Datasheet AD8208 (Analog Devices)

High Voltage, Precision Difference Amplifier Data Sheet AD8208 FEATURES FUNCTIONAL BLOCK DIAGRAM Qualified for automotive applications VS A1 A2 EMI filters included EMI High common-mode voltage range FILTER AD8208 −2 V to +45 V operating EMI +IN + + FILTER −24 V to +80 V survival G = 10 G = 2 OUT EMI – – Buffered output voltage –IN FILTER Gain = 20 V/V Low-pass filter (1-pole or 2-pole) Wide operating temperature range
001
−40°C to +125°C for WB grade GND
08714-
−40°C to +150°C for WH grade
Figure 1.
Excellent ac and dc performance ±1 mV voltage offset −5 ppm/°C typical gain drift 80 dB CMRR minimum dc to 10 kHz APPLICATIONS High-side current sensing Motor controls Solenoid controls Power management Low-side current sensing Diagnostic protection GENERAL DESCRIPTION
The AD8208 is a single-supply difference amplifier ideal for Automotive applications demand robust, precision components for amplifying and low-pass filtering small differential voltages in the improved system control. The AD8208 provides excellent ac and presence of a large common-mode voltage. The input common- dc performance, minimizing errors in the application. Typical mode voltage range extends from −2 V to +45 V at a single +5 V offset and gain drift in both the SOIC and MSOP packages are supply. The AD8208 is qualified for automotive applications. The less than 5 µV/°C and 10 ppm/°C, respectively. The device also amplifier offers enhanced input overvoltage and ESD protection, delivers a minimum CMRR of 80 dB from dc to 10 kHz. and includes EMI filtering. The AD8208 features an externally accessible 100 kΩ resistor at the output of the preamplifier (A1), which can be used for low- pass filtering and for establishing gains other than 20.
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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 Sensing with 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 20 Gains Greater than 20 Gain Trim Internal Signal Overload Considerations Low-Pass Filtering High Line Current Sensing with LPF and Gain Adjustment Outline Dimensions Ordering Guide Automotive Products