Mikko Helin MHELIN at tnclus.tele.nokia.fi
Thu Mar 20 17:50:17 CET 1997


       I think this information would be of some interest: ZETEX from UK
       have developed a field programmable analog device. It can be
       used to build VCOs, filters, multipliers etc. One could actually
       build a whole analog synth with these little devices by designing
       it with Windows software an programming chips thru PC's parallel
       printer port like any EEPROMS.

       The next text is from datasheets of TRACK020, which is the only device 
       they currently have. Look at www.zetex.com for more information.


       Issue 2 - December 1996 Provisional TRAC020


       The TRAC020 is the first universal Field
       Programmable Analog Device (FPAD) . This
       device provides a macro based solution to
       analog design problems. The device contains
       20 interconnected cells each of which can be
       digitally programmed to one of eight
       pre-defined functions.
       Configuration is readily achieved by the
       integration of the TRAC software, hardware
       and the device itself. The software enables the
       user to design and simulate the analog
       application and then send the data to the TRAC
       hardware to programme the device. The
       hardware is designed to facilitate the electrical
       evaluation of the design.


       Many analog applications including:-
       · Filters
       · Multipliers
       · VCOs
       · PLLs
       · Precision Voltage References
       · Automatic Gain Control
       · Frequency to Volts Conversion

       · User programmable
       · From design to silicon within the hour
       · A low risk and fast route from concept to
       · For maximum flexibility each cell I/O can
       be connected externally
       · The function of each cell can be digitally
       programmed for LOG, ALOG, AUX, NON
       RECTIFY and OFF
       · The device can be programmed with a
       standard eeprom for non-microprocessor
       applications or for microprocessor
       applications via the data bus
       · Device is offered in two package styles :
       - Small 36 pin SSOP package
       - production build 40 pin PDIP package
       - prototype build
       · The TRAC software and hardware fully integrates design, simulation and
       programming functions
       · For complex circuits the chips can be cascaded
       · The device is fully reconfigurable

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