general description the lr 324 consists of four independent, high gain and internally frequency compensated operational amplifi- ers. it is specifically designed to operate from a single power supply. operation from split power supply is also possible and the low power supply current drain is i n depen d ent of the ma g ni t ude of the po w er s u pply voltages. features g internally frequency compensated g large voltage gain g low input bias current g low input offset voltage g large output voltage swing g wide power supply voltage range: single supply 3v to 30 vor dual supplies 1.5v to 15 v g low s u pp l y c urrent drain : 6 0 0 p a applications g battery charger g cordless telephone g switching power supply dip- 1 4 s o p -14 leshan radio company, ltd. 1/10 package . package of LR324 is dip-14 . package of LR324d is sop-14 LR324 pin configuration fi g ur e 1. pi n c onfig u r a t i o n o f lr 324 /LR324d top view package/package input 1- input 1+ v cc input 2+ input 2- output 2 output 1 14 output 4 13 input 4- 12 input 4+ 11 gnd 10 input 3+ 9 input 3- 8 output 3 1 2 3 4 5 6 7 ( dip -14/ sop -14)
functional block diagram figure 2 . functional block diagra m o f lr 3 2 4 /LR324d (each amplifier) q2 q4 q3 q1 q8 q9 6ua 4ua q10 q11 50ua q5 q6 q13 rsc cc 100ua q7 input- input+ output q12 v cc leshan radio company, ltd. 2/10 LR324
parameter symbol value unit poer supply voltage v cc v ierential nput voltage v v nput voltage v c to v utput sort circuit to round ne mpliier v cc d v and t o c continuous poer issipation perating temperature range t p to o c storage temperature range t st to o c bsolute maximum ratings rdering normation package temperature range part number packing type p to o c r t ube sp r t u be sn r cmpn t p m LR324
parameter symbol test conditions min typ max unit input offset voltage v io v o : 1.4v, rs: 0 : ,v cc : from 5v to 15v 2 7 mv input bias current i bias i in + or i in -, v cm =0v 45 2 5 0na input offset current i io i in + or i in - , v cm =0v 5 50 na input common mode voltage range v ir v cc =15v 0 v cc -1.5 v supply current i cc r l = f over full tem- perature range on all op amps 0.6 2 ma v cc = 30 v 1 .5 3 large signal voltage gain g v v cc =15v, r l v =1v 11v 5 1 r r rr , v =15v, v =v v 15v 5 r r rr v =5v 15v 5 1 =1 r 1 r v=1v, v =v, v =15v, v =v =5v, =v, =5 l r , l 1 v =1v, v=v, v =15v, v =v 1 LR324
typical performance characteristics figure 3. input voltage range figure 4. input current figure 6. voltage gain figure 5. supply current figure 7. open loop frequency response 02468 0 1 2 3 4 5 6 7 8 positive negative 0 2 4 6 8 10 12 14 16 18 20 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 t a = 0 o c to 85 o c 1hz 10hz 100hz 1khz 10khz 100khz 1mhz 0 10 20 30 40 50 60 70 80 90 100 110 t a : -40 o c to 85 o c v cc :10v to 15v dc power supply voltage (v) supply current drain (ma) voltage gain (db) power supply voltage (v) frequency (hz) voltage gain (db) figure 8. voltage follower pulse response input -40-20 0 20406080100120 0 5 10 15 20 25 30 v cc =15v time (us) output power supply voltage (v) input voltage (v) input current (na) temperature ( o c) a i d ma v cc r 10m v in v cc /2 v o v cc 0.1uf 0 2 4 6 8 10 12 14 16 18 20 60 70 80 90 100 110 120 r l =2k : r l =20k : voltage (v) voltage (v) 0 3 1 2 0 1 3 2 01020304050 v cc =15v r l = 2k : leshan radio company, ltd. 5/10 LR324
typical performance characteristics (continued) figure 10. large signal frequency response figure 11. output characteristics current sourcing figure 13. current limiting 1k 10k 100k 1000k 0 5 10 15 20 figure 9. voltage follower pulse response (small signal) output voltage (mv) -40-20 0 20406080 0 10 20 30 40 50 60 70 80 90 100 output swing (v p-p ) te m p e r a t u r e ( o c) output current (ma) r 2k r 100k r 1k v in +7v dc v o +15 v dc i o 50pf v in v out 400 01020304050 300 250 350 450 500 550 600 1e-3 0.01 0.1 1 10 100 1 2 3 4 5 6 7 8 independent of v cc , t a = 25 o c output voltage reference to v cc (v) output source current (ma) vo v cc i o v cc /2 t a = 25 o c v cc = 15v time (us) frequency (hz) 1e-3 0.01 0.1 1 10 100 0.01 0.1 1 10 v cc =+5v v cc =+15v figure 12. output characteristics current sinking output voltage (v) output sink current (ma) v cc /2 vo v cc i o leshan radio company, ltd. 6/10 LR324
typical applications figure 15. dc summing amplifier figure 16. power amplifier r6 100k v o r5 100k r1 100k r2 100k r3 100k r4 100k +v 1 +v 2 +v 3 +v 4 1/4 lr 324 + - r1 910k v o r2 100k r3 91k v in(+) v cc r l 1/4 lr 324 - + figure 14. battery charger ac line smps r2 current sense r7 r8 battery pack r4 r3 lr 431 r5 r6 r1 opto isolator v cc gnd gnd - + 1/4 lr 324 + - 1/4 lr 324 leshan radio company, ltd. 7/10 LR324
typical applications (continued) figure 19. pulse generator figure 18. ac coupled non-inverting amplifier figure 20. dc coupled low-pass rc active filter r5 100k r3 100k r4 100k r2 100k r1 1m v o v cc 1/4 lr 324 0.001uf - + r4 51k v cc r b 6.2k r3 51k r1 100k r2 1m c1 0.1uf r5 51k c o v o 1/4 lr 324 r l 10k a v =1+r2/r1 a v =11 (as shown) - + ac r2 16k r1 16k v in r3 100k 1/4 lr 324 r4 100k c2 0.01uf c1 0.01uf f 0 v 0 0 fo=1khz q=1 a v =2 + - v cc r4 3k r3 2k + - 2v + - 2v i1 i2 1ma 1/4 lr 324 r1 2k r2 - + figure 17. fixed current sources leshan radio company, ltd. 8/10 LR324
dip-14 mechanical dimensions e f f f f 0 $ ; e f e e 5 f f f 0 , 1 0 , 1 e ? h f unit: mm leshan radio company, ltd. 9/10 LR324
mechanical dimensions (continued) so p -14 f f e e f p l q e f e 5 5 $ f h e f e $ e f e e f e e ' h s w k ? f f unit: mm leshan radio company, ltd. 10/10 LR324
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