LESHAN RADIO COMPANY, LTD.
General Description
The
LR324
consists of four independent, high gain and
internally frequency compensated operational amplifi-
ers. It is specifically designed to operate from a single
power supply. Operation from split power supply is
also possible and the low power supply current drain is
independent of the magnitude of the power supply
voltages.
The
LR324
series are Compatible with Industry stan-
dard 324.
The
LR324
series are available in 2 Packages: DIP-14
and SOIC-14.
Features
Internally Frequency Compensated
Large Voltage Gain
Low Input Bias Current
Low Input Offset Voltage
Large Output Voltage Swing
Wide Power Supply Voltage Range:
Single Supply 3V to
30V
or
Dual Supplies
±
1.5V to
±
15V
Low Supply Current Drain:
600
A
Applications
Battery Charger
Cordless Telephone
Switching Power Supply
DIP-14
SOIC-14
Figure 1. Package Types of
LR324
LR324–1/10
LESHAN RADIO COMPANY, LTD.
Pin Configuration
M Package/P Package
(SOIC-14/DIP-14)
OUTPUT 1
INPUT 1-
INPUT 1+
V
CC
INPUT 2+
INPUT 2-
OUTPUT 2
1
2
3
4
5
6
7
14
13
12
11
10
9
8
Top View
Figure 2. Pin Configuration of
LR324
OUTPUT 4
INPUT 4-
INPUT 4+
GND
INPUT 3+
INPUT 3-
OUTPUT 3
Functional Block Diagram
V
CC
6uA
4uA
100uA
Q5
Q6
Q2
INPUT-
Q1
Q3
Q4
Rsc
OUTPUT
INPUT+
Q11
Q10
Q8
Q9
Q12
50uA
Q13
Cc
Q7
Figure 3. Functional Block Diagram of
LR324
(Each Amplifier)
LR324–2/10
LESHAN RADIO COMPANY, LTD.
Ordering Information
Package
SOIC-14
Temperature Range
-40 to 85
o
C
Part Number
LR324M
Packing Type
Tube/Reel
DIP-14
LR324P
Tube
Some of our products are available in Lead Free packages; If buyers need Lead Free product, please add -E1 after
the part number in your order. For example,
LR358M
is a standard tin-lead product,
LR358M-E1
means a Lead
Free product.
Absolute Maximum Ratings
Parameter
Power Supply Voltage
Differential Input Voltage
Input Voltage
Symbol
V
CC
V
ID
V
IC
Value
32
32
-0.3 to
32
Unit
V
V
V
Output Short Circuit to Ground (One Amplifier)
V
CC
12V and T
A
= 25
o
C
Power Dissipation
Operating Temperature Range
Storage Temperature Range
Continuous
P
D
T
OP
T
STG
720
-30 to 85
-55 to 125
mW
o
C
C
o
LR324–3/10
LESHAN RADIO COMPANY, LTD.
Electrical Characteristics
CC
=+5V,
GND=0V, T
A
=25
o
C unless otherwise specified.
Test Conditions
Min
Typ
Max
Unit
Parameter
Input Offset Voltage
Input Bias Current
Input Offset Current
Input Common
Mode Voltage Range
Symbol
V
IO
I
BIAS
I
IO
V
IR
V
O
: 1.4V, RS: 0 , V
CC
: from 5V to 15V
I
IN
+ or I
IN
-, V
CM
=0V
I
IN
+ or I
IN
-
,
V
CM
=0V
V
CC
=15V
R
L
=
Over full tem-
perature range on all
V
CC
=30V
OP Amps
V
CC
=15V, R
L
V
O
=1V to 11V
25
65
65
0
2
45
5
7
250
50
V
CC
-1.5
mV
nA
nA
V
Supply Current
I
CC
0.6
1.5
100
80
100
120
20
10
40
20
3
2
mA
Large Signal
Voltage Gain
Common Mode
Rejection Ratio
Power Supply
Rejection Ratio
Channel Separation
(Note 6)
Source
Output
Current
Sink
G
V
CMRR
PSRR
CS
I
SOURCE
I
SINK
dB
dB
dB
dB
mA
mA
DC, V
CC
=15V,
V
CM
=0V to (V
CC
-1.5)V
V
CC
=5V to 15V
f=1KHz to 20KHz (Input Referred)
V+=1V, V- =0V, V
CC
=15V, V
O
=2V
V- =1V, V+=0V, V
CC
=15V, V
O
=2V
LR324–4/10
LESHAN RADIO COMPANY, LTD.
Typical Performance Characteristics
8
7
25
30
Input Voltage (V)
6
Input Current (nA)
NEGATIVE
5
4
20
V
CC
=15V
15
POSITIVE
3
2
1
0
0
2
4
6
8
10
5
0
-40
-20
0
20
40
60
80
100
120
Power Supply Voltage (V)
Temperature (
o
C)
Figure 4. Input Voltage Range
Figure 5. Input Current
4.0
3.5
120
Supply Current Drain (mA)
V
CC
110
I
D
3.0
mA
A
Voltage Gain (dB)
2.5
2.0
1.5
1.0
0.5
0.0
0
2
4
6
8
10
12
14
16
18
20
100
90
R
L
=2K
R
L
=20K
80
T
A
= 0 C TO 85 C
70
o
o
60
0
2
4
6
8
10
12
14
16
18
20
Power Supply Voltage (V)
Power Supply Voltage (V)
Figure 6. Supply Current
Figure 7. Voltage Gain
110
3
Voltage (V)
100
2
1
0
3
V
CC
=15V
R
L
= 2K
80
Voltage Gain (dB)
70
60
50
40
30
20
10
0
1HZ
10HZ
100HZ
1kHZ
10kHZ
100kHZ
1MHZ
V
IN
V
CC
/2
0.1uF
R 10M
Output
90
T
A
: -40 C TO 85 C V
CC
:10V TO 15V
DC
o
o
2
V
CC
V
O
Voltage (V)
1
0
Input
0
10
20
30
40
50
Frequency (Hz)
Time (uS)
Figure 8. Open Loop Frequency Response
Figure 9. Voltage Follower Pulse Response
LR324–5/10
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