MB-12

MicroAmp MB-12 Circuit Board For Analog Devices Log Detectors FEATURES • Fits Analog Devices AD8317/8319 LFCSP packages • 10 GHz frequency range • Controller or Measurement mode • Uses standard SMD passive parts • RO-4350 board material • Fits MicroAmp MH-series housings The MicroAmp MB-12 circuit board is designed for rapid prototyping of RF log detector circuits using Analog Devices AD8317/8319 devices in LFCSP packages. It can be configured in measurement or controller modes by selectively installing the appropriate resistors. Using these detectors, the MB-12 can provide a wide dynamic range log detection function at frequencies up to 10 GHz. This board will fit the MicroAmp MH series of connectorized housings that allow it to be used as a stand-alone detector or cascaded with other MicroAmp boards for added versatility. Boards are fabricated from a high-performance 13 mil thick RO-4350 laminate with RoHS compatible ENIG plating (electroless nickel/immersion gold) on both the component side and the solid bottom ground plane. The board measures 0.490" x 0.590" and mounts into the housing with four #1-72 screws. Detector circuits can be easily designed and assembled with standard surface-mount passive components. It includes provisions for input DC blocking, impedance matching, and other RC components for adjusting performance parameters of the log detector. Pads for the input/output connectors allow the SMA center pins to be easily soldered to the board after it is installed into the housing, as well as large pads to connect the bias voltage and controller mode input pins to feed-throughs. REF C1 C2 C3 C4 C5 C6 R1 R2 R3 R4 R5 U1 J1 J2 J3 J4 LOG DETECTOR SCHEMATIC SIZE 0402 0402 0603 0603 0603 0603 0603 0603 0603 0603 0603 LFCSP FUNCTION DC block DC block/bypass Bypass Bypass (not labeled) Lowpass filter Output lowpass filter Meas mode divider Meas mode divider Temp comp Output lowpass filter Input match Log Detector IC RF input Log video output + Bias (not labeled) Controller mode input ASSEMBLY For additional product information, please visit www.twinind.com Contact information: 925-866-8946 (phone) 925-866-8937 (fax) Sales@twinind.com