To distinguish between them, read second number, which indicates voltage. D-size package, usually black but may be tan, like number 12. Marked with 2 numbers, first indicating capacitance, second – rated voltage. 6-10uH inductor, Sumida CDRH5D18 or similar. Linear Technology LT1376-5 buck controller IC. Very hard to distinguish from number 5, the only way to avoid mix-up is to keep them separated. Most of them have distinctive shape and therefore easily identifiable, but beware of number 6! The rest of the parts are present only in “Full” kit. Very hard to distinguish from number 6 in “Full” set, the only way to avoid mix-up is to keep them separated. Four on a tape in “Isolator Only” set, five in “Full” set. Usually black in color, but may also be blue. Four on a tape, marked “240”, “24R0”, or similar. Three on a tape, marked “105” (or “501” if you are holding it upside down) on top. This is the largest of small parts, you won’t miss it. Usually comes on a tape, but may be packaged differently, for example, in a piece of IC “tube”. Wide 16-pin SOIC package, clearly marked on the top. Analog Devices ADuM4160 IC, the heart of the circuit. They will be soldered very late in the build, together with connectors – for now it’s best to put them away. Used to program USB speed on both sides of the isolators. A pair of 0.1″ headers with 2 pin jumpers. Again, “Isolator Only” set is on the left aligned in a single column. For next several steps, a pair of tweezers and magnifier glass will be helpful. The easiest way to get parts out of the bag is to cut the bag along the long edge with scissors. Some parts are mounted on a tape – it is generally good idea to keep them this way until the moment you are ready to solder them. These parts are also lightweight so sneezing into a pile of parts is not recommended. No matter which kit you are building, dealing with small unmarked parts is inevitable. “Full Kit” on the right contains more parts, as well as one extra connector. Parts are in the lower compartment, PCB – in the middle of the bag, and connectors are on the top. When parts kit arrives in the mail, it usually looks like one on Photo 1 (click on it to make it bigger). In this manual, I give step-by-step instruction on building USB isolator kit and also talk about tweaking and modifying the circuit for certain applications.īoth “Isolator Only” and “Full” Kits are covered.īefore starting assembly, please download the schematic. It is reliable and quite affordable way to provide galvanic isolation between host PC and USB peripheral. USB Isolator kits, released in October 2009, has been popular among PC-based test instrument users, software-defined radio operators, and DIY audio builders, to name a few. This is assembly guide for Analog Devices ADuM4160-based full/low speed USB Isolator kits from Circuits At Home.
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