QUAD 5V RAIL-TO-RAIL PRECISION OPERATIONAL AMPLIFIER

Transcription

1 DVNCD INR DVICS, INC. /B QUD 5V RI-TO-RI PRCISION OPRTION MPIFIR GNR DSCRIPTION Th /B/ is a quad monolithic prcision CMOS rail-to-rail oprational amplifir intndd for a road rang of analog applications using ±2.5V to ±5V dual powr supply systms, as wll as 4V to 1V attry opratd systms. ll dvic charactristics ar spcifid for 5V singl supply or ±2.5V dual supply systms. Total supply currnt for four oprational amplifirs is 6m maximum at 5V supply voltag. It is manufacturd with dvancd inar Dvics' nhancd CMOS silicon gat CMOS procss. Th /B/ is dsignd to offr a trad-off of prformanc paramtrs providing a wid rang of dsird spcifications. It has n dvlopd spcifically with th 5V singl supply or ±2.5V dual supply usr andoffrs th popular industry pin configuration of M324 and IC7641 typs. Svral important charactristics of th dvic mak many applications asy to implmnt for ths supply voltags. First, th oprational amplifir can oprat with rail to rail input and output voltags. This fatur allows numrous analog srial stags to implmntd without losing oprating voltag margin. Scond, th dvic was dsignd to accommodat mixd applications whr digital and analog circuits may work off th sam 5V powr supply. Third, th output stag can driv up to 4pF capacitiv and 5KΩ rsistiv loads in non-invrting unity gain connction and doul th capacitanc in th invrting unity gain mod. Ths faturs, coupld with xtrmly low input currnts, high voltag gain, usful andwidth of 1.5MHz, a slw rat of 2.1V/µs, low powr dissipation, low offst voltag and tmpratur drift, mak th /B/ a truly vrsatil, usr frindly, oprational amplifir. Th /B/ is dsignd and faricatd with silicon gat CMOS tchnology, and offrs 1p typical input ias currnt. On-chip offst voltag trimming allows th dvic to usd without nulling in most applications. Th dvic offrs typical offst drift of lss than 7µV/ C which liminats many trim or tmpratur compnsation circuits. For prcision applications, th / B/ is dsignd to sttl to.1% in 8µs. dditionally, roust dsign and rigorous scrning mak this dvic spcially suital for opration in tmpratur-xtrm nvironmnts and ruggd conditions. FTURS Rail-to-rail input and output voltag rangs Symmtrical push-pull class B output drivrs ll paramtrs spcifid for 5V singl supply or ±2.5V dual supply systms Inputs can xtnd yond supply rails y 3mV Outputs sttl to 2mV of supply rails High load capacitanc capaility up to 4pF No frquncy compnsation rquird unity gain stal xtrmly low input ias currnts 1.p typical Idal for high sourc impdanc applications Dual powr supply ±2.5V to ±5.V opration Singl powr supply 5V to 1V opration High voltag gain-typically ±2.5V and ±5.V Driv as low as 2KΩ load with 5m driv currnt Output short circuit protctd Unity gain andwidth of 1.5MHz Slw rat of 1.9V/µs ow powr dissipation Suital for ruggd, tmpratur-xtrm nvironmnts PPICTIONS Voltag amplifir Voltag followr/uffr Charg intgrator Photodiod amplifir Data acquisition systms High prformanc portal instrumnts Signal conditioning circuits Snsor and transducr amplifirs ow lakag amplifirs ctiv filtrs Sampl/Hold amplifir Picoammtr Currnt to voltag convrt Coaxial cal drivr PIN CONFIGURTION ORDRING INFORMTION ( suffix dnots lad-fr (RoHS)) OUT 1 14 OUT D Oprating Tmpratur Rang C to 7 C C to 7 C -55 C to 125 C 14-Pin 14-Pin 14-Pin Small Outlin Plastic Dip CRDIP Packag (SOIC) Packag Packag SB PB DB BSB BPB BDB SB PB DB -IN IN IN D IN D V IN B V- IN C -IN B OUT B IN C OUT C * Contact factory for ladd (non-rohs) or high tmpratur vrsions. TOP VIW SB, PB, DB PCKGS 218 dvancd inar Dvics, Inc., Vrs of 9

2 BSOUT MXIMUM RTINGS Supply voltag, V rfrncd to V- -.3V to V1.6V Supply voltag, V S rfrncd to V- ±5.3V Diffrntial input voltag rang -.3V to V.3V Powr dissipation 6 mw Oprating tmpuratur rang SB, PB packags C to 7 C DB packag -55 C to 125 C Storag tmpuratur rang -65 C to 15 C ad tmpuratur, 1 sconds 26 C CUTION: SD Snsitiv Dvic. Us static control procdurs in SD controlld nvironmnt. OPRTING CTRIC CHRCTRISTICS unlss othrwis spcifid B 472 Tst Paramtr Symol Min Typ Max Min Typ Max Min Typ Max Unit Conditions Supply V S ±2. ±5. ±2. ±5. ±2. ±5. V Dual Supply Voltag V V Singl Supply Input Offst V OS mv R S 1KΩ Voltag mv C T 7 C Input Offst I OS p Currnt p C T 7 C Input Bias I B p Currnt p C T 7 C Input Voltag V IR V V = 5V Rang V Input R IN Ω Rsistanc Input Offst TCV OS µv/ C R S 1KΩ Voltag Drift Powr Supply PSRR db R S 1KΩ Rjction Ratio C T 7 C Common Mod CMRR db R S 1KΩ Rjction Ratio C T 7 C arg Signal V V/mV R = 1KΩ Voltag Gain V/mV R 1MΩ Output V O low R = 1MΩ Singl supply Voltag V O high V C T 7 C Rang V O low V R = 1KΩ Dual supply V O high V C T 7 C Output Short I SC m Circuit Currnt Supply I S m V IN = V No oad Currnt Powr P D mw Both amplifirs Dissipation Input C IN pf Capacitanc Bandwidth B W MHz Slw Rat S R V/µs V = 1 R = 1KΩ Ris tim t r µs R = 1KΩ Ovrshoot % R = 1KΩ C = 1pF Factor /B dvancd inar Dvics 2 of 9

3 OPRTING CTRIC CHRCTRISTICS (cont'd) unlss othrwis spcifid B 472 Paramtr Symol Min Typ Max Min Typ Max Min Typ Max Unit Tst Conditions Maximum oad C pf Gain = 1 Capacitanc pf Gain = 5 Input Nois n nv/ HZ f = 1KHZ Voltag Input Currnt i n f/ HZ f = 1HZ Nois Sttling t s µs.1% Tim µs.1% V = -1 R = 5KΩ C = 5pF V S = ±5.V unlss othrwis spcifid B 472 Paramtr Symol Min Typ Max Min Typ Max Min Typ Max Unit Tst Conditions Powr Supply PSRR db R S 1KΩ Rjction Ratio Common Mod CMRR db R S 1KΩ Rjction Ratio arg Signal V V/mV R = 1KΩ Voltag Gain Output Voltag V O low V R = 1KΩ Rang V O high Bandwidth B W MH Z Slw Rat S R V/µs V =1 C =5pF V S = 5.V -55 C T 125 C unlss othrwis spcifid 472D 472BD 472D Paramtr Symol Min Typ Max Min Typ Max Min Typ Max Unit Tst Conditions Input Offst V OS mv R S 1KΩ Voltag Input Offst I OS n Currnt Input Bias I B n Currnt Powr Supply PSRR db R S 1KΩ Rjction Ratio Common Mod CMRR db R S 1KΩ Rjction Ratio arg Signal V V/mV R 1KΩ Voltag Gain Output Voltag V O low V R 1KΩ Rang V O high /B dvancd inar Dvics 3 of 9

4 Dsign & Oprating Nots: 1. Th /B/ CMOS oprational amplifir uss a 3 gain stag architctur and an improvd frquncy compnsation schm to achiv larg voltag gain, high output driving capaility, and ttr frquncy staility. Th /B/ is intrnally compnsatd for unity gain staility using a novl schm. This dsign producs a clan singl pol roll off in th gain charactristics whil providing for mor than 7 dgrs of phas margin at th unity gain frquncy. unity gain uffr using th / B/ will typically driv 4pF of xtrnal load capacitanc without staility prolms. In th invrting unity gain configuration, it can driv up to 8pF of load capacitanc. Compard to othr CMOS oprational amplifirs, th /B/ is much mor rsistant to parasitic oscillations. 2. Th /B/ has complmntary p-channl and n-channl input diffrntial stags connctd in paralll to accomplish rail-to-rail input common mod voltag rang. With th common mod input voltag clos to th powr supplis, on of th two diffrntial stags is switchd off intrnally. To maintain compatiility with othr oprational amplifirs, this switching point has n slctd to aout 1.5V aov th ngativ supply voltag. s offst voltag trimming on th /B/ is mad whn th input voltag is symmtrical to th supply voltags, this intrnal switching dos not affct a larg varity of applications such as an invrting amplifir or non-invrting amplifir with a gain gratr than 2.5 (5V opration), whr th common mod voltag dos not mak xcursions low this switching point. 3. Th input ias and offst currnts ar ssntially input protction diod rvrs ias lakag currnts, and ar typically lss than 1p at room tmpratur. This low input ias currnt assurs that th analog signal from th sourc will not distortd y input ias currnts. For applications whr sourc impdanc is vry high, it may ncssary to limit nois and hum pickup through propr shilding. 4. Th output stag consists of class B complmntary output drivrs, capal of driving a low rsistanc load. Th output voltag swing is limitd y th drain to sourc on-rsistanc of th output transistors as dtrmind y th ias circuitry, and th valu of th load rsistor whn connctd. In th voltag followr configuration, th oscillation rsistant fatur, comind with th rail to rail input and output fatur, maks th /B/ an ffctiv analog signal uffr for mdium to high sourc impdanc snsors, transducrs, and othr circuit ntworks. 5. Th /B/ oprational amplifir has n dsignd with static discharg protction. Intrnally, th dsign has n carfully implmntd to minimiz latch up. Howvr, car must xrcisd whn handling th dvic to avoid strong static filds. In using th oprational amplifir, th usr is advisd to powr up th circuit for, or simultanously with, any input voltags applid and to limit input voltags to not xcd.3v of th powr supply voltag lvls. ltrnativly, a 1KΩ or highr valu rsistor at th input trminals will limit input currnts to accptal lvls whil causing vry small or ngligil accuracy ffcts. TYPIC PRFORMNC CHRCTRISTICS COMMON MOD INPUT VOTG RNG (V) ±7 ±6 ±5 ±4 ±3 ±2 ±1 COMMON MOD INPUT VOTG RNG S FUNCTION OF SUPPY VOTG ±1 ±2 ±3 ±4 ±5 ±6 ±7 SUPPY VOTG (V) OPN OOP VOTG GIN (V/mV) OPN OOP VOTG GIN S FUNCTION OF SUPPY VOTG ND TMPRTUR 1 } -55 C } 25 C } 125 C ±2 ±4 ±6 SUPPY VOTG (V) R = 1KΩ R = 5KΩ ±8 1 INPUT BIS CURRNT S FUNCTION OF MBINT TMPRTUR 12 SUPPY CURRNT S FUNCTION OF SUPPY VOTG INPUT BIS CURRNT (p) V S = ± 2.5V SUPPY CURRNT (m) INPUTS GROUNDD S UNODD T = -55 C -25 C 25 C 8 C 125 C MBINT TMPRTUR ( C) ±1 ±2 ±3 ±4 SUPPY VOTG (V) ±5 ±6 /B dvancd inar Dvics 4 of 9

5 TYPIC PRFORMNC CHRCTRISTICS (cont'd) VOTG SWING (V) ±7 ±6 ±5 ±4 ±3 ±2 VOTG SWING S FUNCTION OF SUPPY VOTG -55 C T 125 C R = 1KΩ R = 1KΩ R = 2KΩ ±1 ±2 ±3 ±4 ±5 ±6 ±7 SUPPY VOTG (V) OPN OOP VOTG GIN (db) OPN OOP VOTG GIN S FUNCTION OF FRQUNCY FRQUNCY (Hz) K 1K 1K 1M 1M PHS SHIFT IN DGRS INPUT OFFST VOTG (mv) INPUT OFFST VOTG S FUNCTION OF MBINT TMPRTUR RPRSNTTIV UNITS MBINT TMPRTUR ( C) INPUT OFFST VOTG (mv) INPUT OFFST VOTG S FUNCTION OF COMMON MOD INPUT VOTG COMMON MOD INPUT VOTG (V) OPN OOP VOTG GIN (V/mV) OPN OOP VOTG GIN S FUNCTION OF OD RSISTNC 1 1K 1K 1K 1K OD RSISTNC (Ω) VOTG NOIS DNSITY (nv/ Hz) VOTG NOIS DNSITY S FUNCTION OF FRQUNCY 1 1 1K 1K 1K FRQUNCY (Hz) 1K RG - SIGN TRNSINT RSPONS SM - SIGN TRNSINT RSPONS 5V/div R = 1KΩ C = 5pF 1mV/div R = 1KΩ C = 5pF 1V/div 2µs/div 2mV/div 2µs/div /B dvancd inar Dvics 5 of 9

6 TYPIC PPICTIONS RI-TO-RI VOTG FOOWR/BUFFR RI-TO-RI WVFORM ~ Z IN = 1 12 Ω V IN V IN 5V 5V.1µF - C 4pF * S rail to rail wavform R =1KΩ 5V INPUT V 5V V Prformanc wavforms. Uppr trac is th output of a Win Bridg Oscillator. owr trac is th output of Rail-to-Rail voltag followr. OW OFFST SUMMING MPIFIR PHOTO DTCTOR CURRNT TO VOTG CONVRTR 5K R F = 5M 1K 2.5V INPUT 1 INPUT 2-1K GIN = 5 * Circuit Drivs arg oad Capacitanc 4pF - 2.5V.1µF.1µF C = 4pF PHOTODIOD I - 2.5V -2.5V V OUT = I x R F R = 1K WIN BRIDG OSCITOR (RI-TO -RI) SIN WV GNRTOR RI-TO-RI VOTG COMPRTOR - 2.5V -2.5V 1K V IN 5V - 5V.1µF C =.1µF.1µF 1K R = 1K f = ~ 1 2πR C ~ 1.6KHz 1K 5K 1M * S rail to rail wavform /B dvancd inar Dvics 6 of 9

7 SOIC-14 PCKG DRWING 14 Pin Plastic SOIC Packag Millimtrs Inchs Dim Min Max Min Max S (45 ) C D BSC.5 BSC D H S S (45 ) H C /B dvancd inar Dvics 7 of 9

8 PDIP-14 PCKG DRWING 14 Pin Plastic DIP Packag Millimtrs Inchs 1 Dim Min Max Min Max c D S D S c 1 /B dvancd inar Dvics 8 of 9

9 CRDIP-14 PCKG DRWING 14 Pin CRDIP Packag Millimtrs Inchs 1 Dim Min Max Min Max C D D s BSC 7.62 BSC.1 BSC.3 BSC S Ø C 1 /B dvancd inar Dvics 9 of 9