DC2932A

Demonstration circuit 2932A hosts a high accuracy RMS power detector featuring the LTC®5597 IC. This ultrawide bandwidth device has a RMS response that measures RF and microwave signals from 100MHz to 70GHz. The input signal converts to a DC voltage that is logarithmically proportional to the input signal level. Moreover, the LTC5597 offers unprecedented sensitivity, capable of detecting signals of -37dBm typical. Additionally, it has outstanding input dynamic range up to 35dB, achieving 1dB accuracy, depending on frequency. The detector output voltage slope is normally 29mV/dB. The PCB layout employs the recommended microstrip transmission line structure, as well as the recommended endpoint transitions. Input impedance to LTC5597 is internally matched to 50 ohm. It is suitable for RMS measurements of high crest factor waveforms up to 12dB peak/average ratio. No external coupling capacitor is necessary if DC voltage at RFIN pin is kept below 1V.

• Case operating temperature range from -40°C to 105°C
• Supply voltage (VCC) of 3.8V (maximum)
• RFIN input power average of 15dBm

Warnings

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party

Notes

Voltage on all pins must not exceed VCC + 0.3V or be less than -0.3V.