LTC5509 Datasheet | Linear Technology

LTC5509 300MHz to 3GHz RF Power Detector in SC70 Package Features s s s s s s s s DESCRIPTIO Temperature pensated Internal Schottky Diode RF Detector Wide Input Frequency Range: 300MHz to 3GHz Wide Input Power Range: - 30d Bm to 6d Bm Buffered Detector Output Wide VCC Range of 2.7V to 6V Low Operating Current: 600µA Low Shutdown Current: <2µA SC70 Package The LTC®5509 is an RF power detector for RF applications operating in the 300MHz to 3GHz range. A temperature pensated Schottky diode peak detector and buffer amplifier are bined in a small SC70 package. The supply voltage range is optimized for operation from a single lithium-ion cell or 3x Ni MH. The RF input voltage is peak detected using an on-chip Schottky diode. The detected voltage is buffered and supplied to the VOUT pin without gain pression. Consequently, the output voltage is linearly proportional to the RF input voltage. A power saving shutdown mode reduces supply current to less than 2µA. The LTC5509 operates with input power levels from - 30d Bm to 6d Bm. , LTC and LT are registered trademarks of Linear Technology Corporation. U APPLICATIO S s s s s s s Multimode Mobile Phone Products Optical Data Links Wireless Data Modems Wireless and Cable Infrastructure RF Power Alarm Envelope Detector TYPICAL APPLICATIO Output Voltage vs RF Input Power 3000 VCC = 3.6V TA = 25°C 850MHz 1.85GHz 2000 3GHz 1500 1000 500 0 0 - 30 - 25 - 20 - 15 - 10 - 5 RF INPUT POWER (d Bm) RF INPUT 33p F 6 2 LTC5509 VCC 4 RFIN GND SHDN GND 5 100p F VCC 0.1µF DISABLE ENABLE VOUT 3 VOUT 5509 TA01 VOUT OUTPUT VOLTAGE (m V) 300MHz to 3GHz RF Power Detector 5 10 5509...