Looking for 24bit ADCs with multiplexer

Yoon Hee Jung,


Since there are plenty of differences between these devices, it usually helps to have as much information as possible to help decide on a data converter.

The most important considerations would be what sort of data rate do you need? Do you need the data to be single cycle settling, or can there be some latency in the result? Do you really need a 24-bit data converter, or is 16-bits sufficient? What kind of communications do you need? Does it matter if the device uses I2C or SPI? Do you need some sort of PGA gain in the measurement?

You mention that you need an input range of -5V to +5V. You should note that most of our devices are operate on a 0V to 5V supply (or -2.5V to +2.5V supply) and the inputs likely will not operate outside this supply range. A -5V measurement comes with a fully differential input where the positive input is at 0V and the negative input is at +5V (giving and input of -5V).

Finally it might help to draw a quick schematic of what the system you expect to put together and we could discuss ADC options.


Joseph Wu