Using one op-amp and multiple relays Vs. Using multiple op-amps

[AliEmad2002]

It depends on the total cost and power consumption of the two solutions.

For example:

• A battery powered system better use the multiple op-amps solution, as they won't consume total power ass much as the relay multiplexer network .
• If using a high-end op amp that's by extension of a high price, the multiple relays solution is better, as duplicating the op-amp won't be cost efficient.