特点
Temperature Compensated Internal Schottky Diode RF Detector
Wide Input Frequency Range: 300MHz to 7GHz*
Wide Input Power Range: –32dBm to 10dBm
Buffered Detector Output
Precision V
OUT
Offset Control
Wide V
CC
Range of 2.7V to 6V
Low Operating Current: 500μA
Low Shutdown Current: <2μA
Available in a Low Profile (1mm) SOT-23 Package
典型应用
典型应用
描述
The LTC?5531 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 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 V OUT pin. A power saving shutdown mode reduces current to less than 2μA. The initial offset voltage of 120mV ±35mV can be precisely adjusted using the V OS pin.
The LTC5531 operates with input power levels from –32dBm to 10dBm.
*Higher frequency operation is achievable with reduced performance. Consult factory for more information.