MC33079D - STMicroelectronics

March 2008 Rev 4 1/12

MC33079

Low noise quad operational amplifier

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: +14.3 V/-14.6 V

■Excellent frequency stability

■ESD protection 2 kV

■Macromod el inc lud ed in this specification

Description

The MC33079 is a monolithic quad operational

amplifier particularly well suited for audio

applications.

It offers low voltage noise (4.5 nV/√Hz) and high

frequency pe rfor m an ce (15 MHz gain bandw idth

product, 7 V/µs slew rate).

In addition th e MC33079 has a v e ry low d istortion

(0.002%) and excellent phase/gain margins.

The output stage allows a large output voltage

swing and symmetrical source and sink currents.

DIP14

(Plastic package)

SO-14

(Plastic micropackage)

Pin connections

(top view)

Inverting Input 2

Non-inverting Input 2

Non-inverting Input 1

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

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Schematic diagram (1/4 MC33079) MC33079

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1 Schematic diagram (1/4 MC33079)

Figure 1. Schematic diagram (1/4 MC33079)

Inverting

Input

Non-inverting

Input

Output

MC33079 Absolute maximum ratings and opera ting conditions

3/12

2 Absolute maximum ratings and operating conditions

Table 1. Absolute maximum ratings (AMR)

Symbol Parameter Value Unit

VCC Supply voltage ±18 or +36 V

Vid Differential input voltage (1)

1. Either or both input voltages must not exceed the magnitude of VCC+ or VCC-.

±30 V

ViInput voltage (1) ±15 V

Output short-circuit duration Infinite s

TjJunction temperature +150 °C

Tstg Storage temperature -65 to +150 °C

Rthja

Thermal resistance junction to ambient (2) (3)

DIP14

SO-14

2. Short-circuits can cause excessive heating. Destructive dissipation can result from simultaneous short-

circuits on all amplifiers.

3. Rth are typical values.

105 °C/W

Rthjc

Thermal resistance junction to case (2) (3)

DIP14

SO-14 33

31 °C/W

ESD

HBM: human body model(4)

4. Human body model: 100 pF discharged through a 1.5 kΩ resistor between two pins of the device, done for

all couples of pin combinations with other pins floating.

2kV

MM: mach ine model(5)

5. Machine model: a 200 pF cap is charged to the specified voltage, then discharged directly between two

pins of the device with no external series resistor (internal resistor < 5 Ω), done for all couples of pin

combinations with other pins floating.

200 V

CDM: charged device model(6)

6. Charged device model: all pins plus package are charged together to the specified voltage and then

discharged directly to the ground.

1.5 kV

Table 2. Operating conditions

Symbol Parameter Value Unit

VCC Supply voltage ±2.5 to ±15 V

Toper Operating free-air temperature range -40 to 105 °C

Vicm Input common mode voltage range (ΔVio= 5mV, Vo= 0V) ±13 to ±14 V

Electrical characteristics MC33079

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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 ≤ T

amb ≤ T

max

2.5

3.5 mV

DVio Input offset voltage drift

Vo = 0V, Vic = 0V, Tmin ≤ T

amb ≤ T

max 2µV/°C

Iio Input offset current (Vo = 0V, Vic = 0V)

Tmin ≤ T

amb ≤ T

max

10 150

175 nA

Iib Input bias current (Vo = 0V, Vic = 0V)

Tmin ≤ T

amb ≤ T

max

250 750

800 nA

Avd Large signal voltage gain (RL = 2kΩ, Vo = ±10V)

Tmin ≤ T

amb ≤ T

max

85 100 dB

±Vopp

Output voltage swing (Vid = ±1V)

RL = 600Ω

RL = 2.0kΩ

RL = 10kΩ

13.2

13.5

12.2

-12.7

-14.2

14.3

-14.6

-13.2

-14

CMR Common-mode rejection ratio (Vic = ±13V) 80 100 dB

SVR Supply voltage rejection ratio (VCC+ / VCC-= +15V / -15V to +5V / -5 V) 80 105 dB

Output short-circuit current (Vid = ±1V, output to ground)

Source

Sink 15

20 29

37 mA

ICC Supply current (Vo = 0V, all amplifiers)

Tmin ≤ T

amb ≤ T

max

810

12 mA

SR Slew rate (Vi = -10V to +10V, RL = 2kΩ, CL = 100pF, AV = +1) 5 7 V/µs

GBP Gain bandwidth product (RL = 2kΩ, CL = 100pF, f = 100kHz) 10 15 MHz

B Unity gain bandwidth (open loop) 9 MHz

Gain margin (RL = 2kΩ)

CL = 0pF

CL = 100pF -11

-6 dB

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

------------

MC33079 Electrical characteristics

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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 3. VCC+ = +15V, VCC- = -15V, Tamb = 25°C (unless otherwise specified) (continued)

Symbol Parameter Min. Typ. Max. Unit

Electrical characteristics MC33079

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Figure 2. Supply current vs. supply voltage Figure 3. Output voltage vs. supply voltage

0 5 10 15 20 25 30

Supply Voltage (V)

Supply Current (mA)

-15

-10

-5

051015

Supply Voltage ( V)

Output Voltage (V)

Vid = ±1V

RL = 600Ω

Figure 4. Equivalent input noise voltage vs.

frequency Figure 5. Output short circuit current vs.

output voltage

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

0102030

Ou t put Voltag e ( V)

Output Short Circuit Current (mA)

VCC = 0/30V

Tamb = 25°C

Figure 6. Output voltage vs. supply voltage Figure 7. THD + noise vs. frequency

-15

-10

-5

051015

Supp ly Volta g e (V)

Output Voltage (V)

Vid = ±1V

RL = 2kΩ

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

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Figure 8. Voltage gain and phase vs.

frequency Figure 9. T otal harmonic distortion vs. output

voltage

-40

-20

10 100 1000 10000 100000

Frequen cy ( kHz)

Gain (dB)

-120

-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

Package information MC33079

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4 Package information

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 ratin gs 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.

4.1 DIP14 package information

Figure 10. DIP14 package mechanical drawing

Table 4. DIP14 package mechanical data

Ref.

Dimensions

Millimeters Inches

Min. Typ. Max. Min. Typ. Max.

a1 0.51 0.020

B 1.39 1.65 0.055 0.065

b0.5 0.020

b1 0.25 0.010

D200.787

E8.5 0.335

e 2.54 0.100

e3 15.24 0.600

F 7.1 0.280

I 5.1 0.201

MC33079 Package information

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4.2 SO-14 package information

Figure 11. SO-14 package mechanical drawing

L3.3 0.130

Z 1.27 2.54 0.050 0.100

Table 4. DIP14 package mechanical data

Table 5. SO-14 package mechanical data

Ref.

Dimensions

Millimeters Inches

Min. Typ. Max. Min. Typ. Max.

A1.750.068

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

C0.5 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

Package information MC33079

10/12

G 4.6 5.3 0.181 0.208

L 0.5 1.27 0.019 0.050

M0.680.026

S 8° (max.)

Table 5. SO-14 package mechanical data

MC33079 Ordering information

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5 Ordering information

6 Revision history

Table 6. Order codes

Order code Tem perature range Package Packaging Marking

MC33079N -40°C to +105°C DIP14 Tube MC33079N

MC33079D

MC33079DT SO-14 Tube or

Tape & reel 33079

MC33079YD(1)

MC33079YDT(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.

-40°C to + 105°C SO-14

(Automotive grade) Tube or

Tape & reel 33079Y

Table 7. Document revision history

Date Revision Changes

10-Oct-2001 1 Initial release.

23-Jun-2005 2 PPAP references inserte d in the datasheet. See order codes table.

21-Nov-2007 3

Added Rthja, Rthjc and ESD values in Table 1: Absolute maximum

ratings (AMR).

Added footnote fo r automotive grade order codes in order codes

table.

Updated document format.

13-Mar-2008 4 Corrected value for ESD HBM pa rameter.

Removed section on Macromodel.

MC33079

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