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ST L272 July 2003 DUAL POWER OPERATIONAL AMPLIFIERS

Summary

The L272 is a robust dual power operational amplifier engineered for demanding applications requiring high output current capability (up to 1A) and reliability across single or split low-voltage supplies. Ideal for engineers building automation, servo, and motor speed control circuits, this integrated circuit features ground-compatible inputs and excellent Common Mode Rejection. The comprehensive manual provides detailed technical specifications, thermal data, electrical performance graphs, and multiple application suggestions necessary for robust system design in professional electronics.

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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 integrated circuits in Pow- Minidip

SO16 (Narrow)

erdip, Minidip and SO packages intended for use as power operational amplifiers in a wide range of ap- plications including servo amplifiers and power sup-

ORDERING NUMBERS : L272 (Powerdip)

plies, compacts disc, VCR, etc.

L272M (Minidip) The high gain and high output power capability pro- L272D (SO16 Narrow)

vide superior performance whatever an operational amplifier/power booster combination is required.

PIN CONNECTIONS (top view)

L272DL272M

July 2003

Page Summary Contents For ST L272 July 2003 DUAL POWER OPERATIONAL AMPLIFIERS

Page 1 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...
Page 2 BLOCK DIAGRAMS L272 L272ML272D SCHEMATIC DIAGRAM (one only)
Page 3 ABSOLUTE MAXIMUM RATINGS Symbol Parameter Value Unit Vs Supply Voltage Vi Input Voltage Vs Vi Differential Input Voltage ± Vs Io DC Output Current Ip Peak Output Current (non repetitive) 1.5 Ptot Powe...
Page 4 Figure 1 : Quiescent Current versus Figure 2 : Quiescent Drain Current versus Supply Voltage Temperature Figure 3 : Open Loop Voltage Gain Figure 4 : Output Voltage Swing versus Load Current Figure 5 ...
Page 5 Figure 7 : Channel Separation versus Figure 8 : Common Mode Rejection versus Frequency Frequency APPLICATION SUGGESTION layout accuracy ; NOTE a 100n F capacitor corrected between supply pins In order...
Page 6 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. For circuit stability ens...
Page 7 mm inch DIM. OUTLINE AND MECHANICAL DATA MIN. TYP. MAX. MIN. TYP. MAX. Powerdip 16
Page 8 mm inch DIM. OUTLINE AND MIN. TYP. MAX. MIN. TYP. MAX. MECHANICAL DATA 3.18 3.81 0.125 0.150 Minidip
Page 9 mm inch DIM. OUTLINE AND MIN. TYP. MAX. MIN. TYP. MAX. MECHANICAL DATA Weight: 0.20gr c1 ̊(typ.) SO16 Narrow 8˚(max.) (1) D and F do not include mold flash or protrusions. Mold flash or potrusions sha...
Page 10 Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the conse- quences of use of such information nor for any infringement of paten...

Manual Details

Brand Dual
Pages 10
File Size 892.28 KB
Published June 05, 2026
33 views

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Frequently Asked Questions

What is the maximum continuous output current?

The device can handle an Ido of 1 A.

Does the L272 support split or single supply operation?

Yes, it supports both single and split supplies.

What are the recommendations for ensuring circuit stability?

A 100nF capacitor corrected between supply pins is recommended to avoid instability.

What is the thermal shutdown junction temperature for L272?

Thermal Shutdown occurs at 145°C.