29 is housed in a space-saving 32-pin QFN package which requires only 5×5 mm on the PCB. For sampling purposes, a PC operating program (GUI) and ready-to-use demo boards (which can also serve as programming adapters) are available.
For more info, visit: www.ichaus.de.