7.3.1 Input Stage

The input stage features two Schmitt-triggers at the pins IN+ and IN– to reduce sensitivity to noise on the inputs. IN+ signal and the inverted IN– signal are both sent to an AND gate. IN+ is connected with a pull-down resistor while IN– is connected with a pull-up resistor to prevent unintended turn-on. The output of the driver will be high when input voltage goes above input thresholds and output goes low when input voltage is below input threshold mentioned in the electrical characteristics table. Both IN+ and IN– are single ended inputs, and these two pins cannot be used as a differential input pair. Parasitic elements become extremely important in high frequency designs and extreme care should be taken while laying out the printed circuit board to minimize these parasitic elements. The performance of the LMG1025-Q1 and the performance of the overall system gets affected by the layout and components being selected.