L272 • L272A
Dual Power Operational Amplifier
L272 • L272A Dual Power Operational Amplifier
June 2001
Revised May 2005
General Description
The L272 and L272A are high-power dual operational
amplifier provided as a 8- DIP and 16-SOP package. The
operational amplifier is designed for low impedance loads
and will deliver output current up to 0.7A. The L272A offers
tighter specifications for input bias current, input offset voltage and input offset currents. The L272 and L272 A can be
used in a wide range of applic ations including po wer supply, VCR, monitor, servo amplifier, compact disc, etc.
Features
■ Output Current up to 0.7A
■ Operates at Low Voltage (VS(MIN) = 4V)
■ Low Saturation Voltage (I
■ Thermal Shutdown (T SD = 160×C ) Ground Compati ble
Inputs
■ Ground Compatible Inputs
■ Large Common Mode & Differential Mode Range
= 0.5A, VO = 1.5V)
p
Applications
• Servo Amplifier
• Power Supply
• Compact Disc
•VCR
•Monitor
Ordering Code:
Product Number Package Packing Operating Temperature
L272M 8-DIP Tube
L272D2 16-SOP Tube
L272D2TF 16-SOP Tape and Reel
L272AM 8-DIP Tube
L272AD2 16-SOP Tube
L272AD2TF 16-SOP Tape and Reel
25q
C to 85qC
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Internal Block Diagram
L272 • L272A
Pin Definitions
Pin Number
8-DIP 16-SOP
1 16 OUTPUT1 Amp Output 1
21 V
3 2 OUTPUT2 Amp Output 2
44/5/12/13 V
57 INPUT
68 INPUT
79 INPUT
8 10 INPUT
Pin Name Pin Function Description
CC
/GND Negative Supply Voltage (GND)
EE
2 Amp Negative Input 2
2 Amp Positive Input 2
1 Amp Positive Input 1
1 Amp Negative Input 1
Positive Supply Voltage
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Absolute Maximum Ratings(Note 1)
Parameter Symbol Value Unit s
Supply Voltage V
Input Voltage V
Differential Input Voltage V
I(DIFF)
DC Output Current I
Peak Output Current (Non Repetitive) I
Power Dissipation At: T
50qCP
amb
Operating Temperature Range Top
Storage and Junction Temperature T
stg
CC
I
O
P
tot
, T
j
40 V
V
S
❏
r
V
S
V
V
0.7 A
1A
1W
25 to 85
40 to 150
q
C
q
C
Thermal Data
Parameter Symbol Value Unit
Thermal Resistance Junction-Ambient Maximum
8-DIP R
T
ja 100
q
C/W
16-SOP 190
Note 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 param et ric values defined in th e Electrical Characte ris t ic s tab les are not guaranteed at the absolute maximum ratings.
Electrical Characteristics (L272)
(VCC 12V, VEE 12V, TA 25qC unless otherwise specified)
Supply Voltage (VCC - VEE)V
Supply Current I
Input Bias Current I
Input Offset Voltage V
Input Offset Current I
Slew Rate SR V
Gain-Bandwidth Product GBW 350 kHz
Input Resistance R
Large Signal G
Input Noise Voltage e
Input Noise Current I
Common Mode Rejection Ratio CMRR 60.0 75.0 dB
Supply Voltage Rejection Ratio PSRR VCC 15V, VEE 15V
Output Voltage Swing VOVCC 24V, VEE 0V
Channel Separation CSf 1 kHz; RL 10:, GV 30 dB 60.0 dB
Total Harmonic Distortion THD f 1 kHz; GV 1dB, RL • 0.5 %
Thermal Shutdown Temperature (Note 2) TSD 160
Note 2: Guaranteed by design. Not 100% tested in production.
Parameter Symbol Conditions Min Typ Max Units
S
VO VCC/2
S
BIAS
IO
IO
N
24V, VEE 0V 8.0 12.0 mA
V
CC
VCC 12V, VEE 0V 7.5 11.0 mA
1VPP, Unit Gain 1.0 V/Ps
IN
I
VVO(pp)
N
r 10V 65.0 75.0 dB
B 20 kHz 10.0
B 20 kHz 200 pA
VCC 5V, VEE 5V
IP 0.1A 21.0 23.0 V
IP 0.5A 21.0 22.5 V
4.0 28.0 V
0.3 2.5
15.0 60.0 mV
50.0 250 nA
500 k
54.0 62.0 dB
P
P
q
L272 • L272A
A
:
V
C
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Electrical Characteristics (L272A)
(VCC 12V, VEE 12V, TA 25qC unless otherwise specified)
Parameter Symbol Conditions Min Typ Max Units
Supply Voltage (VCC - VEE)V
Supply Current I
L272 • L272A
S
S
VO VCC/2
V
24V, VEE 0V 8.0 12.0 mA
CC
VCC 12V, VEE 0V 7.5 11.0 mA
Input Bias Current I
Input Offset Voltage V
Input Offset Current I
Slew Rate SR V
BIAS
IO
IO
1VPP, Unit Gain 1.0 V/Ps
IN
Gain-Bandwidth Product GBW 350 kHz
Input Resistance R
Large Signal G
Input Noise Voltage e
Input Noise Current I
I
VVO(pp)
N
N
r 10V 65.0 75.0 dB
B 20 kHz 10.0
B 20 kHz 200 pA
Common Mode Rejection Ratio CMRR 60.0 75.0 dB
Supply Voltage Rejection Ratio PSRR VCC 15V, VEE 15V
5V, VEE 5V
V
CC
Output Voltage Swing VOVCC 24V, VEE 0V
I
0.1A 21.0 23.0 V
P
0.5A 21.0 22.5 V
I
P
Channel Separation CSf 1 kHz; RL 10:, GV 30 dB 60.0 dB
Total Harmonic Distortion THD f 1 kHz; G
1dB, RL • 0.5 %
V
Thermal Shutdown Temperature (Note 2) TSD 160
Note 3: Guaranteed by design. Not 100% tested in production.
4.0 28.0 V
0.1 1.0
7.0 30.0 mV
20.0 100 nA
500 k
54.0 62.0 dB
P
A
:
P
V
q
C
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Typical Performance Characteristics
L272 • L272A
FIGURE 1. Supply Voltage vs.
Supply Current with No Load
FIGURE 3. Output voltage Swing vs. Load Current
FIGURE 2. Open Loop Voltage Gain
FIGURE 4. Output Voltage Swing vs. Load Current
FIGURE 5. Channel Separation vs. Frequency
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Application
L272 • L272A
Tilt Coil Current Circuit in Monitor, 8-DIP Package
!
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Physical Dimensions inches (millimeters) unless otherwise noted
L272 • L272A
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Physical Dimensions inches (millimeters) unless otherwise noted (Continued)
L272 • L272A Dual Power Operational Amplifier
Fairchild does not assume any responsibility for use of an y circuitry described, no circuit patent licenses are imp lied and
Fairchild reserves the right at any time without notice to change said circuitry and specifications.
LIFE SUPPORT POLICY
FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT
DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD
SEMICONDUCTOR CORPORATION. As used herein:
1. Life support devices or systems are devices or syste ms
which, (a) are intended for surgical implant into the
body, or (b) support or sustain life, and (c) whose failure
to perform when properly used in accordance with
instructions for use provided in the labeling, can be reasonably expected to result in a significant inju ry to the
user.
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2. A critical component in any componen t of a life support
device or system whose failu re to perform can be reasonably expected to cause the failure of the li fe su pp ort
device or system, or to affect its safety or effectiveness.
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