AD8209A Datasheet | Analog Devices

FEATURES ±8000 V HBM ESD for shunt-based applications AEC-Q100 qualified EMI filters included High mon-mode voltage range - 2 V to +50 V operating - 20 V to +70 V survival Buffered output voltage Gain = 14 V/V Low-pass filter (single-pole or two-pole) Wide operating temperature range: - 40°C to +125°C Excellent ac and dc performance ±1 m V typical voltage offset - 5 ppm/°C typical gain drift 80 d B CMRR minimum dc to 10 k Hz Qualified for automotive applications APPLICATIONS High-side current sensing Motor controls Solenoid controls Power management Low-side current sensing Diagnostic protection GENERAL DESCRIPTION The AD8209A is a single-supply difference amplifier ideal for amplifying and low-pass filtering small differential voltages in the presence of a large mon-mode voltage. The input monmode voltage range extends from - 2 V to +50 V at a single 5 V supply. The AD8209A is qualified per AEC-Q100 specifications. The amplifier offers enhanced input overvoltage and ESD protection, and includes electromagnetic interference (EMI) filtering. High Voltage, Precision Difference Amplifier FUNCTIONAL BLOCK DIAGRAM VS A1 A2 EMI FILTER +IN EMI FILTER - IN EMI FILTER + G=7 - + G=2 - OUT 14511-001 Figure 1. Automotive applications demand robust, precision ponents for improved system control. The AD8209A provides excellent ac and dc performance, minimizing errors in the application. Typical offset and gain drift in the MSOP package are less than 5 µV/°C and - 5 ppm/°C, respectively. The device also delivers a minimum mon-mode rejection ratio (CMRR) of 80 d B from dc to 10 k Hz. The AD8209A features an externally accessible 100 kΩ resistor at the output of the preamplifier (A1) that can be used for lowpass filtering and for establishing gains other than 14 V/V. Rev. A Document Feedback Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibilityisassumedby Analog Devices for itsuse,nor foranyinfringementsof...