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Re: [Discuss-gnuradio] Schematics for tvrx frontend?

From: Marcus Leech
Subject: Re: [Discuss-gnuradio] Schematics for tvrx frontend?
Date: Mon, 18 Apr 2005 14:13:10 -0400
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Given also that the MT4937 is a cable-modem thingy, the analog outputs would pretty-much
 be *designed* to feed a high-speed A/D directly.

Matt Ettus wrote:

I was really surprised that there basically is no circuitry (like
opamp-based impedance matching) between the tuners' output and the ADC.

The ADC is a high impedance input, so you essentially feed it with a voltage. Its also a pretyt low frequency at that point so you don't care about
reflection on the very short traces.

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