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LM272D [STMICROELECTRONICS]

DUAL POWER OPERATIONAL AMPLIFIER; 双电源运算放大器
LM272D
型号： LM272D
厂家： ST    ST
描述：

DUAL POWER OPERATIONAL AMPLIFIER
双电源运算放大器

运算放大器
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L272  
DUAL POWER OPERATIONAL AMPLIFIERS  
.
.
.
.
OUTPUT CURRENT TO 1 A  
OPERATES AT LOW VOLTAGES  
SINGLE OR SPLIT SUPPLY  
LARGE COMMON-MODE AND DIFFEREN-  
TIAL MODE RANGE  
GROUND COMPATIBLE INPUTS  
LOW SATURATION VOLTAGE  
THERMAL SHUTDOWN  
.
.
.
Powerdip  
(8 + 8)  
DESCRIPTION  
The L272 is a monolithic integratedcircuits in Pow-  
erdip, Minidip and SO packagesintendedfor use as  
power operational amplifiers in a wide range of ap-  
plications including servo amplifiers and power sup-  
plies, compacts disc, VCR, etc.  
Minidip  
SO16 (Narrow)  
ORDERING NUMBERS : L272 (Powerdip)  
L272M (Minidip)  
L272D (SO16 Narrow)  
The high gain and high output power capability pro-  
vide superior performance whatever an operational  
amplifier/powerbooster combination is required.  
PIN CONNECTIONS (top view)  
L272M  
L272D  
1/10  
January 1995  
L272  
BLOCK DIAGRAMS  
L272  
L272D  
L272M  
SCHEMATIC DIAGRAM (one only)  
2/10  
L272  
ABSOLUTE MAXIMUM RATINGS  
Symbol  
Parameter  
Value  
28  
Unit  
Vs  
Vi  
Supply Voltage  
V
Input Voltage  
Vs  
Vi  
Differential Input Voltage  
DC Output Current  
± Vs  
1
Io  
A
A
Ip  
Peak Output Current (non repetitive)  
1.5  
Ptot  
Power Dissipation at:  
Tamb = 80°C (L272), Tamb = 50°C (L272M), Tcase = 90 °C (L272D)  
Tcase = 75 °C (L272)  
1.2  
5
W
W
Top  
Operating Temperature Range (L272D)  
Storage and Junction Temperature  
– 40 to 85  
°C  
°C  
Tstg, Tj  
– 40 to 150  
THERMAL DATA  
Symbol  
Parameter  
Powerdip  
SO16  
Minidip  
* 70  
100  
Unit  
oC/W  
oC/W  
oC/W  
Rth j-case  
Rth j-amb  
Thermal Resistance Junction-pins  
Max.  
Max.  
Max.  
15  
70  
–
–
–
Thermal Resistance Junction-ambient  
Rth j-alumina Thermal Resistance Junction-alumina  
Thermal resistance junction-pin 4  
** 50  
–
*
** Thermal resistance junctions-pins with the chip soldered on the middle of an alumina supporting substrate measuring  
15x 20mm; 0.65mm thickness and infinite heatsink.  
ELECTRICAL CHARACTERISTICS (VS = 24V, Tamb = 25oC unless otherwise specified)  
Symbol  
Parameter  
Supply Voltage  
Test Conditions  
Min. Typ. Max. Unit  
Vs  
4
28  
V
VS  
2
Is  
Quiescent Drain Current  
VO =  
Vs = 24V  
Vs = 12V  
8
7.5  
12  
11  
mA  
mA  
Ib  
Vos  
Ios  
SR  
B
Input Bias Current  
Input Offset Voltage  
Input Offset Current  
Slew Rate  
0.3  
15  
50  
1
2.5  
60  
µA  
mV  
nA  
250  
V/µs  
kHz  
kΩ  
Gain-bandwidth Product  
Input Resistance  
O. L. Voltage Gain  
350  
Ri  
500  
60  
Gv  
f = 100Hz  
f = 1kHz  
70  
50  
dB  
dB  
eN  
IN  
Input Noise Voltage  
B = 20kHz  
B = 20kHz  
f = 1kHz  
10  
200  
75  
µV  
pA  
dB  
dB  
Input Noise Current  
CRR  
SVR  
Common Mode Rejection  
Supply Voltage Rejection  
60  
54  
21  
f = 100Hz, RG = 10kΩ, VR = 0.5V  
Vs = 24V  
70  
62  
56  
Vs = ± 12V  
Vs = ± 6V  
Vo  
Cs  
Output Voltage Swing  
Channel Separation  
Ip = 0.1A  
Ip = 0.5A  
23  
22.5  
V
V
f = 1 kHz; RL =10Ω, Gv = 30dB  
Vs = 24V  
dB  
60  
60  
Vs = ± 6V  
d
Distortion  
f = 1kHz, Gv = 3 dB, Vs = 24V, RL = ∞  
0.5  
%
Tsd  
Thermal Shutdown Junction  
Temperature  
145  
°C  
3/10  
L272  
Figure 1 : Quiescent Current versus  
Figure 2 : Quiescent Drain Current versus  
SupplyVoltage  
Temperature  
Figure 3 : Open Loop Voltage Gain  
Figure 4 : Output Voltage Swing versus  
Load Current  
Figure 5 : Output Voltage Swing versus  
Figure 6 : Supply Voltage Rejection versus  
Load Current  
Frequency  
4/10  
L272  
Figure 7 : Channel Separation versus  
Figure 8 : Common Mode Rejection versus  
Frequency  
Frequency  
APPLICATION SUGGESTION  
NOTE  
In order to avoid possible instability occuring into fi-  
nal stage the usualsuggestionsfor the linear power  
stages are useful, as for instance :  
- layout accuracy ;  
- a 100nF capacitor corrected between supply pins  
and ground ;  
- boucherotcell (0.1 to 0.2µF +1 Ω series)between  
outputsand ground or across the load.  
Figure 9 : Bidirectional DC Motor Control with µP Compatible Inputs  
Figure 10 : Servocontrol for Compact-disc  
Figure 11 : Capstan Motor Control in Video Recorders  
5/10  
L272  
Figure 12 : Motor Current Control Circuit.  
Note : The input voltage level is compatible with L291 (5-BIT D/A converter).  
Figure 13 : Bidirectional Speed Control of DC Motors.  
2R3 R1  
°
For circuit stability ensure that RX >  
where RM = internal resistance of motor.  
Vs  
RM  
2R R1  
°
The voltage available at the terminals of themotor is VM = 2 (Vi  
and IM is the motor current.  
) + Ro  
ΙM where Ro =  
2
RX  
6/10  
L272  
POWERDIP 16 PACKAGE MECHANICAL DATA  
mm  
inch  
TYP.  
DIM.  
MIN.  
0.51  
0.85  
TYP.  
MAX.  
MIN.  
0.020  
0.033  
MAX.  
a1  
B
b
1.40  
0.055  
0.50  
0.020  
b1  
D
E
e
0.38  
0.50  
20.0  
0.015  
0.020  
0.787  
8.80  
2.54  
0.346  
0.100  
0.700  
e3  
F
17.78  
7.10  
5.10  
0.280  
0.201  
I
L
3.30  
0.130  
Z
1.27  
0.050  
7/10  
L272  
MINIDIP PACKAGE MECHANICAL DATA  
mm  
inch  
TYP.  
0.131  
DIM.  
MIN.  
TYP.  
MAX.  
MIN.  
MAX.  
A
a1  
B
3.32  
0.51  
1.15  
0.020  
0.045  
0.014  
0.008  
1.65  
0.55  
0.065  
0.022  
0.012  
0.430  
0.384  
b
0.356  
0.204  
b1  
D
E
0.304  
10.92  
9.75  
7.95  
0.313  
e
2.54  
7.62  
7.62  
0.100  
0.300  
0.300  
e3  
e4  
F
6.6  
0.260  
0.200  
0.150  
0.060  
I
5.08  
3.81  
1.52  
L
3.18  
0.125  
Z
8/10  
L272  
SO16 NARROW PACKAGE MECHANICAL DATA  
mm  
inch  
DIM.  
MIN.  
TYP.  
MAX.  
1.75  
0.25  
1.6  
MIN.  
TYP.  
MAX.  
A
a1  
a2  
b
0.069  
0.009  
0.063  
0.018  
0.010  
0.1  
0.004  
0.35  
0.19  
0.46  
0.25  
0.014  
0.007  
b1  
C
0.5  
0.020  
c1  
D
45° (typ.)  
9.8  
5.8  
10  
0.386  
0.228  
0.394  
0.244  
E
6.2  
e
1.27  
8.89  
0.050  
0.350  
e3  
F
3.8  
0.4  
4.0  
0.150  
0.150  
0.157  
0.050  
0.024  
L
1.27  
0.62  
M
S
8° (max.)  
9/10  
L272  
Information furnished is believed to be accurate and reliable. However, SGS-THOMSON Microelectronics assumes no responsibility for  
the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its  
use. No license is granted by implication or otherwise under any patent or patent rights of SGS-THOMSON Microelectronics. Specifica-  
tions mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information pre-  
viously supplied. SGS-THOMSON Microelectronics products are not authorized for use as critical components in life support devices or  
systems without express written approval of SGS-THOMSON Microelectronics.  
1995 SGS-THOMSON Microelectronics - All Rights Reserved  
SGS-THOMSON Microelectronics GROUP OF COMPANIES  
Australia - Brazil - France - Germany - Hong Kong - Italy - Japan - Korea - Malaysia - Malta - Morocco - The Netherlands - Singapore -  
Spain - Sweden - Switzerland - Taiwan - Thaliand - United Kingdom - U.S.A.  
10/10  

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