LTC1966输入隔直电容多大合适？

Thread Summary

The user is designing a circuit to measure the RMS value of a sine wave signal (0-1V, 10Hz-1000KHz) using the LTC1966 with R1=R2=100KΩ and VDD=5V. The final answer suggests an input impedance of 8MΩ and recommends a Cc value of 22nF. Accompanying answers clarify that achieving 0.1% precision across the entire frequency range is challenging, especially at higher frequencies, and suggest using a higher Cc value (22uF) for better low-frequency performance. The user also inquires about the input impedance equivalence and the feasibility of using AD637 for lower power consumption in a 4-20mA application.
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