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Active Feedback IC Serves As Current Sensing Instrumentation
Amplifier: 07/24/03 EDN Design Ideas / (added 12/04) High-speed current sensing presents a designer with some significant challenges. Most techniques for sensing current involve measuring the differential voltage the current produces as it
flows through a sense element, such as a resistor or a Hall-effect device. The differential voltage across the sense element is generally small and is often riding on a common-mode voltage that is considerably ......
Amplifier And Current Source Emulate Instrumentation Amplifier:
11/13/03 EDN Design Ideas / (added 12/04) The classic three- or two-op-amp instrumentation-amplifier circuits are standard ways to amplify a small-amplitude differential signal contaminated with high common-mode noise. In some applications, the signal
source is floating with high-series-output impedance and thus requires an appropriate high-input-impedance amplifier....
AN-345: Grounding for
Low-and-High-Frequency Circuits: AN-345 - Analog Devices Application Notes (added 2/06) Know Your Ground and Signal Paths for Effective Designs. Current Flow Seeks Path of Least Impedance-Not Just Resistance....
AN-347: Shielding and Guarding:
AN-347 - Analog Devices Application Notes (added 2/06) How to Exclude Interference-Type Noise. What to do and Why to do it-A Rational Approach
AN-584: Using the AD813X Differential
Amplifier: AN-584 - Analog Devices Application Notes (added 2/06) The AD813x differs from conventional op amps by the external presence of an additional input and output. The additional input, VOGM, controls the output common mode voltage.
AN-589: Ways to Optimize the Performance of a
Difference Amplifier: AN-589 - Analog Devices Application Notes (added 2/06) This Application Note presents several ways to build and optimize the performance of a discrete difference amplifier. It also recommends amplifiers that will make the overall
solution cost/performance competitive with monolithic instrument amplifiers.