Very simple consumer electronics are sometimes fabricated on single-sided PCBs, keep-ing the raw board material inexpensive (FRC1 or FRC2) with thin copper cladding. These designs frequently include many jumper wires, simulating the circuit routing on a double-sided board.
This technique is only recommended for low-frequency circuitry. For reasons described below, this type of design is extremely susceptible to radiated noise. It is harder to design a board of this type, because of the many things can go wrong. Many complex designs have been successfully implemented with this technique, but they require a lot of forethought.
An example is a television set that puts all of the analog circuitry on a single-sided board at the bottom of the case, and uses the metalized CRT itself to shield the board from a separate digital tuning board near the top of the set. Be prepared to get creative if the design demands high volume, low cost PCBs. If a single-sided PCB is a requirement, remember the trace resistance! The op amp is not a 3-terminal device (inverting input, non-inverting input, and output). It is a 7-terminal device.
