LTC5532 Datasheet | Linear Technology

Final Electrical Specifications LTC5532 300MHz to 7GHz Precision RF Power Detector with Gain and Offset Adjustment August 2003 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 8d Bm Buffered Detector Output with External Gain Control Precision VOUT Offset Control Low Offset Voltage: 120m V ±35m V for Gain = 2x Wide VCC Range of 2.7V to 6V Low Operating Current: 500µA Available in a Low Profile (1mm) SOT-23 Package The LTC®5532 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. The LTC5532 output buffer gain is set via external resistors. The initial offset voltage of 120m V ±35m V can be precisely adjusted using the VOS pin. The LTC5532 operates with input power levels from - 32d Bm to 8d Bm. , LTC and LT are registered trademarks of Linear Technology Corporation. Thin SOT is a trademark of Linear Technology Corporation. U APPLICATIO S s s s s s s s 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 300MHz to 7GHz RF Power Detector 33p F RF INPUT 1 VOUT OUTPUT VOLTAGE (m V) VCC = 3.6V 3200 TA = 25°C GAIN = 2 2800 VOS = 0V 2400 2000 1600 1200 800 400 2000MHz 3000MHz LTC5532 VCC 6 RFIN 100p F 5 RA VOS VM 5532 TA01 VCC 0.1µF VOUT VOS REFERENCE 4 RB - 32 - 27 - 22 - 17 - 12 - 7 - 2 RF INPUT POWER (d...