MAX4291/MAX4292/MAX4294 19-1612 Rev 3 4/02 Ultra-Small, 1.8V, Power, Rail-to-Rail I/O Op Amps General Description Features The MAX4291/MAX4292/MAX4294 family of micropow- Ultra-Low Voltage OperationGuaranteed Down er operational amplifiers operates from a 1.8V to 5.5V to 1.8V single supply or 0.9V to 2.75V dual supplies and has 100A Supply Current per Amplifier Rail-to-Rail input/output capabilities. These amplifiers provide a 500kHz gain-bandwidth product and 120dB 500kHz Gain-Bandwidth Product open-loop voltage gain while using only 100A of sup- 120dB Open-Loop Voltage Gain (R = 100k ) L ply current per amplifier. The combination of low input offset voltage (200V) and high open-loop gain makes 0.017% Total Harmonic Distortion Plus Noise them ideal for low-power/low-voltage, high-precision (THD + N) at 1kHz portable applications. Rail-to-Rail Input Common-Mode Range The MAX4291/MAX4292/MAX4294 have an input com- mon-mode range that extends to each supply rail, and Rail-to-Rail Output Drives 2k Load their outputs swing to within 46mV of the rails with a 2k No Phase Reversal for Overdriven Inputs load. Although the minimum operating voltage is speci- fied at 1.8V, these devices typically operate down to Unity-Gain Stable for Capacitive Loads up to 100pF 1.5V. The combination of ultra-low-voltage operation, rail- 200V Input Offset Voltage (MAX4292/MAX4294) to-rail inputs/output, and low-power consumption makes these devices ideal for any portable/two-cell battery-pow- Single in Small 5-Pin SC70 ered system. Available in Ultra-Small Packages: The single MAX4291 is offered in an ultra-small 5-pin 5-Pin SC70 (MAX4291) SC70 package. The dual MAX4292 is offered in a space-saving 8-bump, 1.5mm X 1.5mm footprint, ultra 8-Bump UCSP (MAX4292) chip-scale package (UCSP). Ordering Information Applications PIN- TOP 2-Cell Battery-Operated Systems PART TEMP RANGE PACKAGE MARK Portable Electronic Equipment 5 SC70-5 AAD MAX4291EXK-T -40C to +85C Battery-Powered Instrumentation 5 SOT23-5 ADML MAX4291EUK-T -40 C to +85C Digital Scales 8 UCSP-8 AAJ MAX4292EBL-T* -40 C to +85C Strain Gauges MAX4292EUA -40 C to +85C 8 MAX 8 SO MAX4292ESA -40C to +85C Sensor Amplifiers 14 SO MAX4294ESD -40 C to +85C Cellular Phones MAX4294EUD -40 C to +85C 14 TSSOP Pin Configurations *UCSP reliability is integrally linked to the users assembly methods, circuit board material, and environment. Refer to the TOP VIEW UCSP Reliability Notice in the UCSP Reliability section of this (BUMPS ON BOTTOM) data sheet for more information. OUTA V OUTB CC Selector Guide INA- MAX4292 INB- PART AMPLIFIERS PIN-PACKAGE 5-pin SC70/SOT23 MAX4291 1 INA+ V INB+ EE 8-pin MAX/SO/UCSP MAX4292 2 MAX4294 4 14-pin SO/TSSOP UCSP Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd. Pin Configurations continued at end of data sheet. UCSP is a trademark of Maxim Integrated Products, Inc. Maxim Integrated Products 1 For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct at 1-888-629-4642, or visit Maxims website at www.maxim-ic.com.Ultra-Small, 1.8V, Power, Rail-to-Rail I/O Op Amps ABSOLUTE MAXIMUM RATINGS Supply Voltage (V to V ....................................................6V 8-Pin MAX (derate 4.10mW/C above +70C)..............330mW CC EE) All Other Pins ...................................(V + 0.3V) to (V - 0.3V) 8-Pin SO (derate 5.88mW/C above +70C) ..................471mW CC EE Current into IN +, IN - .....................................................25mA 14-Pin SO (derate 8.33mW/C above +70C) ................667mW Output Short-Circuit Duration.....................................Continuous 14-Pin TSSOP (derate 6.3mW/C above +70C)............500mW Continuous Power Dissipation (T = +70C) Operating Temperature Range............................-40C to +85C A 5-Pin SC70 (derate 2.5mW/C above +70C) ................200mW Junction Temperature ......................................................+150C 5-Pin SOT23 (derate 7.1mW/C above +70C)................571mW Storage Temperature Range .............................-65C to +150C 8-Bump UCSP (derate 4.7mW/C above +70C)...........379mW Lead Temperature (soldering, 10s) .................................+300C 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 may affect device reliability. ELECTRICAL CHARACTERISTICS (V = 1.8V to 5.5V, V = V = 0, V = V /2, R = 100k connected to V /2, T = +25C, unless otherwise noted.) CC EE CM OUT CC L CC A (Note 1) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Supply Voltage Range V Inferred from PSRR test 1.8 5.5 V CC V = 1.8V 100 210 Quiescent Supply Current CC I A Q (Per Amplifier) V = 5.0V 100 255 CC MAX4291 400 2500 Input Offset Voltage V V OS MAX4292/MAX4294 200 1200 Input Bias Current I V = 5.0V, 0 V 5.0V 15 60 nA B CC CM Input Offset Current I V = 5.0V, 0 V 5.0V 1 7 nA OS CC CM Differential Input Resistance R V - V < 10mV 0.75 M IN IN+ IN- Input Common-Mode Voltage V Inferred from CMRR test 0V V CM CC Range Tested for MAX4291 50 80 0 V CM dB 1.8V MAX4292/MAX4294 57 80 V = 1.8V CC Common-Mode Rejection Ratio CMRR Tested for MAX4291 60 90 0 V CM Common-Mode Rejection Ratio dB 5.0V, MAX4292/MAX4294 66 90 V = 5.0V CC Power-Supply Rejection Ratio PSRR 77 100 dB 2 MAX4291/MAX4292/MAX4294