LTC5531 Datasheet | Linear Technology

.. LTC5531 Precision 300MHz to 7GHz RF Detector with Shutdown and Offset Adjustment Features s s s s s s s s s DESCRIPTIO Temperature pensated Internal Schottky Diode RF Detector Wide Input Frequency Range: 300MHz to 7GHz- Wide Input Power Range: - 32d Bm to 10d Bm Buffered Detector Output Precision VOUT Offset Control Wide VCC Range of 2.7V to 6V Low Operating Current: 500µA Low Shutdown Current: <2µA Available in a Low Profile (1mm) SOT-23 Package The LTC®5531 is an RF power detector for RF applications operating in the 300MHz to 7GHz range. A temperature pensated Schottky diode peak detector and buffer amplifier are bined in a small Thin SOTTM 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. A power saving shutdown mode reduces current to less than 2µA. The initial offset voltage of 120m V ±35m V can be precisely adjusted using the VOS pin. The LTC5531 operates with input power levels from - 32d Bm to 10d Bm. , LTC and LT are registered trademarks of Linear Technology Corporation. Thin SOT is a trademark of Linear Technology Corporation. - Higher frequency operation is achievable with reduced performance. Consult factory for more information. U APPLICATIO S s s s s s s s 802.11a, 802.11b, 802.11g, 802.15, 802.16 Multimode Mobile Phone Products Optical Data Links Wireless Data Modems Wireless and Cable Infrastructure RF Power Alarm Envelope Detector TYPICAL APPLICATIO VOUT Output Voltage vs RF Input Power 300MHz to 7GHz RF Power Detector 33p F RF INPUT 1 VOUT OUTPUT VOLTAGE (m V) LTC5531 VCC 6 RFIN 100p F 2 GND VOUT 5 VOS = 0V 3200 VCC = 3.6V TA = 25°C 2800 2400 2000 1600 1200 800 400 VCC 0.1µF DISABLE ENABLE SHDN 4 VOS VOS REFERENCE 5531 TA01 - 30 - 26 - 22 - 18 - 14 - 10 - 6 - 2 2 RF INPUT POWER (d Bm) 2000MHz 1000MHz 4000MHz 3000MHz 300MHz...