LM224A-LM324A
Low power quad operational amplifiers
Features
■
■
■
■
■
■
■
■
Wide gain bandwidth: 1.3 MHz
Input common-mode voltage range includes
ground
Large voltage gain: 100 dB
Very low supply current/amplifier: 375 µA
Low input bias current: 20 nA
Low input offset voltage: 3 mV max.
Low input offset current: 2 nA
Wide power supply range:
Single supply: +3 V to +30 V
Dual supplies: ±1.5 V to ±15 V
D
SO-14
(Plastic micropackage)
N
DIP14
(Plastic package)
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 magnitude of the power supply
voltage.
P
TSSOP-14
(Thin shrink small outline package)
Order codes
Part number
LM224AN
LM224AD/ADT
LM224APT
LM324AN
LM324AD/ADT
LM324APT
Temperature range
Package
DIP
SO
TSSOP
(Thin shrink outline package)
DIP
SO
TSSOP
(Thin shrink outline package)
Packaging
Tube
Tube or tape & reel
Tape & reel
Tube
Tube or tape & reel
Tape & reel
-40° C, +105° C
0° C, +70° C
September 2006
Rev 4
1/20
www.st.com
20
Contents
LM224A-LM324A
Contents
1
2
3
4
5
6
Pin connections and schematic diagram . . . . . . . . . . . . . . . . . . . . . . . . 3
Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Typical single-supply applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Macromodels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
6.1
6.2
6.3
DIP14 package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
SO-14 package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
TSSOP14 package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
7
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
2/20
LM224A-LM324A
Pin connections and schematic diagram
1
Pin connections and schematic diagram
Figure 1.
Pin connections (top view)
Output 1 1
Inverting Input 1 2
Non-inverting Input 1 3
V
CC
+ 4
Non-inverting Input 2
Inverting Input 2
5
6
+
-
+
-
-
+
-
+
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
Output 2 7
Figure 2.
Schematic diagram (1/4 LM124)
3/20
Absolute maximum ratings
LM224A-LM324A
2
Absolute maximum ratings
Table 1.
Symbol
V
CC
V
i
V
id
P
tot
Supply voltage
Input voltage
Differential input voltage
(1)
Power dissipation:
N suffix
D suffix
Output short-circuit duration
(2)
I
in
T
oper
T
stg
T
j
Input current
(3)
Operating free-air temperature range
Storage temperature range
Maximum junction temperature
Thermal resistance junction to ambient
(4)
:
SO14
TSSOP14
DIP14
Thermal resistance junction to case:
SO14
TSSOP14
DIP14
HBM: human body model
(5)
ESD
MM: machine model
(6)
CDM: charged device model
1. Neither of the input voltages must exceed the magnitude of V
CC+
or V
CC-
.
2. Short-circuits from the output to V
CC
can cause excessive heating if V
CC
> 15 V. The maximum output
current is approximately 40 mA independent of the magnitude of V
CC
. Destructive dissipation can result
from simultaneous short-circuits on all amplifiers.
3. This input current only exists when the voltage at any of the input leads is driven negative. It is due to the
collector-base junction of the input PNP transistor becoming forward biased and thereby acting as input
diode clamps. In addition to this diode action, there is also NPN parasitic action on the IC chip. This
transistor action can cause the output voltages of the op-amps to go to the V
CC
voltage level (or to ground
for a large overdrive) for the time during which an input is driven negative.
This is not destructive and normal output will set up again for input voltage higher than -0.3 V.
4. Short-circuits can cause excessive heating. Destructive dissipation can result from simultaneous short-
circuits on all amplifiers. These are typical values given for a single layer board (except for TSSOP which is
a two-layer board).
5. Human body model, 100 pF discharged through a 1.5 kΩ resistor into pin of device.
6. Machine model ESD, a 200 pF cap is charged to the specified voltage, then discharged directly into the IC
with no external series resistor (internal resistor < 5Ω), into pin-to-pin of device.
Absolute maximum ratings
Parameter
LM224A
LM324A
Unit
V
V
V
500
400
Infinite
50
-40 to +105
0 to +70
mA
°C
°C
°C
mW
±16 or 32
-0.3 to V
CC
+ 0.3
32
500
400
-65 to +150
150
103
100
83
31
32
33
700
150
1500
R
thja
°C/W
R
thjc
°C/W
V
4/20
LM224A-LM324A
Electrical characteristics
3
Electrical characteristics
Table 2.
Symbol
V
CC+
= +5V, V
CC-
= Ground, V
o
= 1.4V, T
amb
= +25°C (unless otherwise
specified)
Parameter
Input offset voltage
(1)
:
T
amb
= +25° C
T
min
≤
T
amb
≤
T
max
Input offset current:
T
amb
= +25° C
T
min
≤
T
amb
≤
T
max
Input bias current
(2)
:
T
amb
= +25° C
T
min
≤
T
amb
≤
T
max
Large signal voltage gain:
V
CC+
= +15 V, R
L
= 2 kΩ, V
o
= 1.4 V to 11.4 V
T
amb
= +25° C
T
min
≤
T
amb
≤
T
max
Supply voltage rejection ratio (R
s
≤
10 kΩ):
V
CC+
= 5 V to 30 V
T
amb
= +25° C
T
min
≤
T
amb
≤
T
max
Supply current, all Amp, no load:
– T
amb
= +25° C
V
CC
= +5V
V
CC
= +30 V
– T
min
≤
T
amb
≤
T
max
V
CC
= +5 V
V
CC
= +30 V
Input common mode voltage range:
V
CC
= +30 V
(3)
T
amb
= +25° C
T
min
≤
T
amb
≤
T
max
Common mode rejection ratio (R
s
≤
10 kΩ):
T
amb
= +25° C
T
min
≤
T
amb
≤
T
max
Output current source (V
id
= +1 V):
V
CC
= +15 V, V
o
= +2 V
Output sink current (V
id
= -1 V):
V
CC
= +15 V, V
o
= +2 V
V
CC
= +15 V, V
o
= +0.2 V
Min.
Typ.
Max.
Unit
V
io
2
3
5
20
40
100
200
mV
I
io
2
nA
I
ib
20
nA
A
vd
50
25
100
V/mV
SVR
65
65
110
dB
I
CC
0.7
1.5
0.8
1.5
1.2
3
1.2
3
mA
V
icm
0
0
70
60
20
10
12
80
V
CC
-1.5
V
CC
-2
V
CMR
dB
I
source
40
20
50
70
mA
I
sink
mA
µA
5/20
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