L272 / L272A — Dual Power Operational Amplifier
November 2013
L272 / L272A
Dual Power Operational Amplifier
Features
•
•
•
•
•
•
Output Current up to 0.7 A
Operates at Low Voltage (V
S(MIN)
= 4 V)
Low Saturation Voltage (I
P
= 0.5 A, V
O
= 1.5 V)
Thermal Shutdown (TSD = 160°C)
Ground-Compatible Inputs
Large Common Mode & Differential Mode Range
Description
The L272 and L272A are high-power dual operational
amplifiers provided in a MDIP 8-lead package. The oper-
ational amplifier is designed for low-impedance loads
and delivers output current up to 0.7 A. The L272A offers
tighter specifications for input bias current, input offset
voltage, and input offset current. The L272 and L272A
can be used in a wide range of applications, including
power supply, VCR, monitor, servo amplifier, compact
disc, etc.
MDIP 8L
Applications
•
•
•
•
•
Servo Amplifier
Power Supply
Compact Disc
VCR
Monitor
1
Ordering Information
Part Number
L272M
L272AM
Operating Temperature Range
-40 to +85
°
C
Top Mark
L272M
L272AM
Package
MDIP 8L
MDIP 8L
Packing Method
Rail
Rail
Block Diagram
OUT1
IN 1-
1
-
+
8
V
CC
2
7
IN 1+
OUT2
3
+
-
6
IN 2+
V
EE
/GND
4
5
IN 2-
(MDIP 8L)
Figure 1. Block Diagram
© 2001 Fairchild Semiconductor Corporation
L272 / L272A Rev. 1.2.0
www.fairchildsemi.com
1
L272 / L272A — Dual Power Operational Amplifier
Pin Descriptions
Pin Number
1
2
3
4
5
6
7
8
Name
OUTPUT1
VCC
OUTPUT2
VEE/GND
INPUT-2
INPUT+2
INPUT+1
INPUT-1
Amplifier Output 1
Positive Supply Voltage
Amplifier Output 2
Negative Supply Voltage (GND)
Amplifier Negative Input 2
Amplifier Positive Input 2
Amplifier Positive Input 1
Amplifier Negative Input 1
Description
Absolute Maximum Ratings
(1)
Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be opera-
ble above the recommended operating conditions and stressing the parts to these levels is not recommended. In addi-
tion, extended exposure to stresses above the recommended operating conditions may affect device reliability. The
absolute maximum ratings are stress ratings only. Values are at T
A
= 25°C unless otherwise noted.
Symbol
V
CC
V
I
V
I(DIFF)
I
O
I
P
T
OP
T
STG
, T
J
Note:
Supply Voltage
Input Voltage
Parameter
Value
40
V
S
±V
S
0.7
1
-40 to 85
-40 to 150
Unit
V
V
V
A
A
°C
°C
Differential Input Voltage
DC Output Current
Peak Output Current (Non-Repetitive)
Operating Temperature Range
Storage and Junction Temperature Range
1. The “Absolute Maximum Ratings” are those values beyond which the safety of the device cannot be guaranteed.
The device should not be operated at these limits. The parametric values defined in the Electrical Characteristics
tables are not guaranteed at the absolute maximum ratings.
Thermal Characteristics
Values are at T
A
= 25°C unless otherwise noted.
Symbol
P
D
R
θJA
Parameter
Total Power Dissipation (T
A
= 50°C)
Thermal Resistance, Junction to Ambient
Value
1
100
Unit
W
°C/W
© 2001 Fairchild Semiconductor Corporation
L272 / L272A Rev. 1.2.0
www.fairchildsemi.com
2
L272 / L272A — Dual Power Operational Amplifier
Electrical Characteristics (L272)
V
CC
= +12 V, V
EE
= -12 V; Values are at T
A
= 25°C unless otherwise noted.
Symbol
V
S
Parameter
Supply Voltage (V
CC
- V
EE
)
Conditions
V
O
= V
CC
/2,
V
CC
= 24 V, V
EE
= 0 V
V
O
= V
CC
/2,
V
CC
= 12 V, V
EE
= 0 V
Min.
4
Typ.
Max.
28
Unit
V
8.0
7.5
0.3
15
50
12.0
mA
11.0
2.5
60
250
μA
mV
nA
V/μs
kHz
kΩ
dB
μV
pA
dB
dB
I
S
Supply Current
I
BIAS
V
IO
I
IO
SR
GBW
R
I
G
V
e
N
I
N
CMRR
PSRR
Input Bias Current
Input Offset Voltage
Input Offset Current
Slew Rate
Gain-Bandwidth Product
Input Resistance
Large-Signal Voltage Gain
Input Noise Voltage
Input Noise Current
Common Mode Rejection Ratio
Supply Voltage Rejection Ratio
V
CC
= +15 V, V
EE
= -15 V
V
CC
= +5 V, V
EE
= -5 V
V
CC
= 24 V, V
EE
= 0 V,
I
P
= 0.1 A
V
CC
= 24 V, V
EE
= 0 V,
I
P
= 0.5 A
f = 1 kHz, R
L
= 10
Ω,
G
V
= 30 dB
f = 1 kHz, G
V
= 1 dB,
R
L
=
∞
V
O(pp)
=
±10
V
B = 20 kHz
B = 20 kHz
60
54
21.0
21.0
500
65
V
IN
= 1V
PP
, Unit Gain
1
350
75
10
200
75
62
23.0
V
O
Output Voltage Swing
V
22.5
60
0.5
160
dB
%
°C
C
S
THD
TSD
Channel Separation
Total Harmonic Distortion
Thermal Shutdown
Temperature
(2)
Note:
2. Guaranteed by design; not 100% tested in production.
© 2001 Fairchild Semiconductor Corporation
L272 / L272A Rev. 1.2.0
www.fairchildsemi.com
3
L272 / L272A — Dual Power Operational Amplifier
Electrical Characteristics (L272A)
V
CC
= +12 V, V
EE
= -12 V; Values are at T
A
= 25°C unless otherwise noted.
Symbol
V
S
Parameter
Supply Voltage (V
CC
- V
EE
)
Conditions
V
O
= V
CC
/2
V
CC
= 24 V, V
EE
= 0 V
V
O
= V
CC
/2,
V
CC
= 12 V, V
EE
= 0 V
Min.
4
Typ.
Max.
28
Unit
V
mA
mA
μA
mV
nA
V/μs
kHz
kΩ
dB
μV
pA
dB
dB
V
V
dB
%
°C
8.0
7.5
0.1
7
20
12.0
11.0
1.0
30
100
I
S
Supply Current
I
BIAS
V
IO
I
IO
SR
GBW
R
I
G
V
e
N
I
N
CMRR
PSRR
Input Bias Current
Input Offset Voltage
Input Offset Current
Slew Rate
Gain-Bandwidth Product
Input Resistance
Large-Signal Voltage Gain
Input Noise Voltage
Input Noise Current
Common Mode Rejection Ratio
Supply Voltage Rejection Ratio
V
CC
= +15 V, V
EE
= -15 V
V
CC
= +5 V, V
EE
= -5 V
V
CC
= 24 V, V
EE
= 0 V,
Ip = 0.1 A
V
CC
= 24 V, V
EE
= 0 V,
Ip = 0.5 A
f = 1 kHz, R
L
= 10
Ω,
G
V
= 30 dB
f = 1 kHz, G
V
= 1 dB,
R
L
=
∞
V
O(pp)
=
±10
V
B = 20 kHz
B = 20 kHz
60
54
21.0
21.0
500
65
V
IN
= 1V
PP
, Unit Gain
1
350
75
10
200
75
62
23.0
22.5
60
0.5
160
V
O
Output Voltage Swing
C
S
THD
TSD
Channel Separation
Total Harmonic Distortion
Thermal Shutdown
Temperature
(3)
Note:
3. Guaranteed by design; not 100% tested in production.
© 2001 Fairchild Semiconductor Corporation
L272 / L272A Rev. 1.2.0
www.fairchildsemi.com
4
L272 / L272A — Dual Power Operational Amplifier
Typical Performance Characteristics
Is,Supply Current(mA)
9
80
60
Gain(dB)
40
20
0
-20
8
7
6
5
0
4
8
12
16
20
24
28
VCC/VEE/Supply Voltage(V)
1.E+01
1.E+02
1.E+03
1.E+04
1.E+05
1.E+06
f, Frequency(Hz)
Figure 2. Supply Voltage vs. Supply
Current with No Load
-11
Output Voltage Swing (V)
11.5
Figure 3. Open-Loop Voltage Gain
Output Voltage Swing (V)
11
-12
100
200
300
400
500
600
700
10.5
100
200
300
400
500
600
700
IL, Load Current (mA)
0℃
25℃
50℃
75℃
100℃
0℃
IL, Load Current (mA)
25℃
50℃
75℃
100℃
Figure 4. Output Voltage Swing vs. Load Current
Figure 5. Output Voltage Swing vs. Load Current
60
CS(dB)
40
20
0
1.E+01
1.E+02
1.E+03
1.E+04
1.E+05
5.E+01
5.E+02
5.E+03
5.E+04
f,Frequency(Hz)
Figure 6. Channel Separation vs. Frequency
© 2001 Fairchild Semiconductor Corporation
L272 / L272A Rev. 1.2.0
www.fairchildsemi.com
5
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