19-1087; Rev 1; 897 SA AAILYI Single/Dual/Quad, Wide-Bandwidth, Low-Power, Single-Supply Rail-to-Rail 1/0 Op Amps General Description Features The MAX4122-MAX4129 family of operational amplifiers 5-Pin SOT23 Package (MAX4122/4) combines wide bandwidth and excellent DC accuracy with 2.7 to 46.5V Single-Supply O ti Rail-to-Rail operation at the inputs and outputs. These FEN TO +0.0 single-Supply Uperation devices require only 650A per amplifier, and operate from either a single supply (+2.7V to +6.5V) or dual supplies + an_-Bai : (1.35V to +3.25V) with a common-mode voltage range Rail-to-Rail Output Voltage Swing that extends 250mV beyond VEE and Voc. They are capa- 5MHz Gain-Bandwidth Product (MAX4122/3/6/7/9) ble of driving 250 loads. The MAX4122/MAX4123/ 25MHz Gain-Bandwidth Product (MAX4124/5/8) MAX4126/MAX41 27/MAX4129 have a 5MHz gain band- width product, while the decompensated MAX4124/ MAX4125/MAX4128 (stable at closed-looped gains of 10 or greater) have a 25MHz gain bandwidth product. In addition, the MAX4123/MAX4125/MAX41 27 feature a shutdown mode in which the outputs are placed ina high-impedance state and the supply current is reduced to only 25yA per amplifier. i. a Stable with 500pF Capacitive Loads With their rail-to-rail input common-mode range and ; . output swing, these amplifiers are ideal for low-voltage Unity-Gain Stable (MAX4122/3/6/7/9) single-supply operation. Although the minimum operat- Stable at Gains > 10V/V (MAX4124/5/8) ing voltage is specified at 2.7V, the devices typically operate down to 1.8V. In addition, low offset voltage and high speed make them the ideal signal-condition- ing stages for precision, low-voltage, data-acquisition Rail-to-Rail Input Common-Mode Voltage Range + 650A Quiescent Current per Amplifier 25yA4 Shutdown Function (MAX4123/5/7) 200LV Offset Voltage No Phase Reversal for Overdriven Inputs Drive 2500 Loads + + @ 6 @ Ordering Information 6cCLYUXVW-cclLVxXVN systems. The MAX4122 and MAX4124 come in the space-saving 5-pin SOT23-5 package. PART TEMP.RANGE , ACK AGE oS Applications MAX4122EUK -40T to+85 5 SOT23-5 AAAZ MAX41 23C/D OC to+70C = Dice* _ MAX4123ESA -40T to+85C 880 _ Battery- Powered Instruments Portable Equipment MAX4123EUA -40S to+85G 8 uMAX Data-Acquisition Systems Ordering Information continued at end of data sheet. Signal Conditioning Dice are specified at Ta = +25, DC parameters only. Low-Power, Low-Voltage Applications Pin Configurations appear at end of data sheet. Selection Table Typical Operating Circuit AMPS SHUT- +5V BW PIN- PART PER DOWN (MHz) | iia. MODE | PACKAGE MAXA1 22 5 1 _ 5 SOT23-5 . MAX4123 | 5 1 Yes 8 SO/IMAX 4 MAXA1 24 25 1 5 SOT23-5 5] MAXIM SERIAL MAX4 123 MAX41 25 25 1 Yes 8 SO/UMAX INTERFACE) 8 MAX41 26 2 _ 8 SO/UMAX ~~ MAXA1 27 5 2 Yes 1480 Us MAXA1 28 25 2 _ & SO/UMAX - MAX41 29 5 4 _ 1480 Rail-to-Rail is a registered trademark of Nippon Motorola, Lid. MAXLAA Maxim Iniegrated Products 1 For free samples & the latest literature: htip://www.maxim-ic.com, or phone 1-800-998-8800. For small orders, phone 408-737-7600 ext. 3468.MAX4122-MAX4129 Single/Dual/Quad, Wide-Bandwidth, Low-Power, Single-Supply Rail-to-Rail 1/0 Op Amps ABSOLUTE MAXIMUM RATINGS Supply Voltage (VCC-VEE)..... ee eee ere ener ener tte 7.5V IN+, IN-, SHDN Voltage Output Short-Circ uit Duration (Note 1) {Veo + 0.3V) to (VEE - 0.3) (short to either supply) Continuous Power Dissipation (Ta = +70C) 5-pin SOT23-5 (derate 7.1mW/C above +70) 8-pin SO (derate 5.88mW/'C above +70) 8-pin WMAX (derate 4.10mW/C above +70C) 14-pin SO (derate 8.00mW/G above +70) Note 1: Continuous Provided that the maximum package power-dissipation rating is met. Operating Temperature Range DD Ce Maximum Junction Temperature Storage Temperature Range Lead Temperature (soldering, 19sec) Stresses beyond those listed under Absolute Maximum Ralings may cause permanent damage io the device. These are siress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. DC ELECTRICAL CHARACTERISTICS (Vco = +2.7V to +6.5V, Vee = OV, Vom = OV, Vout = Vec/2, RL tied to Voc/2, SHDN > 2V (or open), Ta = +25C, unless otherwise noted.) PARAMETER CONDITIONS MIN TYP MAX | UNITS MAX4123ESA/MAX41 25 ESA +0.20 +0.60 MAX4122EUK/MAXA1 24EUK +0.35 +1.50 Vem = MAX4123EU A/MAXA1 25EUA +0.35 +1.20 Input Offset Voltage mV Vee to Voc | MAX4126ESA/MAX41 27ESD/MAX4128ESA +0.25 +0.75 MAX4126EU A/MAXA1 28EUA +0.40 +1.50 MAX4129ESD +0.35 +1.50 Input Bias Current VcM = VEE to Vcc +50 +150 nA Input Offset Current Vom = Vee to Voc +1 +12 nA Differential Input Resistance -1.5V < VpiFF< 1.5V 500 ko Common-Mode Input VEE - Voc + Vv Voltage Range 0.25 0.25 MAX4123ESA/MAM4125ESA 78 98 (VEE - MAX4122EUK/MAXA1 24EUK 67 90 0.25) < MAX4123EUA/MAX4125EUA 68 88 Commen-Mcde Rejection Ratio Vom < dB (Voc + MAX4126ESA/MAX41 27 ESD/MAX4128ESA 74 94 0.25V) MAX4126EU A/MAX4A1 28EUA 66 86 MAX412SESD 64 84 Power-Supply Rejection Ratio Voo = 2.7V to 6.5V 78 100 dB Output Resistance Ave= 1 0.1 Q Off-Leakage Current SHDN < 0.8V, VouT = OV to Voc +0.1 +1 LA Vout = 0.25V to 2.45V, RL = 100ka 92 104 Voc = 2.7V . . Vout = 0.4V to 2.3V, RL = 250 fe2 80 Large-Signal Voltage Gain dB Vv BY Vout = 0.25 to 4.75V, RL = 100ka 94 106 ce= Vout = 0.4V to 4.6V, RL = 2500 75 84 2 MA AXIAASingle/Dual/Quad, Wide-Bandwidth, Low-Power, Single-Supply Rail-to-Rail 1/0 Op Amps DC ELECTRICAL CHARACTERISTICS (continued) (Vcc = +2.7V to +6.5V, Vee = OV, Vom = OV, Vout = Vec/2, RL tied to Vec/2, SHDN > 2V (or open), Ta = +25C, unless otherwise noted.) PARAMETER CONDITIONS MIN TYP MAX | UNITS MAX4122/ | RB, = 100kQ Voc - VoH 12 20 MAX4123/ VoL - VEE 20 35 MAX4124/ Voc - VoH 240 290 MAX4125 | RL = 2500 . VoL - VEE 125 170 Output Voltage Swing v v 15 30 mv MAX4126/ | Ry = 100k conor MAX4127/ VoL - VEE 25 40 MAX4128/ Voc - VoH 280 330 Ri = 2500 MAX4129 L VoL- VEE 180 530 Output Short-Circuit Current 50 mA _ . Low 0.8 SHDN Logic Threshold MAXA1 23/MAX4125/MAX4127 High 50 Vv ig . SHDN Input Current MAX4123/MAX4125/MAXA1 27 +1 +3 pA Operating Supply-Voltage Range 27 6.5 Vv Supply Current per Ampiifi Vom = Vout = Veo/2 Woo = 2.7 p00 | a u urrent per Amplifier = = pply p p om = YouT= Vo Voc = 5V 725 825 Shutdown Supply Current SHDN > 0.8V, Veo = 2.7V 25 40 WA per Amplifier MAXA1 23/MAX4125/MAX4127 Veco = 5YV 40 60 DC ELECTRICAL CHARACTERISTICS (Voc = +2.7V to +6.5V, Vee = OV, Vom = OV, Vout = Vec/2, RL tied to Vec/2, SHDN > 2V (or open), Ta = -40C to +85C, unless otherwise noted.) PARAMETER CONDITIONS MIN TYP MAX | UNITS MAX41 23ESA/MAX41 25ESA +0.75 MAX4122EUK/MAX41 24EUK +3.50 Vom = MAX4123EUA/MAX41 25EUA +4.40 Input Offset Voltage Vee to V, mV EE CC | MAX4126ESA/MAX41 27 ESD/MAX41 28ESA +0.95 MAX41 26EUA/MAX41 28EUA +4.70 MAX4129ESD +4.00 Input Offset Voltage Tempco +2 EMIS Input Bias Current Vem = Vee to Voe +160 nA Input Offset Current Vem = Vee to Vee +18 nA Common-Mode Input VEE - Voc + Vv Voltage Range 0.20 0.20 MAX41 23ESA/MAX41 25ESA 76 (VEE - MAX41 22EUK/MAX41 24EUK 62 _ 0.2V) MAX4123EUA/MAX4125EUA 60 Commen-Mode Rejection Ratio Voom < dB (Voc + MAX4126ESA/MAX41 27ESD/MAX41 28ESA 74 0.2) MAX4126EUA/MAX41 28EUA 58 MAX4129ESD 60 MAAXIMA 3 6cCLYUXVW-cclLVxXVNMAX4122-MAX4129 Single/Dual/Quad, Wide-Bandwidth, Low-Power, Single-Supply Rail-to-Rail 1/0 Op Amps DC ELECTRICAL CHARACTERISTICS (continued) (Voc = +2.7V to +6.5V, Vee = OV, Vom = OV, Vout = Vec/2, RL tied to Voc/2, SHDN = 2V for open), Ta = -40C to +85, unless otherwise noted.) PARAMETER CONDITIONS MIN TYP MAX | UNITS Power-Supply Rejection Ratio Voc = 2.7V to 6.5V 74 dB Off-Leakage Current SHDN < 0.8V, Vout = OV to Voc +12 HA Vout = 0.25V to 2.45V, RL = 100kQ 84 Voc = 2.7V . . VouT = 0.4V to 2.3V, RL = 2500 66 Large-Signal Voltage Gain dB VouT = 0.25V to 4.75V, RL = 100k 86 Voc =5V VouT = 0.4 to 4.6V, RL = 2500 68 MAX4122/ | R, = 100ka Voc - Vou @ MAX41 23/ VoL - VEE 40 MAX41 24/ Ver - V, 300 CC - VOH MAX4125 | RL = 250 Vn) 2V 190 Output Voltage Swing Voc "a mv MAX4126/ | A, = 100ka eo7 *OH s MAX4127/ VoL - VEE 50 MAX4128/ Voc - VoH 350 RL = 2500 MAX4129 L VoL - VEE 250 _ . Low 0.8 SHDN Logic Threshold MAX4123/MAX41 25/MAX4127 High 50 Vv ig ; SHDN Input Current MAX4123/MAXA1 25/MAX4127 +3 HA Operating Supply-Voltage Range 27 6.5 Vv Supply Current per Amplifi Vom = Vout = Vec/2 Veo = 2.7V m7 yA iu urrent per Amplifier = = pply p p CM = VOUT = Vo Voo = BV 350 Shutdown Supply Current SHDN < 0.8V, Voc = 2.7V 50 WA per Amplifier MAX4123/MAXA1 25/MAXA1 27 Voc = 5V 70 AC ELECTRICAL CHARACTERISTICS (Voc = +2.7V to +6.5V, VEE = OV, SHDN = 2V (or open), Ta = +25 , unless otherwise noted.) PARAMETER CONDITIONS MIN TYP MAX | UNITS . . MAX41 22/23/26/27/29 5 Gain-Bandwidth Product MHz MAX41 24/25/28 (Ay > 10) 25 . MAX41 22/23/26/27/29 64 Phase Margin degrees MAX41 24/25/28 (Ay > 10) 60 . . MAX41 22/23/26/27/29 12 Gain Margin dB MAX41 24/25/28 (Ay > 10) 10 . on. . f = 10kHz, VouT = 2Vp-p, Total Harmonic Distortion MAX4122/29/26/27/29 (Ay = 1) 0.003 Yo MAXA1 22/23/26/27/29 2 Slew Rate Vins MAX41 24/25/28 (Av > 10) 10 MAX41 22/23/26/27/29 (Av = 1), V = 2V ste 2.0 Settling Time to 0.01% (Av = 1), Vout P us MAX41 24/25/28 (Ay = 10), Vout = 2V step 1.3 Turn-On Time Voc = OV to 3V step, VouT = Voc/2 1 us 4 MAAXIAASingle/Dual/Quad, Wide-Bandwidth, Low-Power, Single-Supply Rail-to-Rail 1/0 Op Amps AC ELECTRICAL CHARACTERISTICS (continued) (Voc = +2.7V to +6.5V, Vee = OV, SHDN = 2V (or open), Ta = +25 C, unless otherwise noted.) PARAMETER CONDITIONS MIN TYP MAX | UNITS a Veco = 3V. V = Vec/? Enable 1 SHDN Delay MAXa123/28/07 oe? Disable 02 HS Input Gapacitance 3 pF Input Noise Voltage Density f = 1kHz 22 nVWHz Input Noise Current Density f= 1kHz 0.4 pAAAz Amp-Amp Isolation MAX41 26/27/28/29 135 dB Capacitive Load Stability MAXA1 22/23/26/2 7/29 (Ay = 1) 500 oF MAX41 24/25/28 (Ay 2 10) 500 (Voc = +5V, Vee = OV, Vom= Voo/2, Ta = +25C, unless otherwise noted.) MAX4322/26/29 GAIN AND PHASE vs. FREQUENCY > oo = Ss GAIN (cB) Ay=+1000 NOLOAD 108 7 36 0 36 72 -108 144 180 400 1k = 10k 100k 1M 10M 100M FREQUENCY (Hz) MAX4 124/2.5/28 GAIN AND PHASE vs. FREQUENCY 60 180 14d Ay=+1000 40 TF NoLoap 108 7 20 36 0 0 -36 72 20 -108 144 -40 fae} S 100 ik 10k FREQUENCY (Hz) 100k 1M 10M MA AXIAA PHASE (DEGREES) PHASE (DEGREES) GAIN (dB) ~40 MAX4122/23/26/27/29 GAIN AND PHASE vs. FREQUENCY (WITH CLoap) Ay= +1000 AL=e G, =500pF 100 1k = 10k = 100k = IM FREQUENCY (Ha) 10M MAX4124/25/28 GAIN AND PHASE vs. FREQUENCY (WITH CLaap) oo & 60 ay Ay=41000 RL= oo 1 = 500 pF aos oO o 8 PHAGE (DEGREES) do a 72 108 -180 100M 1M FREQUENCY {Hz} 100 1k 10k = 100k 10M PSA (AB) PSR (dB) 10 10 Typical Operating Characteristics MAX4122/23/26/2 7/29 PCWER-SUPPLY REJECTION vs. FREQUENG 100 tk 10k 100k FREQUENGY (Hz) MAX41 24/2 5/2 f iM 8 MARd122/29-03 1OM 100M POWER-SUPPLY REJECTION vs. FREQUENCY Ay=+10 700 tk 10k 100k FREQUENCY (Hz) 1M MARA122/29-06 10M 100M 6cCLYUXVW-cclLVxXVNMAX4122-MAX4129 Single/Dual/Quad, Wide-Bandwidth, Low-Power, Single-Supply Rail-to-Rail 1/0 Op Amps CHANNEL SEPARATION (cB) SUPPLY CURRENT (1A) VOLTAGE(mV) MAX4126/27/28/29 CHANNEL SEPARATICN vs. FREQUENCY MARA122129-07 100 ik 10k = 100k = Ms 10M FREQUENCY (Hz) SUPPLY CURRENT PER AMPLIFIER vs. TEMPERATURE MARE 122129-10 40 25 10 5 20 35 50 65 80 $5 TEMPERATURE (C) INPUT OFFSET VOLTAGE vs. TEMPERATURE S0T23-5 PACKAGE MARA 122/29-13 SO PACKAGE 40 -25 -10 & 20 35 50 65 80 95 TEM PERATURE (C) OUTPUT IMPEDANCE (2) SHUTDOWN SUPPLY CURRENT (mA) INPUT BIAS CURRENT (nA) Typical Operating Characteristics (continued) (Voc = +5V, VEE = OV, Vom = Voo/2, Ta = +25C, unless otherwise noted.) 100 a o 0.01 40 30 20 100 1k 10k MAX4122/23/26/2 7/29 QUTPUT IMPEDANCE vs. FREQUENCY 100k 1M 10M FREQUENCY {Hz} MAX4323/MAX4327 SHUTDOWN SUPPLY CURRENT vs. TEMPERATURE MARAS22-11 SHON=DV 40 26 -10 5 20 35 5 8S 80 SS TEMPERATURE(*C} INPUT BIAS CURRENT vs. COMM QN-M CDE VCLTAGE MARA 122 /20-14 9] 1 2 3 4 COMMON-MODE VOLTAGE (V} 100M OUTPUT IMPEDANCE (02) LEAKAGECURRENT (1A) INPUT BIAS CURRENT (nA) MAX41 24/25/28 OUTPUT IMPEDANCE vs. FREQUENCY 100 MARA 122/29-08, 0. 100 1k = 10k 100k 1M 10M 100M FREQUENCY (Ha QUTPUT LEAKAGE CURRENT vs. TEMPERATURE #0 Ay=+1 & SHON= a | SHDN= ov ie 16 || aed, Vour SHORT { ceebe 100-7 | | | TO Vig Veo 2V hy Lo fy J an - a - | Your SHORT { Voo= 654 a ms ; T T T lt Vecr2V 4p Ly -40 -25 -10 5 2 35 50 65 80 OF TEMPERATURE (C) INPUT BIAS CURRENT vs. TEMPERATURE 0 % a 40 a =6.5, Vom=Voo TE 30 3 oo | Vec=2.7V, Vom = Veo 10 0 -10 -20 Voc =2.7V, Vow = Vie -30 -40 -60 Voc = 5.5V, Vem = VEE -60 40 -- -10 5 20 35 0 6S 8 95 TEMPERATURE(C} MA AXIAASingle/Dual/Quad, Wide-Bandwidth, Low-Power, Single-Supply Rail-to-Rail 1/0 Op Amps Typical Operating Characteristics (continued) (Voc = +5V, VEE = OV, Vom= Voo/2, Ta = +25, unless otherwise noted.) COMMON-MODE REJECTICN vs. TEMPERATURE Vem = OV TOS.OV Vem =O. TOS.V COMMON-MODE REJEGTION (cB) Vom =0.3 TO5.3 40-25 -10 5 20 35 50 65 80 95 TEMPERATURE (C} LARGE-SIGNAL GAIN vs. QUTPUT VOLTAGE Weg=2.7 ALTO Vee RL = 100k GAIN (dB) 8 100 200 6300 | 400 S000 OUTPUT VOLTAGE EITHER SUPPLY (my) LARGE-SIGNAL GAIN vs. QUTPUT VOLTAGE Voco=2.7V AL TOVes AL = 100k A= 10k AL = 2k. GAIN (0B) A = 8000. Q joo 200 6300400 S00 BOD OUTPUT VOLTAGE EITHER SUPPLY {mv} MA AXIAA Vour - Vee(m) GAIN (dB) GAIN (cB) MINIMUM QUTPUT VOLTAGE vs. TEMPERATURE MAXIMUM OUTPUT VOLTAGE vs. TEMPERATURE 260 . Fi, TOVee | A TOV: | wi 200 Voc =85V, A. = 5000. om 3 Voc = 6.54, Ry = 000 160 aT = Voo=2.7, F000 = Veo =27V, Ry = 5000 100 8 Lan 50 Veg = 8.5V, Py = 180k0 Veo=8.5, A =1 00k (TOR) pa} r Veo =2.7, AL = 100k0. (BOTTOM) Veo=2.7V, AL = 100k 40 -26 -10 5 #0 35 50 66 TEM PERATURE (C) 80 95 40 -25 -10 5 20 95 50 65 80 95 TEM PERATURE (C} LARGE-SIGNAL GAIN vs. TEMPERATURE LARGE-SIGNAL GAIN vs. QUTPUT VOLTAGE 14 Veo =6.5 R TOV 3 tact Voc: 1 toon nen tip | AOE : cuTiP-P} = Vec - ALTO Veg = 100k. Ae Weo= 2, 109 AL = 10k A TOVe | Ka ii =! zs 9 ft Zz & a6 Veco =5.6, AL TO Vee 70 Veo =27, ALTO Voc 60 0 100 200 300 400 S00 400 40-25 10 5 20 35 50 66 80 95 QUTPUT VOLTAGE EITHER SUPPLY (mv) TEMPERATURE(C} LARGE- SIGNAL GAIN LARGE- SIGNAL GAIN vs. OUTPUT VCLTAGE vs. TEMPERATURE a a Veo =6.5V A = 100K & Veo = 8.5, AL TO Vee & R_TOVec x 5 A= 10ke2 3 Voc=8.5, ALTO Vee 13 AL= 2k a 2 Voo=27, A TO Vez A. = 50022 & Veo =2.7V, ALTO Vce VouT(p-P} = Yeo - 800mv A = 100k o 6100 200 69300 400 500 400 40-25 -10 5 #0 35 50 66 80 95 OUTPUT VOLTAGE EITHER SUPPLY (mV) TEM PERATURE (C) 7 6cCLYUXVW-cclLVxXVNMAX4122-MAX4129 Single/Dual/Quad, Wide-Bandwidth, Low-Power, Single-Supply Rail-to-Rail 1/0 Op Amps (Voc = +5V, VEE = OV, Vom= Voo/2, Ta = +25, unless otherwise noted.) MAX4123 MINIMUM CPERATING VOLTAGE vs. TEMPERATURE MAX4122/23/26/27/29 TOTAL HARMONIC DISTORTION AND NOISE vs. FREQUENCY Typical Operating Characteristics (continued) MAX4123 TOTAL HARM NIC DISTORTION AND NOISE vs. PEAK-TO-PEAK SIGNAL AMPLITUDE 04 0.040 5 Ay=+1 = g = 0.085 | 2,.p SIGNAL A Oe 3 lu = 0.080, f SOCK LOWPASS FILTER S00kH2 LONPASS BLTER : vs RL = 10kO TO Vee/2 = 0.025 = 3 WW = = = E 2 o.oo = 0.0 ui ot a 5 ons r = mE OI = 0.010 = Ry = 100k 0.005 ; 0 0.001 40-25 -10 5 20 35 50 65 80 95 10 400 ik 10k 100k 40 42 44 46 48 5.0 TEM PERATURE(C) FREQUENCY (Hz} PEAK-TO-PEAK SIGNAL AMPLITUDE (V) MAX4122/23/26/27/29 MAXK4122/23/26/97/29 MAX4122/23/26/27/29 SMALL-SIGNAL TRANSIENT SMALL-SIGNAL TRANSIENT LARGE-SIGNAL TRANSIENT RESPONSE (NONINVERTING) RESPONSE (INVERTING) RESPONSE (NONINVERTING) Ay=41 : : Ay=-1 oS t Aye | IN ' L pope = | = IN < IN | E z SF = = : g : 2 / \ : / i our \ og \ QUT our | / ot \ moe pene \ ed ! et a co reseed TIME (208ns/ iv) TIME (200ns/aiv) TIME (euus/div} MAX41 22/2 3/26/27/29 MAX4124/25/28 MAX4124/25/28 LARGE-SIGNAL TRANSIENT SM ALL-SIGNAL TRANSIENT SM ALL-SIGNAL TRANSIENT RESPONSE (INVERTING) RESPONSE (NCNINVERTING) RESPONSE (INVERTING) Tore om rr 5 OO s : Ay=-1 i if AyD te eee 3 | : : | i ia i No IN rn ae IN | (edly) | Smiviolv) | poi tee (Envidivy F | _. : foe ey freed stern sehr perenne 4 Ieee Bede see ad poy TN oa om 4 iN / \ 7 ff \ \ oof: \o ef orf oT} | i = Ot \ payee | evidy \. (cOmWaly) ra Ve sy we (somWaiv) VT! : \ TIME (2s/alv) TIME (200ns/div) TIME (200ns/div) 8 MAAXLAASingle/Dual/Quad, Wide-Bandwidth, Low-Power, Single-Supply Rail-to-Rail 1/0 Op Amps (Voc = +5V, VEE = OV, Vom= Voo/2, Ta = +25, unless otherwise noted.) MAX4124/2 5/28 LARGE-SIGNAL TRANSIENT RESPONSE (NONINVERTING) IN | ; , (200mvvoly} Ay=at0 : MANA 12229-33 Typical Operating Characteristics (continued) MAX4124/25/28 LARGE-SIGNAL TRANSIENT Ay=-10 ' (200mVidi} [ | . RESPONSE (INVERTING) MAYA 122129-35 Pier elena ee Pt cn ae ih our |: [ our | \ - , -| (eral) | eway! | A | TNE ust) | TIME(2usaiv) Pin Description PIN MAx4122 | MAX4123 | MAX4126 | wayaior | maxaize NAME FUNCTION MAX4124 | MAX4125 | MAX4128 1 6 _ _ QUT Output 2 4 4 4 14 VEE sooation Ground for single-supply 3 3 _ _ _ IN+ Noninverting Input 4 2 _ _ _ IN- Inverting Input 5 7 8 14 4 Vcc Positive Supply 1,5 5, 7, 8, 10 N.C. No Connect _ 8 _ _ _ SHDN onbie analtien high or leave floating _ 1,7 1,13 1,7 GUT1, OUT2 | COutputs for Amps 1 and 2 _ _ 2,6 2,12 2,6 IN1-, IN2- Inverting Inputs for Amps 1 and 2 _ _ 3,5 3,11 3,5 IN1+, IN2+ Noninverting Inputs for Amps 1 and 2 _ _ _ 6 9 _ SHDNi, Shutdown Control for Amps 1 and 2. Tie , SHDN2 high or leave floating to enable amplifier. 8, 14 OUT3, OUT4 | Outputs for Amps 3 and 4 _ 9,13 IN3-, IN4- Inverting Inputs for Amps 3 and 4 _ 10, 12 IN3+, IN4+ Noninverting Inputs for Amps 3 and 4 MA AXIAA 6cCLYUXVW-cclLVxXVNMAX4122-MAX4129 Single/Dual/Quad, Wide-Bandwidth, Low-Power, Single-Supply Rail-to-Rail 1/0 Op Amps MAAXLAN MAAXIAA [> AAA MAX4122- MAX4 122- Fa MAX4129 tL . Fa . MAX4129 _ ~ i- P3=At || Fe , R3=At || Fe , cow NW lw WV = Rt Re Rt Re Figure ta. Reducing Offset Error Due to Bias Current Figure 1b. Reducing Offset Error Due to Bias Current (Noninverting) (inverting) Figure 2. input Protection Circuit 10 MAAXIAASingle/Dual/Quad, Wide-Bandwidth, Low-Power, Single-Supply Rail-to-Rail 1/0 Op Amps Applications Information Rail-to-Rail Input Stage Devices in the MAX4122-MA%X4129 family of high- speed amplifiers have rail-to-rail input and output stages designed for low-voltage single-supply opera- tion. The input stage consists of separate NPN and PNP differential stages, which combine to provide an input common-mode range extending 0.2V beyond the supply rails. Tne PNP stage is active for input voltages close to the negative rail, and the NPN stage is active for input voltages near the positive rail. The input offset voltage is typically below 200)V. The switchover transi- tion region, which occurs near Vcc/2, has been extended to minimize the slight degradation in CMRR caused by the mismatch of the input pairs. Their low offset voltage, high bandwidth, and rail-to-rail common- mode range make these op amps excellent choices for precision low-voltage data-acquisition systems. Since the input stage switches between the NPN and PNP pairs, the input bias current changes polarity as the input voltage passes through the transition region. To reduce the offset error caused by input bias cur- rents flowing through external source impedances, match the effective impedance seen by each input (Figures 1a, 1b}. High source impedances, together with the input capacitance, can create a parasitic pole that produces an underdamped signal response. Reducing the input impedance or placing a small (2pF to 10pF) capacitor across the feedback resistor improves the response. The MAX4122-MAX4129s inputs are protected from large differential input voltages by 1kQ series resistors and back-to-back triple diodes across the inputs (Figure 2). For differential input voltages less than 1.8V the input resistance is typically S00kQ. For differential input voltages greater than 1.8V the input resistance is approximately 2kQ, and the input bias current is determined by the following equation: VbIFF -_1.8V IBIAS OKO Rail-to-Raii Output Stage The minimum output voltage will be within millivolts of ground for single-supply operation where the load is referenced to ground (VEE). Figure 3 shows the input voltage range and output voltage swing of a MAX4123 connected as a voltage follower. With a +3V supply and the load tied to ground, the output swings from MA AXIAA VOLTAGE (1V/div) TIME (2us/div) Figure 3. Rail-to-Rail Input /Ouiput Voliage Range 10,000 CAPACITIVELOAD (pF) RTOVE Vout =Vec/2 100 100 ik 10k 100k RESISTIVE LOAD (22) Figure 4. Capacitive-Load Stability 0.00V to 2.90V. The maximum output voltage swing depends on the load, but will be within 150mV of a +3V supply, even with the maximum load (600 to ground). Driving a capacitive load can cause instability in most high-speed op amps, especially those with low quiescent current. The MAX4122-MAX41 29 have a high tolerance for capacitive loads. They are stable with capacitive loads up to 500pF. Figure 4 gives the stable operating region for capacitive loads. Figures 5-8 show the response with capacitive loads, and the results of adding an isolation resistor in series with the output (Figure 9). The resistor improves the circuit's phase margin by iso- lating the load capacitor from the op amps output. 11 6cCLYUXVW-cclLVxXVNMAX4122-MAX4129 Single/Dual/Quad, Wide-Bandwidth, Low-Power, Single-Supply Rail-to-Rail 1/0 Op Amps VOLTAGE (50m V/div} TIME (400ns/div} Ay=+10 C_ = 500pF _- IN| .: (5m Vidiv) VOLTAGE OUT (50m Waiv) TIME f1usidiv) Figure 5. MAX4122/23/26/27/29 Small-Signal Transient Response with Capacitive Load Figure 6. MAX4124/25/28 Smaill-Signal Transient Response with Capacitive Load Ay =+1 to. C_ = 1000pF i Rg=3992/) Pe VOLTAGE (50m Vidiv) OUT LL. . TIME (400ns/div) Ay =+10 CL = 1000pF Rg = 669 [~ a: IN on ee nee (5m Vidiv) . : : : : q . . Lint HH f+ ary VOLTAGE out | (50m Vidiv) TIME (t1s/div) Figure 7. MAX4122/23/26/27/29 Transient Response io Capacitive Load with Isolation Resistor Figure 8. MAX4124/25/28 Transient Response to Capacitive Load with Isolation Hesistor Ps T DS ov TO27V OV TO27V 10k Ln SUPPLY-CURRENT = = MONITORING POINT = Figure 9. Capacitive-Load-Driving Circuit 12 Figure 10. Power-Up/Shuidown Test Circuit MAAXIAASingle/Dual/Quad, Wide-Bandwidth, Low-Power, Single-Supply Rail-to-Rail 1/0 Op Amps ot Veco a \ = | 4 = f PN 5 i g ; Poo, omen OUT Mo \ 4 TIME (Sus/div) Upon, : coe Vec nm fo , (1Vidiv) i c t \ Pedant = 1b | |p Pi CHET Li thpbiebetene ferent, : lec J ON (500,A/div) | awe pe wea TIME (Sus/aiv) Figure 17. Power-Up Output Voltage Figure 12. Power-Up Supply Current Veo =2.7V R= 10k SHDN (div) epimers a our eA (0.5Vidiv) weet Soy TIME (2us/div) Vec=27V I . SHDN : (1Wdiv) - wl ee conte TIME (2us/div) Figure 13. Shutdown Output Voltage Power-Up and Shutdown Mode The MAX4122-MAX4129 amplifiers typically settle with- in 1ys after power-up. Using the test circuit of Figure 10, Figures 11 and 12 show the output voltage and supply current on power-up. The MAX4123, MAX4125, and MAX4127 have a shut down option. When the shutdown pin (SHDN) is pulled low, the supply current drops below 25uA per amplifier and the amplifiers are disabled with the outputs in a high-impedance state. Pulling SHDN high or leaving it floating enables the amplifier. In the dual-amplifier MAX4129, the shutdown functions operate indepen- dently. Figures 13 and 14 show the output voltage and supply current responses of the MAX4123 to a shut down pulse. Figure 14. Shutdown Enable/Disable Suppiy Current Power Supplies and Layout The MAX4122-MAX4129 operate from a single +2.7V to +6.5V power supply, or from dual supplies of +1.35V to +3.25V. For single-supply operation, bypass the power supply with a 0.1uF ceramic capacitor in parallel with at least 1pF. For dual supplies, bypass each sup- ply to ground, Good layout improves performance by decreasing the amount of stray capacitance at the op amps inputs and outputs. To decrease stray capacitance, minimize trace lengths and resistor leads by placing external compcnents close to the op amps pins. 13 MA AXIAA 6cCLYUXVW-cclLVxXVNMAX4122-MAX4129 Single/Dual/Quad, Wide-Bandwidth, Low-Power, Single-Supply Rail-to-Rail 1/0 Op Amps Pin Configurations TOP VIEW . ne [a | SHON IN1- [2] MM Fl Voc nif) 4425 Ton VE [4] 5] NC. SO/MAX ouTt [7] . ha] Veo int- [2 | 3] oure N+E3] Apaxaaa [12] N Ve[4] maxsz27 [1] in Ne. [5 Ho] Nec. ami [a re | SHON NC 7 8 | NC. 1 @] our [1] ve [2| IN+ | 3 MA AXLAA MAX4122 MAX4124 SOT23-5 oun! [1 a] Voc wel] pat Fae ints [Bp 4128 Te] ine ve [4] 5] ine SO/MAX anf] 14] OUT4 nt [2] 13] IN4- N+ D3] Anaxaa [2] Voc [a] maxai29 Tit] Vie In2+ [5 | ro] INS inz- [| [9 | INs- out [7 | 8 | Ours so 14 MAAXIAASingle/Dual/Quad, Wide-Bandwidth, Low-Power, Single-Supply Rail-to-Rail 1/0 Op Amps _Ordering Information (continued) PART TEMP. RANGE PIN- PACKAGE MARKING INFO. MAX41 24EUK -40C to +85 C 5 S0T23-5 AABA MAX4125ESA -40C to +85 C 8 SO MAX4125EUA -40S to +85 C 8 wMAX MAX4126ESA -40S to +85C 8 SO MAX4126EUA -40G to +85C 8 MAX MAX4127C/D 0% to +70C Dice* MAX4127ESD -40S to +85C 1480 MAX4128ESA -40S to +85 C 8 SO MAX4128EUA -40S to +85 C 8 uMAX MAX4129ESD -40C to +85 C 1480 Dice are specified at Ta = +25, DC parameters only. MAX4123/ MAX4125 OuUT1 IN1- iN+ 55" 7mm) IN 1+ VEE VEE MAX4127/ MAX4128 Veco 0.0 IN2- IN2+ 0.036" (0.914mm) 0.053" TRANSISTOR COUNT: 170 SUBSTRATE CONNECTED TO VEE MA AXIAA (1.346mm) TRANSISTOR COUNT: 340 SUBSTRATE CONNECTED TO VEE Chip Topographies 66" (1.676mm) 15 6cCLYUXVW-cclLVxXVNSingle/Dual/Quad, Wide-Bandwidth, Low-Power, Single-Supply Rail-to-Rail 1/0 Op Amps Package Information MAX4122-MAX4129 SOTSL EPS. 7o m55 Lo FEF : i I . MOTE: . L J] ALL DIMEMZIOW? APE IM MILLIMETEP:. 2, FOOT LENGTH MEAZUPED AT INTEPCEPT POINT BETWEEN t t DATUM A? LEAD URFACE. A Ac 3. PACKAGE OUTLINE ExCLUZIVE OF MOLD FLATH METAL | | | BUPP. { t 4, PACE AGE OUTLINE INCLUZIVE OF 2OLUDEF PLATING, at MAXIMA PROPPEETART [HF OPMATICN TITLE PACKAGE OUTLINE. cOTe3, 5 APPROVAL DOCUMENT CONTROL Ho Fev l 21-0057 Ey] 1 Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 16 Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 1997 Maxim Integrated Products Printed USA MAXIMA js a registered trademark of Maxim Integrated Products.