I like the density of the ADG725/726/731/732 muxes but the +5V power supply is a limitation for my application. Do you have a similar density parts but using higher supplies such as +/-10V or +/-15V?
We dont have +/-10V Differential 16:1 or 32:1 mux.
The highest channel count +/-10V or +/-15V mux we have is Diff 8:1 or 16:1 mux. These have parallel interface.
Low Ron option is the ADG1406/7 http://www.analog.com/en/switchesmultiplexers/multiplexers-muxes/adg1406/products/product.html
Low leakage, low capaciatance and low charge injection option is the ADG1206/7. http://www.analog.com/en/switchesmultiplexers/multiplexers-muxes/adg1206/products/product.html
Other Diff 8:1 or 16:1 mux.options can be seen in selection table here; http://www.analog.com/ps/psthandler.aspx?pstid=10100&la=en
In terms of SPI interface, we have low Ron 8:1 mux, ADG1438.
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