l2726 april 1993 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 description the l2726 is a monolithic integratedcircuit 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, as motor and finds applications in compact-disc vcr automative, etc. the high gain and high output power capability pro- vide superior performance whatever an operational amplifier/power booster combination is required. pin connection (top view) so20 (12 + 4 + 4) ordering number : l2726 this is advanced information on a new product now in development or undergoing evaluation. details are subject to change without notice. 1/6
block diagram schematic diagram (one section) absolute maximum ratings symbol parameter value unit v s supply voltage 28 v v s peak supply voltage (50ms) 50 v v i input voltage v s v i differential input voltage v s i o dc output current 1 a i p peak output current (non repetitive) 1.5 a p tot power dissipation at t amb = 85 o c t case = 75 o c 1 5 w t op operating temperature 40 to 85 o c t stg , t j storage and junction temperature 40 to 150 o c thermal data r th j-case thermal resistance junction-case max. 15.0 o c/w r th j-amb thermal resistance junction-ambient (*) max. 65 o c/w (*) with 4 sq. cm copper area heatsink. l2726 2/6
electrical characteristics v s = 24v, t amb = 25 o c unless otherwise specified symbol parameter test conditions min. typ. max. unit v s single supply voltage 4 28 v v s split supply voltage 2 14 v i s quiescent drain current v o = v s 2 v s = 24v 10 15 ma v s = 24v 9 15 i b input bias current 0.2 1 m a v os input offset voltage 10 mv i os input offset current 100 na sr slew rate 2 v/ m s b gain-bandwidth product 1.2 mhz r i input resistance 500 k w g v o. l. voltage gain f = 100hz f = 1khz 70 80 60 db e n input noise voltage b = 22hz to 22khz 10 m v i n input noise voltage 200 pa cmr common mode rejection f = 1khz 66 84 db svr supply voltage rejection f = 100hz v s = 24v r g = 10k w v s = 12v v r = 0.5v v s = 6v 60 70 75 80 db db db v drop(high) v s = 2.5v to 12v i p = 100ma i p = 500ma 0.7 1 1.5 v v drop(low) v s = 2.5v to 12v i p = 100ma i p = 500ma 0.3 0.5 1 v c s channel separation f = 1khz v s = 24v r l = 10 w v s = 6v g v = 30db 60 60 db t sd thermal shutdown junction temperature 145 o c figure 1 : quiescent current vs. supply voltage figure 2 : open loop gain vs. frequency l2726 3/6
figure 3 : common mode rejection frequency figure 4 : output swing vs. load current (v s = 5v) figure 5 : output swing vs. load current (v s = 12 v) figure 6 : supply voltage rejection vs. frequency figure 7 : channel separation vs. frequency. l2726 4/6
so20 package mechanical data dim. mm inch min. typ. max. min. typ. max. a 2.65 0.104 a1 0.1 0.2 0.004 0.008 a2 2.45 0.096 b 0.35 0.49 0.014 0.019 b1 0.23 0.32 0.009 0.013 c 0.5 0.020 c1 45 (typ.) d 12.6 13.0 0.496 0.510 e 10 10.65 0.394 0.419 e 1.27 0.050 e3 11.43 0.450 f 7.4 7.6 0.291 0.300 l 0.5 1.27 0.020 0.050 m 0.75 0.030 s 8 (max.) l2726 5/6
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. ? 1994 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. l2726 6/6
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