Diodes AS324A User Manual
AS324/324A
Document number: DS36827 Rev. 2 - 2
1 of 14
www.diodes.com
January 2014
© Diodes Incorporated
AS324/324A
A Product Line of
Diodes Incorporated
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.
The AS324A has more stringent input offset voltage than AS324.
The AS324 is available in SOIC-14, DIP-14 and TSSOP-14
packages, and the AS324A is available in SOIC-14 package.
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 VCC -1.5V
Power Drain Suitable for Battery Operation
Applications
Battery Charger
Cordless Telephone
Switching Power Supply
1
2
3
4
5
6
7
14
13
12
11
10
9
8
INPUT 1-
INPUT 1+
INPUT 2-
INPUT 2+
OUTPUT 1
OUTPUT 2
V
CC
OUTPUT 4
INPUT 4-
INPUT 4+
GND
INPUT 3+
INPUT 3-
OUTPUT 3
INPUT 1-
1
2
3
4
5
6
7
14
13
12
11
10
9
8
INPUT 1+
INPUT 2-
INPUT 2+
OUTPUT 1
OUTPUT 2
V
CC
OUTPUT 4
INPUT 4-
INPUT 4+
GND
INPUT 3+
INPUT 3-
OUTPUT 3
LOW POWER QUAD OPERATIONAL AMPLIFIERS
Pin Assignments
(SOIC-14/TSSOP-14 / M/G Package) (DIP-14/ P Package)
(Top View) (Top View)
AS324/324A
Document number: DS36827 Rev. 2 - 2
2 of 14
www.diodes.com
January 2014
© Diodes Incorporated
AS324/324A
A Product Line of
Diodes Incorporated
AC
Line
SMPS
R2
Current
Sense
R7
R8
Battery
Pack
R4
R3
AZ431
R5
R1
Opto
Isolator
V
CC
GND
GND
1/4
AS324/A
+
-
1/4
AS324/A
R6
+
-
V
CC
R6 100k
V
O
R5
100k
R1 100k
R2 100k
R3 100k
R4 100k
+V
1
+V
2
+V
3
+V
4
1/4 AS324/A
+
-
R1 910k
V
O
R2 100k
R3 91k
V
IN(+)
V
CC
R
L
1/4 AS324/A
-
+
Typical Applications Circuit
Battery Charger
DC Summing Amplifier Power Amplifier
AS324/324A
Document number: DS36827 Rev. 2 - 2
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January 2014
© Diodes Incorporated
AS324/324A
A Product Line of
Diodes Incorporated
V
CC
R4
3k
R3
2k
+
-
2V
+
-
2V
I1 I2
1mA
1/4 AS324/A
R1
2k
R2
-
+
R4 100k
V
CC
R3
1M
R1 100k
R2 1M
C1
0.1F
C
IN
R5
100k
C
O
V
O
1/4 AS324/A
R
L
10k
C2
10F
AV=1+R2/R1
AV=11 (As shown)
-
+
AC
R
B
6.2k
R5 100k
R3 100k
R4
100k
R2 100k
R1 1M
V
O
V
CC
1/4 AS324/A
0.001F
-
+
V
O
R2 16kR1 16k
V
IN
R3
100k
1/4 AS324/A
R4
100k
C2
0.01F
C1 0.01F
f
O
V
O
0
fO=1kHz
Q=1
AV=2
+
-
Typical Applications Circuit (Cont.)
Fixed Current Sources AC Coupled Non-Inverting Amplifier
Pulse Generator DC Coupled Low-Pass RC Active Filter
AS324/324A
Document number: DS36827 Rev. 2 - 2
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January 2014
© Diodes Incorporated
AS324/324A
A Product Line of
Diodes Incorporated
Q2
Q4
Q3
Q1
Q8
Q9
6A
4A
Q10
Q11
50A
Q5
Q6
Q13
Rsc
Cc
100A
Q7
INPUTS
+
-
OUTPUT
Q12
V
CC
Symbol
Parameter
Rating
Unit
V
CC
Supply Voltage
40
V
V
ID
Differential Input Voltage
40
V
V
IN
Input Voltage
-0.3 to 40
V
PD
Total Power Dissipation (TA = +25oC)
DIP-14
1130
mW
SOIC-14
800
TSSOP-14
710
TJ
Operating Junction Temperature
+150
C
T
STG
Storage Temperature Range
-65 to +150
C
T
LEAD
Lead Temperature (Soldering, 10 Seconds)
+260
C
Symbol
Parameter
Min
Max
Unit
V
CC
Supply Voltage
3
36
V
T
A
Ambient Operating Temperature Range
-40
+85
C
Functional Block Diagram
Absolute Maximum Ratings (Note 1)
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 Maximum Ratings” for extended periods may affect device reliability.
Recommended Operating Conditions
AS324/324A
Document number: DS36827 Rev. 2 - 2
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www.diodes.com
January 2014
© Diodes Incorporated
AS324/324A
A Product Line of
Diodes Incorporated
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
V
IO
Input Offset Voltage
VO = 1.4V, RS = 0Ω,
V
CC
= 5V to 30V
AS324
– 2 5
mV
–
–
7
AS324 A
– 2 3
mV
–
–
5
∆VIO/∆T
Average Temperature Coefficient of Input
Offset Voltage
TA = -40 to +85oC
– 7 –
µV/oC
I
IO
Input Offset Current
IIN+ - IIN-, V
CM
= 0V
– 5 30
nA
–
–
100
I
BIAS
Input Bias Current
IIN+ or IIN-, V
CM
= 0V
–
20
100
nA
–
–
200
VIR
Input Common Mode Voltage Range (Note 3)
V
CC
= 30V
0
–
VCC-
1.5
V
ICC
Supply Current
TA = -40 to +85oC,
RL = ∞
V
CC
= 30V
–
1.0
3
mA
V
CC
= 5V
–
0.7
1.2
G
V
Large Signal Voltage Gain
V
CC
= 15V, RL ≥ 2kΩ, VO = 1V to 11V
85
100
–
dB
80
–
–
CMRR
Common Mode Rejection Ratio
DC, V
CM
= 0 to (VCC-1.5)V
60
70
–
dB
60
–
–
PSRR
Power Supply Rejection Ratio
V
CC
= 5 to 30V
70
100
–
dB
60
–
–
CS
Channel Separation
f = 1kHz to 20kHz
–
-120 – dB
I
SOURCE
Output Current
Source
VIN+ = 1V, VIN- = 0V, V
CC
= 15V, VO =
2V
20
40
mA
20
–
–
I
SINK
Sink
VIN+ = 0V, VIN- = 1V, V
CC
= 15V, VO =
2V
10
15
–
mA
5
–
–
VIN+ = 0V, VIN- = 1V, V
CC
= 15V, VO =
0.2V
12
50 – µA
I
SC
Output Short Circuit Current to Ground
V
CC
= 15V
–
40
60
mA
V
OH
Output Voltage Swing
V
CC
= 30V, RL = 2kΩ
26 – –
V
26
–
–
V
CC
= 30V, RL = 10kΩ
27
28 – 27
–
–
V
OL
V
CC
= 5V, RL = 10kΩ
– 5 20
mV
–
–
30
θ
JC
Thermal Resistance (Junction to Case)
DIP-14
–
24.78
–
o
C/W
SOIC-14
–
36.78
–
Electrical Characteristics (Limits in standard typeface are for T
V
= 5V, GND = 0V, unless otherwise specified.)
CC
= +25oC, bold typeface applies over TA = -40oC to +85oC (Note 2),
A
Notes: 2. Limits over the full temperature are guaranteed by design, but not tested in production.
3. The input common-mode voltage of either input signal voltage should not be allowed to go negatively by more than 0.3V (at +25oC). The upper end of the
common-mode voltage range is VCC -1.5V (at +25oC), but either or both inputs can go to +36V without damages, independent of the magnitude of the
V
。
CC
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