Datasheet AD8209 (Analog Devices)

High Voltage, Precision Difference Amplifier Data Sheet AD8209 FEATURES FUNCTIONAL BLOCK DIAGRAM ±8000 V HBM ESD for shunt-based applications VS A1 A2 AEC-Q100 qualified EMI EMI filters included FILTER AD8209 High common-mode voltage range EMI IN+ FILTER + + −2 V to +45 V operating G = 7 G = 2 OUT EMI – – IN– −24 V to +80 V survival FILTER Buffered output voltage Gain = 14 V/V Low-pass filter (single-pole or two-pole)
001
Wide operating temperature range GND
08461-
−40°C to +125°C for WB grade
Figure 1.
−40°C to +150°C for WH grade Excellent ac and dc performance ±1 mV voltage offset −5 ppm/°C typical gain drift 80 dB CMRR minimum dc to 10 kHz Qualified for automotive applications APPLICATIONS High-side current sensing Motor controls Solenoid controls Power management Low-side current sensing Diagnostic protection GENERAL DESCRIPTION
The AD8209 is a single-supply difference amplifier ideal for performance, minimizing errors in the application. Typical offset amplifying and low-pass filtering small differential voltages in the and gain drift in the MSOP package are less than 5 µV/°C and presence of a large common-mode voltage. The input common- 10 ppm/°C, respectively. The device also delivers a minimum mode voltage range extends from −2 V to +45 V at a single +5 V CMRR of 80 dB from dc to 10 kHz. supply. The AD8209 is qualified per AEC-Q100 specifications. The The AD8209 features an external y accessible 100 kΩ resistor at amplifier offers enhanced input overvoltage and ESD protection, the output of the preamplifier (A1), which can be used for low- and includes EMI filtering. pass filtering and for establishing gains other than 14. Automotive applications demand robust, precision components for improved system control. The AD8209 provides excellent ac and dc
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Document Outline FEATURES APPLICATIONS FUNCTIONAL BLOCK DIAGRAM GENERAL DESCRIPTION REVISION HISTORY SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS THEORY OF OPERATION APPLICATIONS INFORMATION HIGH-SIDE CURRENT SENSINGWITH A LOW-SIDE SWITCH HIGH-RAIL CURRENT SENSING LOW-SIDE CURRENT SENSING 4 mA to 20 mA Current Loop Receiver GAIN ADJUSTMENT Gains Less than 14 Gains Greater than 14 GAIN TRIM Internal Signal Overload Considerations LOW-PASS FILTERING HIGH LINE CURRENT SENSINGWITH LPF AND GAIN ADJUSTMENT OUTLINE DIMENSIONS ORDERING GUIDE AUTOMOTIVE PRODUCTS