You're looking for information on "Linear Integrated Circuits and Applications" by U.A. Bakshi, specifically the top or most popular resources related to this topic. Here's what I found:
- Output Formula:
$$V_o = -R_f \left( \fracV_1R_1 + \fracV_2R_2 + \fracV_3R_3 \right)$$
- If all resistors are equal ($R_1 = R_2 = R_3 = R$), then $V_o = -\fracR_fR(V_1 + V_2 + V_3)$.
If you're looking for similar resources, here are some alternatives:
2. Subtractor (Difference Amplifier)
Amplifies the difference between two input voltages.
- Formula: $\textResolution = \fracV_ref2^n$ (where n is the number of bits).
- Point-wise explanation: Perfect for making revision notes.
- Numerical problems: Every chapter ends with solved university problems. This is the "Top" reason students want the PDF—to get the solved examples.
- Simplified block diagrams: He reduces complex internal schematics (like the inside of a 741 or 555) into easy-to-draw diagrams.