The schematic in Figure 1 is a common summing amplifier with multiple inputs and one single-ended output. It is a variation of a standard inverting amplifier. Point X is a virtual ground and is ...

When you need to use multiple sensors with analog outputs in a measurement system, each sensor may respond differently to a known stimulus. As a result, you'll probably need to calibrate the system.

The following is Chapter 21 “Composite Amplifiers” from Linear Technology's Volume II book entitled, “Analog Circuit Design–Immersion in the Black Art of analog design” by Bob Dobkin and the late-Jim ...