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Figure 2 plots output power vs input power for five voltage gains spaced at 20dB intervals. The ldBm compression points occur where the actual output power (solid lines) deviates by -ldBm from the ideal output power (dashed lines). Compression is produced by different mechanisms depending on the selected gain. For example, at G = -40dB, ldBm compression occurs when the input signal approaches approximately 3Vp-p (13.5dBm for Rs = 50 I ). Input over- loading is the compression mechanism for all gains from -40dB to about -5dB. For gains between -5dB and +5dB, the compression is due to internal gain stage overloading. Compression over this gain range occurs when the output signal becomes distorted as intemal gain stages become overdriven. At G = OdB, ldBm compression occurs when the input exceeds approximately l.5Vp-p (7.5dBm). At gains greater than about SdB, the compression mechanism is due to output stage overloading. Output overloading occurs