Hi everyone, I am in a bit of a bind. We are using an Accelerometer, 0-2000G from TI Connectivity. It is an analog sensor, 3.3 V supply voltage.
The sampling rate, through ADC is too slow for our application. We are able to get 10,000 samples per second. However, we need 20,000 or greater sampling rate.
As for the application, we do not need to record or write values. In fact, the output of the accelerometer is only important once a set threshold value is reached (its used as an impact counter). For example, 1000G~2.2V… when 2.2 volts is seen, digital ON signal needs to be recorded.
Since its a simple application, I was hoping to bypass ADC completely. I was hoping to take the signal from the accelerometer and put it through some kind of adjustable switch. Once the switch is calibrated to…say 2.2V…it would then be digitally read (with a 48mhz processor) and every time the system hits 1000G, it would digitally trigger and allow the circuit to detect it with a very high speed. Is there such thing as the switch that I am describing?
Thanks for your help!