Fairchild Semiconductor L272 Datasheet
L272
Dual Power Operational Amplifier
www.fairchildsemi.com
Features
• Output Current upto 0.7A
• Operates at Low Voltage (V
• Low Saturation Voltage (Ip=0.5A, V
• Thermal Shutdown (TSD=160°C)
• Ground Compatibl e In put s
• Large Common mode & Differential mode Range
S(MIN)
=4V)
=1.5V)
O
Applications
• Servo Amplifier
• Power Supply
• Compact Disc
•VCR
• Monitor
Internal Block Diagram
Description
The L272 is a high-power dual operational amplifier
provided as a 8-DIP and 16-SOP package. The oper ational
amplifier is designed for low impedance loads and will
deliver outp ut c urren t upt o 0.7 A. Th e L27 2 ca n be used i n a
wide range of applications including power supply, VCR,
monitor, servo amplifier, compact disc, etc
8-DIP
1
16-SOP
1
OUT1
OUT2
V
EE
©2001 Fairchild Semiconductor Corporation
Vcc
/GND
1
-
+
2
3
+
-
4
(8-DIP)
8
7
6
5
IN 1-
IN 1+
IN 2+
IN 2-
VCC
VCC
OUT2
OUT2
NC
NC
VEE/GND
VEE/GND
GND
GND
NC
NC
IN2-
IN2-
IN2+
IN2+
OUT1
1
1
2
2
3
3
4
4
5
5
6
6
-
-
7
7
+
+
89
89
(16-SOP)
-
-
+
+
16
16
15
15
14
14
13
13
12
12
11
11
10
10
OUT1
NC
NC
NC
NC
GND
GND
GND
GND
NC
NC
IN1-
IN1-
IN1+
IN1+
Rev. 1.0.2
L272
PIN Definitions
Pin Number
8-DIP 16-SOP
Pin Name Pin Function Descrition
1 16 OUTPUT1 Amp Output 1
2 1 VCC Positive Supply Voltage
3 2 OUTPUT2 Amp Output 2
4 4/5/12/13 VEE/GND Negative Supply Voltage (GND)
5 7 INPUT-2 Amp Negative Input 2
6 8 INPUT+2 Amp Positive Input 2
7 9 INPUT+1 Amp Positive Input 1
8 10 INPUT-1 Amp Negative Input 1
Absolute Maximum Ratings
Parameter Symbol Value Unit
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
=50°CP
amb
Operating Temperature Range T
Storage and Junction Temperature T
stg
CC
O
P
tot
op
I
, T
j
40 V
V
S
±V
S
0.7 A
1A
1W
-25 to 85 °C
-40 to 150 °C
V
V
Thermal Data
Parameter Symbol Value Unit
Thermal Resistance Junction-Ambient Max.
8-DIP
16-SOP
Rθja 100
190
°C/W
2
Electrical Characteristics
( Vcc = +12V, VEE = -12V, Ta = 25°C unless otherwise specified )
Parameter Symbol Conditions Min. Typ. Max. Unit
Supply Voltage (V
Supply Current
Input Bias Current I
Input Offset Voltage V
Input Offset Current I
Slew Rate SR Vin = 1Vpp, Unit Gain - 1 - V/µs
Gain-Bandwidth Product GBW - - 350 - KHz
Input Resistance R
Lange Signal G
Input Noise Voltage
Input Noise Current I
Common Mode Rejection Ratio CMRR - 60 75 - dB
Supply Voltage Rejection Ratio PSRR
Output Voltage Swing V
Channel Separation C
Total Harmonic Distortion THD f = 1kHz, G
Thermal stutdown Temperature
(Note1)
- VEE)V
CC
S
I
S
BIAS
IO
IO
I
V
e
N
N
O
S
TSD - - 160 - °C
4-28V
VO = VCC/2
V
=24V, VEE=0V
CC
V
=12V, VEE=0V
CC
-8
7.5
12
11
--0.32.5µA
- - 15 60 mV
- - 50 250 nA
- 500 - - KΩ
V
= ±10V 65 75 - dB
O(pp)
B = 20KHz - 10 - µV
B = 20KHz - 200 - pA
V
=+15V, VEE = -15V
CC
V
=+5V, VEE = -5V
CC
54 62 - dB
VCC = 24V, VEE = 0V
Ip = 0.1A
Ip = 0.5A
f = 1kHz; RL = 10Ω,
G
= 30dB
V
= 1dB,RL =
V
∞
21
21
23
22.5
-
-
-60-dB
-0.5- %
L272
mA
mA
V
V
Note :
1. Guaranteed by design. Not 100% tested in production.
3
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