LTC5505 Series

RF Power Detector with Buffered Output and >40dB Dynamic Range

Catalog

RF Power Detector with Buffered Output and >40dB Dynamic Range

Part	Package / Case	Current - Supply	Input Range [Max]	Input Range [Min]	RF Type	Frequency [Max]	Frequency [Min]	Mounting Type	Voltage - Supply [Max]	Voltage - Supply [Min]
Analog Devices LTC5505-1ES5#TRMPBF	SOT-23-5 Thin TSOT-23-5	500 µA	18 dBm	-28 dBm	Cellular PCS Wireless Modem	3 GHz	300 MHz	Surface Mount	6 V	2.7 V

Catalog

RF Power Detector with Buffered Output and >40dB Dynamic Range

Key Features

• Internal Schottky Diode RF Detector with Two Input Power Ranges:

• LTC5505-1, –28dBm to 18dBm

• LTC5505-2, –32dBm to 12dBm

• Wide Input Frequency Range: 300MHz to 3GHz (LTC5505-1); 300MHz to 3.5GHz (LTC5505-2)

• Temperature Compensated

• Buffered Detector Output

• Wide VCCRange of 2.7V to 6V

• Low Operating Current: 0.5mA

• Low Shutdown Current: <2µA

• Low Profile (1mm) ThinSOT™Package

Description

The LTC5505-X is an RF power detector for RF applications operating in the 300MHz to 3.5GHz range. A temperature compensated Schottky diode peak detector and buffer amplifier are combined in a small 5-pin ThinSOT 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 VOUTpin. A power saving shutdown mode reduces supply current to less than 2µA.The LTC5505-1 operates with input power levels from –28dBm to 18dBm. The LTC5505-2 operates with input power levels from –32dBm to 12dBm.ApplicationsMultimode Mobile Phone ProductsPCS DevicesWireless Data ModemsWireless and Cable InfrastructureRF Power AlarmEnvelope Detector