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MC33078
Low noise dual operational amplifier
Features

Low voltage noise: 4.5 nV/Hz High gain bandwidth product: 15 MHz High slew rate: 7 V/s Low distortion: 0.002% Large output voltage swing: +14.3 V / -14.6 V Low input offset voltage Excellent frequency stability ESD protection 2 kV Macromodel included in this specification D SO-8 (Plastic micropackage) N DIP8 (Plastic package)
Description
The MC33078 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/s slew rate). In addition, the MC33078 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.
Pin connections (top view)
Output 1
Inverting input 1 Non-inverting input 1
1 2 3
+ +
8 7 6 5
VCC+
Output 2 Inverting input 2 Non-inverting input 2
-4 V CC
March 2008
Rev 5
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www.st.com 15
Absolute maximum ratings and operating conditions
MC33078
1
Absolute maximum ratings and operating conditions
Table 1.
Symbol VCC Vid Vi Supply voltage Differential input voltage - note Input voltage - see note 1 Output short circuit duration Tj Tstg Rthja Junction temperature Storage temperature Thermal resistance junction to ambient(2) (3) SO-8 DIP8 Thermal resistance junction to case(2) (3) SO-8 DIP8 HBM: human body model(4) ESD MM: machine model
(5) (1)
Absolute maximum ratings (AMR)
Parameter Value 18 or +36 30 15 Infinite +150 -65 to +150 125 85 40 41 2 200 1.5 Unit V V V s C C C/W
Rthjc
C/W kV V kV
CDM: charged device
model(6)
1. Either or both input voltages must not exceed the magnitude of VCC+ or VCC-. 2. Short-circuits can cause excessive heating and destructive dissipation. 3. Rth are typical values. 4. Human body model: A 100 pF capacitor is charged to the specified voltage, then discharged through a 1.5 k resistor between two pins of the device. This is done for all couples of connected pin combinations while the other pins are floating. 5. 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 ). This is done for all couples of connected pin combinations while the other pins are floating. 6. Charged device model: all pins and the package are charged together to the specified voltage and then discharged directly to the ground through only one pin. This is done for all pins.
Table 2.
Symbol VCC Toper
Operating conditions
Parameter Supply voltage Operating free-air temperature range Value 2.5 to 15 -40 to 105 Unit V C
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MC33078
Schematic diagram
2
Figure 1.
Schematic diagram
Schematic diagram (1/2 MC33078)
VCC
Output Inverting Input Non-inverting Input
VCC
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Electrical characteristics
MC33078
3
Table 3.
Symbol Vio DVio Iio Iib Vicm Avd
Electrical characteristics
VCC+ = +15V, VCC- = -15V, Tamb = 25C (unless otherwise specified)
Parameter Input offset voltage (Vo = 0V, Vic = 0V) Tmin Tamb Tmax Input offset voltage drift Vo = 0V, Vic = 0V, Tmin Tamb Tmax Input offset current (Vo = 0V, Vic = 0V) Tmin Tamb Tmax Input bias current (Vo = 0V, Vic = 0V) Tmin Tamb Tmax Input common mode voltage range (Vio = 5mV, Vo = 0V) Large signal voltage gain (RL = 2k Vo = 10V) , Tmin Tamb Tmax Output voltage swing (Vid = 1V) RL = 600 RL = 600 RL = 2.0k RL = 2.0k RL = 10k RL = 10k Common-mode rejection ratio (Vic = 13V) Supply voltage rejection ratio VCC+ / VCC- = +15V / -15V to +5V / -5V Output short-circuit current (Vid = 1V, output to ground) Source Sink Supply current (Vo = 0V, all amplifiers) Tmin Tamb Tmax Slew rate , Vi = -10V to +10V, RL = 2k CL = 100pF, AV = +1 Gain bandwidth product RL = 2k CL = 100pF, f = 100kHz , Unity gain bandwidth (Open loop) Gain margin (RL = 2k), CL = 0pF CL = 100pF Phase margin (RL = 2k), CL = 0pF CL = 100pF Equivalent input noise voltage RS = 100 f = 1kHz , Equivalent input noise current (f = 1kHz) 5 10 13 90 85 Min. Typ. 0.15 Max. 2 3 Unit mV V/C 150 175 750 800 nA nA V dB
2 10 250 14 100
Vopp
13.2 13.5 80 80
12.2 -12.7 14 -14.2 14.3 -14.6 100 105
V -13.2 -14 dB dB
CMR SVR
Io
15 20
29 37 4 5 5.5
mA
ICC SR GBP B Am m en in
mA V/s MHz MHz dB Degrees nV/Hz pA/Hz
7 15 9 -11 -6 55 30 4.5 0.5
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MC33078 Table 3.
Symbol THD VO1/VO2 FPB Zo Ri Ci
Electrical characteristics VCC+ = +15V, VCC- = -15V, Tamb = 25C (unless otherwise specified) (continued)
Parameter Total harmonic distortion , RL = 2k f = 20Hz to 20kHz, Vo = 3Vrms, AV = +1 Channel separation f = 20Hz to 20kHz Full power bandwidth Vo = 27Vpp, RL = 2k THD 1% , Output impedance Vo = 0V, f = 9MHz Input resistance Vic = 0V Input capacitance Vic = 0V Min. Typ. 0.002 120 120 37 175 12 Max. Unit % dB kHz k pF
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Electrical characteristics
MC33078
Figure 2.
Total supply current vs. supply voltage
Figure 3.
Output voltage vs. supply voltage
5 4.5 Total Supply Current (mA) 4 3.5
Output Voltage (V) 10 15
3 2.5 2 1.5 1 0.5 0 0 5 10 15 20 25 30
5
0
-5
-10
-15 0 5 10 15 Supply Voltage (V)
Supply Voltage (V)
Figure 4.
Equivalent input noise voltage vs. frequency
Figure 5.
Output short circuit current vs. output voltage
50
Output Short Circuit Current (mA)
40 30 20 10 0 -10 -20 -30 -40 0 10 20 30 Output Voltage (V)
VCC = 15V, G = 100 Rs = 100, Tamb = 25C
VCC = 0/30V Tamb = 25C
Figure 6.
15
Output voltage vs. supply voltage
Figure 7.
THD + noise vs. frequency
1
10 Output Voltage (V) 5 0
THD+Noise (%)
0.1
Vid = 1V RL = 2k
RL = 2k, Vo = 3Vrms VCC = 15V, Av = 1
-5
0.01
-10
0.001
-15 0 5 10 15 Supply Voltage (V)
0.01
0.1
1 Frequency (kHz)
10
100
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MC33078
Electrical characteristics
Figure 8.
Voltage gain and phase vs. frequency
180
Figure 9.
THD noise vs. Vout
50 40
1.000
120 30
THD+Noise (%)
Gain (dB)
20 10 0
60
0
Phase (Deg)
0.100
RL = 2k, f = 1kHz VCC = 15V, Av = 10
0.010
-10 -20
RL = 2k, CL = 100pF VCC = 15V, G = -100
-60
0.001
-30 10 100 1000 Frequency (kHz) 10000 -120 100000
1
2
3
4
5
6
7
8
9
10
Vout (Vrms)
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Macromodel
MC33078
4
4.1
Macromodel
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+ = +15V, VCC- = -15V, Tamb = 25C (unless otherwise specified)
Conditions Value 0 RL = 2k, VO = 10V No load, per operator Vio = 5mV, VO = 0V RL = 2k VO = 0V VO = 0V RL = 2k CL = 100pF , , RL = 10k CL = 100pF, AV = +1 , RL = 2k CL = 0pF 100 2 28 28.2 37 29 15 7 55 Unit mV dB mA V V mA mA MHz V/s Degrees
Symbol Vio AVD ICC Vicm Vopp Isink Isource GBP SR m
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MC33078
Macromodel
4.3
Macromodel code
** Standard Linear Ics Macromodels, 1993. ** CONNECTIONS : * 1 INVERTING INPUT * 2 NON-INVERTING INPUT * 3 OUTPUT * 4 POSITIVE POWER SUPPLY * 5 NEGATIVE POWER SUPPLY .SUBCKT MC33078 1 3 2 4 5 ******************************************************** .MODEL MDTH D IS=1E-8 KF=2.286238E-16 CJO=10F * INPUT STAGE CIP 2 5 1.200000E-11 CIN 1 5 1.200000E-11 EIP 10 5 2 5 1 EIN 16 5 1 5 1 RIP 10 11 2.363636E+00 RIN 15 16 2.363636E+00 RIS 11 15 1.224040E+01 DIP 11 12 MDTH 400E-12 DIN 15 14 MDTH 400E-12 VOFP 12 13 DC 0 VOFN 13 14 DC 0 IPOL 13 5 1.100000E-04 CPS 11 15 2.35E-09 DINN 17 13 MDTH 400E-12 VIN 17 5 1.000000e+00 DINR 15 18 MDTH 400E-12 VIP 4 18 1.000000E+00 FCP 4 5 VOFP 1.718182E+01 FCN 5 4 VOFN 1.718182E+01 FIBP 2 5 VOFN 4.545455E-03 FIBN 5 1 VOFP 4.545455E-03 * AMPLIFYING STAGE FIP 5 19 VOFP 9.545455E+02 FIN 5 19 VOFN 9.545455E+02 CC 19 29 1.500000E-08 HZTP 30 29 VOFP 1.523529E+02 HZTN 5 30 VOFN 1.523529E+02 DOPM 51 22 MDTH 400E-12 DONM 21 52 MDTH 400E-12 HOPM 22 28 VOUT 5.172414E+03 VIPM 28 4 1.500000E+02 HONM 21 27 VOUT 4.054054E+03 VINM 5 27 1.500000E+02 DBIDON1 19 53 MDTH 400E-12 V1 51 53 0.68 DBIDON2 54 19 MDTH 400E-12 V2 54 52 0.68 RG11 51 5 3.04E+05 RG12 51 4 3.04E+05
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Macromodel RG21 52 5 0.6072E+05 RG22 52 4 0.6072E+05 E1 50 40 51 0 1 E2 40 39 52 0 1 EDEC1 38 39 4 0 0.5 EDEC2 0 38 5 0 0.5 DOP 51 25 MDTH 400E-12 VOP 4 25 1.474575E+00 DON 24 52 MDTH 400E-12 VON 24 5 1.474575E+00 RAJUS 50 5 1E12 GCOMP 5 4 4 5 8.1566068E-04 RPM1 5 80 1E+06 RPM2 4 80 1E+06 GAVPH 5 82 50 80 3.26E-03 RAVPHGH 82 4 613 RAVPHGB 82 5 613 RAVPHDH 82 83 1000 RAVPHDB 82 84 1000 CAVPHH 4 83 0.159E-09 CAVPHB 5 84 0.159E-09 EOUT 26 23 82 5 1 VOUT 23 5 0 ROUT 26 3 4.780354E+01 COUT 3 5 1.000000E-12 .ENDS
MC33078
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MC33078
Package information
5
Package information
In order to meet environmental requirements, ST offers these devices in ECOPACK(R) packages. These packages have a lead-free second level interconnect. The category of second level interconnect is marked on the package and on the inner box label, in compliance with JEDEC Standard JESD97. The maximum ratings related to soldering conditions are also marked on the inner box label. ECOPACK is an ST trademark. ECOPACK specifications are available at: www.st.com.
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Package information
MC33078
5.1
DIP8 package information
Figure 10. DIP8 package mechanical drawing
Table 5.
DIP8 package mechanical data
Dimensions
Ref. Min. A A1 A2 b b2 c D E E1 e eA eB L 2.92 0.38 2.92 0.36 1.14 0.20 9.02 7.62 6.10
Millimeters Typ. Max. 5.33 0.015 3.30 0.46 1.52 0.25 9.27 7.87 6.35 2.54 7.62 10.92 3.30 3.81 0.115 4.95 0.56 1.78 0.36 10.16 8.26 7.11 0.115 0.014 0.045 0.008 0.355 0.300 0.240 Min.
Inches Typ. Max. 0.210
0.130 0.018 0.060 0.010 0.365 0.310 0.250 0.100 0.300
0.195 0.022 0.070 0.014 0.400 0.325 0.280
0.430 0.130 0.150
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MC33078
Package information
5.2
SO-8 package information
Figure 11. SO-8 package mechanical drawing
Table 6.
SO-8 package mechanical data
Dimensions
Ref. Min. A A1 A2 b c D E E1 e h L k ccc 0.25 0.40 1 0.10 1.25 0.28 0.17 4.80 5.80 3.80
Millimeters Typ. Max. 1.75 0.25 0.004 0.049 0.48 0.23 4.90 6.00 3.90 1.27 0.50 1.27 8 0.10 0.010 0.016 1 5.00 6.20 4.00 0.011 0.007 0.189 0.228 0.150 Min.
Inches Typ. Max. 0.069 0.010
0.019 0.010 0.193 0.236 0.154 0.050 0.020 0.050 8 0.004 0.197 0.244 0.157
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Ordering information
MC33078
6
Ordering information
Table 7. Order codes
Temperature range Package DIP8 -40, +105C SO-8 SO-8 (Automotive grade) Packing Tube Tube or Tape & reel Tube or Tape & reel Marking MC33078N 33078 33078Y
Order code MC33078N MC33078D MC33078DT MC33078YD (1) MC33078YDT (1)
1. Qualification and characterization according to AEC Q100 and Q003 or equivalent, advanced screening according to AEC Q001 & Q 002 or equivalent are on-going.
7
Revision history
Table 8.
Date 10-Nov-2001 10-Jun-2005
Document revision history
Revision 1 2 Initial release. PPAP references inserted in the datasheet, see order codes table. The following changes were made in this revision: - Order codes table updated with complete list of markings and packages. - Reorganization of Chapter 4.3: Macromodel code on page 9. Corrected error in the first page title. Added Rth and ESD values in absolute maximum ratings table. Added footnote for automotive grade order codes in order codes table. Re-formatted document. Changes
30-Sep- 2005
3
16-Feb-2006
4
3-Mar-2008
5
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MC33078
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