Here are some list of ADC that could be suitable for your application. You may also wanted to check the ADI website and do a parametric search and put in parameters on the ADC that you wanted to search. Please refer to the link below.
I have a question about AD7468 SAR ADC.The AD7648 has a specification about fclk as followings. (tabel-4 of the datasheet)
Parameter Limit at TMIN,TMAX Unit Description fSCLK 3.4 MHz max Mark/space ratio for the SCLK input is 40/60 to 60/40.
I have a customer that needs to digitize the output of a strain gauge. Their power source can vary from 1.6 to 3.6V and is capable of supplying no more than 200 uA. Ideally, they want to use a differential input A/D and want a SPI output. Sample rate…