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From: | Tomas D. |
Subject: | Re: [Discuss-gnuradio] Hardware extending |
Date: | Mon, 25 Jul 2011 21:49:41 +0300 |
User-agent: | Mozilla/5.0 (Windows NT 5.1; rv:5.0) Gecko/20110624 Thunderbird/5.0 |
On 2011.07.25 10:48, Farhad Abdolian wrote:
Hello, if we are talking about a board, that potentially could be used by more than 10-20 persons, then yes, we have to consider using proper hardware. Let's have a look to the minimum requirements that we have in USRP2: ADC: 2 channels, 100MSPS, 14bits, SFDR 88dB DAC: 2 channels, 100MSPS, 16bits, SFDR 80+ dB Now devices on USRP2 are: ADC: Linear Tech. LTC2284 (2ch, 105MSPS, 14bit) Price @ Digikey: 147.6USD Price @ Farnell: ~200USD This one is barely on stock. DAC: AD AD9777 (2ch, 160MSPS interpolating up to 400MSPS, 16bit, TxDAC+) Price @ Digikey: 59.87USD Price @ Farnell: 82.5USD Now lets consider other choices: ADC: TI ADS62P48 (2ch, 210MSPS, SFDR 85dB) - price @ Digikey: 176.18USD ADC: TI ADS6244 (2ch, 105MSPS, SFDR 81dB) - price @ Digikey: 88.7USD ADC: TI ADS6245 (2ch, 125MSPS, SFDR 83dB) - price @ Digikey 110.25USD ADC: TI ADS4246 (2ch, 160MSPS, SFDR 87dB) - price @ Digikey 116.25USD And TI are previewing ADS4249 (2ch, 250MSPS, SFDR 80dB) - price N/A Prices are in quantities of single chip only! I've not checked AD, Linear, etc. The question is: do we stick to the current hardware or search for a new one? P.S. I am not sure if I am correct using USRP2 basis. Maybe I should switch over to N210 datasheet? Sincerely, Tomas D. |
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