INA166 Signal And Power Supply Basic Connection Circuit

Published:2011/6/7 18:49:00 Author:Robert | Keyword: Signal, Power Supply, Connection | From:SeekIC

The INA166 Signal And Power Supply Basic Connection Circuit is shown in the picture below. The chip power supply port needs a 0.1uF tantalum capacitor for filtering. When in PCB layout it should make the tantalun capacitor as close to the chip power supply foot as possible. The output voltage detecting port Sense's connection and basic port Ref's connection must be connected with low resistance to assure high CMRR. If there is a 5Ω resistance in series it could reduce the CMRR. Its internal fixed gain is 2000. The input stage A1 and A2's gain is 200. The output stage A3's stage is 10. The amplifier gain can be changed by adding a gain-setting resistance RG between 3 foot and 12 foot. The gain would be G=2000+60000/RG.



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