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From: "Thomas Magma"
Subject: High speed ADC evaluation
X-Newsreader: Microsoft Outlook Express 5.50.4133.2400
Date: Thu, 07 Nov 2002 03:56:33 GMT
NNTP-Posting-Date: Wed, 06 Nov 2002 20:56:33 MST
Organization: Shaw Residential Internet
We are doing some ADC development and have selected the Texas Instruments
TLV5535, 8 Bit, 35 MSPS ADC Single Channel to suit our needs. We have
purchased the eval kit TLV5535EVM to hopefully evaluate some sub-sampling
techniques and also evaluate the added noise of the device.
It appears that this eval kit is virtually useless because it uses the
TLV5535 to convert a signal to digital and then has a DAC to convert it back
to analog which you can then hook up to a spectrum analyzer and view the
spectrum. So you don't know which device is adding noise to the signal. The
DAC also has an unfiltered output.
I haven't spent any time playing with this eval kit yet but it doesn't seem
like I would be able to trust any of the results I get to properly evaluate
the performance of the TLV5535. And I don't know how this going to effect
our ability to evaluate sub-sampling techniques.
Anybody have any suggestions or comments?
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