MAXIM MAX4236/MAX4237 handbook
Contents
1. 120 amp 8 5 10 E 80 amp 60 lu cy 40 Ca gt 20 c 001 01 1 10 100 1000 10 000 FREQUENCY kHz MAX4237 OPEN LOOP GAIN PHASE vs FREQUENCY 4236 toc09 10 140 Jh HASE 100 m GA 80 60 ec z e 5 9 40 40 Vec 5V 3V 20 CL 15pF 200pF 20 0 20 0 0 001 0 01 0 1 1 10 100 1000 10 000 100 000 FREQUENCY kHz TOTAL HARMONIC DISTORTION PLUS NOISE vs FREQUENCY Vour 2Vp p 8 4 5 o 0 01 z ca 15 0001 0 0001 10 0 1 k 100k FREQUENCY Hz 7 MAX4236 MAX4237 SOT23 Very High Precision 3V 5V Rail To Rail Op Amps Typical Operating Characteristics continued Vcc Vee 0 Vom 2 RL 100kQ to Vcc 2 TA 25 C unless oth MAX4236 toc15 MAX4236 toc18 MAX4236 toc21 erwise noted SUPPLY CURRENT vs TEMPERATURE SUPPL2. 1 1 BOTTOM VIEW D TOP VIEW e Al A i Ne EE MS e k L SIDE VIEW FRONT VIEW vy NOTES 1 D amp E DO NOT INCLUDE MOLD FLASH PROPRIETARY INFORMATION 2 MOLD FLASH OR PROTRUSIONS NOT TO EXCEED 0 15MM 006 me 3 CONTROLLING DIMENSION MILLIMETERS PACKAGE OUTLINE 8L uMAX 4 MEETS MO 187 APPROVAL CONTROL NT REV 21 0036 11 Ae MAX4236 MAX4237 SOT23 Very High Precision 3V 5V Rail To Rail Op Amps Package Information continued g LH uA V 4 5 MILLIMETERS INCHES MILLIMETERS MIN MAX MIN MAX MIN AX MIN AX IN M012 0 053 0 069 1 35 1 795 0 1189 0197 4 80 5 00 8 510 004 0010 010 0 25 0 337 0 344 855 8 5 14 B 0 014 0 019 0 35 0 49 0 386 0 394 98011000116 0 007 0 010 019 0 25 0 050 H DTES E10150 10 157 3 80 4 00 1 D amp E DO NOT INCLUDE MOLD FLASH 0 22
3. 140 140 8 amp Voc 3V 2 om 5 g 120 5 120 5 gt z 100 amp 100 o 5 80 S 80 B 60 60 z 40 40 gt 3 20 S 20 0 0 0 05 10 15 20 25 30 0 1 2 3 4 5 COMMON MODE INPUT VOLTAGE V COMMON MODE INPUT VOLTAGE V COMMON MODE REJECTION RATIO POWER SUPPLY REJECTION RATIO vs FREQUENCY Vcc 3V vs FREQUENCY Vcc 5V 14 5 12 8 0 i 5 E 10 u amp 10 8 908 S Ei M N wg 4 4 amp 4 8 2 2 0001 01 4 0 0 1000 10 000 0 1 1 10 0 1 0 000 FREQUENCY kHz FREQUENCY kHz MAX4236 OPEN LOOP GAIN PHASE INPUT VOLTAGE NOISE vs FREQUENCY FREQUENCY isos 14 PHASE 3 12 80 20 10 i _ GAIN 8 60 5 15 6 ea ES lt lu 4 2 8 Vcc 5V 3V 5 2 15pF 200pF 20 zu E 0 0 0 001 0 01 04 1 10 100 1000 10 000 0 01 01 1 100 FREQUENCY kHz FREQUENCY kHz AVLAXLA COMMON MODE REJECTION RATIO vs FREQUENCY Vcc 5V
4. 1 ALL DIMENSIONS ARE IN MILLIMETERS d FOOT LENGTH MEASURED AT INTERCEPT POINT BETWEEN s D DATUM A amp LEAD SURFACE 3 PACKAGE DUTLINE EXCLUSIVE OF MOLD FLASH amp METAL BURR 4 PACKAGE DUTLINE INCLUSIVE DF SULDER PLATING 5 PIN 1 IS LUWER LEFT PIN VHEN READING MARK FROM LEFT TU RIGHT SEE EXAMPLE MARIO 6 PIN 1 LD DOT IS 0 3 MM MIN LOCATED ABOVE E PIN 1 AVI IV PROPRIETARY INFORMATION PACKAGE DUTLINE SOT23 6L APPROVAL DOCURENT CONTROL NO RV 5 21 0058 DIA o a SER N JEDEC E g 8 INCHES MILLIMETERS INCHES MILLIMETERS 3 MIN MAX MIN MAX MIN MAX MIN MAX A 0 037 0 043 0 94 140 Se 0 043 110 1 0002 0 006 0 05 0 15 0 002 0 006 0 05 015 0 010 0014 oes 036 0010 0016 025 0 40 c 0 005 0007 013 018 0005 0009 013 023 D oie 0120 e95 305 0114 oiee 29 31 H e 00256 BSC 0 65 BSC 00256 BSC 0 64 BSC 90 50 0 01 E one 295 305 014 oiee 29 34 Ed 0 88 0198 478 5 03 0 193 BSC 4 9 BSC 0 50 L 0 016 0 026 0 41 066 0016 0027 040 070 a 0 6 0 6 0 6 0 6 S 00207 BSC 0 5250 BSC
5. Vom VcC 2 RL 100kQ to Vcc 2 TA 25 C unless otherwise noted OUTPUT SINK CURRENT OUTPUT SINK CURRENT SHORT CIRCUIT CURRENT vs OUTPUT VOLTAGE vs OUTPUT VOLTAGE vs TEMPERATURE 80 g 60 20 5 Vec 25V 8 Voc 8 7 OUTPUT TO GND JZ OUTPUTTOGND 8 _ 50 1 E 6 15 4 50 m 2 e 40 o3 10 RU 5 3 eo a 5 20 a p amp m 5 5 10 SHORTED TO Vee SOURCING CURRENT 0 0 0 0 05 10 15 20 25 30 35 40 45 50 0 05 10 15 20 25 30 50 25 0 25 50 75 100 125 OUTPUT VOLTAGE V OUTPUT VOLTAGE V TEMPERATURE C SHORT CIRCUIT CURRENT DC 1 0 TRANSFER CURVE DC 1 0 TRANSFER CURVE vs TEMPERATURE RLoAp 100 0 1 25 25 40 8 8 8 2 0 8 2 0 E 5 E i 15 15 10 10 amp 25 05 Z 05 E 20 S 0 p z amp 05 x 05 5 15 40 40 S 10 5 15 15 SHORTED TO Voc 5 SINKING CURREN 22 2 0 0 25 25 50 25 0 2 50 75 100 125 100 50 50 100 100 50 0 50 100 TEMPERATURE DIFFERENTIAL INPUT VOLTAGE uV DIFFERENTIAL INPUT VOLTAGE uV MAX4236 MAX4237 NONINVERTING SMALL SIGNAL RESPONSE NONINVERTING SMALL SIGNAL RESPONSE MAX4236 10 28 M
6. Beyond this range the amplifier output is a nonlinear function of the input but does not undergo phase reversal or latch up see Typical Operating Characteristics o Connection Not internally connected The output swings to within 150mV of the power supply rails with a 1kQ load The input ground sensing and the rail to rail output substantially increase the dynamic range Power Up and Shutdown Mode The 4236 4237 have a shutdown option When the shutdown pin SHDN is pulled low the sup ply current drops to and the amplifiers are dis abled with the output in a high impedance state Pulling SHDN high enables the amplifiers The turn on time for the amplifiers to come out of shutdown is 4us Applications Information As described above the characteristics of the 4236 4237 are excellent for high precision accuracy circuitry and the high impedance low cur rent low offset and noise specifications are very attractive for piezoelectric transducers applications In these applications the sensors generate an amount of electric charge proportional to the changes in the mechanical stress applied to them These charges are transformed into a voltage proportional to the applied force by injecting them into a capacitance and then amplifying the resulting voltage The voltage is an inverse function of the capacitance into which the charges generated by the transducer sensor are injecte
7. MAXIM 7777 5 ZE cvrXVW 9 cPXVIN MAX4236 MAX4237 SOT23 Very High Precision 3V 5V Rail To Rail Op Amps ELECTRICAL CHARACTERISTICS SOT23 6 continued Vcc 2 4V to 5 5V 0 Vom 0 Vour 2 RL 100kQ to 2 TA to Tmax unless otherwise noted Typical values are at Vcc 5V and TA 25 C Note 1 PARAMETER SYMBOL CONDITIONS f 5kHz 2Vp p 5V RL 10kQ ing Time ts Vour settling to within 0 0196 Harmonic Distortion Capacitance f 2 100kHz Input Voltage Noise Density f 1kHz Input Noise Voltage np p f 0 1Hz to 10Hz Capacitive Load Stability CLOAD No sustained oscillations Shutdown Mode Output Leakage SHDN Logic Low VIL SHDN Input Current SHDN or Vcc Shutdown Delay Time t SH RL 1kQ Device in shutdown mode SHDN lOUT SH Veo Shutdown Recovery Time EN RL 1kQ Note 1 All devices are 100 production tested at Ta 25 C all specifications over temperature are guaranteed by design unless otherwise specified Note 2 Guaranteed by design not production tested Note 3 Maxim specification limits for the temperature coefficient of the offset voltage TCVos are 100 tested for the A grade 8 pin SO and uMAX packages Typical Operating Characteristics Voc 5V VEE 0 Vom 2 RL 100kQ to 2 TA 25 C unless ot
8. 8 0244 5 801620 2 15an coe n10 010 10 020 0 25 0 50 3 LEADS BE COPLANAR WITHIN 102mm C004 0016 0 050 0 40 1 27 4 CONTROLLING DIMENSION MILLIMETER 5 MEETS JEDEC MS012 XX AS SHOWN IN ABOVE TABLE 6 N NUMBER OF PINS PACKAGE FAMILY OUTLINE SOIC 150 7 21 0041 PROPRIETARY INFDRMATIDI DOCUNENT CONTROL NUMBER REV 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 14 Maxim Integrated Products 120 San Gabriel Drive Sunnyvale CA 94086 408 737 7600 2001 Maxim Integrated Products Printed USA MAXIM is a registered trademark of Maxim Integrated Products
9. AX4236 toc29 INPUT INPUT 7 10mV div 10mV div OUTPUT OUTPUT 50mV div 0 10mV div 0 1us div 1us div Voc 2 5V Voc 22 51 Ry 1kQ CL 15pF 1kO CL 15pF Ay VN Ay 5VN 7 3 9 MAX4236 MAX4237 SOT23 Very High Precision 3V 5V Rail To Rail Op Amps Typical Operating Characteristics continued Vcc 5V Vee 0 Vom 2 RL 100kQ to Vcc 2 TA 25 C unless otherwise noted MAX4237 NONINVERTING LARGE SIGNAL RESPONSE MAX4236 toc30 INPUT OUTPUT 1V div 2us div Vcc 2 5V RL 1kO C 15pF 5 MAX4236 NONINVERTING LARGE SIGNAL RESPONSE MAX4236 toc32 INPUT 1V div OUTPUT 1V div 4us div Vec 2 5V Ri 1kQ C 15pF Ay 1VN 10 200mV div MAX4237 NONINVERTING LARGE SIGNAL RESPONSE MAX4236 toc31 INPUT 200mV div OUTPUT 1V div 1us div Vec 2 5V Ri 100kO C 15pF 5VN 4236 NONINVERTING LARGE SIGNAL RESPONSE 4236 10 33 INPUT 1V div OUTPUT 1V div 4us div Vec 2 5V Ri 100kQ Ci 15pF 1VN AVLAZXL AVI SOT23 Very High Precision 3V 5V SO uMAX Amplifier Output Rail To Rail Op Amps Pin Description FUNCTION egative Power Supply Bypass with a 0 1 capacitor to ground Connect to GND or single supply operation oninverting Amplifier Input Inverting Amplifier Input Shutdown Input Do not lea
10. Y CURRENT vs SUPPLY VOLTAGE LARGE SIGNAL GAIN vs TEMPERATURE 40 2 345 z 39 8 140 E 340 The AC 5 5V Ri to Ve E 370 9335 TA 25 C 120 g 85 y 350 S 330 07 gt Ty 125 C amp 100 amp a Vec 3V RL to Vee d 33 255 8 Vcc 32 0 320 310 30 315 60 50 25 0 25 50 15 100 125 25 30 35 40 45 50 55 50 25 0 2 50 75 100 125 TEMPERATURE C SUPPLY VOLTAGE V TEMPERATURE MINIMUM OUTPUT VOLTAGE MAXIMUM OUTPUT VOLTAGE OUTPUT VOLTAGE vs TEMPERATURE vs TEMPERATURE vs SUPPLY VOLTAGE 5 gt NE P I i 4 2 T Vec 5V Rp 1KQ 35 RL oO 5 Vec 8V Ru 1kQ 5 a 25 5 5 E 2 e amp 5 5 5 15 25 Voc 5V 3V Ri 100kQ Voc 5V 3V 100kQ 25 0 2 50 75 100 125 5 25 0 25 50 75 100 15 30 35 40 45 5 0 TEMPERATURE TEMPERATURE C SUPPLY VOLTAGE V OUTPUT VOLTAGE OUTPUT SOURCE CURRENT OUTPUT SOURCE CURRENT vs SUPPLY VOLTAGE vs OUTPUT VOLTAGE vs OUTPUT VOLTAGE 4 12 M 10 Ru 100kQ 8 3 35 1 VoL VEE gl 3 E 8 EC m E 25 e c Sg S 6 5 amp 15 t Vcc RB 4 2 5 4 5 3 2 152 05 1 0 0 30 85 40 45 50 0 05 10 15 20 25 30 35 40 45 50 0 05 10 15 20 25 30 SUPPLY VOLTAGE V OUTPUT VOLTAGE V OUTPUT VOLTAGE V 8 AVLAZCL VI SOT23 Very High Precision 3V 5V Rail To Rail Op Amps Typical Operating Characteristics continued Vcc 5V VEE 0
11. al Design A good layout improves performance by decreasing the amount of parasitic and stray capacitance induc tance and resistance at the amplifier s inputs outputs and power supply connections Since parasitics might be unavoidable minimize trace lengths resistor leads and place external components as close to the pins as possible In high impedance low input current applications input lines guarding and shielding special grounding and other physical design and layout techniques are mandatory if good results are expected The negative effects of crosstalk EMI and other forms of interference and noise thermal acoustic etc must be accounted for and prevented beforehand for good performance in the type of sensitive circuitry in which the MAX4236 MAX4237 are likely to be used 12 Selector Guide MINIMUM STABLE GAIN TOP MARK AAUV 4236 4236 4236 4237 4237 4237 AXA237AE 4237 Chip Information TRANSISTOR COUNTS 224 PROCESS BiCMOS MAALM SOT23 Very High Precision 3V 5V Rail To Rail Op Amps Package Information 6LSOT EPS 0 20 SYMBOL MIN MAX 04 He z A2 0 90 1 30 5 0 35 0 50 SEE NDTE 5 EXAMPLE MARK SEE NOTE 6 PIN 1
12. ay affect device reliability ELECTRICAL CHARACTERISTICS SO 8 and uMAX 8 Vcc 2 4V to 5 5V 0 Vom 0 Vour 2 RL 100kQ to 2 TA to Tmax unless otherwise noted Typical values are at Vcc 5V and TA 25 C Note 1 PARAMETER SYMBOL CONDITIONS Supply Voltage Range Voc Guaranteed by the PSRR test In normal mode 5V tdown mode Quiescent Supply Current In normal mode 38V shutdown mode Vcc 5V 25 Grade A TA to TMAX Voc 5V TA 25 C Grade B TA TMIN to TMAX Input Offset Voltage Input Offset Voltage Temperature Vcc 5V Grade A Coefficient Note 3 Grade B Input Bias Current Note 2 Input Offset Current Note 2 Resistance Differential or common mode Common Mode Voltage Guaranteed by the CMRR test Vcc TA 25 C 84 0 15V lt Vom lt Vcc 1 2V TA TMIN to TMAX 80 Common Mode Rejection Ratio Vcc 3 0V Ta 25 C 82 0 15V lt lt 1 2V TA TMIN to TMAX Vcc 2 4V to TA 25 C 5 5V TA TMIN to TMAX Power Supply Rejection Ratio 2 MAXXI SOT23 Very High Precision 3V 5V Rail To Rail Op Amps ELECTRICAL CHARACTERISTICS 50 8 and 8 continued Vcc 2 4V to 5 5V VEE 0 Vom 0 Vout 2 RL 100kQ to Vcc 2 TA to Tmax unless otherwise noted Typical values ar
13. d This capacitance and the resistance that dis charges it define the low frequency response of the circuit It is desirable once the preferred low frequency response is known to maintain the capacitance as low as possible because the amount of necessary upstream amplification and the signal to noise ratio deterioration is directly proportional to the capacitance value The 4236 4237 high impedance low 11 ZE cPXVW 9 cPXVIN MAX4236 MAX4237 SOT23 Very High Precision 3V 5V Rail To Rail Op Amps current low noise inputs allow a minimum of capaci tance to be used Piezoresistive transducers applications require many of the same qualities For those applications the 4236 4237 high CMRR PSRR and offset sta bility are also a good match A typical application for a piezoresistive transducer instrumentation amplifier design using the MAX4236 MAX4237 is shown in the Typical Application Circuit In general the 4236 4237 are good compo nents for any application in which an amplifier with an almost zero input current is required including high precision long time constant integrators and electro chemical sensors Power Supplies The 4236 4237 can operate from a single 2 4V to 5 5V power supply or from 1 2V to 2 75V power supplies The power supply pin s must be bypassed to ground with a O 1uF capacitor as close to the pin as possible Layout and Physic
14. e at Vcc 5 and TA 25 Note 1 PARAMETER SYMBOL CONDITIONS RL 100 VouT RL 15mV to Vcc 50mV connected to Vcc 2 RL 1kQ VOUT 25 C 0 15V to Vcc 0 3V Voc 5V RL RL 100kQ Vout connected to 15mvV to Vcc 50mV 2 TA TMIN to TMAX 1kQ 0 15V to Vcc 0 3V Large Signal Voltage Gain RL 100k VouT 3V RL 5mvV to Vcc 50mV connected to Vcc 2 1kQ Ta 25 C OUT 0 15V o Vcc 0 3V RL 100k VouT Vcc 3V R PS 15mV to Vcc 50mV connected to 2 RL 1kQ TA TMIN to Vout 0 15V TMAX to Vcc 0 3V Voc 5V RL connected to 2 RL 100kQ VoL VEE Output Voltage Swing Voc 5V RL connected to 2 RL 1kQ VOL VEE Shorted to VEE Shorted to Vcc Output Short Circuit Current Gain Bandwidth Product RL CL 5pF Slew Rate Vcc 5V VouT 4V step VOUT settling to within 0 01 f 5kHz VoUT 2Vp p Vcc 5V RL 10kQ Settling Time Total Harmonic Distortion MAXIM ZE cPXVW 9 cPXVIW MAX4236 MAX4237 SOT23 Very High Precision 3V 5V Rail To Rail Op Amps ELECTRICAL CHARACTERISTICS 50 8 and 8 continued Vcc 2 4V to 5 5V VEE 0 Vem 0 Vout 2 RL 100kQ to Vcc 2 TA to T
15. een Re ao AVLAZXLAI SOT23 Very High Precision 3V 5V Rail to Rail Op Amps General Description Features The MAX4236 MAX4237 are high precision op amps Ultra Low Offset Voltage that feature an exceptionally low offset voltage and off 20uV max at 25 C Grade set voltage temperature coefficient without using any chopper techniques The MAX4236 4237 have SO V max at 25 C Grade 6 SOT23 a typical large signal open loop voltage gain of 120dB Ultra Low Offset Voltage Drift These devices have an ultra low input bias current of 2uV C max Grade A 1pA The 4236 is unity gain stable with a gain 4 5uV C max Grade B 6 SOT23 bandwidth product of 1 7MHz while the 4237 is 5 5 max 6 Pin SOT23 stable for closed loop gains greater than 5V V with a gain bandwidth product of 7 5MHz Both devices have Ultra Low 1pA Input Bias Current a shutdown function in which the quiescent current is High Open Loop Voltage Gain 110dB min reduced to less than O 1uA and the amplifier output is RL 100kQ orced into a high impedance state Compatible with and 45V Sinale S The input common mode range of the 4236 ke guru mt PATIRE MAX4237 extends below the negative supply range and Power Systems he output swings Rail to Rail These features make the Ground Sensing Input Common Mode Range amplifiers ideal for applications with 3V or 5V single I
16. herwise noted Vos DISTRIBUTION TCVos DISTRIBUTION OFFSET VOLTAGE vs TEMPERATURE 4236 toc01 MAX4236 1002 2 e MAX4236 1002 PERCENT OF UNITS 95 PERCENT OF UNITS OFFSET VOLTAGE uV c 0 20 45 10 05 0 05 10 15 20 50 25 0 25 50 75 100 125 TCVos TEMPERATURE C 6 AVLAZXL VI SOT23 Very High Precision 3V 5V Rail To Rail Op Amps COMMON MODE REJECTION RATIO vs COMMON MODE INPUT VOLTAGE Typical Operating Characteristics continued Voc 0 Vom 2 RL 100kQ to Vcc 2 TA 25 unless otherwise noted COMMON MODE REJECTION RATIO vs COMMON MODE INPUT VOLTAGE
17. max unless otherwise noted Typical values are at Vcc 5V and TA 25 C Note 1 PARAMETER SYMBOL CONDITIONS Input Capacitance CIN f 100kHz Input Voltage Noise Density Input Noise Voltage f 1kHz f 0 1Hz to 10Hz Capacitive Load Stability Shutdown Leakage ode Output IOUT SH 4236 No sustained oscillations 4237 Device shutdown mode SHDN Vour 0 to Vcc SHDN Logic Low SHDN Logic High ViL SHDN Input Current Shutdown Delay Time Shutdown Recovery Time SHDN or Vcc RL 1kQ ELECTRICAL CHARACTERISTICS SOT23 6 Voc 2 4V to 5 5V VEE 0 0 Vout Vcc 2 RL 100k to Vcc 2 Tm to T values are at Vcc 5V and Ta 25 C Note 1 PARAMETER SYMBOL CONDITIONS 4 us unless otherwise noted Typical MIN TYP MAX UNITS Supply Voltage Range Vcc Guaranteed by the PSRR test 2 4 Quiescent Supply Current put Offset Voltage In normal mode 5V In shutdown mode In normal mode VCC In shutdown mode TA 25 Voc 4 TA TMIN to TMAX put Offset Voltage Temperature oefficient Note 2 5V put Bias Current Note 2 put Offset Current Resistance Note 2 Differential or common mode Common Mode Voltage Guaranteed by the CMRR test Com
18. mon Mode Rejection Ratio 5V 0 15V TA 25 C Vem lt Vcc 1 2V TMIN to TMAX VCC 3 0V 0 15V TA 25 C Vom Vcc 1 2V TA to TMAX MAXIA SOT23 Very High Precision 3V 5V Rail To Rail Op Amps ELECTRICAL CHARACTERISTICS SOT23 6 continued Vcc 2 4V to 5 5V VEE 0 Vom 0 Vout 2 RL 100kQ to Vcc 2 TA to Tmax unless otherwise noted Typical values are at Vcc 5 and TA 25 Note 1 PARAMETER SYMBOL CONDITIONS Voc 424Vto 25 5 5V Power Supply Rejection Ratio TA TMIN to TMAX RL 100 5V RL VouT 15mvV to connected to Vcc 50mV VcC 2 RL 1kQ TA 25 C VouT 0 15V to Vcc 0 3V Vcc 5V RL 100kQ VOUT connected to 15mV to Vcc 50 2 TA TMIN tO RL 1kQ Vout 0 15V to Vcc 0 3V Large Signal Voltage Gain R Vcc 3V RL VOUT connected to 2 RL TA 25 VOUT Vi OUT R Voc 8V RL V V connected to 2 TMIN to R 5V RL connected to Vcc 2 RL 100kQ Output Voltage Swing Voc 5V RL connected to Vcc 2 RL 1kQ VOL VEE Shorted to VEE Output Short Circuit Current IOUT SC Shorted to Vcc Gain Bandwidth Product GBWP RL 15pF Voc 45V VOUT 4V step Slew Rate SR
19. ncludes Negative Rail power supplies The MAX4236 MAX4237 are specified for he extended temperature range 40 to 85 and Rail to Rail Output Swing into a 1kQ Load are available in tiny SOT23 and SO packages For 350pA Quiescent Current greater accuracy the A grade MAX and SO packages are tested to guarantee 20uV max offset voltage at Gain Bandwidth Product 25 and less then 2uV C drift 1 7MHz MAX4236 1V V 7 5MHz 4237 5V V Applications 200pF Capacitive Load Handling Capability aran mages Shutdown Mode 0 1pA Quiescent Current Piezoelectric Sensors Places Output in a High Impedance State Thermocouple Amplifiers Available in Space Saving SOT23 and MAX Electrochemical Sensors Packages Battery Powered Instrumentation Instrumentation Amplifiers Rail to Rail is a registered trademark of Nippon Motorola Inc _ CO der ing Information PART TEMP RANGE PIN PACKAGE MAX4236EUT T 40 C to 85 C 6 SOT23 6 MAX4236AEUA 8 uMAX 4236 8 MAX4236AESA 850 IN MAXIM MAX4236BESA o 85 C 8 SO maxim MU MAXA237EUT T 40 C to 85 680T23 6 MAX4236 S MAX4237 s 4237 85 8 SO 8 uMAX MAX4237B 4 o 85 C 8 MAX4237AE 4 o 85 C 8 SO MAX4237BE 4 85 C 8 SO Pin Configurations TOP VIEW SOT23 6 MAXIM Maxim Integrated Products 1 For pricing delivery and
20. ordering information please contact Maxim Dallas Direct at 1 888 629 4642 or visit Maxim s website at www maxim ic com ZE cPXVW 9 cPXVIW MAX4236 MAX4237 SOT23 Very High Precision 3V 5V Rail To Rail Op Amps ABSOLUTE MAXIMUM RATINGS Supply Voltage VCC 0 3V to 6V Operating Temperature Range 40 C to 85 C Analog Input Voltage or IN VEE 0 3V to Vcc 0 3V Junction Temperature 150 C Logic Input Voltage SHDN VEE 0 3V to Vcc 0 3V Storage Temperature Range 65 C to 150 CUrtenipte AT VPE s tss cae e e PUR 20mA Lead Temperature soldering 105 300 Output Short Circuit Duration Continuous to Either or Continuous Power Dissipation TA 70 C 6 SOT23 6 derate 8 7mW C above 70 C 696mW 8 UMAX derate 4 5mW C above 70 362mW 8 Pin SO derate 5 9 above 70 471mW Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device These are stress 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 m
21. ve floating Connect to Vcc for normal operation or GND o enter the shutdown mode Positive Supply Input Bypass with a O 1uF capacitor to ground Detailed Description MAX4236 MAX4237 are high precision op amps with a CMOS input stage and an excellent set of DC and AC features The combination of tight maximum voltage offset low offset tempco and very low input current make them ideal for use in high precision DC circuits They feature low voltage operation low power consumption high current drive with rail to rail output swing and high gain bandwidth product High Accuracy The MAX4236 MAX4237 maximum input offset voltage is 20uV 5uV typ for grade A version and 50yV for grade B version at 25 The maximum temperature coefficient of the offset voltage for grade A and B are guaranteed to be 2uV C and 4 5uV C respectively The parts have an input bias current of 1pA Noise characteristics are 14nV VHz and a low frequency noise 0 1Hz to 10Hz of 0 2uVp p The CMRR is 102dB and the PSRR is 120dB The combination is what is necessary for the design of circuits to process signals while keeping high signal to noise ratios as in stages preceding high resolution converters or when they are produced by sensors or transducers generat ing very small outputs Rail to Rail Outputs Ground Sensing Input The input common mode range extends from 0 15V to Vcc 1 2V with excellent common mode rejection
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MAXIM MAX4236/MAX4237 handbook