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Quad and Octal Equivalents with sub 10nV/rtHz or similar spectral noise density...

Question asked by mwfortner on Jun 12, 2013
Latest reply on Jun 13, 2013 by mwfortner

Team,

 

I have a medical customer that loves the noise performance of the AD5780.

 

However, they require 8 channels and are looking for Quad and Octal Equivalents with sub 10nV/rtHz or similar spectral noise density.

 

I have found several single channel voltage output/serial input DACs similar to the AD5780 with sub 10nV/rtHz spectral noise density, but no quads/octals at this point.

 

Here’s a couple I found with excellent specs and high channel count:

 

AD5664:  2.7 V to 5.5 V, 450 µA, Rail-to-Rail Output, Quad, 16-Bit nanoDAC®
http://www.analog.com/en/digital-to-analog-converters/da-converters/ad5664/products/product.html

 

AD5668:  Octal, 16-Bit, SPI Voltage Output denseDAC with 5 PPM/°C On-Chip Reference
http://www.analog.com/en/digital-to-analog-converters/da-converters/ad5668/products/product.html

 

However, the nanoDAC and denseDAC families tend to be more in the 120nV/rtHz spectral noise density range.

 

Am I overlooking a part with higher channel (2 or more) count and similar noise performance to the AD5780?

 

Thanks in advance for your help.

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