Programmable Interpolator IC from iC-Haus
October 22, 2008
The iC-TW4 from iC-Haus GmbH, Bodenheim, Germany, is an integrated sine-to-digital converter for evaluating magnetic or optical linear and angle sensors. Two setup pins determine the chip function, signal gain, and rate of interpolation with a range of x2 to x64. The sine/cosine sensor signal can be divided up into 256 angle steps and output as an encoder quadrature signal via RS-422 drivers. The IC combines signal gain, conditioning, A/D conversion, and serial line drivers in a 4 mm by 4 mm package. Front-end instrumentation amplifiers permit referenced and differential input signals. Other features include automatic offset compensation and encoder quadrature output with A, B, and AND-gated zero signals.
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