ST MC33078 User Manual
Features
1
2
3
45
6
7
8
-
+
-
+
Output 1
Inverting input 1
Non-inverting input 1
V
CC
V
CC
Output 2
Inverting input 2
Non-inverting input 2
-
+
■ Low voltage noise: 4.5 nV/√Hz
■ High gain bandwidth product: 15 MHz
■ High slew rate: 7V/µs
■ 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
Description
MC33078
Low noise dual operational amplifier
N
DIP8
(Plastic package)
D
SO-8
(Plastic micropackage)
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/µs slew rate).
In addition, the MC33078 has a very low
distortion (0.0 02%) an d excellent phase/ga in
margins.
The output stage allows a large output voltage
swing and symmetrical source and sink currents.
Pin connections (top view)
March 2008 Rev 5 1/15
www.st.com
15
Absolute maximum ratings and operating conditions MC33078
1 Absolute maximum ratings and operating conditions
Table 1. Absolute maximum ratings (AMR)
Symbol Parameter Value Unit
V
V
Supply voltage ±18 or +36 V
CC
Differential input voltage - note
id
Input voltage - see note 1 ±15 V
V
i
(1)
±30 V
Output short circuit duration Infinite s
T
Junction temperature +150 °C
j
T
R
R
ESD
1. Either or both input voltages must not exceed the magnitude of V
2. Short-circuits can cause excessive heating and destructive dissipation.
3. R
4. 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.
5. Machine model: A 200pF 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.
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. Operating conditions
Storage temperature -65 to +150 °C
stg
(2) (3)
(2) (3)
CC
+
or V
125
85
40
41
2kV
200 V
1.5 kV
-
.
CC
Thermal resistance junction to ambient
thja
SO-8
DIP8
Thermal resistance junction to case
thjc
SO-8
DIP8
HBM: human body model
MM: machine model
(5)
CDM: charged device model
are typical values.
th
(4)
(6)
°C/W
°C/W
Symbol Parameter Value Unit
V
T
Supply voltage ±2.5 to ±15 V
CC
Operating free-air temperature range -40 to 105 °C
oper
2/15
MC33078 Schematic diagram
2 Schematic diagram
Figure 1. Schematic diagram (1/2 MC33078)
V
CC
Inverting
Input
Non-inverting
Input
V
CC
Output
3/15
Electrical characteristics MC33078
3 Electrical characteristics
Table 3. V
+
= +15V, V
CC
Symbol Parameter Min. Typ. Max. Unit
-
= -15V, T
CC
= 25°C (unless otherwise specified)
amb
V
DV
V
A
Input offset voltage (Vo = 0V, Vic = 0V)
io
≤ T
T
min
amb
≤ T
max
Input offset voltage drift
I
I
icm
io
io
ib
= 0V, Vic = 0V, T
V
o
min
≤ T
amb
≤ T
max
Input offset current (Vo = 0V, Vic = 0V)
≤ T
T
min
amb
≤T
max
Input bias current (Vo = 0V, Vic = 0V)
≤ T
T
min
amb
≤ T
max
Input common mode voltage range (ΔVio = 5mV, Vo = 0V) ±13 ±14 V
Large signal voltage gain (RL = 2kΩ, Vo = ±10V)
vd
≤ T
T
min
amb
≤ T
max
0.15 2
3
2µV/°C
10 150
175
250 750
800
9085100
Output voltage swing (Vid = ±1V)
= 600Ω
R
L
RL = 600Ω
±V
opp
RL = 2.0kΩ
= 2.0kΩ
R
L
RL = 10kΩ
RL = 10kΩ
CMR Common-mode rejection ratio (V
SVR
Supply voltage rejection ratio
+
-
/ V
V
CC
= +15V / -15V to +5V / -5V
CC
13.2
13.5
= ±13V) 80 100 dB
ic
12.2
-12.7
14
-14.2
-13.2
14.3
-14.6
-14
80 105 dB
Output short-circuit current (Vid = ±1V, output to ground)
I
o
I
CC
SR
GBP
Source
Sink
Supply current (Vo = 0V, all amplifiers)
≤ T
T
min
amb
≤ T
max
Slew rate
= -10V to +10V, RL = 2kΩ, CL = 100pF, AV = +1
V
i
Gain bandwidth product
R
= 2kΩ, CL = 100pF, f = 100kHz
L
15
20
29
37
45
5.5
57 V/µs
10 15 MHz
B Unity gain bandwidth (Open loop) 9 MHz
mV
nA
nA
dB
V
mA
mA
A
φm
Gain margin (RL = 2kΩ), CL = 0pF
m
CL = 100pF
Phase margin (R
= 100pF
C
L
Equivalent input noise voltage
e
n
RS = 100Ω, f = 1kHz
i
Equivalent input noise current (f = 1kHz) 0.5 pA/√Hz
n
= 2kΩ), CL = 0pF
L
4/15
-11
-6
55
30
Degrees
4.5 nV/
dB
√Hz
MC33078 Electrical characteristics
Table 3. V
+
= +15V, V
CC
-
= -15V, T
CC
= 25°C (unless otherwise specified) (continued)
amb
Symbol Parameter Min. Typ. Max. Unit
THD
VO1/V
FPB
Total harmonic distortion
= 2kΩ, f = 20Hz to 20kHz, Vo = 3V
R
L
Channel separation
O2
f = 20Hz to 20kHz
Full power bandwidth
V
= 27Vpp, RL = 2kΩ, THD ≤ 1%
o
Output impedance
Z
o
R
i
C
i
= 0V, f = 9MHz
V
o
Input resistance
Vic = 0V
Input capacitance
Vic = 0V
, AV = +1
rms
0.002 %
120 dB
120 kHz
37 Ω
175 kΩ
12 pF
5/15
Loading...