EVAL-CN0399-SDPZ

EVAL-CN0399-SDPZ is a CN-0399 circuit evaluation board. This is an RF power measurement circuit that accurately measures the power from an RF signal source within a frequency range of 9KHz to 6GHz, and has a nominal input power range of 45dBm (-30dBm to +15dBm). This circuit constitutes a complete rms RF power meter in a tiny form factor that can be powered entirely from a 5V USB power supply. The measurement signal chain consists of an rms responding RF power detector and a 12-bit, precision analogue-to-digital converter (ADC). These devices are powered by a CMOS linear regulator which generates 3.3V from the 5V USB supply. A simple calibration routine can be performed at multiple frequencies to compensate for any frequency response variation of the circuit. Calibration data is stored in a lookup table, which is referenced during the RF power measurement.

• Battery or USB powered 9KHz to 6GHz RMS power measurement system