Rev 2
June 2005 1/12
12
MC33079
Low Noise Quad Operational Amplifier
■Low voltage noise: 4.5nV/√Hz
■High gain bandwidth product: 15MHz
■High slew rate: 7V/µs
■Low distortion: 0.002%
■Large output voltage swing: +14.3V/-14.6V
■Excellent frequency stability
■ESD protection 2kV
■Macromodel included in this specification
Description
The MC33079 is a monolithic quad operational
amplifier particularly well suited for audio
applications.
It offers low voltage noise (4.5nV/√Hz) and high
frequency performances (15MHz Gain Bandwidth
product, 7V/µs slew rate).
In addition the MC33079 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)
Order Codes
N
DIP14
(Plastic Package)
D
SO-14
(Plastic Micropackage)
Inverting Input 2
Non-inverting Input 2
Non-inverting Input 1
CC
V
-
CC
V
1
2
3
4
8
5
6
7
9
10
11
12
13
14
+
Output 3
Output 4
Non-inverting Input 4
Inverting Input 4
Non-inverting Input 3
Inverting Input 3
-
+
-
+
-
+
-
+
Output 1
Inverting Input 1
Output 2
Part Number Temperature Range Package Packaging Marking
MC33079N -40, +105°C DIP14 Tube
MC33079D/DT SO-14 Tube or Tape & Reel
MC33079YD/YDT -40, + 125°C SO14 (automotive grade level) Tube or Tape & Reel 33079Y
www.st.com
Absolute Maximum Ratings MC33079
2/12
1 Absolute Maximum Ratings
Table 1. Key parameters and their absolute maximum ratings
Symbol Parameter Value Unit
VCC Supply Voltage ±18 or +36 V
Vid Differential Input Voltage - note (1)
1. Either or both input voltages must not exceed the magnitude of Vcc+ or Vcc-.
±30 V
ViInput Voltage - see note 1 ±15 V
Output Short Circuit Duration Infinite s
Toper Operating Free-Air Temperature Range -40 to 105 °C
TjJunction Temperature +150 °C
Tstg Storage Temperature -65 to +150 °C
Ptot Maximum Power Dissipation - note (2)
2. Power dissipation must be considered to ensure maximum junction temperature (Tj) is not
exceeded.
500 mW
Table 2. Operating conditions
Symbol Parameter Value Unit
VCC Supply Voltage ±2.5 to ±15 V
MC33079 Schematic Diagram (1/4 MC33079)
3/12
2 Schematic Diagram (1/4 MC33079)
Figure 1. Typical application schematic
Inverting
Input
Non-inverting
Input
VCC
Output
VCC
ELECTRICAL CHARACTERISTICS MC33079
4/12
3 ELECTRICAL CHARACTERISTICS
Table 3. VCC+ = +15V, VCC- = -15V, Tamb = 25°C (unless otherwise specified)
Symbol Parameter Min. Typ. Max. Unit
Vio Input Offset Voltage (Vo = 0V, Vic = 0V)
Tmin. ≤ Tamb ≤ Tmax.
2.5
3.5 mV
DVio Input Offset Voltage Drift
Vo = 0V, Vic = 0V, Tmin. ≤ Tamb ≤ Tmax. 2µV/°C
Iio
Input Offset Current (Vo = 0V, Vic = 0V)
Tamb = +25°C
Tmin. ≤ Tamb ≤ Tmax.
10 150
175
nA
Iib
Input Bias Current (Vo = 0V, Vic = 0V)
Tamb = +25°C
Tmin. ≤ Tamb ≤ Tmax.
250 750
800
nA
Vicm Input Common Mode Voltage Range (∆Vio = 5mV, Vo = 0V) ±13 ±14 V
Avd
Large Signal Voltage Gain (RL = 2kΩ, Vo = ±10V)
Tamb = +25°C
Tmin. ≤ Tamb ≤ Tmax.
90
85
100 dB
±Vopp
Output Voltage Swing (Vid = ±1V)
RL = 600Ω
RL = 600Ω
RL = 2.0kΩ
RL = 2.0kΩ
RL = 10kΩ
RL = 10kΩ
13.2
13.5
12.2
-12.7
14
-14.2
14.3
-14.6
-13.2
-14
V
CMR Common-mode Rejection Ratio (Vic = ±13V) 80 100 dB
SVR Supply Voltage Rejection Ratio (VCC+ / VCC- = +15V / -15V to
+5V / -5V) 80 105 dB
Io
Output Short Circuit Current (Vid = ±1V, Output to Ground)
Source
Sink
15
20
29
27
mA
ICC
Supply Current (Vo = 0V, All amplifiers)
Tamb = +25°C
Tmin. ≤ Tamb ≤ Tmax.
810
12
mA
SR Slew Rate (Vi = -10V to +10V, RL = 2kΩ, CL = 100pF, AV =
+1) 57 V/µs
GBP Gain Bandwidth Product (RL = 2kΩ, CL = 100pF, f = 100kHz) 10 15 MHz
B Unity Gain Bandwidth (Open loop) 9 MHz
AmGain Margin (RL = 2kΩ)CL = 0pF
CL = 100pF
-11
-6 dB
MC33079 ELECTRICAL CHARACTERISTICS
5/12
φmPhase Margin (RL = 2kΩ), CL = 0pF
CL = 100pF
55
30 Degrees
enEquivalent Input Noise Voltage (RS = 100Ω, f = 1kHz) 4.5
inEquivalent Input Noise Current (f = 1kHz) 0.5
THD Total Harmonic Distortion (RL = 2kΩ, f = 20Hz to 20kHz,
Vo = 3Vrms, AV = +1) 0.002 %
VO1/VO2 Channel Separation (f = 20Hz to 20kHz) 120 dB
FPB Full Power Bandwidth (Vo = 27Vpp, RL = 2kΩ, THD ≤ 1%) 120 kHz
ZoOutput Impedance (Vo = 0V, f = 9MHz) 37 Ω
RiInput Resistance (Vic = 0V) 175 kΩ
CiInput Capacitance (Vic = 0V) 12 pF
Table 4. VCC+ = +15V, VCC- = -15V, Tamb = 25°C (unless otherwise specified)
Symbol Conditions Value Unit
Vio 0mV
Avd RL = 2kΩ, Vo = ±10V 100 dB
ICC No load, per operator 2 mA
Vicm ∆Vio = 5mV, VO = 0V 28 V
Vopp RL = 2kΩ28.2 V
Isink VO = 0V 37 mA
Isource VO = 0V 29 mA
GBP RL = 2kΩ, CL = 100pF 15 MHz
SR RL = 10kΩ, CL = 100pF, Av = +1 7V/µs
φmRL = 2kΩ, CL = 0pF 55 Degrees
Table 3. VCC+ = +15V, VCC- = -15V, Tamb = 25°C (unless otherwise specified)
Symbol Parameter Min. Typ. Max. Unit
nV
Hz
------------
pA
Hz
------------
ELECTRICAL CHARACTERISTICS MC33079
6/12
Figure 2. 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 Figure 7. THD + Noise vs. frequency
0
2
4
6
8
10
0 5 10 15 20 25 30
Supply Voltage (V)
Supply Current (mA)
-15
-10
-5
0
5
10
15
0 5 10 15
Supply Voltage (V)
Output Voltage (V)
Vid = ±1V
RL = 600Ω
0
2
4
6
8
10
0.01 0.1 1 10 100 1000
Frequency (kHz)
Equivalent Input Noise Voltage (nV/VHz)
VCC = ±15V, Av = 100
Rs = 100Ω, Tamb = 25°C
-40
-20
0
20
40
60
0 102030
Output Voltage (V)
Output Short Circuit Current (mA
)
VCC = 0/30V
Tamb = 25°C
-15
-10
-5
0
5
10
15
051015
Supply Voltage (V)
Output Voltage (V)
Vid = ±1V
RL = 2kΩ
0
0.005
0.01
0.01 0.1 1 10 100
Frequency (kHz)
THD+Noise (%)
RL = 2kΩ, Vo = 3Vrms
VCC = ±15V gain = 10
gain = 1
MC33079 ELECTRICAL CHARACTERISTICS
7/12
Figure 8. Voltage gain and phase vs. frequency Figure 9. Total harmonic distortion vs. output
voltage
-40
-20
0
20
40
60
10 100 1000 10000 100000
Frequency (kHz)
Gain (dB)
-120
-60
0
60
120
180
Phase (Deg)
gain
phase
RL = 2kΩ, CL = 100pF
VCC = ±15V, Av = -100
0.000
0.005
0.010
0.015
0.020
0123456789
Vout (Vrms)
THD+Noise (%)
RL = 2kΩ, f = 1kHz
VCC = ±15V, Av = 10
Macromodels MC33079
8/12
4 Macromodels
Note: Note: Please consider 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 (i.e. temperature, supply voltage, etc.). Thus the macromodel is
often not as exhaustive as the datasheet, its goal is to illustrate the main parameters of the
product.
Data issued from macromodels used outside of its specified conditions (Vcc, Temperature, etc)
or even worse: outside of the device operating conditions (Vcc, Vicm, etc) are not reliable in any
way.
** Standard Linear Ics Macromodels, 1993.
** CONNECTIONS :
* 1 INVERTING INPUT
* 2 NON-INVERTING INPUT
* 3 OUTPUT
* 4 POSITIVE POWER SUPPLY
* 5 NEGATIVE POWER SUPPLY
.SUBCKT MC33079 1 3 2 4 5 (analog)
********************************************************
.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
MC33079 Macromodels
9/12
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
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
Package Mechanical Data MC33079
10/12
5 Package Mechanical Data
In order to meet environmental requirements, ST offers these devices in ECOPACK® 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.
5.1 DIP14 Package
DIM. mm. inch
MIN. TYP MAX. MIN. TYP. MAX.
a1 0.51 0.020
B 1.39 1.65 0.055 0.065
b 0.5 0.020
b1 0.25 0.010
D 20 0.787
E 8.5 0.335
e 2.54 0.100
e3 15.24 0.600
F 7.1 0.280
I 5.1 0.201
L 3.3 0.130
Z 1.27 2.54 0.050 0.100
Plastic DIP-14 MECHANICAL DATA
P001A
MC33079 Package Mechanical Data
11/12
5.2 SO-14 Package
DIM. mm. inch
MIN. TYP MAX. MIN. TYP. MAX.
A 1.75 0.068
a1 0.1 0.2 0.003 0.007
a2 1.65 0.064
b 0.35 0.46 0.013 0.018
b1 0.19 0.25 0.007 0.010
C 0.5 0.019
c1 45˚ (typ.)
D 8.55 8.75 0.336 0.344
E 5.8 6.2 0.228 0.244
e 1.27 0.050
e3 7.62 0.300
F 3.8 4.0 0.149 0.157
G 4.6 5.3 0.181 0.208
L 0.5 1.27 0.019 0.050
M 0.68 0.026
S˚ (max.)
SO-14 MECHANICAL DATA
PO13G
8
Revision History MC33079
12/12
6 Revision History
Date Revision Changes
October 2001 1Initial release.
June 2005 2PPAP references inserted in the datasheet see table order code p1
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of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is
granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are
subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products
are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics.
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