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AD8205

Analog Devices
Part Number AD8205
Manufacturer Analog Devices
Description Single-Supply 42 V System Difference Amplifier
Published Jun 9, 2011
Detailed Description Data Sheet FEATURES Ideal for current shunt applications High common-mode voltage range −2 V to +65 V operating −25 V to...
Datasheet PDF File AD8205 PDF File

AD8205
AD8205

Overview
Data Sheet FEATURES Ideal for current shunt applications High common-mode voltage range −2 V to +65 V operating −25 V to +75 V survival Gain = 50 V/V Wide operating temperature range: −40°C to +125°C for Y and W grade −40°C to +150°C for H grade Bidirectional operation Available in 8-lead SOIC Qualified for automotive applications 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 AD8205 is a single-supply difference amplifier for amplifying small differential voltages in the presence of large common-mode voltages.
The operating input common-mode voltage range extends from −2 V to +65 V.
The typical singlesupply voltage is 5 V.
The AD8205 is offered in an 8-lead SOIC package and rated for operation from −40°C to +125°C for the Y and W grade models.
The H grade version of the AD8205 is rated from −40°C to +150°C.
Excellent dc performance over temperature keeps errors in the measurement loop to a minimum.
Offset drift is typically less Single-Supply 42 V System Difference Amplifier AD8205 FUNCTIONAL BLOCK DIAGRAM V+ 6 +IN 8 –IN 1 5 OUT AD8205 7 VREF1 04315-0-001 NC 4 NC = NO CONNECT 2 GND Figure 1.
3 VREF2 than 15 µV/°C, and gain drift is typically below 30 ppm/°C.
The output offset can be adjusted from 0.
05 V to 4.
8 V with a 5 V supply by using the VREF1 and VREF2 pins.
With VREF1 attached to the V+ pin, and VREF2 attached to the GND pin, the output is set at half scale.
Attaching both pins to GND causes the output to be unipolar, starting near ground.
Attaching both pins to V+ causes the output to be unipolar starting near V+.
Other offsets can be obtained by applying an external voltage to the VREF1 and VREF2 pins.
Rev.
D Information furnished by Analog Devices is believed to be accurate and reliab...


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