LM124A
LM224A - LM324A
LOW POWER QUAD OPERATIONAL AMPLIFIERS
.
.
.
.
.
.
.
.
.
WIDE GAIN BANDWIDTH / 1.3MHz
LARGE VOLTAGE GAIN : 100dB
VERY LOW SUPPLY CURRENT/AMPLI :
375µA
LOW INPUT BIAS CURRENT : 20nA
LOW INPUT OFFSET VOLTAGE : 3mV max.
LOW INPUT OFFSET CURRENT : 2nA
WIDE POWER SUPPLY RANGE :
SINGLE SUPPLY : +3V TO +30V
DUAL SUPPLIES :
±1.5V
TO
±15V
INPUT COMMON-MODE VOLTAGE RANGE
INCLUDES GROUND
ESD INTERNAL PROTECTION : 2kV
N
DIP14
(Plastic Package)
D
SO14
(Plastic Micropackage)
DESCRIPTION
These circuits consist of four independent, high
gain, internally frequency compensated operational
amplifiers. They operate from a single power supply
over a wide range of voltages. Operation from split
power supplies is also possible and the low power
supply current drain is independent of the magni-
tude of the power supply voltage.
All the pins are protected against electrostatic dis-
charges up to 2000V (as a consequence, the input
voltages must not exceed the magnitude of V
CC+
or
V
CC-
.)
PIN CONNECTIONS
(top view)
ORDER CODES
Part
Number
LM124A
LM224A
LM324A
Temperature
Range
-55 C, +125 C
-40
o
C, +105
o
C
0 C, +70 C
o
o
o
o
Package
N
•
•
•
D
•
•
•
Example :
LM224AN
Output 1 1
Inve rting Input 1 2
Non-inve rting Input 1 3
V
CC
+
4
14
Output 4
Inve rting Input 4
Non-inve rting Input 4
V
CC
-
Non-inve rting Input 3
Inve rting Input 3
Output 3
-
+
-
+
13
12
11
Non-inve rting Input 2
Inve rting Input 2
Output 2
5
6
7
+
+
10
9
8
-
-
November 1997
1/13
LM124A - LM224A - LM324A
SCHEMATIC DIAGRAM
(1/4 LM124A)
V
CC
6
µ
A
4
µ
A
C
C
100
µ
A
Q5
Q6
Inve rting
input
Q2
Q1
Q3
Q4
Q11
Q7
R
SC
Non-inverting
input
Output
Q13
Q10
Q8
Q9
Q12
50
µ
A
GND
ABSOLUTE MAXIMUM RATINGS
Symbol
V
cc
V
i
V
id
P
tot
-
I
in
T
oper
T
stg
Parameter
Supply Voltage
Input Voltage
Differential Input Voltage - (*)
Power Dissipation
N Suffix
D Suffix
+32
500
-
50
-55 to +125
-65 to +150
+
LM124A
LM224A
±16
or 32
-0.3 to +32
+32
500
400
Infinite
50
-40 to +105
-65 to +150
-
LM324A
Unit
V
V
V
mW
mW
mA
o
o
+32
500
400
50
0 to +70
-65 to +150
Output Short-circuit Duration - (note 1)
Input Current – (note 6)
Operating Free Air Temperature Range
Storage Temperature Range
C
C
(*) - Ei ther or bo th i nput vo ltages mu st not exceed the magn itude of V
CC
o r V
CC
.
2/13
LM124A - LM224A - LM324A
ELECTRICAL CHARACTERISTICS
V
CC+
=
+5V, V
CC–
=
Ground, V
O
=
1.4V, T
amb
=
+25
o
C (unless otherwise specified)
Symbol
V
io
Parameter
Input Offset Voltage (note 3)
o
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 (note 2)
T
amb
= +25
o
C
T
min.
≤
T
amb
≤
T
max
.
Large Signal Voltage Gain
+
(V
CC
= +15V, R
L
= 2kΩ, V
O
= 1.4V to 11.4V)
o
T
amb
= +25 C
T
min.
≤
T
amb
≤
T
max
.
Supply Voltage Rejection Ratio (R
S
≤
10kΩ)
(V
CC+
= 5V to 30V)
o
T
amb
= +25 C
T
min.
≤
T
amb
≤
T
max
.
Supply Current, all Amp, no load
V
CC
T
amb
= +25
o
C
V
CC
V
CC
T
min.
≤
T
amb
≤
T
max
.
V
CC
=
=
=
=
+5V
+30V
+5V
+30V
LM124A - LM224A - LM324A
Min.
Typ.
2
Max.
3
5
nA
2
20
40
nA
20
100
200
V/mV
50
25
100
dB
65
65
110
mA
0.7
1.5
0.8
1.5
1.2
3
1.2
3
V
0
0
70
60
20
10
12
80
mA
40
20
50
70
mA
µA
V
CC
-1.5
V
CC
-2
dB
Unit
mV
I
io
I
ib
A
vd
SVR
I
CC
V
icm
Input Common Mode Voltage Range
(V
CC
= +30V) - (note 4)
T
amb
= +25
o
C
T
min.
≤
T
amb
≤
T
max.
Common-mode Rejection Ratio (R
S
≤
10kΩ)
o
T
amb
= +25 C
T
min.
≤
T
amb
≤
T
max
Output Current Source (V
id
= +1V)
V
CC
= +15V, V
o
= +2V
Output Sink Current (V
id
= -1V)
V
CC
= +15V, V
o
= +2V
V
CC
= +15V, V
o
= +0.2V
CMR
I
source
I
sink
3/13
LM124A - LM224A - LM324A
ELECTRICAL CHARACTERISTICS
(continued)
Symbol
V
OH
Parameter
High Level Output Voltage
(V
CC
= +30V)
T
amb
= +25
o
C
T
min
.
≤
T
amb
≤
T
max
.
o
T
amb
= +25 C
T
min
.
≤
T
amb
≤
T
max
.
(V
CC
= +5V, R
L
= 2kΩ)
o
T
amb
= +25 C
T
min
.
≤
T
amb
≤
T
max
.
LM124A - LM224A - LM324A
Min.
26
26
27
27
3.5
3
mV
5
20
20
V/µs
0.4
MHz
1.3
%
0.015
40
7
10
120
30
200
nV
Hz
√
µV/
o
C
pA/
o
C
dB
Typ.
27
28
Max.
Unit
V
R
L
= 2kΩ
R
L
= 10kΩ
V
OL
Low Level Output Voltage (R
L
= 10kΩ)
o
T
amb
= +25 C
T
min
.
≤
T
amb
≤
T
max
.
Slew Rate (V
CC
= 15V, V
I
= 0.5 to 3V,
R
L
= 2kΩ, C
L
= 100pF, unity gain)
Gain Bandwidth Product (V
CC
= 30V
f = 100kHz, V
in
= 10mV
R
L
= 2kΩ, C
L
= 100pF)
Total Harmonic Distortion
(f = 1kHz, A
V
= 20dB, R
L
= 2kΩ, V
O
= 2V
pp
C
L
= 100pF, V
CC
= 30V)
Equivalent Input Noise Voltage
(f = 1kHz, R
s
= 100Ω, V
CC
= 30V)
Input Offset Voltage Drift
Input Offset Current Drift
Channel Separation (note 5)
1kHz
≤
f
≤
20kHz
SR
GBP
THD
e
n
DV
io
DI
IO
V
O
1/V
O
2
Notes :
1. Shor t -cir cui t s f rom t he out put t o V
C C
can cause excessi ve heat i ng if V
C C
> 15V. T he maxi mum out put cur rent
is appr oxi mat el y 40mA i ndependent of the magni t ude of V
C C
. D estr ucti ve di ssipat i on can r es ult f r om simul ta-
neous short -cir cuit on al l ampli f iers.
2. The di r ect ion of the i nput cur rent is out of t he IC . Thi s cur r ent is essenti al l y constant, i ndependent of the st ate
of the out put so no l oadi ng change exists on the i nput l i nes.
3. V
o
= 1. 4V , R
s
= 0Ω
,
5V < V
CC +
< 30V , 0 < V
ic
< V
C C +
- 1.5V
4. The i nput common- mode vol t age of eit her i nput si gnal volt age shoul d not be allow ed to go negat i ve by mor e
than 0.3V . T he upper end of the common- mode vol tage r ange i s V
C C +
- 1.5V , but eit her or bot h i nput s can go
to +32V w i thout damage.
5. Due t o the proxi mit y of ex ternal component s insure t hat coupl ing i s not ori gi nat ing vi a str ay capaci t ance be-
tw een these ext ernal par t s. T hi s t ypi call y can be detect ed as t his t ype of capaci tance i ncreases at higher f re-
quences.
6. This input cur rent onl y exi sts w hen t he volt age at any of t he i nput leads is dr iven negat ive. It i s due t o t he
coll ect or - base juncti on of t he i nput PN P transistor becomi ng forw ar d biased and ther eby act ing as input di-
odes clamps. I n addit i on to thi s di ode act i on, there i s al so N PN par asit i c act ion on the I C chip. t hi s t ransi st or
acti on can cause t he output vol t ages of the Op- amps t o go t o the V
CC
volt age l evel (or to ground f or a l arge
over dri ve) f or t he ti me dur at ion t han an input i s dr iven negati ve.
This i s not destr uct i ve and nor mal out put wi l l set up again f or i nput vol tage higher t han - 0.3V.
4/13
LM124A - LM224A - LM324A
INPUT BIAS CURRENT
ve rsus AMBIENT TEMPERATURE
IB (nA)
24
21
18
15
12
9
6
3
0
-55-35-15 5 25 45 65 85 105 125
AMBIENT TEMPERATURE ( C)
S UPPLY CURRENT
4
VCC
SUPPLY CURRENT (mA)
3
mA
ID
-
2
+
1
Tamb = 0 C to +125 C
Ta mb = -55 C
0
10
20
30
POS ITIVE S UPP LY VOLTAGE (V)
5/13
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