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ALM-31122 Datasheet(PDF) 6 Page - Broadcom Corporation. |
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ALM-31122 Datasheet(HTML) 6 Page - Broadcom Corporation. |
6 / 12 page 6 Demo Board Schematic 3 8 Bias C5 C4 C8 C7 Module Outline 50-Ohms TL Output match C2 R1 C6 C1 Z1 Z2 R2 C3 1,2,19,20 Input match 50-Ohms TL 21 20 19 17,18 16 3,4 5 1,22 12,13,14,15 7 8 9 10 11 6 1,2,19,20 2 Circuit Symbol Size Value Description C1, C6 0805 2.2uF Ceramic Chip Capacitor C2, C4, C8 0402 0.1uF Ceramic Chip Capacitor C3, C5, C7 0402 10nF Ceramic Chip Capacitor R1 0805 0 Ohm Chip Resistor R2 0805 Not Used N/A Z1, Z2 0805 Not Used Zener Diode 5.6V (Optional) Figure 6. Demo board application schematics and components table Demo Board Layout 10 1 RF input 20-pin Connector RF output 1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11 Pins pointingout of the page Unit is ontop Pins 1,2,19,20 = Vsupply = Vdd Pin 3 = Vsense (optional) Pins 5,6,15,16 = GND Pin 8 = Vctrl Other pins are not used Figure 7. Demo Board Layout Diagram 1. Recommended PCB material is 10 mils Rogers RO4350, with FR4 backing for mechanical strength. 2. Suggested component values may vary according to layout and PCB material. |
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