// PRODUCT DESCRIPTION Th (singl),sgm8 (dual) and SGM8 (quad) ar rail-to-rail input and output voltag fdback amplifirs offring low cost. Thy hav a wid input common-mod voltag rang and output voltag swing, and tak th minimum oprating supply voltag down to.v and th maximum rcommndd supply voltag is.v. All ar spcifid ovr th xtndd -0 to + tmpratur rang. Th // provid 0kHz bandwidth at a low currnt consumption of.7µa pr amplifir. Vry low input bias currnts of 0.pA nabl th // to b usd for intgrators, photodiod amplifirs, and pizolctric snsors. Rail-to-Rail inputs and outputs ar usful to dsignrs buffring ASIC in singl-supply systms. Applications for ths amplifirs includ safty monitoring, portabl quipmnt, battry and powr supply control, and signal conditioning and intrfacing for transducrs in vry low powr systms. Th is availabl in th tiny SOT- and SO-8 packags. Th SGM8 coms in th miniatur SO-8 and MSOP-8 packags. Th SGM8 is offrd in TSSOP- and SO- packags. FEATURES Low Cost Rail-to-Rail Input and Output 0.8mV Typical V OS Unity Gain Stabl Gain Bandwidth Product: 0kHz Vry Low Input Bias Currnts : 0.pA Oprats on.v to.v Supplis Input Voltag Rang = -0.V to +.V with V S =.V Low Supply Currnt:.7µA/Amplifir Small Packaging Availabl in SO-8 and SOT- SGM8 Availabl in SO-8 and MSOP-8 SGM8 Availabl in SO- and TSSOP- PIN CONFIGURATIONS (Top Viw) OUT -VS +IN SOT- +VS -IN OUT A -INA +INA -VS SGM8 SO-8 / MSOP-8 8 7 +VS OUT B -INB +INB APPLICATIONS ASIC Input or Output Amplifir Snsor Intrfac Pizo Elctric Transducr Amplifir Mdical Instrumntation Mobil Communication Audio Output Portabl Systms NC -IN +IN -VS NC = NO CONNECT SO-8 8 7 NC +VS OUT NC OUT A -IN A +IN A +VS +INB -INB OUT B 7 SGM8 0 9 8 OUT D -IND +IND -VS +INC -INC OUT C Smok Dtctors SO-/TSSOP- Mobil Tlphon Notbook PC PCMCIA Cards Battry-Powrd Equipmnt REV. B.
// PACKAGE/ORDERING INFORMATION MODEL SGM8 SGM8 ORDER NUMBER PACKAGE DESCRIPTION PACKAGE OPTION MARKING INFORMATION XN/TR SOT- Tap and Rl, 000 8 XS/TR SO-8 Tap and Rl, 00 XS SGM8XS/TR SO-8 Tap and Rl, 00 SGM8XS SGM8XMS/TR MSOP-8 Tap and Rl, 000 SGM8XMS SGM8XS/TR SO- Tap and Rl, 00 SGM8XS SGM8XTS/TR TSSOP- Tap and Rl, 000 SGM8XTS ABSOLUTE MAXIMUM RATINGS Supply Voltag, V+ to V-...7.V Common-Mod Input Voltag... (-V S) - 0.V to (+V S) + 0.V Storag Tmpratur Rang... to +0 Junction Tmpratur...0 Oprating Tmpratur Rang... to +0 Packag Thrmal Rsistanc @ T A = SOT-, θ JA... 90 /W SO-8, θ JA... /W MSOP-8, θ JA... /W Lad Tmpratur Rang (Soldring 0 sc)...0 ESD Suscptibility HBM...000V MM...00V NOTE: Strsss abov thos listd undr Absolut Maximum Ratings may caus prmannt damag to th dvic. This is a strss rating only; functional opration of th dvic at ths or any othr conditions abov thos indicatd in th oprational sction of this spcification is not implid. Exposur to absolut maximum rating conditions for xtndd priods may affct dvic rliability. CAUTION This intgratd circuit can b damagd by ESD if you don t pay attntion to ESD protction. SGMICRO rcommnds that all intgratd circuits b handld with appropriat prcautions. Failur to obsrv propr handling and installation procdurs can caus damag. ESD damag can rang from subtl prformanc dgradation to complt dvic failur. Prcision intgratd circuits may b mor suscptibl to damag bcaus vry small paramtric changs could caus th dvic not to mt its publishd spcifications.
// ELECTRICAL CHARACTERISTICS: V S = +V (At R L = 00KΩ connctd to Vs/ and = Vs/, unlss othrwis notd.) PARAMETER SYMBOL CONDITIONS INPUT CHARACTERISTICS Input Offst Voltag Input Bias Currnt Input Offst Currnt Common-Mod Voltag Rang Common-Mod Rjction Ratio Opn-Loop Voltag Gain Input Offst Voltag Drift OUTPUT CHARACTERISTICS Output Voltag Swing from Rail Output Currnt POWER SUPPLY Oprating Voltag Rang Powr Supply Rjction Ratio Quiscnt Currnt / Amplifir DYNAMIC PERFORMANCE Gain-Bandwidth Product Slw Rat Sttling Tim to 0.% V OS I B I OS V CM CMRR A OL V OS / T I OUT PSRR I Q GBP SR t S V S =.V V S =.V, V CM = -0.V to V V S =.V, V CM = -0.V to.v R L = 00KΩ,Vo = 0.V to.9v R L =00KΩ,Vo = 0.0V to.9v // /MAX OVER TEMPERATURE / + + UNITS MAX ±0.8 0. 0. -0. to +. 9 8 00 0.7 R L = 00KΩ 0.00 V S = +.V to +.V V CM = (-V S ) + 0. I OUT = 0 C L = 00pF NOISE PERFORMANCE Voltag Nois Dnsity n f = khz f = 0kHz G = +, V Output Stp G = +, V Output Stp 9.7 0 0.0 0 ±. 7 8 90.. mv pa pa V db db db db µv/ V ma V V db µa khz V/µs µs nv/ Hz nv/ Hz MAX MAX MAX MAX Spcifications subjct to chang without notic.
// ICAL PERFORMANCE CHARACTERISTICS At T A= +, V S = +V, and R L=00KΩ connctd to Vs/, unlss othrwis notd. Small-Signal Stp Rspons G = + R L = 00KΩ C L = 0pF Small-Signal Stp Rspons G = + R L = 00KΩ C L = 00pF 0mV/div 0mV/div 0µs/div 0µs/div V/div Larg-Signal Stp Rspons 00µs/div G = + C L = 00pF R L = 00KΩ Small-Signal Ovrshoot (%) 0 0 0 0 0 0 Small-Signal Ovrshoot vs. Load Capacitanc G = - R FB = 0KΩ G = + R L = 00KΩ 0 00 000 Load Capacitanc (pf) Maximum Output Voltag vs. Frquncy V S =.V Quiscnt and Short-Circuit Currnt vs. Supply Voltag 0 Output Voltag (V p-p ) V S = V V S =.V Maximum Output Voltag Without Slw-Rat Inducd Distortion Quiscnt Currnt (µa)... I SC I Q 7.. 0 7. Short-Circuit Currnt (ma) 0 0 00 Frquncy (khz).... Supply Voltag (V)
// ICAL PERFORMANCE CHARACTERISTICS At T A= +, V S = +V, and R L=00kΩ connctd to Vs/, unlss othrwis notd. CMRR,PSRR (db) 00 90 80 70 0 0 0 0 0 0 0 CMRR and PSRR vs. Frquncy CMRR PSRR 0.0 0. 0 00 000 Frquncy (khz) Voltag Nois (nv/ Hz) 000 00 0 Input Voltag Nois Spctral Dnsity vs. Frquncy 0.0 0. 0 00 Frquncy (khz) Output Voltag (V) 0 Output Voltag Swing vs. Output Currnt V S = V Sourcing Currnt -0-0 Sinking Currnt 0 8 0 Output Currnt (ma) Output Voltag (V) 0 Output Voltag Swing vs. Output Currnt Sourcing Currnt Sinking Currnt -0-0 V S = V 0 0 0 0 Output Currnt (ma) Supply Currnt (µa) 7 V S = V Supply Currnt vs. Tmpratur - - - 7 9 Tmpratur ( )
// APPLICATION NOTES Driving Capacitiv Loads Th SGM8X can dirctly driv 0pF in unity-gain without oscillation. Th unity-gain followr (buffr) is th most snsitiv configuration to capacitiv loading. Dirct capacitiv loading rducs th phas margin of amplifirs and this rsults in ringing or vn oscillation. Applications that rquir gratr capacitiv driv capability should us an isolation rsistor btwn th output and th capacitiv load lik th circuit in Figur. Th isolation rsistor R ISO and th load capacitor C L form a zro to incras stability. Th biggr th R ISO rsistor valu, th mor stabl will b. Not that this mthod rsults in a loss of gain accuracy bcaus R ISO forms a voltag dividr with th R LOAD. Powr-Supply Bypassing and Layout Th SGM8X family oprats from ithr a singl +.V to +.V supply or dual ±.V to ±.7V supplis. For singl-supply opration, bypass th powr supply V DD with a 0.µF cramic capacitor which should b placd clos to th V DD pin. For dual-supply opration, both th V DD and th V SS supplis should b bypassd to ground with sparat 0.µF cramic capacitors..µf tantalum capacitor can b addd for bttr prformanc. V DD 0µF V DD 0µF 0.µF 0.µF R ISO V IN C L Figur. Indirctly Driving Havy Capacitiv Load Vn Vp Vn Vp 0µF An improvmnt circuit is shown in Figur, It provids DC accuracy as wll as AC stability. R F provids th DC accuracy by conncting th invrting signal with th output, C F and R Iso srv to countract th loss of phas margin by fding th high frquncy componnt of th output signal back to th amplifir s invrting input, thrby prsrving phas margin in th ovrall fdback loop. 0.µF V SS (GND) V SS Figur. Amplifir with Bypass Capacitors C F R F R ISO V IN C L R L Figur. Indirctly Driving Havy Capacitiv Load with DC Accuracy For no-buffr configuration, thr ar two othrs ways to incras th phas margin: (a) by incrasing th amplifir s gain or (b) by placing a capacitor in paralll with th fdback rsistor to countract th parasitic capacitanc associatd with invrting nod.
// ICAL APPLICATION CIRCUITS Diffrntial Amplifir Th circuit shown in Figur prforms th diffrnc function. If th rsistors ratios ar qual (R / R = R / R ), thn = (Vp Vn) R / R + V REF. Vn Vp R R Low Pass Activ Filtr Th low pass filtr shown in Figur has a DC gain of ( - R / R ) and th db cornr frquncy is /πr C. Mak sur th filtr is within th bandwidth of th amplifir. Th Larg valus of fdback rsistors can coupl with parasitic capacitanc and caus undsird ffcts such as ringing or oscillation in high-spd amplifirs. Kp rsistors valu as low as possibl and consistnt with output loading considration. C R R V IN R R V REF Figur. Diffrntial Amplifir Instrumntation Amplifir Th circuit in Figur prforms th sam function as that in Figur but with th high input impdanc. R = R // R Figur. Low Pass Activ Filtr Vn R R Vp R R V REF Figur. Instrumntation Amplifir 7
// PACKAGE OUTLINE DIMENSIONS SOT- D b A A E A E L L C 0 θ 0.0 Symbol In Millimtrs In Inchs Min Max Min Max A.00.0 0.0 0.09 A 0.000 0.00 0.000 0.00 A.00.0 0.0 0.0 b 0.00 0.00 0.0 0.0 C 0.00 0.00 0.00 0.008 D.80.00 0. 0.9 E.00.700 0.09 0.07 E.0.90 0.0 0. 0.90 0.07.800.000 0.07 0.079 L 0.700REF 0.08REF L 0.00 0.00 0.0 0.0 θ 0 8 0 8 8
// PACKAGE OUTLINE DIMENSIONS SO-8 D C Symbol In Millimtrs In Inchs L Min Max Min Max A.0.70 0.0 0.09 A 0.00 0.0 0.00 0.00 θ E E B A A A A.0.0 0.0 0.0 B 0.0 0.0 0.0 0.00 C 0.90 0.0 0.007 0.00 D.780.000 0.88 0.97 E.800.000 0.0 0.7 E.800.00 0.8 0.8.70 0.00 L 0.00.70 0.0 0.00 θ 0 8 0 8 SG Micro Limitd 9
// PACKAGE OUTLINE DIMENSIONS MSOP-8 b C E E A L θ A A Symbol In Millimtrs In Inchs Min Max Min Max A 0.800.00 0.0 0.07 A 0.000 0.00 0.000 0.008 A 0.70 0.970 0.00 0.08 b 0.0 0.0 C 0. 0.00 D.900.00 0. 0. 0. 0.0 E.900.00 0. 0. E.700.00 0.8 0.0 L 0.0 0.0 0.0 0.0 θ 0 0 D SG Micro Limitd 0
// PACKAGE OUTLINE DIMENSIONS TSSOP- E # PIN D +0 INDEX Φ.0±0.0 0. -0. DEP A E A A A c B c B L BASE METAL θ S R R L L b b θ θ Symbol In Millimtrs NOM MAX A.0 A 0.0 0. A 0.90.00.0 A 0. 0. 0. b 0.0 0.8 b 0.0 0. 0. c 0.0 0.9 c 0.0 0. 0. D.8.9.0 E.0.0.0 E.0.0.0 0. BSC L 0. 0.0 0.7 L.00 REF L 0. BSC R 0.09 0.0 SECTION B-B R 0.09 S 0.0 θ 0 8 θ 0 θ 0 SG Micro Limitd
// PACKAGE OUTLINE DIMENSIONS SO- E E A A A BASE METAL θ θ INDEX Φ0.8±0. DEP0.±0. b D b b Φ.0±0. BTM E-MARK DEP0.±0.0 0. M 0.0 A WITH PLATING L R R θ B B L L θ c c h θ h Symbol In Millimtrs NOM MAX A..0.7 A 0.0 0. 0. A... A 0. 0. 0.7 b 0. 0.9 b 0. 0.0 0. c 0. 0. c 0. 0.0 0. D 8. 8. 8.7 E.80.00.0 E.80.90.00.7 BSC L 0. 0.0 0.80 L.0 REF L 0. BSC R 0.07 R 0.07 h 0.0 0.0 0.0 θ 0 8 θ 8 0 θ 8 0 θ 7 9 θ 7 9 SECTION B-B 0/009 REV. B. SGMICRO is ddicatd to provid high quality and high prformanc analog IC products to customrs. All SGMICRO products mt th highst industry standards with strict and comprhnsiv tst and quality control systms to achiv world-class consistncy and rliability. For information rgarding SGMICRO Corporation and its products, s SG Micro Limitd