low cost, high-speed rail-to-rail output op-amp prelim inary technical data ada4851 rev. pra 7/30 / 20 04 in fo rmation furn is h e d by an al o g dev i ces is believed to be a ccu rate and r e liable. how e ver, no r e spons i bili ty is assumed by analog devices fo r its use, nor f o r an y i n fri n geme nt s of p a t e nt s or ot her ri g h t s o f th ird parties th at may result fro m its use . specifications subject to chan g e witho u t n o tice. no licen s e is g r an te d by implicati o n or ot he rwi s e un der a n y p a t e nt or p a t e nt r i ghts of anal og de vices. trad emarks an d registered tra d ema r ks are the proper ty of th eir respectiv e co mpan ies. one technolog y way, p.o . box 9106, norwood, ma 02062-9106, u.s.a. t e l: 781. 329. 4 700 www.analog.com fax: 781. 326. 87 03 ? 2004 analog de vices, i n c. al l r i ght s r e ser v ed . fea t ures high-speed 175mhz C3db bandwidth 250v/us slew r a te 25ns settling ti me to 0.5% wide s u pply r a nge: 2.7-1 0 v rail-to-rail out p ut low power: 3ma/amplifier 0. 1db flatn e ss: 15mh z di fferentia l g a in: 0.05% di fferentia l p h ase: 0.05 lo w input-referred no ise: 10 nv/hz t y pical low voltage offsett: 5mv high output current:50ma output disable avail a ble in sp ace-saving pac k ages sot23-6, soic-8 an d tssop - 14 a pplic a t io ns co nsumer vi de o professional vi deo video switcher s active fi lters pr oduc t ov er vie w the ad a4851 -1 (s in g l e), ad a4851-2 (dual) and ad a4851- 4 ( q u ad) are l o w c o st, hig h sp e e d, vol t ag e fe e d b a ck r a i l -to - r a i l ou t p ut op -am p s . d e sp i t e t h e l o w c o st, t h is f a mi ly of am pl if ie rs has 175mh z b a n d wid t h, 250v/us s l ew ra t e , and can s e t t le wi t h in 25 n s t o 0 . 1% usin g o n ly 3ma/ a m pl ifer o f q u ies c en t cu rr e n t . this fa m i ly o f a m plif iers p r o v id es t h e us er wi t h t r ue sin g le s u p p l y ca pa b i li ty , allo w i n g th e si gn al lev e l s o n th e in p u t t o ext e nd 200mv be lo w n e g a ti v e ra il a nd 1v wi t h in p o si t i v e ra il . on t h e o u t p u t t h e am plif ier can swi n g wi t h in 5 0 mv o f t h e ei t h er ra i l . w i t h 0.1db f l a t n e s s o u t t o 15m h z and dif f er en tial ga in and p h as e o f 0.05% a nd 0.05 t h is fami ly o f a m plif ie rs is ide a l fo r v i d e o ap p l i c at i o n s . c o m b ini n g i t s lo w cost wi t h p e r f o r ma n c e , t h es e a m plif iers a r e ide a l in co n s u m er a p plic a t io n s . func ti onal bl oc k di a g ram sot-23 -6 (r t-6) the ad a4851 a l s o has hig h o u t p u t c u r r en t ma kin g t h em ideal in dr ivin g video sig n als. th e ad4851-1 co n t a i n s a dis a b l e fe a t ur e t h a t wi l l lo w e r t h e p o w e r o f t h e a m plif ie r a n d p u t t h e o u t p ut in hig h i m p e dance m o d e w h ich ma k e s i t p o ssi b le fo r mu x i n g ap p l i c at i o n s . these amplif ers are rate d to wo rk in t h e extended te mpra ture ran g e (-40 to 1 2 5 c). the ada4851-1 is avail a ble in s o t23 - 6. the ada48 51-2 is available in soi c and the ada4851-4 is av ail a bl e i n t ssop-14.
ada4851 preliminary technical data rev. pra | page 2 of 8 table of contents ada4851 specifications .................................................................. 3 ada4851 specifications .................................................................. 4 ada4851 specifications .................................................................. 5 absolute maximum ratings ............................................................ 6 thermal resistance ...........................................................................6 outline dimensions ..........................................................................7 esd caution .......................................................................................7 revision history revision pra: initial version
preliminary technical data ada4851 rev. pra | page 3 of 8 ada4851 specifications table 1. v s = +3 v (@t a = +25 o c, g = +10, r l = 1 k?, unless otherwise noted.) parameter conditions min typ max unit dynamic performance C3 db bandwidth g = +1, v o = 0.2 v p-p 175 mhz g = +1, v o = 2 v p-p 25 mhz bandwidth for 0.1 db flatness g = +1, v o = 2 v p-p 15 mhz slew rate g = +1, v o = 2v step 250 v/s settling time to 0.1% g = +2, v o = 2 v step 25 ns noise/distortion performance harmonic distortion (dbc) hd2/hd3 f c = 1 mhz, v o = 2 v p-p,g = +1 75 dbc input voltage noise f = 100 khz 9 nv/ hz input current noise f = 100 khz, disable pin floating 1.5 pa/ hz differential gain g=+2 0.05 % differential phase g=+2 0.05 dc performance input offset voltage 5 mv input offset voltage drift 10 v/c input bias current 1.8 a input bias current drift 10 na/c input bias offset current 0.1 a open-loop gain db input characteristics input resistance differential mode 300 k? input capacitance 1.4 pf input common-mode voltage range -0.2 to 2.0 v common-mode rejection ratio v cm = +2 v 100 db disable pin disable input voltage output disabled v turn-off time ns turn-on time ns output characteristics output overdrive recovery time (rise/fall) v in = 1.5v, g =+2 ns output voltage swing r l = 150? 0.05 to 2.95 v short-circuit current sinking and sourcing ma power supply operating range 2.7 12 v quiescent current 3 ma quiescent current (disabled) disable = low 0.5 ma power supply rejection ratio vs=1v 95 db
ada4851 preliminary technical data rev. pra | page 4 of 8 ada4851 specifications table 2. v s = +5 v (@t a = +25 o c, g = +10, r l = 1 k?, unless otherwise noted.) parameter conditions min typ max unit dynamic performance C3 db bandwidth g = +1, v o = 0.2 v p-p 175 mhz g = +1, v o = 2 v p-p 25 mhz bandwidth for 0.1 db flatness g = +1, v o = 2 v p-p 15 mhz slew rate g = +1, v o = 2v step 250 v/s settling time to 0.1% g = +2, v o = 2 v step 25 ns noise/distortion performance harmonic distortion (dbc) hd2/hd3 f c = 1 mhz, v o = 2 v p-p,g = +1 75 dbc input voltage noise f = 100 khz 9 nv/ hz input current noise f = 100 khz, disable pin floating 1.5 pa/ hz differential gain g=+2 0.05 % differential phase g=+2 0.05 dc performance input offset voltage 5 mv input offset voltage drift 10 v/c input bias current 1.8 a input bias current drift 10 na/c input bias offset current 0.1 a open-loop gain db input characteristics input resistance differential mode 300 k? input capacitance 1.4 pf input common-mode voltage range -0.2 to 4.0 v common-mode rejection ratio v cm = +4 v 100 db disable pin disable input voltage output disabled v turn-off time ns turn-on time ns output characteristics output overdrive recovery time (rise/fall) v in = 1.5v, g =+2 ns output voltage swing r l = 150? 0.05 to 4.95 v short-circuit current sinking and sourcing ma power supply operating range 2.7 12 v quiescent current 3 ma quiescent current (disabled) disable = low 0.5 ma power supply rejection ratio vs=3 95 db
preliminary technical data ada4851 rev. pra | page 5 of 8 ada4851 specifications table 3. v s = 5 v (@t a = +25 o c, g = +10, r l = 1 k?, unless otherwise noted.) parameter conditions min typ max unit dynamic performance C3 db bandwidth g = +1, v o = 0.2 v p-p 175 mhz g = +1, v o = 2 v p-p 25 mhz bandwidth for 0.1 db flatness g = +1, v o = 2 v p-p 15 mhz slew rate g = +1, v o = 2v step 250 v/s settling time to 0.1% g = +2, v o = 2 v step 25 ns noise/distortion performance harmonic distortion (dbc) hd2/hd3 f c = 1 mhz, v o = 2 v p-p,g = +1 75 dbc input voltage noise f = 100 khz 9 nv/ hz input current noise f = 100 khz, disable pin floating 1.5 pa/ hz differential gain g=+2 0.05 % differential phase g=+2 0.05 dc performance input offset voltage 5 mv input offset voltage drift 10 v/c input bias current 1.8 a input bias current drift 10 na/c input bias offset current 0.1 a open-loop gain db input characteristics input resistance differential mode 300 k? input capacitance 1.4 pf input common-mode voltage range -5.2 to 5.0 v common-mode rejection ratio v cm = +9 v 100 db disable pin disable input voltage output disabled v turn-off time ns turn-on time ns output characteristics output overdrive recovery time (rise/fall) v in = 1.5v, g =+2 ns output voltage swing r l = 150? -4.95 to 4.95 v short-circuit current sinking and sourcing ma power supply operating range 2.7 12 v quiescent current 3 ma quiescent current (disabled) disable = low 0.5 ma power supply rejection ratio vs=5 95 db
ada4851 preliminary technical data rev. pra | page 6 of 8 absolute maximum ratings table 4. ada4851 absolute maximum ratings parameter rating supply voltage 12 v power dissipation see figure 2 common-mode input voltage vee C 0.5 v to vcc + 0.5 v differential input voltage 1.8 v storage temperature C65c to +125c operating temperature range C40c to +85c lead temperature range (soldering 10 sec) 300c junction temperature 150c stresses above those listed under absolute maximum ratings may cause permanent damage to the device. this is a stress rating only and functional operation of the device at these or any other condition s above those indicated in the operational section of this specification is not implied. exposure to absolute maximum rating conditions for extended periods may affect device reliability. thermal resistance ja is specified for the worst-case conditions, i.e., ja is specified for device soldered in circuit board for surface mount packages. table 5. thermal resistance package type ja unit sot23-6 180 c/w soic-8 150 c/w tssop-14 120 c/w maximum power dissipation the maximum safe power dissipation in the ada4851 package is limited by the associated rise in junction temperature (t j ) on the die. at approximately 150 c, which is the glass transition temperature, the plastic will change its properties. even temporarily exceeding this temperature limit may change the stresses that the package exerts on the die, permanently shifting the parametric performance of the ada4851. exceeding a junction temperature of 175 c for an extended period of time can result in changes in the silicon devices potentially causing failure. the power dissipated in the package (p d ) is the sum of the quiescent power dissipation and the power dissipated in the package due to the load drive for all outputs. the quiescent power is the voltage between the supply pins (v s ) times the quiescent current (i s ). assuming the load (r l ) is mid-supply, then the total drive power is v s /2 i out, some of which is dissipated in the package and some in the load (v out i out ). rms output voltages should be considered. if r l is referenced to v s- as in single supply operation, the total power is v s i out . in single supply with r l to v s- worst case is v out = v s /2. airflow will increase heat dissipation effectively reducing ja . also, more metal directly in contact with the package leads from metal traces, through holes, ground, and power planes will reduce the ja .
prelim inary technical data ada4851 r e v. pr a | pa g e 7 of 8 outline dimensions f i gure 1. so t2 3-6 d i mensi o ns sh own in m i l l i m e te rs f i gure 2. soic- 8 dim ensio n s sho wn i n mi lli met e r s f i gure 3. t s so p - 14 ---- d i mens ions sh o wn in millimet ers esd caution esd (electrostatic discharge) sensitive device. ele c trosta tic charg e s as high as 4000 v readily accumulate on the human body and test eq uipment and can discharge with out detection. although this product features proprietary esd protection circu i try, permanent dama ge may occur on devices subjected to high energy electrostatic discharges. theref ore, prop er esd precautions a r e recommended to avoid perform a nce degradation or l o ss of functiona l ity.
ada4851 preliminary technical data rev. pra | page 8 of 8 table 6. ordering guide ada4851 products temperature package package description package outline branding ada4851-1art-r2 C40c to +125c 6-lead sot-23 rt-6 hhb ada4851-1art-reel C40c to +125c 6-lead sot-23 rt-6 hhb ada4851-1art-reel7 C40c to +125c 6-lead sot-23 rt-6 hhb ada4851-2arm C40c to +125c 8-lead soic rm-8 hib ada4851-2arm-reel C40c to +125c 8-lead soic rm-8 hib ada4851-2arm-reel7 C40c to +125c 8-lead soic rm-8 hib ada4851-4aru C40c to +125c 14-lead tssop ru-14 ada4851-4aru-reel C40c to +125c 14-lead tssop ru-14 ADA4851-4ARU-REEL7 C40c to +125c 14-lead tssop ru-14
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