ADL5502: maximum input and output

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Question In the section of SPECIFICATIONS, the maximum output voltage is specified as 
 below, please see figure 1. According to the figures in TYPICAL PERFORMANCE 
 CHARACTERISTICS, the VRMS is less than 2V. The customer wonders in what 
 condition VRMS output reaches 2.4V. I check with ADL5502 datasheet. It is said 
 that At 900 MHz, the VRMS output voltage is nominally 1.89 times the input rms 
 voltage (a conversion gain of 1.89 V/V rms). Similarly, the PEAK output voltage 
 is nominally 1.27 times the input rms voltage (a conversion gain of 1.27 V/V 
 rms). The rms output voltage swings from near ground to 2.4 V on a 3.0 V 
 supply. I think the output is 2.7V when getting the Absolute Maximum Ratings. 
 1.25Vrms * 1.89V/Vrms=2.36V, please see figure 2. To be honest, I am not sure 
 about it and need your confirmation. Could you please help give some comments 
 on it? Answer I think the confusion is because the figures stop at an input of +13 dBm when 
 the part can handle +15 dBm. There was a limit on the test equipment output 
 ability and the plots where cut off two dB short (arbitrarily). If you where to 
 plot to the full +15 dBm limit, then you would see the full 2.4 V range. I made 
 an Excel sheet of the way the plot would look. I hope this will help clear it 
 up (red stops at 13 dBm, blue stops at 15 dBm), please see figures 3 and 4.

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ADL5502: FAQ

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