Data Sheet
LOW POWER QUAD OPERATIONAL AMPLIFIERS
General Description
The AS324/324A consist of four independent, high
gain and internally frequency compensated operational
amplifiers. They are specifically designed to operate
from a single power supply. 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. Typical applications
include transducer amplifiers, DC gain blocks and
most conventional operational amplifier circuits.
The AS324/324A series are compatible with industry
standard 324. AS324A has more stringent input offset
voltage than AS324.
The AS324 is available in SOIC-14, DIP-14 and
TSSOP-14 packages, AS324A is available in SOIC-14
and DIP-14 packages.
AS324/324A
Features
·
·
·
·
·
·
Internally Frequency Compensated for Unity
Gain
Large Voltage Gain: 100dB (Typical)
Low Input Bias Current: 20nA (Typical)
Low Input Offset Voltage: 2mV (Typical)
Low Supply Current: 0.5mA (Typical)
Wide Power Supply Voltage Range:
Single Supply: 3V to 36V
Dual Supplies: ±1.5V to ±18V
Input Common Mode Voltage Range Includes
Ground
Large Output Voltage Swing: 0V to V
CC
-1.5V
Power Drain Suitable for Battery Operation
·
·
·
Application
·
·
·
Battery Charger
Cordless Telephone
Switching Power Supply
DIP-14
SOIC-14
TSSOP-14
Figure 1. Package Types of AS324/324A
Apr. 2007 Rev. 1.6
1
BCD Semiconductor Manufacturing Limited
Data Sheet
LOW POWER QUAD OPERATIONAL AMPLIFIERS
Pin Configuration
M/P/G Package
(SOIC-14/DIP-14/TSSOP-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
OUTPUT 4
INPUT 4-
INPUT 4+
GND
INPUT 3+
INPUT 3-
OUTPUT 3
AS324/324A
Figure 2. Pin Configuration of AS324/324A (Top View)
Functional Block Diagram
V
CC
6µA
4µA
100µA
Q5
Q6
Q2
-
INPUTS
+
Q10
Q8
Q9
Q1
Q3
Q4
Rsc
OUTPUT
Cc
Q7
Q11
Q12
50µA
Q13
Figure 3. Functional Block Diagram of AS324/324A (Each Amplifier)
Ordering Information
Circuit Type
Blank: AS324
A: AS324A
AS324
-
E1: Lead Free
Blank: Tin Lead
TR: Tape and Reel
Blank: Tube
Package
M: SOIC-14
P: DIP-14
G: TSSOP-14
BCD Semiconductor Manufacturing Limited
2
Apr. 2007 Rev. 1.6
Data Sheet
LOW POWER QUAD OPERATIONAL AMPLIFIERS
Ordering Information (Continuation)
Package
Temperature
Range
Part Number
Tin Lead
AS324M
SOIC-14
-40 to 85
o
C
DIP-14
AS324MTR
Lead Free
AS324M-E1
AS324MTR-E1
AS324AM-E1
AS324AMTR-E1
AS324P
AS324P-E1
AS324AP-E1
AS324GTR-E1
AS324G-E1
AS324P
Marking ID
Tin Lead
AS324M
AS324M
Lead Free
AS324M-E1
AS324M-E1
AS324AM-E1
AS324AM-E1
AS324P-E1
AS324AP-E1
EGS324
EGS324
Packing Type
Tube
Tape & Reel
Tube
Tape & Reel
Tube
Tube
Tape & Reel
Tube
AS324/324A
TSSOP-14
BCD Semiconductor's Pb-free products, as designated with "E1" suffix in the part number, are RoHS compliant.
Absolute Maximum Ratings (Note 1)
Parameter
Supply Voltage
Differential Input Voltage
Input Voltage
Total Power Dissipation (T
A
=25
o
C)
Operating Junction Temperature
Storage Temperature Range
Lead Temperature (Soldering, 10 Seconds)
Symbol
V
CC
V
ID
V
IN
DIP-14
P
D
T
J
T
STG
T
LEAD
SOIC-14
TSSOP-14
150
-65 to 150
260
Value
40
40
-0.3 to 40
1130
800
710
o
C
o
Unit
V
V
V
mW
C
o
C
Note 1: Stresses greater than those listed under "Absolute Maximum Ratings" may cause permanent damage to
the device. These are stress ratings only, and functional operation of the device at these or any other conditions
beyond those indicated under "Recommended Operating Conditions" is not implied. Exposure to "Absolute Max-
imum Ratings" for extended periods may affect device reliability.
Recommended Operating Conditions
Parameter
Supply Voltage
Ambient Operating Temperature Range
Symbol
V
CC
T
A
Min
3
-40
Max
36
85
Unit
V
o
C
Apr. 2007 Rev. 1.6
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BCD Semiconductor Manufacturing Limited
Data Sheet
LOW POWER QUAD OPERATIONAL AMPLIFIERS
Electrical Characteristics
Limits in standard typeface are for T
A
=25
o
C,
bold
typeface applies over T
A
=-40
o
C to 85
o
C (Note 2), V
CC
=5V, GND=0V,
unless otherwise specified.
Parameter
Symbol
Test Conditions
V
O
=1.4V, R
S
=0
Ω,
V
CC
=5V to 30V
AS324
AS324A
Min
Typ
2
2
Max
5
7
3
5
Average Temperature Coeffi-
cient of Input Offset Voltage
Input Offset Current
Input Bias Current
Input Common Mode Voltage
Range (Note 3)
Supply Current
Large Signal Voltage Gain
Common Mode Rejection
Ratio
Power
Ratio
Supply
Rejection
∆V
IO
/∆T T
A
=-40 to 85
o
C
I
IO
I
BIAS
V
IR
I
CC
G
V
CMRR
PSRR
CS
Source
Output Current
Sink
I
SINK
I
SOURCE
I
IN
+ - I
IN
-, V
CM
=0V
I
IN
+ or I
IN
-, V
CM
=0V
V
CC
=30V
T
A
=-40 to 85
o
C, R
L
=∞
V
CC
=30V
V
CC
=5V
85
80
60
60
70
60
-120
20
20
10
5
12
50
40
26
26
27
27
5
20
30
mV
28
V
60
µA
mA
15
mA
40
dB
mA
100
dB
70
dB
0
1.0
0.7
100
7
5
20
30
100
100
200
V
CC
-1.5
AS324/324A
Unit
mV
mV
µV/
o
C
nA
nA
V
mA
dB
Input Offset Voltage
V
IO
3
1.2
V
CC
=15V, R
L
≥
2kΩ, V
O
=1V to 11V
DC, V
CM
=0 to (V
CC
-1.5)V
V
CC
=5 to 30V
f=1kHz to 20kHz
V
IN
+=1V, V
IN
-=0V, V
CC
=15V, V
O
=2V
V
IN
+=0V, V
IN
-=1V, V
CC
=15V, V
O
=2V
V
IN
+=0V, V
IN
-=1V, V
CC
=15V, V
O
=0.2V
Channel Separation
Output Short Circuit Current
to Ground
I
SC
V
CC
=15V
V
CC
=30V, R
L
=2kΩ
V
OH
Output Voltage Swing
V
OL
V
CC
=30V, R
L
=10kΩ
V
CC
=5V, R
L
= 10kΩ
Note 2: Limits over the full temperature are guaranteed by design, but not tested in production.
Apr. 2007 Rev. 1.6
4
BCD Semiconductor Manufacturing Limited
Data Sheet
LOW POWER QUAD OPERATIONAL AMPLIFIERS
Electrical Characteristics (Continued)
Note 3: The input common-mode voltage of either input signal voltage should not be allowed to go negatively by
more than 0.3V (at 25
o
C
). The upper end of the common-mode voltage range is V
CC
-1.5V (at 25
o
C
), but either or
both inputs can go to +36V without damages, independent of the magnitude of the V
CC
.
AS324/324A
Typical Performance Characteristics
15
30
27
24
Input Voltage (+V
DC
)
Input Current (nA)
21
18
15
12
9
6
3
10
NEGATIVE
POSITIVE
5
0
0
5
10
15
0
-25
0
25
50
o
75
100
125
Power Supply Voltage (+V
DC
)
Temperature ( C)
Figure 4. Input Voltage Range
Figure 5. Input Current
2.0
1.8
1.6
120
105
Supply Current (mA)
1.2
1.0
0.8
0.6
Voltage Gain (dB)
1.4
90
R
L
=2K
Ω
R
L
=20K
Ω
75
0.4
0.2
0.0
0
5
10
15
20
25
30
35
40
60
0
8
16
24
32
40
Supply Voltage (V)
Power Supply Voltage (V)
Figure 6. Supply Current
Figure 7. Voltage Gain
Apr. 2007 Rev. 1.6
5
BCD Semiconductor Manufacturing Limited
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