HMC948LP3E v02.0913 54 dB, LOGARITHMIC DETECTOR, 1 - 23 GHz Typical Applications Features The HMC948LP3E is ideal for: Wide Input Bandwidth: 1 to 23 GHz Point-to-Point Microwave Radio Wide Dynamic Range: 54 dB up to 23 GHz VSAT Single Positive Supply: +3.3V Wideband Power Monitoring Excellent Stability Over Temperature Fast Rise / Fall Time: 5 / 7 ns Receiver Signal Strength Indication (RSSI) 16 Lead 3x3 mm SMT Package: 9 mm Test & Measurement Functional Diagram General Description The HMC948LP3E Logarithmic Detector converts RF signals at its input, to a proportional DC voltage at its output. The HMC948LP3E 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. The HMC948LP3E provides a nominal logarithmic slope of +14.2 mV/dB and an intercept of -111 dBm at 23 GHz. Ideal as a log detector for high volume micro- wave radio and VSAT applications, the HMC948LP3E is housed in a compact 3x3 mm RoHS compliant SMT plastic package. Electrical Specifications, T = +25 C Vcc = +3.3V A Parameter Typ. Typ. Typ. Typ. Typ. Typ. Typ. Units 1 Input Frequency 1 5 10 14 18 20 23 GHz 3 dB Dynamic Range 53 54 54 55 55 55 55 dB 3 dB Dynamic Range Center -23 -25 -24 -22 -20 -15 -15 dBm Log Error Over Temperature (-40 to +85) 1 1 1 1.5 1.5 1.5 1.5 dB Output Intercept -104 -107 -109 -112 -113 -108 -111 dBm Output Slope 16.8 16.7 15.9 15.2 14.6 14.4 14.2 mV/dB 1 Video output load should be 1K Ohm or higher. Information furnished by Analog Devices is believed to be accurate and reliable. However, no For price, delivery, and to place orders: Analog Devices, Inc., For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824 responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106 rights of third parties that may result from its use. Specifications subject to change without notice. No Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com Phone: 781-329-4700 Order online at www.analog.com license is granted by implication or otherwise under any patent or patent rights of Analog Devices. 1 Trademarks and registered trademarks are the property of their respective owners. Application Support: Phone: 1-800-ANALOG-D Application Support: Phone: 978-250-3343 or apps hittite.com POWER DETECTORS - SMTERROR (dB) ERROR (dB) ERROR (dB) ERROR (dB) HMC948LP3E v02.0913 54 dB, LOGARITHMIC DETECTOR, 1 - 23 GHz Electrical Specifications, (continued) Parameter Conditions Min. Typ. Max. Units LOGOUT Interface Output Voltage Range 0.9 1.8 V 1 2 Output Rise Time / Fall Time f = 10 GHz 5 / 7 ns Power Supply (Vcc) Operating Voltage Range 3.15 3.3 3.45 V Supply Current in Normal Mode 91 mA 1 0 dBm Input Pulsed measured from 10% to 90% 2 0 dBm Input Pulsed measured from 90% to 10% LOG OUT & Error LOG OUT & Error vs. Input Power, Fin = 1 GHz vs. Input Power, Fin = 5 GHz 3 3 2 2 Ideal Ideal Log Out +25 C 2 Log Out +25 C 2 Log Out +85 C Log Out +85 C Log Out -40 C Log Out -40 C 1 1 1.5 1.5 0 0 1 -1 1 -1 ERR +25 C ERR +25 C -2 -2 ERR +85 C ERR +85 C ERR -40 C ERR -40 C -3 -3 0.5 0.5 -60 -50 -40 -30 -20 -10 0 10 -60 -50 -40 -30 -20 -10 0 10 INPUT POWER (dBm) INPUT POWER (dBm) LOG OUT & Error LOG OUT & Error vs. Input Power, Fin = 10 GHz vs. Input Power, Fin = 14 GHz 3 3 2 2 Ideal Ideal Log Out +25 C Log Out +25 C 2 2 Log Out +85 C Log Out +85 C Log Out -40 C Log Out -40 C 1 1 1.5 1.5 0 0 1 -1 1 -1 ERR +25 C -2 -2 ERR +25 C ERR +85 C ERR +85 C ERR -40 C ERR -40 C -3 -3 0.5 0.5 -60 -50 -40 -30 -20 -10 0 10 -60 -50 -40 -30 -20 -10 0 10 INPUT POWER (dBm) INPUT POWER (dBm) Unless otherwise noted: Vcc = +3.3V, T = +25 C A Information furnished by Analog Devices is believed to be accurate and reliable. However, no For price, delivery, and to place orders: Analog Devices, Inc., For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824 responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106 rights of third parties that may result from its use. Specifications subject to change without notice. No Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com Phone: 781-329-4700 Order online at www.analog.com license is granted by implication or otherwise under any patent or patent rights of Analog Devices. 2 Trademarks and registered trademarks are the property of their respective owners. Application Support: Phone: 1-800-ANALOG-D Application Support: Phone: 978-250-3343 or apps hittite.com LOG OUT (V) LOG OUT (V) LOG OUT (V) LOG OUT (V) POWER DETECTORS - SMT