5597 TA01a LTC5597 100MHz to 70GHz Linear-in-dB RMS Power Detector with 35dB Dynamic Range FEATURES DESCRIPTION n Ultra Wide Matched Input Frequency Range: The LTC 5597 is a high accuracy RMS power detector that 100MHz to 70GHz provides a very wide RF input bandwidth, from 100MHz n 35dB Linear Dynamic Range (< 1dB Error) up to 70GHz. This makes the device suitable for a wide n 28.5mV/dB Logarithmic Slope range of RF and microwave applications, such as point- n 2dB Flat Response from 100MHz to 60GHz to-point microwave links, instrumentation and power n Accurate RMS Power Measurement of High Crest control applications. Factors (Up to 12dB) Modulated Waveforms The DC output voltage of the detector is an accurate n Low Power Shutdown Mode representation of the average signal power applied to the n Low Supply Current: 33mA at 3.3V (Typical) RF input. The response is linear-in-dB with 28.5mV/dB n Small 2mm 2mm Plastic DFN8 Package logarithmic slope over a 35dB dynamic range with typically n I-Grade: 40C to 105C Rated better than 1dB accuracy. The detector is particularly H-Grade: 40C to 125C Rated suited for measurement of waveforms with crest factor with Guaranteed Log-Slope and Log-Intercept (CF) as high as 12dB, and waveforms that exhibit a sig- n ESD Rating: 2500V HBM, 1500V CDM nificant variation of the crest factor during measurement. To achieve higher accuracy and lower output ripple, the APPLICATIONS averaging bandwidth can be externally adjusted by a ca- n Point-to-Point Microwave Links pacitor connected between the FLTR and OUT pins. n SATCOM The enable interface switches the device between active n Instrumentation and Measurement Equipment measurement mode and a low power shutdown mode. n Military Radios All registered trademarks and trademarks are the property of their respective owners. Protected n 5G, LTE, WiFi, Wireless Networks by U.S. patents, including 9330283, 9639719. n RMS Power Measurement n Receive and Transmit Gain Control n RF PA Transmit Power Control TYPICAL APPLICATION 100MHz to 70GHz RMS Power Detector Output Voltage vs Frequency 1.4 0dBm 1 5dBm 3.3V 1.2 10dBm 100nF 15dBm 1.0 20dBm ENABLE EN V CC 25dBm LTC5597 30dBm 0.8 GND OUT ADC 35dBm C FLTR 0.6 RF RF FLTR IN IN GND GND 0.4 0.2 0 0.1 1 10 100 RF FREQUENCY (GHz) 5597 TA01b Rev. 0 1 Document Feedback For more information www.analog.com OUTPUT VOLTAGE (V)LTC5597 ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATION (Note 1) Supply Voltage (V ) ...............................................3.8V CC TOP VIEW RF Input Signal Power - Average .......................15dBm IN 1 8 V EN CC RF Input Signal Power - Peak (Note 2) ..............20dBm IN 2 OUT 7 GND 9 DC Voltage at RF ....................................... 0.3V to 1V IN 3 FLTR 6 RF IN DC Voltage at FLTR ................................... 0.3V to 0.4V GND 4 5 GND DC Voltage at EN ....................................... 0.3V to 3.8V T .................................................................... 150C JMAX DC PACKAGE Case Operating Temperature Range (T ): 8-LEAD (2mm 2mm) PLASTIC DFN C T = 150C, = 25C/W JMAX JC I-Grade (Note 3) ................................ 40C to 105C EXPOSED PAD (PIN 9) IS GND, MUST BE SOLDERED TO PCB H-Grade (Note 4) .............................. 40C to 125C Storage Temperature Range .................. 65C to 150C ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE LTC5597IDC PBF LTC5597IDC TRPBF LHKF 8-Lead 2mm 2mm Plastic DFN 40C to 105C LTC5597HDC PBF LTC5597HDC TRPBF LHKF 8-Lead 2mm x 2mm Plastic DFN 40C to 125C Contact the factory for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container. Tape and reel specifications. Some packages are available in 500 unit reels through designated sales channels with TRMPBF suffix. ELECTRICAL CHARACTERISTICSThe l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at T = 25C. V = 3.3V, EN = 3.3V. CW, 50 source at RF , f = 2.7GHz, test C CC IN RF circuit is shown in Figure 1. I-GRADE (NOTE 3) H-GRADE (NOTE 4) PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS RF Input Input Frequency Range 0.1 to 70 0.1 to 70 GHz Input Impedance 50 50 50 50 fF Detector Response (RF to OUT) IN RF Input Power Range, T = 25C f = 100MHz 38.2 to 4.5 38.2 to 4.5 dBm C RF 1dB LOG-Linearity Error (Note 5, 6) f = 500MHz 41.7 to 3.2 41.7 to 3.2 dBm RF f = 1GHz 40.8 to 3.5 40.8 to 3.5 dBm RF f = 2.7GHz 40.1 to 3.5 40.1 to 3.5 dBm RF f = 5.8GHz 40.6 to 3.3 40.6 to 3.3 dBm RF f = 10GHz 41.1 to 3.0 41.1 to 3.0 dBm RF f = 15GHz 40.2 to 3.7 40.2 to 3.7 dBm RF f = 18GHz 40.0 to 3.6 40.0 to 3.6 dBm RF f = 24GHz 40.0 to 3.6 40.0 to 3.6 dBm RF f = 28GHz 39.3 to 4.3 39.3 to 4.3 dBm RF f = 30GHz 38.7 to 4.7 38.7 to 4.7 dBm RF f = 39GHz 38.0 to 5.2 38.0 to 5.2 dBm RF f = 42GHz 38.1 to 5.0 38.1 to 5.0 dBm RF f = 50GHz 40.0 to 3.0 40.0 to 3.0 dBm RF f = 52GHz 40.0 to 2.8 40.0 to 2.8 dBm RF f = 60GHz 39.4 to 1.5 39.4 to 1.5 dBm RF f = 67GHz 38.3 to 0.2 38.3 to 0.2 dBm RF f = 70GHz 36.1 to 1.9 36.1 to 1.9 dBm RF Rev. 0 2 For more information www.analog.com