MC33078
LOW NOISE DUAL OPERATIONAL AMPLIFIERS
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LOW VOLTAGE NOISE :
4.5nV/√Hz
√
HIGH GAIN BANDWIDTH PRODUCT :
15MHz
HIGH SLEW RATE :
7V/
µ
s
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
N
DIP8
(Plastic Package)
D
SO8
(Plastic Micropackage)
DESCRIPTION
The MC33078 is a monolithic dual operational
amplifier particularly well suited for audio applica-
tions. It offers low voltage noise (4.5nV/√
) and
Hz
high frequency performances (15MHz Gain Band-
width product, 7V/µs 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)
ORDER CODES
Part Number
MC33078
Temperature Range
-40, +105 C
o
Package
N
•
D
•
Output 1
Inverting input 1
Non-invertinginput 1
1
2
3
-
4
8
-
+
-
+
V
CC
+
Output 2
Inverting input 2
Non-inverting input 2
7
6
5
V
CC
November 1997
1/9
MC33078
SCHEMATIC DIAGRAM
(1/2 MC33078)
V
CC
Output
Inverting
Input
Non-inverting
Input
V
CC
ABSOLUTE MAXIMUM RATINGS
Symbol
V
CC
V
id
V
i
T
oper
T
j
T
stg
P
tot
Notes :
Parameter
Supply Voltage
Differential Input Voltage - (note 1)
Input Voltage - (note 1)
Output Short-Circuit Duration - (note 2)
Operating Free-air Temperature Range
Maximum Junction Temperature
Storage Temperature
Maximum Power Dissipation - (note 2)
Value
±18
or +36
±30
±15
Infinite
-40 to +105
+150
-65 to +150
500
Unit
V
V
V
o
o
o
C
C
C
mW
1. Either or both input voltages must not exceed the magnitude of V
CC+
or V
CC-
2. Power dissipation must be considered to ensure maximum junction temperature (T
j
) is not exceeded
OPERATING CONDITIONS
Symbol
V
CC
Supply Voltage
Parameter
Value
±2.5
to
±15
Unit
V
2/9
MC33078
ELECTRICAL CHARACTERISTICS
V
CC+
= +15V, V
CC-
= -15V, T
amb
= 25
o
C (unless otherwise specified)
Symbol
V
io
Parameter
Input Offset Voltage (V
o
= 0V, V
ic
= 0V)
o
T
amb
= +25 C
T
min.
≤
T
amb
≤
T
max.
Input Offset Voltage Drift
V
ic
= 0V, V
o
= 0V, T
min.
≤
T
amb
≤
T
max.
Input Offset Current (V
ic
= 0V, V
O
= 0V)
o
T
amb
= +25 C
T
min.
≤
T
amb
≤
T
max.
Input Bias Current (V
ic
= 0V, V
O
= 0V)
T
amb
= +25
o
C
T
min.
≤
T
amb
≤
T
max.
Common Mode Input Voltage Range (∆V
IO
= 5mV, V
O
= 0V)
Large Signal Voltage Gain (R
L
= 2kΩ, V
O
=
±10V)
o
T
amb
= +25 C
T
min.
≤
T
amb
≤
T
max.
Output Voltage Swing (V
id
=
±1V)
R
L
= 600Ω
R
L
= 600Ω
R
L
= 2.0kΩ
R
L
= 2.0kΩ
R
L
= 10kΩ
R
L
= 10kΩ
CMR
SVR
I
o
Common Mode Rejection Ratio (V
ic
=
±13V)
Supply Voltage Rejection Ratio
V
CC+
/ V
CC-
= +15V / -15V to +5V / -5V
Output Short Circuit Current (V
id
=
±1V,
Output to Ground)
Source
Sink
Supply current (V
O
= 0V, All Amplifiers)
o
T
amb
= +25 C
T
min.
≤
T
amb
≤
T
max.
Slew Rate
V
i
= -10V to +10V, R
L
= 2kΩ, C
L
= 100pF, A
V
= +1
Gain Bandwidth Product (f = 100kHz, R
L
= 2kΩ, C
L
= 100pF)
Unity Gain Bandwidth (Open loop)
Gain Margin (R
L
= 2kΩ)
Phase Margin (R
L
= 2kΩ)
C
L
= 0pF
C
L
= 100pF
C
L
= 0pF
C
L
= 100pF
5
10
13.2
13.5
80
80
15
20
±13
90
85
Min.
Typ.
0.15
Max.
2
3
µV/
C
nA
10
150
175
nA
250
±14
100
V
12.2
-12.7
14
-14.2
14.3
-14.6
100
105
mA
29
37
mA
4
5
5.5
V/µs
7
15
9
-11
-6
55
30
4.5
0.5
0.002
120
120
37
175
12
dB
kHz
Ω
kΩ
pF
MHz
MHz
dB
Degrees
nV
√
Hz
pA
Hz
√
%
-13.2
-14
dB
dB
750
800
V
dB
o
Unit
mV
DV
io
I
io
2
I
ib
V
icm
A
vd
±V
opp
I
CC
SR
GBP
B
A
m
∅m
e
n
i
n
THD
V
O1
/V
O2
FPB
Z
o
R
i
C
i
Equivalent Input Noise Voltage (R
S
= 100Ω, f = 1kHz)
Equivalent Input Noise current (f = 1kHz)
Total Harmonic Distortion
R
L
= 2kΩ, f = 20Hz to 20kHz, V
O
= 3V
rms
, A
V
= +1
Channel Separation (f = 20Hz to 20kHz)
Full Power Bandwidth (V
O
= 27V
pp
, R
L
= 2kΩ, THD
≤
1%)
Output Impedance (V
O
= 0V, f = 9MHz)
Input Resistance (V
ic
= 0V)
Input Capacitance (V
ic
= 0V)
3/9
MC33078
TOTAL SUPPLY CURRENT vs SUPPLY
VOLTAGE
5
60
OUTPUT SHORT CIRCUIT CURRENT vs
OUTPUT VOLTAGE
4
3
Output Short Circuit Current (mA)
40
Total Supply Current (mA)
20
2
Vcc=0/30V
Tamb.=25°C
0
1
-20
0
0
10
20
30
-40
0
10
20
30
Supply Voltage (V)
Output Voltage (V)
OUTPUT VOLTAGE vs SUPPLY VOLTAGE
OUTPUT VOLTAGE vs SUPPLY VOLTAGE
15
15
10
10
Output Voltage (V)
5
Output Voltage (V)
5
0
Vid=±1V
RL=600ohms
0
Vid=±1V
RL=2kohms
-5
-5
-10
-10
-15
-15
0
5
10
15
0
Supply Voltage (V)
5
10
15
Supply Voltage (V)
EQUIVALENT INPUT NOISE VOLTAGE vs
FREQUENCY
THD + NOISE vs FREQUENCY
11
1
Equivalent Input Noise Voltage
9
(nV/SQR(Hz))
THD+Noise(%)
7
Vcc=±15V G=100
Rs=100 Tamb.=25°C
0,1
RL=2kohms Vo=3Vrms
Vcc=±15V Av=1
0,01
5
3
0,001
1
0,01
0,1
1
10
100
0,0001
0,01
0,1
1
10
100
Frequency (kHz)
Frequency (kHz)
4/9
MC33078
VOLTAGE GAIN AND PHASE vs FREQUENCY
THD + NOISE vs Vout
60
180
1,000
phase
40
120
gain
THD+Noise (%)
0,100
Phase (Deg)
Gain (dB)
20
60
RL=2kohms F=1kHz
Vcc=±15V Av= 10
0
0
0,010
-20
RL=2kohms CL=100pF
Vcc=±15V G=-100
-60
0,001
-40
10
100
1000
Frequency (kHz)
10000
-120
100000
1
2
3
4
5
6
Vout (Vrms)
7
8
9
10
5/9
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