The IIS Chip Gallery

SIMIX (1989)

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by

Stefan Menth, Ronald Straessler, Mirko Bulinsky

Main Details

Application	Industrial
Technology	2000
Manufacturer	VLSI Tech
Type	Semester Thesis
Package	DIP24
Dimensions	3200μm x 3200μm
Gates	1800
Voltage	5 V
Clock	1 MHz

Description

Steuersignal Mixer (SIMIX) is a chip that can combine two puls width modulated signals (x and y) to get a sum and difference signal. It allows the computation of

• s = (1-a)x + ay
• d = (1-a)x -ay + a
where a is a factor between 0 and 1. The chip was designed to aid the design of remote controlled planes and ships. The calculation is done through an ALU that operates on 9-bit fixpoint numbers. The signals are first converted from pulses to binary digits, then the sum and difference is calculated and new pulses are generated.

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