apex microtechnology corporation ? telephone (520) 690-8600 ? fax (520) 888-3329 ? orders (520) 690-8601 ? email prodlit@apexmicrotech.com 1 introduction fast, easy breadboarding of circuits using the pa241dw and the pa15 are possible with the EK42 pc board. mounting holes are provided and the provision for standard banana jacks simpli?es connection and testing. the ampli?er may be mounted horizontally or vertically. components are labeled on both sides of the board for ease in probing. a multitude of circuit con?gurations are possible, so only several component locations have speci?c functions and will usually always be necessary: c5,c7 power supply bypasses must be used. usually ceramic types of 0.01 to 0.1f. r1 feedback resistor. r2 input resistor. r9, c11 compensation (see ampli?er data sheet). r5 current limit (see ampli?er data sheet). r7 most often used as input bias current return for +input in non-inverting circuits. r3, c6 noise gain compensation. necessary only occasion - ally, see application notes 19 and 25. the following locations should be jumpered unless used (their most common anticipated function is listed). r4, r8 input protection. r11 general purpose. r6 output current sense. the function of any other components is up to the designers needs and imagination. equivalent schematic ?? ??? ??? ?? ???? ??? ??? ?? ?? ?? ?? ?? ??? ??? ?? ?? ?? ?? ?? ?? ?? ?? ??? ?? ? ? ? ?? ? ? ? ? ? ?? ??? ?? ??? ??? note: illustration only, not to exact scale. ? ? ? ? ? ?? ? ? ?? ? ? ? ? ? ?? ? ? ? ? ??? ??? ?? ??? ??? ??? ?? ?? ?? ?? ?? ?? ???? ?? ??? ???? ??? ??? ?? ??? ?? ?? ?? ??? ?? ?? ??? ??? ?? ? ???? ????? ?? ??? ??? ?? ??? ??? ??? ?? ??? ???? ???? ?? ?? ?? ?? ?? ?? ?? ?? ??? ??? ?? ?? ??? ?? ??? ?? ??? ??? ? ???? ?????? ???? ?????? caution high voltages will be present. use caution in handling and probing when power is applied. ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ??????????????????????????????????????????? ???? 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. EK42u rev c november 2004 ? 2004 apex microtechnology corp.
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