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The first video ADC chip
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30-04-2019, 05:52 PM
Not just the ADCs but also the brickwall filters from Matthey or BAL. The filters were probably £100 each back then. They had to be flat within 0.1dB or so to over 5MHz and give lots of attenuation at 6.75MHz and above. This meant 5 or 7 pole elliptic filters with group delay compensation so as not to muck up the phase response.
www.borinsky.co.uk Jeffrey Borinsky www.becg.tv
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| Messages In This Thread |
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The first video ADC chip - by ppppenguin - 29-04-2019, 04:15 PM
RE: The first video ADC chip - by ppppenguin - 29-04-2019, 04:58 PM
RE: The first video ADC chip - by beamcurrent - 30-04-2019, 05:39 PM
RE: The first video ADC chip - by ppppenguin - 30-04-2019, 05:52 PM
RE: The first video ADC chip - by `FRANK.C - 30-04-2019, 10:36 PM
RE: The first video ADC chip - by ppppenguin - 01-05-2019, 06:21 AM
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