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IP200 Datasheet(PDF) 10 Page - List of Unclassifed Manufacturers |
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IP200 Datasheet(HTML) 10 Page - List of Unclassifed Manufacturers |
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10 / 30 page ![]() Phone: +49 371 33 77 - 0 Fax:: +49 371 33 77 272 Internet: www.gemac-chemnitz.de Email: interpolation@gemac-chemnitz.de sales@gemac-chemnitz.de GEMAC Gesellschaft für Mikroe lektronikanwendung Chemnitz mbH Zwickauer Straße 227 D-09116 Chemnitz, Germany Date: 20.04.04 Page 10 of 30 Title: Data Sheet GC-IP200 Name of Document: 43500-DB-2-1-E-IP200.pdf Clock Frequency Examples fOSC = 40MHz fmaxCNT = 400kHz IR IT tpp fmax IR IT tpp fmax IR IT tpp fmax IR IT tpp fmax 1 31ns 180k 1 31ns 225k 1 31ns 360k 1 31ns 400k 2 62ns 90k 2 62ns 113k 2 62ns 180k 2 62ns 225k 4 125ns 45k 4 125ns 56k 4 125ns 90k 4 125ns 113k 8 250ns 22.5k 8 250ns 28k 8 250ns 45k 8 250ns 56k 16 500ns 11.3k 16 500ns 14k 16 500ns 22.5k 16 500ns 28k 32 1µs 5.6k 32 1µs 7k 32 1µs 11.3k 32 1µs 14k 64 2µs 2.8k 64 2µs 3.5k 64 2µs 5.6k 64 2µs 7k 200 128 4µs 1.4k 160 128 4µs 1.8k 100 128 4µs 2.8k 80 128 4µs 3.5k 1 31ns 400k 1 31ns 400k 1 31ns 400k 1 31ns 400k 2 62ns 360k 2 62ns 400k 2 62ns 400k 2 62ns 400k 4 125ns 180k 4 125ns 225k 4 125ns 360k 4 125ns 400k 8 250ns 90k 8 250ns 113k 8 250ns 180k 8 250ns 225k 16 500ns 45k 16 500ns 56k 16 500ns 90k 16 500ns 113k 32 1µs 22.5k 32 1µs 28k 32 1µs 45k 32 1µs 56k 64 2µs 11.3k 64 2µs 14k 64 2µs 22.5k 64 2µs 28k 50 128 4µs 5.6k 40 128 4µs 7k 25 128 4µs 11.3k 20 128 4µs 14k marked cells: Error FAST1 appears on speed overflow normal cells: Error FAST2 appears on speed overflow 4.5 Glitch Filter In order to avoid permanent toggling of the downstream counters as a result of analogue noise of the input signals while the measuring system is in standstill, a digital filter can be optionally activated for the square- wave outputs (pin / bit GFE). In such a case, the minimum edge distance at the output (tpp) is then automatically set at 2048 / fosc while the measuring system is in standstill or at smaller input frequencies. Note that in the switching range to the automatic activation / deactivation of this filter, the A/B output signals are not speed-proportional in each case! |
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