The CO324 is monolithic IC with four built-in operational amplifiers featuring internal phase compensation.
Either a dual or single power supply can be driven, and these products can be driven by a digital system 5V single power supply. These products can be used in a wide range of administrative and industrial applications, including transducer amplifiers and DC amplifiers.
   
Features
1) Wide range of operating power supply voltages and
    single power supply drive enabled.
    (single power supply: 3 to 30V, dual power supply: ±
    1.5 to ± 15V)
2) Common-mode input voltage can be operated from
    the ground level.
3) Differential input voltage can be operated up to the
    power supply voltage level.
4) Low current dissipation. (IQ = 0.6mA)
5) Low offset voltage and offset current. (VIO = 2mV, IIO
    = 5nA typ.)
6) Four operational amplifiers with phase
    compensation are built into the DIP / SOP Pin 14.
7) Compatible with model 324 operational amplifiers of
    other manufacturers.
   
Applications
    Ground sensing type pre-amplifiers
    Active filters
    DC amplifiers
    Pulse generators.