ALD2722E/ALD2722 DUAL EPAD LOW POWER CMOS OPERATIONAL AMPLIFIER ADVANCED LINEAR DEVICES, INC.
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1 TM ADVANCED LINEAR DEVICES, INC. EPAD ALD2722E/ALD2722 E N A B L E D DUAL EPAD LOW POWER CMOS OPERATIONAL AMPLIFIER KEY FEATURES 5V singl supply opration EPAD (Elctrically Programmabl Analog Dvic) Usr programmabl V OS trimmr Computr-assistd trimming Rail-to-rail input/output Compatibl with standard EPAD Programmr Each amplifir V OS can b trimmd to a diffrnt V OS lvl High prcision through in-systm circuit prcision trimming Rducs or liminats V OS, PSRR, CMRR and TCV OS rrors Systm lvl calibration capability Application Spcific Programming mod In-Systm Programming mod Elctrically programmabl to compnsat for xtrnal componnt tolrancs Achivs.1pA input bias currnt and 25µV input offst voltag simultanously Low voltag opration GENERAL DESCRIPTION Th ALD2722E/ALD2722 is a dual monolithic rail-to-rail prcision CMOS oprational amplifir with intgratd usr programmabl EPAD (Elctrically Programmabl Analog Dvic) basd offst voltag adjustmnt. Th ALD2722E/ALD2722 is a dual vrsion of th ALD1722E/ALD2722 oprational amplifir. Each ALD2722E/ALD2722 oprational amplifir faturs individual usr-programming offst voltag trimming, rsulting in significantly nhancd total systm prformanc and usr flxibility. EPAD tchnology is an xclusiv ALD dsign which has bn rfind for analog applications whr prcision voltag trimming is ncssary to achiv a dsird prformanc. It utilizs CMOS FETs as in-circuit lmnts for trimming of offst voltag bias charactristics with th aid of a prsonal computr undr softwar control. Onc programmd, th st paramtrs ar stord indfinitly within th dvic vn aftr powr-down. EPAD offrs th circuit dsignr a convnint and cost-ffctiv trimming solution for achiving th vry highst amplifir/systm prformanc. Th ALD2722E/ALD2722 dual oprational amplifir faturs rail-to-rail input and output voltag rangs, tolranc to ovr-voltag input spiks of 3mV byond supply rails, high capacitiv loading up to 4pF, xtrmly low input currnts of.1pa typical, high opn loop voltag gain, usful bandwidth of 1.5MHz, slw rat of 1.9V/µs, and low typical supply currnt of 2mA for both amplifirs. ORDERING INFORMATION 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 CERDIP Packag (SOIC) Packag Packag ALD2722ESB ALD2722EPB ALD2722EDB ALD2722SB ALD2722PB ALD2722DB * Contact factory for high tmpratur vrsions. BENEFITS Eliminats manual and laborat systm trimming procdurs Rmot controlld automatd trimming In-Systm Programming capability No xtrnal componnts No intrnal clocking nois sourc Simpl and cost ffctiv Small packag siz Extrmly small total functional volum siz Low systm implmntation cost Low powr APPLICATIONS Snsor intrfac circuits Transducr biasing circuits Capacitiv and charg intgration circuits Biochmical prob intrfac Signal conditioning Portabl instrumnts High sourc impdanc lctrod amplifirs Prcision Sampl and Hold amplifirs Prcision currnt to voltag convrtr Error corrction circuits Snsor compnsation circuits Prcision gain amplifirs Priodic In-systm calibration Systm output lvl shiftr PIN CONFIGURATION -IN A +IN A V N/C 4 11 V + N/C +IN B -IN B TOP VIEW SB, PB, DB PACKAGES VE 2A VE 1A OUT A OUT B VE 1B VE 2B * N/C Pins ar intrnally connctd. Do not connct xtrnally. Rv Advancd Linar Dvics, Inc. 415 Tasman Driv, Sunnyval, CA Tl: (48) Fax: (48)
2 FUNCTIONAL DESCRIPTION Th ALD2722E/ALD2722 uss EPADs as in-circuit lmnts for trimming of offst voltag bias charactristics. Each ALD2722E/ALD2722 has a pair of EPAD-basd circuits connctd such that on circuit is usd to adjust V OS in on dirction and th othr circuit is usd to adjust V OS in th othr dirction. Whil ach of th EPAD dvics is a monotonically adjustabl programmabl dvic, th V OS of th ALD2722E can b adjustd many tims in both dirctions. Onc programmd, th st V OS lvls ar stord prmanntly, vn whn th dvic powr is rmovd. Functional Dscription of ALD2722E Th ALD2722E is pr-programmd at th factory undr standard oprating conditions for minimum quivalnt input offst voltag. It also has a guarantd offst voltag program rang, which is idal for applications that rquir lctrical offst voltag programming. Th ALD2722E is an oprational amplifir that can b trimmd with usr application-spcific programming or insystm programming conditions. Usr application-spcific circuit programming rfrs to th situation whr th Total Input Offst Voltag of th ALD2722E can b trimmd with th actual intndd oprating conditions. For xampl, an application circuit may hav +5V and -5V powr supplis, and th oprational amplifir input is biasd at +1V, and an avrag oprating tmpratur at +85 C. Th circuit can b wird up to ths conditions within an nvironmntal chambr with th ALD2722E insrtd into a tst sockt connctd to this circuit whil it is bing lctrically trimmd. Any rror in V OS du to ths bias conditions can b automatically zrod out. Th Total V OS rror is now limitd only by th adjustabl rang and th stability of V OS, and th input nois voltag of th oprational amplifir. Thrfor, this Total V OS rror now includs V OS as V OS is traditionally spcifid; plus th V OS rror contributions from PSRR, CMRR, TCV OS, and nois. Typically this total V OS rror (V OST ) is approximatly ±25µV for th ALD2722E. In-Systm Programming rfrs to th condition whr th EPAD adjustmnt is mad aftr th ALD2722E has bn insrtd into a circuit board. In this cas, th circuit dsign must provid for th ALD2722E to oprat in normal mod and in programming mod. On of th bnfits of in-systm programming is that not only is th ALD2722E offst voltag from oprating bias conditions accountd for, any rsidual rrors introducd by othr circuit componnts, such as rsistor or snsor inducd voltag rrors, can also b corrctd. In this way, th in-systm circuit output can b adjustd to a dsird lvl, liminating th nd for anothr trimming function. Functional Dscription of ALD2722 Th ALD2722 is pr-programmd at th factory undr standard oprating conditions for minimum quivalnt input offst voltag. Th ALD2722 offrs similar programmabl faturs as th ALD2722E, but with a mor limitd offst voltag program rang. In is intndd for standard oprational amplifir applications, whr littl or no lctrical porggramming by th usr is ncssary. USER PROGRAMMABLE V OS FEATURE Each ALD2722E/ALD2722 has four additional pins, compard to a convntional dual oprational amplifir which has ight pins. Ths four additional pins ar namd VE1A, VE2A for op amp A and VE1B, VE2B for op amp B. Each of ths pins VE1A, VE2A, VE1B, VE2B (rprsntd by VExx) ar connctd to a sparat, intrnal offst bias circuit. VExx pins hav initial intrnal bias voltag valus of approximatly 1V to 2V. Th voltag on ths pins can b programmd using th ALD E1 EPAD Programmr and th appropriat Adaptr Modul. Th usful programming rang of voltags on VExx pins ar 1V to 4V. VExx pins ar programming pins, usd during lctrical programming mod to injct charg into th intrnal EPADs. Incrasing voltag on VE1A/VE1B dcrass th offst voltag whras incrasing voltag on VE2A/VE2B incrass th offst voltag of op amp A and op amp B, rspctivly. Th injctd charg is thn prmanntly stord. Aftr programming, VExx pins must b lft opn in ordr for ths voltags to rmain at th programmd lvls. During programming, voltags on VExx pins ar incrasd incrmntally to program th offst voltag of th oprational amplifir to th dsird V OS. Not that dsird V OS can b any valu within th offst voltag programmabl rangs, and can b qual zro, a positiv valu or a ngativ valu. This V OS valu can also b rprogrammd to a diffrnt valu at a latr tim, providd that th usful VE1x or VE2x programming voltag rang has not bn xcdd. VExx pins can also srv as capacitivly coupld input pins. Intrnally, VE1 and VE2 ar programmd and connctd diffrntially. Tmpratur drift ffcts btwn th two intrnal offst bias circuits cancl ach othr and introduc lss nt tmpratur drift cofficint chang than offst voltag trimming tchniqus such as offst adjustmnt with an xtrnal trimmr potntiomtr. Whil programming, V+, VE1 and VE2 pins may b altrnatly pulsd with 12V (approximatly) pulss gnratd by th EPAD Programmr. In-systm programming rquirs th ALD2722E application circuit to accommodat ths programming pulss. This can b accomplishd by adding rsistors at crtain appropriat circuit nods. For mor information, s Application Not AN17. ALD2722E/ALD2722 Advancd Linar Dvics 2 of 13
3 ABSOLUTE MAXIMUM RATINGS Supply voltag, V+ 1.6V Diffrntial input voltag rang -.3V to V+ +.3V Powr dissipation 6 mw Oprating tmpratur rang SB, PB packags C to +7 C DB packag -55 C to +125 C Storag tmpratur rang -65 C to +15 C Lad tmpratur, 1 sconds +26 C CAUTION: ESD Snsitiv Dvic. Us static control procdurs in ESD controlld nvironmnt. OPERATING ELECTRICAL CHARACTERISTICS T A = 25 o C V S = ±2.5V unlss othrwis spcifid 2722E 2722 Paramtr Symbol Min Typ Max Min Typ Max Unit Tst Conditions Supply Voltag VS ±2. ±5. ±2. ±5. V Dual Supply V V Singl Supply Initial Input Offst Voltag 1 VOS i µv RS 1KΩ Offst Voltag Program Rang 2 VOS ±5 ±7 ±.5 ±2 mv Programmd Input Offst VOS µv At usr spcifid Voltag Error 3 targt offst voltag Total Input Offst Voltag 4 VOST µv At usr spcifid targt offst voltag Input Offst Currnt 5 IOS pa TA = 25 C pa C TA +7 C Input Bias Currnt 5 IB pa TA = 25 C pa C TA +7 C Input Voltag Rang 6 VIR V V+ = +5V V VS = ±2.5V Input Rsistanc RIN Ω Input Offst Voltag Drift 7 TCVOS 7 7 µv/ C RS 1KΩ Initial Powr Supply PSRR i db RS 1KΩ Rjction Ratio 8 Initial Common Mod CMRR i 9 9 db RS 1KΩ Rjction Ratio 8 Larg Signal Voltag Gain AV V/mV RL =1KΩ 1 1 V/mV C TA +7 C VO low V RL =1MΩ V =5V Output Voltag Rang VO high V C TA +7 C VO low V RL =1KΩ VO high V C TA +7 C Output Short Circuit Currnt ISC 8 8 ma * NOTES 1 through 9, s sction titld "Dfinitions and Dsign Nots". ALD2722E/ALD2722 Advancd Linar Dvics 3 of 13
4 OPERATING ELECTRICAL CHARACTERISTICS (cont'd) T A = 25 o C V S = ±2.5V unlss othrwis spcifid 2722E 2722 Paramtr Symbol Min Typ Max Min Typ Max Unit Tst Conditions Supply Currnt IS ma VIN = V No Load Powr Dissipation PD mw VS = ±2.5V Input Capacitanc CIN 1 1 pf Maximum Load Capacitanc CL 4 4 pf Gain = pf Gain = 5 Equivalnt Input Nois Voltag n nv/ Hz f = 1KHz Equivalnt Input Nois Currnt in.6.6 fa/ Hz f =1Hz Bandwidth BW MHz Slw Rat SR V/µs AV = +1 RL = 1KΩ Ris tim tr.2.2 µs RL = 1KΩ Ovrshoot Factor 1 1 % RL=1KΩ CL=5pF Sttling Tim ts 3 3 µs.1% AV = -1 RL= 5KΩ CL = 5pF Channl Sparation CS db AV = 1 T A = 25 o C V S = ±2.5V unlss othrwis spcifid 2722E 2722 Paramtr Symbol Min Typ Max Min Typ Max Unit Tst Conditions Avrag Long Trm Input Offst VOS.2.2 µv/ Voltag Stability 9 tim 1 hrs Initial VE Voltag VE1 i, VE2 i V Programmabl Chang of VE1, VE V VE Rang Programmd VE Voltag Error (VE1-VE2).1.1 % VE Pin Lakag Currnt ib -5-5 µa * NOTES 1 through 9, s sction titld "Dfinitions and Dsign Nots". ALD2722E/ALD2722 Advancd Linar Dvics 4 of 13
5 OPERATING ELECTRICAL CHARACTERISTICS (cont'd) V S = ±2.5V -55 C T A +125 C unlss othrwis spcifid 2722E 2722 Paramtr Symbol Min Typ Max Min Typ Max Unit Tst Conditions Initial Input offst Voltag VOS i.7.7 mv RS 1KΩ Input Offst Currnt IOS na Input Bias Currnt IB na Initial Powr Supply PSRR i db RS 1KΩ Rjction Ratio 8 Initial Common Mod CMRR i db RS 1KΩ Rjction Ratio 8 Larg Signal Voltag Gain AV V/mV RL = 1KΩ Output Voltag Rang VO low V VO high V RL = 1KΩ T A = 25 o C V S = ±5.V unlss othrwis spcifid 2722E 2722 Paramtr Symbol Min Typ Max Min Typ Max Unit Tst Conditions Initial Powr Supply PSRR i db RS 1KΩ Rjction Ratio 8 Initial Common Mod CMRRi db RS 1KΩ Rjction Ratio 8 Larg Signal Voltag Gain AV V/mV RL = 1KΩ Output Voltag Rang VO low V RL = 1KΩ VO high Bandwidth BW MHz Slw Rat SR V/µs AV = +1, CL = 5pF ALD2722E/ALD2722 Advancd Linar Dvics 5 of 13
6 DEFINITIONS AND DESIGN NOTES: 1. Initial Input Offst Voltag is th initial offst voltag of th ALD2722E/ALD2722 oprational amplifir whn shippd from th factory. Th dvic has bn pr-programmd and tstd for programmability. 2. Offst Voltag Program Rang is th rang of adjustmnt of usr spcifid targt offst voltag. This is typically an adjustmnt in ithr th positiv or th ngativ dirction of th input offst voltag from an initial input offst voltag. Th input offst programming pins, VE1A/VE1B or VE2A/VE2B, chang th input offst voltag in th ngativ or positiv dirction, for ach of th amplifirs, A or B rspctivly. Usr spcifid targt offst voltag can b any offst voltag within this programming rang. 3. Programmd Input Offst Voltag Error is th final offst voltag rror aftr programming whn th Input Offst Voltag is at targt Offst Voltag. This paramtr is sampl tstd. 4. Total Input Offst Voltag is th sam as Programmd Input Offst Voltag, corrctd for systm offst voltag rror. Usually this is an all inclusiv systm offst voltag, which also includs offst voltag contributions from input offst voltag, PSRR, CMRR, TCVOS and nois. It can also includ rrors introducd by xtrnal componnts, at a systm lvl. Programmd Input Offst Voltag and Total Input Offst Voltag is not ncssarily zro offst voltag, but an offst voltag st to compnsat for othr systm rrors as wll. This paramtr is sampl tstd. 5. Th Input Offst and Bias Currnts ar ssntially input protction diod rvrs bias lakag currnts. This low input bias currnt assurs that th analog signal from th sourc will not b distortd by it. For applications whr sourc impdanc is vry high, it may b ncssary to limit nois and hum pickup through propr shilding. 6. Input Voltag Rang is dtrmind by two paralll complmntary input stags that ar summd intrnally, ach stag having a sparat input offst voltag. Whil Total Input Offst Voltag can b trimmd to a dsird targt valu, it is ssntial to not that this trimming occurs at only on usr slctd input bias voltag. Dpnding on th slctd input bias voltag rlativ to th powr supply voltags, offst voltag trimming may affct on or both input stags. For th ALD2722E/ ALD2722, th switching point btwn th two stags occurs at approximatly 1.5V abov ngativ supply voltag. 7. Input Offst Voltag Drift is th avrag chang in Total Input Offst Voltag as a function of ambint tmpratur. This paramtr is sampl tstd. 8. Initial PSRR and initial CMRR spcifications ar providd as rfrnc information. Aftr programming, rror contribution to th offst voltag from PSRR and CMRR is st to zro undr th spcific powr supply and common mod conditions, and bcoms part of th Programmd Input Offst Voltag Error. 9. Avrag Long Trm Input Offst Voltag Stability is basd on input offst voltag shift through oprating lif tst at 125 C xtrapolatd to TA = 25 C, assuming activation nrgy of 1.V. This paramtr is sampl tstd. ADDITIONAL DESIGN NOTES: A. Th ALD2722E/ALD2722 is intrnally compnsatd for unity gain stability using a novl schm which producs a singl pol rol off in th gain charactristics whil providing mor than 7 dgrs of phas margin at unity gain frquncy. A unity gain buffr using th ALD2722E/ALD2722 will typically driv 4pF of xtrnal load capacitanc. B. Th ALD2722E/ALD2722 has complmntary p-channl and n-channl input diffrntial stags connctd in paralll to accomplish rail-to-rail input common mod voltag rang. Th switching point btwn th two diffrntial stags is 1.5V abov ngativ supply voltag. For applications such as invrting amplifirs or non-invrting amplifirs with a gain largr than 2.5 (5V opration), th common mod voltag dos not mak xcursions blow this switching point. Howvr, this switching dos tak plac if th oprational amplifir is connctd as a railto-rail unity gain buffr and th dsign must allow for input offst voltag variations. C. Th output stag consists of class AB complmntary output drivrs. Th oscillation rsistant fatur, combind with th railto-rail input and output fatur, maks th ALD2722E/ ALD2722 an ffctiv analog signal buffr for high sourc impdanc snsors, transducrs, and othr circuit ntworks. D. Th ALD2722E/ALD2722 has static discharg protction. Howvr, car must b xrcisd whn handling th dvic to avoid strong static filds that may dgrad a diod junction, causing incrasd input lakag currnts. Th usr is advisd to powr up th circuit bfor, or simultanously with, any input voltags applid and to limit input voltags not to xcd.3v of th powr supply voltag lvls. E. VExx ar high impdanc trminals, as th intrnal bias currnts ar st vry low to a fw microamprs to consrv powr. For som applications, ths trminals may nd to b shildd from xtrnal coupling sourcs. For xampl, digital signals running narby may caus unwantd offst voltag fluctuations. Car during th printd circuit board layout, to plac ground tracs around ths pins and to isolat thm from digital lins, will gnrally liminat such coupling ffcts. In addition, optional dcoupling capacitors of 1pF or gratr valu can b addd to VExx trminals. F. Th ALD2722E/ALD2722 is dsignd for us in low voltag, micropowr circuits. Th maximum oprating voltag during normal opration should rmain blow 1V at all tims. Car should b takn to insur that th application in which th dvic is usd dos not xprinc any positiv or ngativ transint voltags that will caus any of th trminal voltags to xcd this limit. G. All inputs or unusd pins xcpt VExx pins should b connctd to a supply voltag such as Ground so that thy do not bcom floating pins, sinc input impdanc at ths pins is vry high. If any of ths pins ar lft undfind, thy may caus unwantd oscillation or intrmittnt xcssiv currnt drain. As ths dvics ar built with CMOS tchnology, normal oprating and storag tmpratur limits, ESD and latchup handling prcautions prtaining to CMOS dvic handling should b obsrvd. ALD2722E/ALD2722 Advancd Linar Dvics 6 of 13
7 TYPICAL PERFORMANCE CHARACTERISTICS COMMON MODE INPUT VOLTAGE RANGE (V) ±7 ±6 ±5 ±4 ±3 ±2 ±1 COMMON MODE INPUT VOLTAGE RANGE AS A FUNCTION OF SUPPLY VOLTAGE T A = 25 C ±1 ±2 ±3 ±4 ±5 ±6 ±7 SUPPLY VOLTAGE (V) OPEN LOOP VOLTAGE GAIN (V/mV) OPEN LOOP VOLTAGE GAIN AS A FUNCTION OF SUPPLY VOLTAGE AND TEMPERATURE 1 } -55 C } +25 C } +125 C ±2 ±4 ±6 SUPPLY VOLTAGE (V) R L = 1KΩ R L = 5KΩ ±8 INPUT BIAS CURRENT (pa) INPUT BIAS CURRENT AS A FUNCTION OF AMBIENT TEMPERATURE V S = ±2.5V SUPPLY CURRENT (ma) SUPPLY CURRENT AS A FUNCTION OF SUPPLY VOLTAGE INPUTS GROUNDED OUTPUTS UNLOADED T A = -55 C -25 C +25 C +8 C +125 C AMBIENT TEMPERATURE ( C) ±1 ±2 ±3 ±4 SUPPLY VOLTAGE (V) ±5 ±6 CHANGE IN INPUT OFFSET VOLTAGE VOS (mv) ADJUSTMENT IN INPUT OFFSET VOLTAGE AS A FUNCTION OF CHANGE IN VE1 AND VE VE2 VE1 OPEN LOOP VOLTAGE GAIN (db) OPEN LOOP VOLTAGE AS A FUNCTION OF FREQUENCY V S = ±2.5V T A = 25 C PHASE SHIFT IN DEGREES CHANGE IN VE1 AND VE2 (V) K 1K 1K 1M 1M FREQUENCY (Hz) ALD2722E/ALD2722 Advancd Linar Dvics 7 of 13
8 TYPICAL PERFORMANCE CHARACTERISTICS (cont'd) ±7 OUTPUT VOLTAGE SWING AS A FUNCTION OF SUPPLY VOLTAGE LARGE - SIGNAL TRANSIENT RESPONSE OUTPUT VOLTAGE SWING (V) ±6 ±5 ±4 ±3 ±2-55 C T A 125 C R L = 1KΩ R L = 1KΩ R L = 2KΩ 5V/div 1V/div V S = ±2.5V T A = 25 C R L = 1KΩ C L = 5pF 2µs/div ±1 ±2 ±3 ±4 ±5 ±6 ±7 SUPPLY VOLTAGE (V) OPEN LOOP VOLTAGE GAIN AS A FUNCTION OF LOAD RESISTANCE SMALL - SIGNAL TRANSIENT RESPONSE OPEN LOOP VOLTAGE GAIN (V/mV) V S = ±2.5V T A = 25 C 1mV/div 2mV/div V S = ±2.5V T A = 25 C R L = 1KΩ C L = 5pF 2µs/div 1K 1K 1K 1K LOAD RESISTANCE (Ω) 1 DISTRIBUTION OF TOTAL INPUT OFFSET VOLTAGE BEFORE AND AFTER PERCENTAGE OF UNITS (%) EXAMPLE B: V OST AFTER EPAD PROGRAMMING V OST TARGET = -75µV EXAMPLE A: V OST AFTER EPAD PROGRAMMING V OST TARGET =.µv V OST BEFORE EPAD PROGRAMMING TOTAL INPUT OFFSET VOLTAGE (µv) ALD2722E/ALD2722 Advancd Linar Dvics 8 of 13
9 TYPICAL PERFORMANCE CHARACTERISTICS (cont'd) EQUIVALENT INPUT OFFSET VOLTAGE DUE TO CHANGE IN SUPPLY VOLTAGE (µv) TWO EXAMPLES OF EQUIVALENT INPUT OFFSET VOLTAGE DUE TO CHANGE IN SUPPLY VOLTAGE vs. SUPPLY VOLTAGE EXAMPLE A: V OS EPAD PROGRAMMED AT V SUPPLY = +5V PSRR = 8 db EXAMPLE B: V OS EPAD PROGRAMMED AT V SUPPLY = +8V SUPPLY VOLTAGE (V) EQUIVALENT INPUT OFFSET VOLTAGE DUE TO CHANGE IN COMMON MODE VOLTAGE (µv) THREE EXAMPLES OF EQUIVALENT INPUT OFFSET VOLTAGE DUE TO CHANGE IN COMMON MODE VOLTAGE vs. COMMON MODE VOLTAGE EXAMPLE B: V OS EPAD PROGRAMMED AT V IN = -4.3V EXAMPLE A: V OS EPAD PROGRAMMED AT V IN = V V SUPPLY = ±5V CMRR = 8dB EXAMPLE C: V OS EPAD PROGRAMMED AT V IN = +5V COMMON MODE VOLTAGE (V) EQUIVALENT INPUT OFFSET VOLTAGE DUE TO CHANGE IN COMMON MODE VOLTAGE (µv) EXAMPLE OF MINIMIZING EQUIVALENT INPUT OFFSET VOLTAGE FOR A COMMON MODE VOLTAGE RANGE OF.5V CMRR = 8dB COMMON MODE VOLTAGE RANGE OF.5V V OS EPAD PROGRAMMED AT COMMON MODE VOLTAGE OF.25V COMMON MODE VOLTAGE (V) ALD2722E/ALD2722 Advancd Linar Dvics 9 of 13
10 TYPICAL PERFORMANCE CHARACTERISTICS (cont'd) APPLICATION SPECIFIC / IN-SYSTEM PROGRAMMING Exampls of applications whr accumulatd total input offst voltag from various contributing sourcs is minimizd undr diffrnt sts of usr-spcifid oprating conditions TOTAL INPUT OFFSET VOLTAGE (µv) V OS BUDGET AFTER + X V OS BUDGET BEFORE TOTAL INPUT OFFSET VOLTAGE (µv) V OS BUDGET AFTER + X V OS BUDGET BEFORE EXAMPLE A EXAMPLE B TOTAL INPUT OFFSET VOLTAGE (µv) V OS BUDGET BEFORE + EXAMPLE C X V OS BUDGET AFTER TOTAL INPUT OFFSET VOLTAGE (µv) V OS BUDGET AFTER + EXAMPLE D X V OS BUDGET BEFORE + X Dvic input V OS PSRR quivalnt V OS CMRR quivalnt V OS T A quivalnt V OS Nois quivalnt V OS Extrnal Error quivalnt V OS Total Input V OS aftr EPAD Programming ALD2722E/ALD2722 Advancd Linar Dvics 1 of 13
11 SOIC-14 PACKAGE DRAWING 14 Pin Plastic SOIC Packag Millimtrs Inchs E Dim A Min Max Min Max A S (45 ) b C D E BSC.5 BSC D H L ø 8 8 A S A 1 b S (45 ) H C L ø ALD2722E/ALD2722 Advancd Linar Dvics 11 of 13
12 PDIP-14 PACKAGE DRAWING 14 Pin Plastic DIP Packag Millimtrs Inchs E E1 Dim A A 1 Min Max Min Max A b b c D E S D E A 2 A L S A 1 L ø b b 1 c 1 ø ALD2722E/ALD2722 Advancd Linar Dvics 12 of 13
13 CERDIP-14 PACKAGE DRAWING 14 Pin CERDIP Packag Millimtrs Inchs E E 1 Dim A A 1 Min Max Min Max b b C D D E E s A BSC 7.62 BSC.1 BSC.3 BSC A L L b L 2 b 1 L 1 L 1 L 2 S Ø C 1 ø ALD2722E/ALD2722 Advancd Linar Dvics 13 of 13
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