assembly log detector schematic for additional product information, plea s e visit www .twinind.com contact information: 925-866-8946 (phone) 925-866-8937 (fax) sales@twinind.com microamp MB-12 circuit board for analog devices log detectors 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 con?gured in measurement or controller modes by selectvely installing the appropriate resistors. using these detectors, the MB-12 can provide a wide dynamic range log detecton functon at frequencies up to 10 ghz. this board will ?t 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 versatlity. boards are fabricated from a high-performance 13 mil thick ro-4350 laminate with rohs compatble enig platng (electroless nickel/immersion gold) on both the component side and the solid botom 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 adjustng performance parameters of the log detector. pads for the input/output connectors allow the sma center pins to be easily soldered to the board afer 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 size function c1 0402 dc block c2 0402 dc block/bypass c3 0603 bypass c4 0603 bypass (not labeled) c5 0603 lowpass ?lter c6 0603 output lowpass ?lter r1 0603 meas mode divider r2 0603 meas mode divider r3 0603 temp comp r4 0603 output lowpass ?lter r5 0603 input match u1 lfcsp log detector ic j1 rf input j2 log video output j3 + bias (not labeled) j4 controller mode input ? 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 features
|
