Hello everyone,i have a question about my project.Im doing a digital frequency meter with a schmitt trigger with100mV hysteresis,and i need a DC preamp for it to boost the low frequencies signals 5 times.Since its my first time doing something like that,are there any specific parameters i should look for and whats the best solution a preamp with OPAMP(like OP27) or with transistors.
I know its possibly a stupid question,but i dont find much information online for what i specifically need.
Thank you in advance.