apex microtechnology corporation ? telephone (520) 690-8600 ? fax (520) 888-3329 ? orders (520) 690-8601 ? email prodlit@apexmicrotech.com 1 introduction this easy-to-use kit provides a platform for the evaluation of pwm ampli?er circuits using the sa07 pin-out. with ample breadboarding areas it is ?exible enough to analyze a multitude of standard or proprietary circuit con?gurations. critical con - nections for power supply bypassing, compensation and current limiting are pre-wired. components not usually readily available in engineering labs are provided. external connection to the evaluation kit can be made via the terminals at the edge of the circuit board. these terminal pads are suitable for standard banana jacks or direct soldering of wires. the schematic is shown in figure 1. parts list part # description, vendor quantity clamp02 mounting clip, apex 1 hs21 heat sink, apex 1 eval18 pc board, apex 1 two9 thermal washer, apex 1 box/10 each ox7r105kwn capacitor, novacap 2 1825b105k201n crs01 resistor, caddock 2 mp725-0.10-1% crs02 resistor, caddock 2 mp725-0.05-1% assembly see figure 3. 1. solder the surface mount ceramic capacitors to the dut side of the circuit board at cvs and cvcc. 2. select a current limiting resistor from the two values provided. see the product data sheet for information on how to select a value. apply a thin coating of thermal grease to the back of the resistors. press the resistor body onto the circuit board foil at positions ra and rb and solder the leads. 3. assemble the ampli?er, thermal washer and heat sink to the circuit board as illustrated in figure 1. as a last step push the clip through the heat sink and circuit board until it locks. solder the ampli?er pins to the circuit side of the circuit board. 4. the four holes at the corners of the circuit board are for mounting #6 standoff spacers if desired. 5. add other components as necessary to complete your ap - plication circuit. before you get started * all apex ampli?ers should be handled using proper esd precautions. * always use thermal grease between the ampli?er and heat - sink. * always use adequate power supply bypassing. * do not change connections while the circuit is powered. * initially set all power supplies to the minimum operating levels allowed in the device data sheet. ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ??????????????????????????????? ????
apex microtechnology corporation ? 5980 north shannon road ? tucson, arizona 85741 ? usa ? applications hotline: 1 (800) 546-2739 2 EK07 evaluation kit for sa07 pin-out ?? ?? figure 1 shows the schematic of the evaluation kit's pre-wired connections components supplied with the kit are marked with an asterisk (*). all other con - nections are made via the bread-boarding areas of the circuit board. figure 1.
apex microtechnology corporation ? telephone (520) 690-8600 ? fax (520) 888-3329 ? orders (520) 690-8601 ? email prodlit@apexmicrotech.com 3 evaluation kit for sa07 pin-out EK07 figure 2. figure 2 shows a suggested simple test circuit that you can build to gain a familiarity with the evalua - tion kit as well as the ampli?er. at the a out or b out pads relative to power ground you should observe a square wave with a frequency of approximately 500khz, 30v p-p which is being modulated from ap - proximately 0 to 100 % duty cycle at a rate of 1 hz.
apex microtechnology corporation ? 5980 north shannon road ? tucson, arizona 85741 ? usa ? applications hotline: 1 (800) 546-2739 4 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. EK07u rev c october 2004 ? 2004 apex microtechnology corp. EK07 evaluation kit for sa07 pin-out ??? ? ? ??? ????? ??? ???? ??????? ? ????? ??? ??? ? ?? ????? ? ??? ??? ??????? ??????? ??? ??? ??? ?? ??? ?? ??? ?? ??? ?? ?? ?? ?? ??? ?? ?????? ? ???????? ???? ???? ??? ???????? ?????????? ? ? ? ? ? ? ??? ??? ??? ?? ?? ?? ? ? ? ? ? ? ? ? ? ? ? ?? ??? ????? ??? ? ??? ??? ??? ? ????? ???? ?? ? ??? ? ??????? ??? ????? ??? ??????? ?? ?? ???????? ??????????? ???? ???? figure 3. pcb ??? ? ? ??? ????? ??? ???? ??????? ? ????? ??? ??? ? ?? ????? ? ??? ??? ??????? ??????? ??? ??? ??? ?? ??? ?? ??? ?? ??? ?? ?? ?? ?? ??? ?? ?????? ? ???????? ???? ???? ??? ???????? ?????????? ? ? ? ? ? ? ??? ??? ??? ?? ?? ?? ? ? ? ? ? ? ? ? ? ? ? ?? ??? ????? ??? ? ??? ??? ??? ? ????? ???? ?? ? ??? ? ??????? ??? ????? ??? ??????? ?? ?? ???????? ??????????? ???? ????
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