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LMG1210: LMG1210EVM-012

Part Number: LMG1210

Dear Sir,

We are having difficulty testing the LMG1210EVM-012, we are using a 10 Volt power supply for the input bias supply, 26 volt for the input DC supply while PWM signal is square wave 1MHz' 4V p-p and duty cycle between 20-80%. we added a capacitor 47uF at the output. We get an output between 5-19V depending the duty cycle. Do you have any idea  why we don't get the 26V in the output at the high duty cycle?

Regards

Yosi Aga