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MC33078YDT
Low-noise op-amps
November 2012 Doc ID 2177 Rev 6 1/15
MC33078Low noise dual operational amplifier
Datasheet − production data
Features Low voltage noise: 4.5 nV/√ Hz High gain bandwidth product: 15 MHz High slew rate: 7 V/µs Low distortion: 0.002% Large output voltage swing: +14.3V/ -14.6V Low input offset voltage Excellent frequency stability ESD protection 2kV Macromodel included in this specification
DescriptionThe MC33078 device is a monolithic dual
operational amplifier particularly well suited for
audio applications.
It offers low voltage noise (4.5 nV/√Hz) and high
frequency performance (15 MHz gain bandwidth
product, 7 V/µs slew rate).
In addition, the MC33078 device has a very low
distortion (0.002%) and excellent phase/gain
margins.
The output stage allows a large output voltage
swing and symmetrical source and sink currents.
Absolute maximum ratings and operating conditions MC330782/15 Doc ID 2177 Rev 6
Absolute maximum ratings and operating conditions
Table 1. Absolute maximum ratings (AMR) Either or both input voltages must not exceed the magnitude of VCC+ or VCC-. Short-circuits can cause excessive heating and destructive dissipation. Rth are typical values. Human body model: A 100 pF capacitor is charged to the specified voltage, then discharged through
a 1.5 kΩ resistor between two pins of the device. This is done for all couples of connected pin combinations
while the other pins are floating. Machine model: A 200 pF capacitor is charged to the specified voltage, then discharged directly between
two pins of the device with no external series resistor (internal resistor < 5 Ω). This is done for all couples of
connected pin combinations while the other pins are floating. Charged device model: all pins and the package are charged together to the specified voltage and then
discharged directly to ground through only one pin. This is done for all pins.
Table 2. Operating conditions
MC33078 Schematic diagramDoc ID 2177 Rev 6 3/15
2 Schematic diagram
Figure 1. Schematic diagram (1/2 MC33078)
Electrical characteristics MC330784/15 Doc ID 2177 Rev 6
3 Electrical characteristics Table 3. VCC+ = +15 V, VCC- = -15 V, Tamb = 25 °C (unless otherwise specified)
MC33078 Electrical characteristics
Doc ID 2177 Rev 6 5/15
Table 3. VCC+ = +15 V, VCC- = -15 V, Tamb = 25 °C (unless otherwise specified) (continued)
Electrical characteristics MC33078
6/15 Doc ID 2177 Rev 6
Figure 2. Total supply current vs. supply
voltage
Figure 3. Output voltage vs. supply voltage
Figure 4. Equivalent input noise voltage
vs. frequency
Figure 5. Output short-circuit current
vs. output voltage
Figure 6. Output voltage vs. supply voltage id = ±1 V, RL = 2 kΩ)
Figure 7. THD + noise vs. frequency
MC33078 Electrical characteristics
Doc ID 2177 Rev 6 7/15
Figure 8. Voltage gain and phase
vs. frequency
Figure 9. THD noise vs. Vout
Macromodel MC33078
8/15 Doc ID 2177 Rev 6
4 Macromodel
4.1 Important note concerning this macromodel
Please consider the following remarks before using this macromodel. All models are a trade-off between accuracy and complexity (i.e. simulation time). Macromodels are not a substitute to breadboarding; rather, they confirm the validity of
a design approach and help to select surrounding component values. A macromodel emulates the nominal performance of a typical device within specified
operating conditions (temperature, supply voltage, for example). Thus the
macromodel is often not as exhaustive as the datasheet, its purpose is to illustrate the
main parameters of the product.
Data derived from macromodels used outside of the specified conditions (VCC, temperature,
for example) or even worse, outside of the device operating conditions (VCC, Vicm, for
example), is not reliable in any way.
Section 4.2 provides the electrical characteristics resulting from the use of this macromodel.
4.2 Electrical characteristics from macromodelization
Table 4. Electrical characteristics resulting from macromodel simulation
at VCC+ = +15 V , VCC- = -15 V, Tamb = 25 °C (unless otherwise specified)
