Datasheet AD8206 (Analog Devices)

High Common-Mode Voltage, Bidirectional Current Shunt Amplifier Data Sheet AD8206 FEATURES FUNCTIONAL BLOCK DIAGRAM Ideal for current shunt applications V+ 6 High common-mode voltage range −2 V to +65 V operating +IN 8 5 OUT −25 V to +75 V survival –IN 1 Gain = 20 Wide operating temperature range AD8206 7 VREF1 −40°C to +125°C for Y grade and WY grade −40°C to +150°C for WH grade Bidirectional operation 3 VREF2 NC 4 Available in 8-lead SOIC 2 Qualified for automotive applications GND NC = NO CONNECT
04953-001 Figure 1.
EXCELLENT AC AND DC PERFORMANCE 15 µV/°C offset drift 30 ppm/°C gain drift 80 dB CMRR dc to 20 kHz APPLICATIONS High-side current sensing in Motor controls Transmission controls Diesel-injection controls Engine management Suspension controls Vehicle dynamic controls DC-to-dc converters GENERAL DESCRIPTION
The AD8206 is a single-supply difference amplifier for amplifying The output offset can be adjusted from 0.08 V to 4.7 V with a smal differential voltages in the presence of large common-mode 5 V supply by using the VREF1 and VREF2 pins. With VREF1 voltages. The operating input common-mode voltage range extends attached to the V+ pin, and VREF2 attached to the GND pin, the from −2 V to +65 V. The typical single-supply voltage is 5 V. output is set at half scale. Attaching both pins to GND causes The AD8206 is offered in an 8-lead SOIC package. The Y grade the output to be unipolar, starting near ground. Attaching both and WY grade models are rated for operation from −40°C to pins to V+ causes the output to be unipolar starting near V+. +125°C. The WH grade is rated from −40°C to +150°C. Other offsets can be obtained by applying an external voltage to the VREF1 and VREF2 pins. Excellent DC performance over temperature keeps errors in the measurement loop to a minimum. Offset drift is typically less than 15 µV/°C, and gain drift is typically below 30 ppm/°C.
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Document Outline FEATURES EXCELLENT AC AND DC PERFORMANCE APPLICATIONS FUNCTIONAL BLOCK DIAGRAM GENERAL DESCRIPTION TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS THEORY OF OPERATION OUTPUT OFFSET ADJUSTMENT UNIDIRECTIONAL OPERATION GROUND REFERENCED OUTPUT V+ REFERENCED OUTPUT BIDIRECTIONAL OPERATION EXTERNAL REFERENCED OUTPUT SPLITTING THE SUPPLY SPLITTING AN EXTERNAL REFERENCE APPLICATIONS INFORMATION HIGH-SIDE CURRENT SENSE WITH A LOW-SIDE SWITCH HIGH-SIDE CURRENT SENSE WITH A HIGH-SIDE SWITCH OUTLINE DIMENSIONS ORDERING GUIDE AUTOMOTIVE PRODUCTS