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  3. Problems with AHDL Block Rand Bit Stream in Cadence Virtuoso...

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Problems with AHDL Block Rand Bit Stream in Cadence Virtuoso using Spectre RF

growingmind
growingmind over 6 years ago

Hello,

I want to measure the Eye Diagram of a Broadband Bipolar amplifier I designed in Cadence Virtuoso using SpectreRF.

When I use Rand Bit Stream - i get a lot of errors and the transistor breaking down at BE junction.

I do not get this error with MOS amplifiers.

What can I do - how can I measure the eye diagram of bipolar transistor properly with rand bit stream ?

Thanks.

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  • Andrew Beckett
    Andrew Beckett over 6 years ago

    I can't think of any good reason why this would happen unless the signal levels are too high (or low) for the circuit you've designed. Without more info it's hard to comment, so perhaps you should contact customer support.

    I see you posted the same question on the Designer's Guide forums too.

    Regards,

    Andrew.

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