A Single-Supply Op-Amp Circuit Collection.pdf

Application Report
SLOA058– November 2000
A Single-Supply Op-Amp Circuit Collection
Bruce Carter Op-Amp Applications, High Performance Linear Products
One of the biggest problems for designers of op-amp circuitry arises when the circuit must
be operated from a single supply, rather than ±15 V. This application note provides
working circuit examples.
Contents
1 Introduction ................................................................................................................................... 3
Split Supply vs Single Supply.................................................................................................... 3
Virtual Ground........................................................................................................................... 4
AC-Coupling ............................................................................................................................. 4
Op-Amp Stages ...................................................................................................... 5
Selecting Resistor and Capacitor Values .................................................................................. 5
2 Basic Circuits ................................................................................................................................ 5
Gain.......................................................................................................................................... 5
Attenuation ............................................................................................................................... 6
Summing .................................................................................................................................. 9
Difference Amplifier .................................................................................................................. 9
Simulated Inductor....................