EVALUATION KIT AVAILABLE Click here for production status of specific part numbers. MAX9636/MAX9637/ 3V/5V Low-Power, Low-Noise, CMOS, MAX9638 Rail-to-Rail I/O Op Amps General Description Benefits and Features The MAX9636/MAX9637/MAX9638 are single-supply, Ideal for Precision Transimpedance Amplifier CMOS input op amps featuring wide bandwidth at low Applications quiescent current, making them suitable for a broad range Ultra-Low 0.1pA Bias Current of battery-powered applications such as portable medical Wide 1.5MHz Bandwidth instruments, portable media players, and smoke detec- Low Input Current-Noise Density: 0.9fA/Hz tors. A combination of extremely low input bias currents, Extend Battery Life low input current noise and low input voltage noise allows Single-Supply Operation V = 2.1V to 5.5V DD interface to high-impedance sources such as photodiode Low 36A Quiescent Current and piezoelectric sensors. 1A Quiescent Current in Shutdown The ICs feature a maximized ratio of gain bandwidth Save Board Space (GBW) to supply current. The devices operate from a 6 and 8-Pin SC70 and 10-Pin UTQFN Packages single 2.1V to 5.5V supply at a typical quiescent supply current of 36A. For additional power conservation, the MAX9636 and MAX9638 offer a low-power shutdown mode that reduces supply current to 1A and places the Ordering Information amplifiers outputs into a high-impedance state. PART TEMP RANGE PIN-PACKAGE The ICs are specified over the automotive operating tem- MAX9636AXT+ -40C to +125C 6 SC70 perature range (-40C to +125C). The single is offered MAX9637AXA+ -40C to +125C 8 SC70 in a space-saving, 6-pin SC70 package, while the dual is offered in tiny, 8-pin SC70 and 10-pin UTQFN packages. MAX9638AVB+ -40C to +125C 10 UTQFN +Denotes a lead(Pb)-free/RoHS-compliant package. Applications T = Tape and reel. Portable Medical Instruments Piezoelectric Transducer Amplifiers Smoke Detectors Battery-Powered Devices Transimpedance Amplifiers Tablets Block Diagram V DD PHOTODIODE MAX1286 IN- SIGNAL CONDITIONING/ OUT MAX9636 ADC FILTERS IN+ REF 19-5228 Rev 5 5/19MAX9636/MAX9637/ 3V/5V Low-Power, Low-Noise, CMOS, MAX9638 Rail-to-Rail I/O Op Amps Absolute Maximum Ratings V , SHDN to V .................................................-0.3V to +6V 8-Pin SC70 (derate 3.1mW/C above +70C)..............245mW DD SS IN+, IN-, OUT ................................... GND - 0.3V to V + 0.3V ..........................................................................326C/W DD JA Continuous Input Current (any pins) ................................20mA ..........................................................................115C/W JC Output Short Circuit to V or V Duration .......................... 5s 10-Pin UTQFN (derate 7mW/C above +70C) ...........558.7mW DD SS Thermal Limits (Note 1) .......................................................................143.2C/W JA Multiple Layer PCB .........................................................................20.1C/W JC Continuous Power Dissipation (T = +70C) Operating Temperature Range ......................... -40C to +125C A 6-Pin SC70 (derate 3.1mW/C above +70C) .............245mW Junction Temperature ......................................................+150C .......................................................................326.5C/W Lead Temperature (soldering 10s) ..................................+300C JA ..........................................................................115C/W Soldering Temperature (reflow) .......................................+260C 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. 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 = 3.3V, V = 0V, V = V = V = V /2, R = 10k to V /2, SHDN = V , T = -40C to +125C. Typical values are at DD SS IN+ IN- CM DD L DD DD A T = +25C, unless otherwise noted.) (Note 2) A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS DC CHARACTERISTICS V - V + SS DD Input Voltage Range V , V Guaranteed by CMRR V IN+ IN- 0.1 0.1 T = +25C 0.3 2.2 A Input Offset Voltage V mV OS T = -40C to +125C 3.5 A MAX9636 only 7 Input Offset Voltage Drift TCV V/C OS (Note 3) MAX9637, MAX9638 only 10 T = +25C 0.1 0.8 A Input Bias Current (Note 3) I T = -40C to +85C 50 pA B A T = -40C to +125C 800 A T = +25C 72 86 V < V < A SS CM (V - 1.4V) Common-Mode Rejection Ratio CMRR T = -40C to +125C 68 dB DD A (V - 0.1V) < V < (V + 0.1V) 58 77 SS CM DD V = 0.25V from rails 104 124 OUT Open-Loop Gain A dB OL V = 0.4V from rails, R = 600 100 120 OUT L Short to V 55 DD Output Short-Circuit Current I mA SC Short to V 40 SS R = 10k 0.014 0.03 L Output Voltage Low V V V OL OUT R = 600 0.044 0.08 L R = 10k 0.019 0.04 L Output Voltage High V V - V V OH DD OUT R = 600 0.057 0.1 L SHDN = V , V = 0V to V (MAX9636, SS OUT DD Output Leakage in Shutdown 0.01 1 A MAX9638 only) Maxim Integrated 2 www.maximintegrated.com