EVALUATION KIT AVAILABLE Click here to ask about the production status of specific part numbers. MAX41400 Low-Power, Precision Instrumentation Amplifier with Programmable Gain General Description Benefits and Features The MAX41400 is a low-power, high-precision instrumen- Supply Voltage Range: 1.7V to 3.6V tation amplifier with programmable gain through input Very Low 25V (max) Input Offset Voltage pins. Low 65A Quiescent Current Rail-to-Rail Inputs and Outputs Available in a space-saving, 9-bump wafer-level package EMIRR (WLP) with a 0.4mm bump pitch, it is designed for use in >100dB at 1800MHz, 2400MHz portable medical and industrial sensor applications. >90dB at 900MHz The device features internal EMI filters to protect from RF 28kHz, -3dB Bandwidth disturbances and EMI. The internal fixed gain can be se- On-the-Fly Programmable Gain: lected from 10V/V to 250V/V. The gain-setting resistors 10V/V, 20V/V, 40V/V, 80V/V, 100V/V, 150V/V, are located inside the device, thus minimizing gain drift 200V/V, and 250V/V variations over the temperature range. Power-Saving Shutdown Mode The MAX41400 features rail-to-rail CMOS inputs and out- Available in Tiny 1.26mm x 1.23mm, 9-Bump WLP puts a 28kHz, -3dB bandwidth at just 65A (typ) supply and 2.5mm x 2mm, 10-Pin TDFN current and 25V (max) zero-drift input offset voltage over time and temperature. The zero-drift feature eliminates the Ordering Information appears at end of data sheet. high 1/f noise typically found in CMOS input amplifiers, making it useful for a wide variety of low-frequency mea- surement applications. The MAX41400 operates from a 1.7V to 3.6V power sup- ply voltage and is specified over the -40C to +125C au- tomotive temperature range. Applications Low-Power Sensor Interface Pressure, Weight, and Force Sensors RTD Temperature Sensors Wearable Devices EKG Medical Devices Insulin and Infusion Pumps 19-100852 Rev 2 7/21MAX41400 Low-Power, Precision Instrumentation Amplifier with Programmable Gain Simplified Block Diagram V DD MAX41400MAX41400 IN- EMI FILTER G0 GAIN: 8 STEPS G1 FROM OUT 10V/V TO G2 250V/V IN+ EMI FILTER SHDN GND REFIN www.maximintegrated.com Maxim Integrated 2