®
MC3303
MC3403 - MC3503
LOW POWER QUAD BIPOLAR OPERATIONAL AMPLIFIERS
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SHORT-CIRCUIT PROTECTED OUTPUTS
CLASS AB OUTPUT STAGE FOR MINIMAL
CROSSOVER DISTORTION
SINGLE SUPPLY OPERATION : + 3 V TO + 36V
DUAL SUPPLIES :
±1.5V
TO
±18V
LOW INPUT BIAS CURRENT : 500nA MAX
INTERNALLY COMPENSATED
SIMILAR PERFORMANCE TO POPULAR
UA741
N
DIP14
(Plastic Package)
D
SO14
(Plastic Micropackage)
DESCRIPTION
The MC3403 is a low-cost, quad operational ampli-
fier with true differential inputs. The device has elec-
trical characteristics similar to the popular UA741.
However the MC3403, has several distinct advan-
tages over standard operational amplifier types in
single supply applications. The quad amplifier can
operate at supply voltages as low as 3.0 volts or as
high as 36 volts with quiescent currents about one
third of those associated with the UA741 (on a per
amplifier basis). The common-mode input range in-
cludes the negative supply, thereby eliminating the
necessity for external biasing components in many
applications.
PIN CONNECTIONS
(top view)
P
TSSOP14
(Thin Shrink Small Outline Package)
ORDER CODES
Part
Number
MC3303
MC3403
MC3503
Temperature
Range
–40 C, +105 C
0
o
C, +70
o
C
–55 C, +125 C
o
o
o
o
Package
N
•
•
•
D
•
•
•
P
•
•
•
Example :
MC3403N
Output 1 1
Inverting Input 1 2
Non-inverting Input 1 3
V
CC
+ 4
Non-inverting Input 2 5
Inverting Input 2 6
Output 2 7
+
-
+
-
-
+
-
+
14 Output 4
13 Inverting Input 4
12 Non-inverting Input 4
11 V
CC
-
10 Non-inverting Input 3
9
8
Inverting Input 3
Output 3
August 1998
1/11
MC3303 - MC3403 - MC3503
SCHEMATIC DIAGRAM
(each amplifier)
Output
V
(1 stage)
Q20
Q19
Q18
Q17
Q16
Q27
CC
Q23
C1
8pF
R4
31k
Ω
Q28
Q1
Q15
Non-inverting
input
Q22
Q24
Q9
Inverting
input
R2
37 kΩ
Q12
Q21
Q25
Q11
Q6
Q30
R6
0.7k
Ω
Q13
R3
25
Ω
Q29
Q2
Q3
Q4
Q5
Q14
Q7
Q10
Q8
R5
8.2k
Ω
R1
12k
Ω
V
CC
(Ground)
SINGLE SUPPLY
+3V to +30V
V
CC
DUAL SUPPLIES
V
CC
1.5V to 18V
1.5V to 18V
V
CC
V
CC
ABSOLUTE MAXIMUM RATINGS
Symbol
V
CC
V
id
V
i
–
P
tot
T
oper
T
stg
Notes :
Parameter
Supply Voltage
Differential Input Voltage
Input Voltage (note 1)
Output Short-circuit Duration (note 2)
Power Dissipation
Operating Free-air Temperature Range
Storage Temperature Range
MC3503
±18
or 36
±36
±18
500
–55 to +125
–65 to +150
MC3403
±18
or 36
±36
±18
Infinite
500
0 to +70
–65 to +150
MC3303
±18
or 36
±36
±18
500
–40 to +105
–65 to +150
Unit
V
V
V
–
mW
o
o
C
C
1. For supply voltages less than
±15V,
the absolute maximum input voltage is equal to the supply voltage.
2. Any of the amplifier outputs can be shorted to ground indefinitely ; however more than one should not be simultaneously shorted
as the maximum junction temperature will be exceeded.
2/11
MC3303 - MC3403 - MC3503
ELECTRICAL CHARACTERISTICS
V
CC
=
±15V,
T
amb
= +25
o
C, (unless otherwise specified)
Symbol
V
IO
Parameter
Input Offset Voltage (R
S
≤
10kΩ)
T
amb
= 25
o
C
T
min.
≤
T
amb
≤
T
max.
Input Offset Current
o
T
amb
= 25 C
T
min.
≤
T
amb
≤
T
max.
Input Bias Current
T
amb
= 25
o
C
T
min.
≤
T
amb
≤
T
max.
Large Signal Voltage Gain (V
O
=
±10V,
R
L
= 2kΩ)
o
T
amb
= 25 C
T
min.
≤
T
amb
≤
T
max.
Supply Voltage Rejection Ratio (R
S
≤
10kΩ)
T
amb
= 25
o
C
T
min.
≤
T
amb
≤
T
max.
Supply Current, all Amp, no Load
T
amb
= 25
o
C
T
min.
≤
T
amb
≤
T
max.
V
icm
Input Common Mode Voltage Range
T
amb
= 25
o
C
T
min.
≤
T
amb
≤
T
max.
Common Mode Rejection Ratio (R
S
≤
10kΩ)
T
amb
= 25
o
C
T
min.
≤
T
amb
≤
T
max.
Output Short-circuit Current
Output Voltage Swing
o
T
amb
= 25 C
T
min.
≤
T
amb
≤
T
max.
SR
t
r
, t
f
K
OV
Z
I
Z
O
B
om
B
GBP
THD
e
n
Slew Rate (V
I
=
±10V
R
L
= 2kΩ, C
L
= 100pF,
T
amb
= 25
o
C, unity gain)
Rise Time and Fall Time (V
O
=
±
20mV, R
L
= 2kΩ, C
L
= 100pF
T
amb
= 25
o
C, unity gain)
Overshoot (V
I
=
±
20mV, R
L
= 2kΩ, C
L
= 100pF,
o
T
amb
= 25 C, unity gain)
Input Impedance
Output Impedance
Power Bandwidth (R
L
= 2kΩ, C
L
= 100pF, A
v
= 1, T
amb
= 25 C,
V
O
= 2V
pp
, THD
≤
5%)
Unity Gain Bandwidth (V
O
= 10mV, R
L
= 2kΩ, C
L
= 100pF,
T
amb
= 25
o
C, unity gain)
Gain Bandwidth Product (V
O
= 10mV, R
L
= 2kΩ, C
L
= 100pF,
o
f = 100kHz, T
amb
= 25 C)
Total Harmonic Distortion (f = 1kHz, A
v
= 20dB, R
L
= 2kΩ,
V
O
= 2V
pp
, C
L
= 100pF, T
amb
= 25
o
C)
Equivalent Input Noise Voltage (f = 1kHz, R
s
= 100Ω)
0.7
o
MC3303 - MC3403
MC3503
Min.
Typ.
1
Max.
Unit
mV
5
6
nA
50
200
nA
500
800
V/mV
I
IO
2
I
ib
40
A
vd
50
25
77
77
200
dB
90
mA
2.8
SVR
I
CC
MC3503
MC3503
– 15
– 15
70
70
10
R
L
R
L
R
L
R
L
=
=
=
=
10kΩ
2kΩ
2kΩ
10kΩ
12
10
10
12
0.35
90
30
13.5
13
7
4
8
5
V
+ 13
+ 13
dB
CMR
I
OS
±
V
opp
45
mA
V
V/µs
0.5
0.18
10
0.3
1
75
9
MHz
1
MHz
1
%
0.02
43
nV
Hz
√
MΩ
Ω
kHz
µs
%
3/11
MC3303 - MC3403 - MC3503
ELECTRICAL CHARACTERISTICS
(continued)
Symbol
∅m
DV
IO
DI
IO
V
O1
/V
02
Phase Margin
Input Offset Voltage Drift
T
min.
≤
T
amb
≤
T
max.
Input Offset Current Drift
T
min
.
≤
T
amb
≤
25
o
C
Channel Separation
Parameter
MC3303 - MC3403 - MC3503
Min.
Typ.
60
10
50
120
dB
Max.
Unit
Degrees
µV/
C
o
pA/ C
o
ELECTRICAL CHARACTERISTICS
V
CC+
=
5V, V
CC–
=
Ground, T
amb
= 25
o
C (unless otherwise specified)
Symbol
V
IO
Parameter
Input Offset Voltage (R
S
≤
10kΩ)
T
amb
= 25
°C
T
min
≤
T
amb
≤
T
max
Input Offset Current
T
amb
= 25
o
C
T
min.
≤
T
amb
≤
T
max.
Input Bias Current
T
amb
= 25
o
C
T
min.
≤
T
amb
≤
T
max.
Large Signal Voltage Gain (V
O
= 1.4 to 2.4V, R
L
= 2kΩ)
T
amb
= 25
o
C
T
min.
≤
T
amb
≤
T
max.
Supply Voltage Rejection Ratio (R
S
≤
10kΩ)
o
T
amb
= 25 C
T
min.
≤
T
amb
≤
T
max.
Supply Current (All Amp)
MC3503
V
opp
Output Voltage Range (R
L
= 10kΩ)
V
CC
= +5V
+5 < V
CC
≤
+30V
3.3
V
CC+
-2V
3.5
V
CC+
-1.7V
10
5
77
77
MC3303 - MC3403 - MC3503
Min.
Typ.
1
Max.
5
6
nA
2
50
200
nA
40
500
800
V/mV
200
dB
90
2.5
7
4
mA
V
Unit
mV
I
IO
I
ib
A
vd
SVR
I
CC
4/11
MC3303 - MC3403 - MC3503
CIRCUIT DESCRIPTION
The MC3403 is made using four internally compen-
sated, two-stage operational amplifiers. The first
stage of each consists of differential input devices
Q24 and Q22 with input buffer transistors Q25 and
Q21 and the differential to single ended converter
Q3 and Q4. The first stage performs not only the first
stage gain function but also performs the level shift-
ing and transconductance reduction functions. By
reducing the transconductance a smaller compen-
sation capacitor (only 8pF) can be employed, thus
saving chip area.
The transconductance reduction is accomplished
by splitting the collectors of Q24 and Q22. Another
feature of this input stage is that the input common-
mode range can include the negative supply of
TYPICAL PERFORMANCE CURVES
ground, in single supply operation, without satura-
tion either the input devices or the differential to sin-
gle-ended converter.
The second stage consists of a standard current
source load amplifier stage. The output stage is
unique because it allows the output to swing to
ground in single supply operation and yet does not
exhibit any crossover distortion in split supply opera-
tions. This is possible because class AB operation
is utilized.
Each amplifier is biased from an internal voltage
regulator which has a low temperature coefficient
thus giving each amplifier good temperature charac-
teristics as well as excellent power supply rejection.
20µs/div.
A
V
= 100
APPLICATION INFORMATION
VOLTAGE REFERENCE
V
CC
R2
10kΩ
WIEN BRIDGE OSCILLATOR
50kΩ
V
CC
10kΩ
5kΩ
V
CC
1/4
MC3403
V
O
V
(ref)
1/4
MC3403
V
(ref)
= 1 V
CC
2
V
O
f
O
=
For
R
R
C
C
1
2
π
RC
f
O
= 1kHz
R = 16kΩ
C = 0.01µF
R1
10kΩ
V
O
=
R1
V
CC
R1 + R2
V
O
= 1 V
CC
2
5/11
