OPA2350

The OPA350 series of rail-to-rail CMOS operational amplifiers are optimized for low-voltage single-supply operation. Rail-to-rail inputs and outputs, low noise (5nV/√Hz) and high-speed operation (38MHz, 22V/μs) make the op amp ideally suited for driving analog-to-digital (A/D) converters. It is also suitable for mobile phone power amplifier (PA) control loops and video processing (75Ω drive capability) as well as audio and general applications. Single-, dual- and quad-channel versions have identical specifications for maximum design flexibility.
The OPA350 series operates from a single supply as low as 2.5V, with an input common-mode voltage range from 300mV below ground to 300mV above the positive supply. With a 10kΩ load, the output voltage can swing to within 10mV of the supply rail. Dual- and quad-channel designs feature completely independent circuitry to minimize crosstalk and completely eliminate interactions.
This acquisition board can amplify the weak electrical signal with an adjustable factor, send it to the microcontroller for processing, and then make judgments on the external situation and perform corresponding actions.