LINEARITY ERROR (dB) LT5534 50MHz to 3GHz RF Power Detector with 60dB Dynamic Range FEATURES DESCRIPTION n RF Frequency Range: 50MHz to 3GHz The LT 5534 is a 50MHz to 3GHz monolithic RF power n Linear Dynamic Range: 60dB detector capable of measuring RF signals over a 60dB n Exceptional Accuracy over Temperature dynamic range. The RF signal in a decibel scale is pre- and Power Supply cisely converted into DC voltage on a linear scale. The n Fast Transient Response: 60dB input dynamic range is achieved using cascaded RF 38ns Full-Scale Settling Time detectors and RF limiters. Their outputs are summed to n Single 2.7V to 5.25V Supply generate an accurate log-linear DC voltage proportional n Low Supply Current: 7mA to the input RF signal in dB. The output is buffered with a n Shutdown Current: 0.1A low output impedance driver. The LT5534 delivers superior n Tiny 6-Lead SC70 Package temperature stability (typical output variation within 1dB over the full temperature range). The output responds in less than 40ns to a large RF input signal. APPLICATIONS L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. n RF RSSI and ACC n RF Power Control n CATV Power Detection n Optical Receiver Gain Control TYPICAL APPLICATION Output Voltage 50MHz to 3GHz RF Power Detector vs RF Input Power 3V 2.4 3 0.1F 100pF V = 3V CC AT 900MHz 2.0 2 V LT5534 CC 1.6 1 DET DET DET DET DET V OUT V OUT 1nF 1.2 0 RF RF INPUT 47 0.8 1 ENABLE EN GND T = 25C 0.4 2 A 5534 TA01 T = 85C A TA = 40C 0 3 60 50 40 30 20 10 0 RF INPUT POWER (dBm) 5534 TA01b 5534fc 1 V (V) OUTLT5534 ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATION (Note 1) TOP VIEW Power Supply Voltage ..............................................5.5V EN 1 6 RF Enable Voltage .....................................................0V, V CC GND 2 5 GND RF Voltage (+10dBm Equivalent) ..............................1V V 3 4 V OUT CC Operating Ambient Temperature Range ...40C to 85C Storage Temperature Range ...................65C to 125C SC6 PACKAGE 6-LEAD PLASTIC SC70 Lead Temperature (Soldering, 10 sec) .................. 300C T = 125C, = 256C/W JMAX JA ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE LT5534ESC6 PBF LT5534ESC6 TRPBF LBGD 6-Lead Plastic SC70 40C to 85C Consult LTC Marketing for parts specified with wider operating temperature ranges. Consult LTC Marketing for information on non-standard lead based finish parts. For more information on lead free part marking, go to: