L2726 ® LOW DROP DUAL POWER OPERATIONAL AMPLIFIER . . .OUTPUT CURRENT TO 1 A .OPERATES AT LOW VOLTAGES SINGLE OR SPLIT SUPPLY .LARGE COMMON-MODE AND .DIFFERENTIAL MODE RANGE .LOW INPUT OFFSET VOLTAGE .GROUND COMPATIBLE INPUTS .LOW SATURATION VOLTAGE THERMAL SHUTDOWN CLAMP DIODE SO20 (12 + 4 + 4) ORDERING NUMBER : L2726 DESCRIPTION The L2726 is a monolithic integrated circuit in SO-20 package intended for use as power operational am- plifiers in a wide range of applications including servo amplifiers and power supplies. It is particularly indicated for driving inductive loads, The high gain and high output power capability pro- as motor and finds applications in compact-disc vide superior performance whatever an operational VCR automative, etc. amplifier/power booster combination is required. PIN CONNECTION (top view) October 1998 1/6 This is advanced information on a new product now in development or undergoing evaluation. Details are subject to change without notice.

L2726 BLOCK DIAGRAM SCHEMATIC DIAGRAM (one section) ABSOLUTE MAXIMUM RATINGS Symbol Parameter Value Unit V Supply Voltage 28 V s V Peak Supply Voltage (50ms) 50 V s V Input Voltage V i s V Differential Input Voltage – V i s I DC Output Current 1 A O I Peak Output Current (non repetitive) 1.5 A p P Power Dissipation at T = 85oC 1 W tot amb T = 75oC 5 case Top Operating Temperature – 40 to 85 oC T , T Storage and Junction Temperature – 40 to 150 oC stg j THERMAL DATA R Thermal Resistance Junction-case Max. 15.0 oC/W th j-case R Thermal Resistance Junction-ambient (*) Max. 65 oC/W th j-amb (*) With 4 sq. cm copper area heatsink. 2/6

L2726 ELECTRICAL CHARACTERISTICS Vs = 24V, Tamb = 25oC unless otherwise specified Symbol Parameter Test Conditions Min. Typ. Max. Unit V Single Supply Voltage 4 28 V s V Split Supply Voltage – 2 – 14 V s V mA Is Quiescent Drain Current Vo = 2s Vs = 24V 10 15 V = 24V 9 15 s I Input Bias Current 0.2 1 m A b Vos Input Offset Voltage 10 mV Ios Input Offset Current 100 nA SR Slew Rate 2 V/m s B Gain-bandwidth Product 1.2 MHz Ri Input Resistance 500 kW Gv O. L. Voltage Gain f = 100Hz 70 80 dB f = 1kHz 60 e Input Noise Voltage 10 m V N B = 22Hz to 22kHz I Input Noise Voltage 200 pA N CMR Common Mode Rejection f = 1kHz 66 84 dB SVR Supply Voltage Rejection f = 100Hz V = 24V 70 dB s R = 10kW V = – 12V 60 75 dB G s V = 0.5V V = – 6V 80 dB R s V V = – 2.5V to – 12V I = 100mA 0.7 V DROP(HIGH) s p Ip = 500mA 1 1.5 VDROP(LOW) Vs = – 2.5V to – 12V Ip = 100mA 0.3 V I = 500mA 0.5 1 p C Channel Separation f = 1KHz V = 24V 60 dB s s R = 10W V = 6V 60 L s Gv = 30dB Tsd Thermal Shutdown Junction 150 oC Temperature Figure 1 : Quiescent Current vs. Supply Voltage Figure 2 : Open Loop Gain vs. Frequency 3/6

L2726 Figure 3 : Common Mode Rejection Frequency Figure 4 : Output Swing vs. Load Current (V = – 5V) s Figure 5 : Output Swing vs. Load Current (V = – 12 V) Figure 6 : Supply Voltage Rejection vs. s Frequency Figure 7 : Channel Separation vs. Frequency. 4/6

L2726 mm inch OUTLINE AND DIM. MECHANICAL DATA MIN. TYP. MAX. MIN. TYP. MAX. A 2.35 2.65 0.093 0.104 A1 0.1 0.3 0.004 0.012 B 0.33 0.51 0.013 0.020 C 0.23 0.32 0.009 0.013 D 12.6 13 0.496 0.512 E 7.4 7.6 0.291 0.299 e 1.27 0.050 H 10 10.65 0.394 0.419 h 0.25 0.75 0.010 0.030 L 0.4 1.27 0.016 0.050 SO20 K 0˚ (min.)8˚ (max.) L h x 45 A B e K A1 C H D 20 11 E 1 10 SO20MEC 5/6

L2726 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 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 STMicroelectronics. Specification mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMi- croelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics. The ST logo is a registered trademark of STMicroelectronics © 1998 STMicroelectronics – Printed in Italy – All Rights Reserved STMicroelectronics GROUP OF COMPANIES Australia - Brazil - Canada - China - France - Germany - Italy - Japan - Korea - Malaysia - Malta - Mexico - Morocco - The Netherlands - Singapore - Spain - Sweden - Switzerland - Taiwan - Thailand - United Kingdom - U.S.A. http://www.st.com 6/6