LTC5508 300MHz to 7GHz RF Power Detector with Buffered Output in SC70 Package
FEATURES
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DESCRIPTIO
Temp...
LTC5508 300MHz to 7GHz RF Power Detector with Buffered Output in SC70 Package
FEATURES
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DESCRIPTIO
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 SC70 Package
The LTC®5508 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.
, LTC and LT are registered trademarks of Linear Technology Corporation.
U APPLICATIO S
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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
TYPICAL APPLICATIO
Output Voltage vs RF Input Power
10000 VCC = 3.6V TA = 25°C
RF INPUT
33pF 6 2
LTC5508 VCC 4 RFIN GND SHDN GND 5 100pF
VCC 0.1µF
VOUT OUTPUT VOLTAGE (mV)
300MHz to 7GHz RF Power Detector
1000 2GHz 1GHz 4GHz 6GHz 7GHz
DISABLE ENABLE
1
V...