MAX44250/MAX44251/ 20V, Ultra-Precision, Low-Noise Op Amps MAX44252 General Description Benefits and Features The MAX44250/MAX44251/MAX44252 are 20V, ultra- High Accuracy Enables Precision Signal Chain precision, low-noise, low-drift amplifiers that offer near- Acquisition zero DC offset and drift through the use of patented auto- 6V Input Offset Voltage (max) at Room correlating zeroing techniques. This method constantly Temperature measures and compensates the input offset, eliminating TCV of 19nV/C (max) OS Low 5.9nV/Hz Input-Referred Voltage Noise drift over time and temperature and the effect of 1/f noise. These single, dual, and quad devices feature rail-to-rail 123nV in 0.1Hz to 10Hz P-P 10MHz Gain-Bandwidth Product outputs, operate from a single 2.7V to 20V supply or dual 1.35V to 10V supplies and consume only 1.15mA per Rail-to-Rail Output Fast 400ns Settling Time channel, while providing 5.9nV/Hz input-referred voltage noise. The ICs are unity-gain stable with a gain-bandwidth 2.7V to 20V Power-Supply Range Supports product of 10MHz. Wide Range of Sensors With excellent specifications such as offset voltage of Integrated EMI Filter Reduces Impact of Radio 6V (max), drift of 19nV/C (max), and 123nV noise in P-P Frequency Interference on Signal Chain Performance 0.1Hz to 10Hz, the ICs are ideally suited for applications Applications requiring ultra-low noise and DC precision such as inter- facing with pressure sensors, strain gauges, precision Strain Gauges weight scales, and medical instrumentation. Pressure Transducers The ICs are available in 5-pin SOT23, 8-pin SOT23, 8-pin Medical Instrumentation MAX , and 14-pin SO packages and are rated over the Precision Instrumentation -40C to +125C temperature range. Load Cell and Bridge Transducer Amplification Ordering Information appears at end of data sheet. Functional Diagrams appear at end of data sheet. Typical Operating Circuit 3.3V +10V 3V MAX44251 V OUT R BUFFER R 1 MAX6126 10V V DD +10V -10V R V VREF DD 50R G MAX44251 V BUFFER IN+ R G MICRO- 50R R G PROCESSOR OUTPUT MAX11211 VIN- +10V -10V VSS R BUFFER 1.5V C 1 MAX44251 -10V MAX is a registered trademark of Maxim Integrated Products, Inc. 19-6000 Rev 6 1/17MAX44250/MAX44251/ 20V, Ultra-Precision, Low-Noise Op Amps MAX44252 Absolute Maximum Ratings Supply Voltage (V to V ).................................-0.3V to +22V MAX (derate 4.5 mW/C above +70C) ....................362mW DD SS All Other Pins ..................................(V - 0.3V) to (V + 0.3V) SO (derate 8.3 mW/C above +70C) ......................666.7mW SS DD Operating Temperature Range ........................ -40C to +125NC Short-Circuit Duration to Either Supply Rail ............................ 1s Continuous Input Current (any pin) ................................. 20mA Junction Temperature .....................................................+150NC Storage Temperature Range ............................ -65C to +150NC Differential Input Voltage ...................................................... 6V Lead Temperature (soldering, 10s) .............................. +300NC Maximum Power Dissipation (T = +70C) A Soldering Temperature (reflow) .................................... +260NC 5-Pin SOT23 (derate 3.1mW/C above +70C) ........246.7mW 8-Pin SOT23 (derate 9.1mW/C above +70C) ...........727mW Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, and functional opera- tion 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. Package Thermal Characteristics (Note 1) 5-Pin SOT23 MAX Junction-to-Ambient Thermal Resistance ( ) .... 324.3C/W Junction-to-Ambient Thermal Resistance ( ) ........221C/W JA JA Junction-to-Case Thermal Resistance ( ) ...............82C/W Junction-to-Case Thermal Resistance ( ) ...............42C/W JC JC 8-Pin SOT23 SO Junction-to-Ambient Thermal Resistance ( ) ....... 196C/W Junction-to-Ambient Thermal Resistance ( ) ........120C/W JA JA Junction-to-Case Thermal Resistance ( ) ...............70C/W Junction-to-Case Thermal Resistance ( ) ...............37C/W JC JC Note 1: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-layer board. For detailed information on package thermal considerations, refer to www.maximintegrated.com/thermal-tutorial. Electrical Characteristics (V = 10V, V = 0V, V = V = V /2, R = 10kI to V /2, T = -40C to +125C, unless otherwise noted. Typical values are DD SS IN+ IN- DD L DD A at T = +25C.) (Note 2) A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS POWER SUPPLY Supply Voltage Range V Guaranteed by PSRR 2.7 20 V DD Power-Supply Rejection Ratio PSRR V = 2.7V to 20V, V = 0V 140 145 dB DD CM (Note 3) T = +25NC 1.22 1.7 Quiescent Current per Amplifier A I R = J mA DD L (MAX44250) 1.85 -40NC < T < +125NC A T = +25NC 1.15 1.55 Quiescent Current per Amplifier A I R = J mA DD L (MAX44251/MAX44252) -40NC < T < +125NC 1.75 A Power-Up Time t 25 Fs ON DC SPECIFICATIONS V - V - SS DD Input Common-Mode Range V Guaranteed by CMRR test V CM 0.05 1.5 T = +25NC, V = -0.05V to (V - A CM DD 133 140 Common-Mode Rejection Ratio 1.5V) CMRR dB (Note 3) -40NC < T < +125NC 130 A Input Offset Voltage V T = +25NC 3 9 FV OS A (MAX44250) (Note 3) Maxim Integrated 2 www.maximintegrated.com