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LTC5508 - 300MHz to 7GHz RF Power Detector with Buffered Output in SC70 Package

The LTC5508 is an RF power detector for RF applications operating in the 300MHz to 7GHz range. A temperature compensated Schottky diode peak detector and buffer amplifier are combined in a small SC70 package. The supply voltage range is optimized for operation from a single lithium-ion cell or 3xNiMH.

The RF input voltage is peak detected using an on-chip Schottky diode. The detected voltage is buffered and supplied to the Vout pin. A power saving shutdown mode reduces supply current to less than 2µA.

The LTC5508 operates with input power levels from –32dBm to 12dBm.

Features Temperature Compensated Internal Schottky Diode RF Detector Wide Input Frequency Range: 300MHz to 7GHz Wide Input Power Range: –32dBm to 12dBm Buffered Detector Output Wide VCC Range of 2.7V to 6V Low Operating Current: 550µA Low Shutdown Current: <2µA SC70Package Typical Application

Applications 802.11a, 802.11b, 802.11g, 802.15 Multimode Mobile Phone Products Optical Data Links Wireless Data Modems Wireless and Cable Infrastructure RF Power Alarm Envelope Detector Packaging

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