assembly prescaler 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-11 circuit board for hittite sot-23 prescalers the microamp MB-11 circuit board is designed for rapid prototyping of hitte microwave 6-pin sot-23 prescalers. hmc-43x prescal - ers are available in divide by 2/4/8 versions (hmc-432/433/434) which operate at input frequencies as high as 8 ghz. this board will ?t the microamp mh series of connectorized housings that allow it to be used as a single prescaler 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 or six #1-72 screws to insure optmal grounding for high frequency operaton. prescaler circuits can be easily assembled with standard surface-mount passive components. it includes provisions for input and output dc blocking capacitors and bias bypass capacitors. pads for the rf 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 a large pad to connect the bias voltage to the feed-through. these prescalers have a tendency to output broadband noise or oscillatons when not driven with su?cient input power. consult the hitte data sheets for proper drive levels. ref size function c1 0402 dc block c2 0402 dc block c3 0603 bypass c4 0603/0805 bypass u1 sot-23 prescaler j1 signal input (pin 3) j2 signal output (pin 6) j3 bias (pin 5) ? fits hitte 6-pin sot-23 prescaler packages ? divide by 2/4/8 con?guratons ? input frequencies up to 8 ghz ? dc blocks on input and output ? ro-4350 board material ? fits microamp mh-series housings features
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