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Review of Jim Williams: AN128 2 Nanosecond 0.1 Percent Resolution Settling Time Measurement for Wideband Amplifiers

Download AN128 2 Nanosecond 0.1 Percent Resolution Settling Time Measurement for Wideband Amplifiers (2010, Linear Technology, 24 pages, 0.99 MB pdf file)

AN128 discusses in detail the problems that arise during high precision settling time measurements and some possible solutions. On page 5 the complete circuit that was used to measure the settling time of the LT1818 is shown. Very interesting are Appendix B (Practical Considerations for Amplifier Compensation p.12 -14) that explains how the compensation capacitor should be selected for best dynamic response, Appendix C (Evaluating Oscilloscope Overdrive Performance p.14 p.17), Appendix E (Connections, Cables, Adapters, Attenuators, Probes and Picoseconds p.19), Appendix F (Breadboarding, Layout and Connection Techniques p.20) and Appendix G (How Much Bandwidth is Enough ? p. 21).

You may also be interested in some other Application Notes by Jim Williams. For more information on settling time measurements you could look at AN120 1ppm Settling Time Measurement for a Monolithic 18-Bit DAC.

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