HMC948LP3ETR

HMC948LP3ETR is a logarithmic detector convert RF signal at its input, to a proportional DC voltage at its output. This employs successive compression topology which delivers high dynamic range over a wide input frequency range. As the input power is increased, successive amplifiers move into saturation one by one creating an approximation of the logarithm function. The output of a series of square law detectors is summed, converted into the voltage domain and buffered to drive the LOG OUT output. Typical application includes point-to-point microwave radio, VSAT, wideband power monitoring, receiver signal strength indication (RSSI), test & measurement.

• Excellent stability over temperature
• Input frequency is 1GHz (typ, TA = +25°C, Vcc = +3.3V)
• Typical ±3dB dynamic range is 53dB (TA = +25°C, Vcc = +3.3V)
• Typical ±3dB dynamic range centre is -23dBm (TA = +25°C, Vcc = +3.3V)
• Log error over temperature (-40 to +85) is ±1dB (typ, TA = +25°C, Vcc = +3.3V)
• Output intercept is -104dBm (typ, TA = +25°C, Vcc = +3.3V)
• Output slope is 16.8mV/dB (typ, TA = +25°C, Vcc = +3.3V)
• Output voltage range is 0.9V (min, TA = +25°C, Vcc = +3.3V)
• Operating voltage range from 3.15 to 3.45V (TA = +25°C, Vcc = +3.3V)
• 16 lead QFN-EP package, operating temperature range from -40 to +85°C

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