introduction this easy-to-use kit provides a platform for the evaluation of linear power ampli?ers circuits using the mp108fd & mp111fd pin out. with ample bread boarding areas it is ?exible enough to analyze a multitude of standard or proprietary circuit con - ?gurations. critical connections for power supply bypassing are pre-wired. components not usually readily available in engineering labs are provided. external connection to the evaluation kit can be made via the terminal block and terminal pads at the edges of the circuit board. the terminal pads are suitable for soldering standard banana jacks or direct wiring of wires. additionally, banana jacks and a bnc connector can be inserted into the holes at the edge of the board and wired to the numbered terminal pads. before you get started ? all apex ampli?ers should be handled using proper esd precautions. ? do not change connections while the circuit is powered. ? initially set all power supplies to the minimum operating voltage allowed in the device data sheet. parts list ref apex part # description/vendor qty na hs28 heat sink 1 na hs31 heat sink 1 na ms11 strip of 30 cage jacks 2 na eval57 pc board 1 na 60spg00004 spacer grommets/ 4 micro plastics c1,4,5,6 ox7r105kwn 1uf cap/ 4 novacap 1825b105k201n ts1 ts02 terminal strip 1 c2,3 ec03 680uf 200v/ 2 united chemi-con kmh200vn681m25mx40t2 rlim* csr18 0.050 ohm resistor/ 1 isotek pbv-r050-1 rlim* csr19 0.100 ohm resistor/ 1 isotek pbv-r100-1 assembly during assembly refer to figure 2 and the data sheet for the mp108fd & mp111fd. 1. note that each side of the circuit board is identi?ed as either the "component side" or "dut side". 2. cut the ms11 into groups of 16 and 18 cage jacks and insert from the "dut side" of the board. on the "component side" of the board, solder all cage jacks having solder pads (7, 9, 10, 23, 24, 26, 29, and 31 have no solder pads). make sure the cage jacks are fully seated before soldering. be careful that solder does not ?ow into the cage jacks. remove the unsoldered cage jacks with the carrier strip segments. 3. solder the surface mount capacitors at c1, c4, c5, and c6 on the "component side" of the board. 4. low ohm value resistors are provided with this evaluation kit: 0.050 ohm and 0.100 ohm. these are used to implement current limiting in the output circuit. select the value most appropriate for your application. refer to the product data sheet to determine which resistor value you should use. 5. mount the hs28 heat sink to the pcb and solder the mount - ing tabs of the heat sink. 6. apply a thin layer of thermal grease on the back of the chosen current limiting sense resistor, insert the resistor into the pcb and mount the resistor to the hs28 heat sink using #4 screw and nut hardware (not supplied). be sure to cut off the excess resistor lead lengths. 7. mount the electrolytic capacitors at c2 and c3 from the "component side" of the pcb. match the polarity markings on the capacitor with the polarity markings on the pcb. be sure the capacitors have snapped into the pcb and solder from the "dut side" of the pcb. be sure to ?ll the holes with solder. 8. mount the terminal strip to the "component side" of the pcb. make sure the terminal strip is fully seated and solder the pins from the "dut side" of the pcb. be sure to ?ll the mounting holes with solder. 9. mount and wire the banana jacks and bnc connector (nei - ther supplied) to the pcb pads at locations 1-5 as needed or desired. 10. mount other components to complete your application circuit using the pads and holes provided. 11. from the "dut side" of the pcb snap the spacer- grom - mets into the holes at the four corners of the pcb. notice that the holes are slightly rectangular and match the spacer- grommet's long and short sides to the holes in the pcb. 12. apply a thin, uniform layer of thermal grease to the ampli?er; a straight edge may be useful here. position the ampli?er over the mounting holes in the heatsink. firmly push the ampli?er onto the heatsink while slightly rotating the ampli - ?er back and forth, ending with the mounting holes of the ampli?er over the mounting holes in the heatsink. 13. attach the ampli?er to the heatsink with 4-40x? male- female hex spacers (not supplied). these spacers serve as alignment pins and aide in the assembly of the pcb to the heatsink. alternatively, use 4-40x? machine screws to mount the ampli?er to the heatsink. do not over-tighten the spacers or screws as this provides no thermal bene?t and may break the hardware. 14. place the pcb assembly on the heatsink/ampli?er assembly so that the hex spacers come through the aligning holes near the corners of the ampli?er location in the pcb. care - fully lower the pcb assembly until the pins of the ampli?er engage the cage jacks. alternately, sight through the align - ing holes in the pcb and match-up the pcb to the screws used to mount the ampli?er. in either case be sure the pins of the ampli?er are engaged with the cage jacks and then continue pushing the pcb assembly in the area between apex microtechnology corporation ? telephone (520) 690-8600 ? fax (520) 888-3329 ? orders (520) 690-8601 ? email prodlit@apexmicrotech.com 1 ? ? ? ? ? ? ? ? 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figure 1: schematic diagram assembly cont. the ampli?ers pins until the four spacer grommets at the four corners of the pcb touch the heatsink. at this point the pcb should not be bowed. 15. use #8 x 1" sheet metal screws (not provided) to mount the pcb to the heat sink at the four spacer-grommets. 16. inspect the assembly from the side and check that the pcb is not bowed toward the heat sink. if the pcb is bowed use a small tool to carefully pry the pcb away from the heat sink until the pcb is ?at. 17. hook up power and signals as necessary. the ampli?er is now ready for testing. ??? ??? ?? ???????????????????? ??????????????????? ???????????????????????? ??????????????????????? ???????????????????????????? ??? ?? ??? ?? ??? ?? ??? ?? ??? ?? ?? ? ? ? ? ? ?? ???? ? ?? ? ?? ????? ?? ?? ?? ?? ????? ?? ? ??? ? ?? ?? ??? ?? ?? ?? ?? ?? ?? ?? ??? ??? ??? ? ? ? ? ??? ?? ?? ? ? ? ?? ?? ? ??? ??? ?? ?? ??? ??? ?? ?? ??? ?? ?? ??? ??? ??? ??? ?? ?? ?? ?? ??? ?? ?? ??? ??? ??? ??? ??? ??? ????? ??? apex microtechnology corporation ? 5980 north shannon road ? tucson, arizona 85741 ? usa ? applications hotline: 1 (800) 546-2739 2 evaluation kit for mp108fd EK57
figure 2: apex microtechnology corporation ? telephone (520) 690-8600 ? fax (520) 888-3329 ? orders (520) 690-8601 ? email prodlit@apexmicrotech.com 3 evaluation kit for mp108fd EK57 ???????? ???????? ??????????? ????? ???? ????? ???? ??? ??? ??? ??? ????? ??? ??? ??? ??? ???? ?????? ???? ?????? ???? ?????? ???? ?????? ????????? ??? ? ? ? ? ? ???? ?? ? ? ?? ?? ?? ?? ?? ??? ??? ??? ?? ? ?? ?? ??? ??? ??? ??? ??? ????? ?? ?????????????? ??? ????????? ?????????? ??????????????? ? ????
figure 3: ?????????????? ?????????? ????????????? ?????????????? ?????????????????????? ??????????????????????? ???????? ???????????? ????????????????? ????????????? ???????????????????????????????????? ?????????????????? ?????????????? ??????????? ????????????? ?????????? ??????????????????????????????? ??????????????????????? apex microtechnology corporation ? 5980 north shannon road ? tucson, arizona 85741 ? usa ? applications hotline: 1 (800) 546-2739 4 evaluation kit for mp108fd EK57 this data sheet has been carefully checked and is believed to be reliable, however, no responsibility is assumed for possible inaccuracies or omissions. all speci?cations are subject to change without notice. EK57u rev b january 2005 ? 2005 apex microtechnology corp.
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