For most applications that very high gain - around 100000x - needs to be reduced to more stable and usable values. Besides the power pins, it has two differential inputs - a positive and a negative - and an output. LM358 Op Amp - Offset voltage adjustment breadboard setup But firstĪn operational amplifier, as the name suggests, is a purpose-built integrated circuit that amplifies, a lot. ![]() Fortunately this problem can be addressed with a voltage offset adjustment using an inexpensive operational amplifier, such as the LM358, and few resistors. That can be a challenge when measuring signals with values that can go below the ADC's ground point. ![]() ![]() One of the hardware limitations of the STM32 DSO is the input voltage range, which is limited between Vcc and GND.
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