Speed up sample rate ADC (ADS1115) with a EasyMCP library

[Jur-I2C]

Hi,
Last day I connected an ADC converter (ADS1115) to an MCP2221 breakout board. I want to read out one channel of the ADC with a 16 bit resolution. I found some nice ADS 1115 libraries and I could write a python program which grabs the data of channel A0. So far so good. However my datarate is only 33Hz. (I get 33 samples per second)

I analyzed the SDA signal (yellow line) and SDL signal (purple line) with a scope when it sends data to the laptop :

To my surprise there is a lot of space between the information packets. (6 DIV = 6 miliseconds). Is there a way to get those bits closer together ? This will increase the datarate. Or is this caused by the limited speed of the USB port (max 500 Hz according the info on github) ? I do know that the data is sent in chunks of 60 bytes in the EasyMCP2221 library while in my case I need a max. of 4 bytes. Is it an option to set the package size for 64 to 8 bytes ?

Does anyone a good idea how to increase the data rate ?

[electronicayciencia]

It is a limitation of all USB to I2C chips. See I2C speed limit and Internal details.

Using continuous reading you could speed it up until 84 sps ADS_continuous.py.