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Part Number: OPA521EVM
Other Parts Discussed in Thread: OPA521

Hi Team

    We have tested the OPA521 Line Driver, and the main problems are as follows:

1:In FCC band (150 KHZ to 500 KHZ) cases, the load resistance is 2 Ω, PA distortion is very serious. The magnification of the figure below is 7 times, R105 NC.Schematic diagram, test waveform diagram is as follows:

2:On the EVM entry board, 1.6 Ω load test waveform distortion is very serious, please help to analysis the reason? Thank you very much!