EK57

EK57 Evaluation Kit APPLICABLE PARTS (SOLD SEPARATELY) • • • MP108FD MP111FD MP118FD (See EK57 - Addendum) INTRODUCTION This easy-to-use kit provides a platform for the evaluation of linear power amplifiers circuits using the MP108FD & MP111FD pin out. With ample bread boarding areas it is flexible enough to analyze a multitude of standard or proprietary circuit configurations. Critical connections for power supply bypassing are prewired. 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 soldering 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. Figure 1: Schematic Diagram PCB AMPLIFIER TERMINALS PCB WIRING TERMINALS TERMINAL STRIP TERMINALS ACCESSORY TERMINALS C1 1 + C2 C5 TS1 SPARE OUT OUT OUT 2 1 2 3 4 5 6 7 8 9 10 11 12 TP BPLT GND +V B CC1 CC2 NC +V B NC NC 3 13 14 15 16 VIEW FROM PCB COMPONENT SIDE 4 +V S +V S +V S +V S +V B -IN +IN GND NC -V B NC +CL -CL NC -V B 34 33 32 31 30 29 28 27 26 25 NC NC 24 -V S -V S -V S 23 22 21 20 19 18 OUT OUT OUT 17 OUT GND -V S RLIM 5 -V B C6 C3 + C4 www.apexanalog.com © Apex Microtechnology Inc. All rights reserved Jan 2023 EK57U Rev H EK57 Figure 2: PCB TOP VIEW COMPONENT SIDE MICROTECHNOLOGY 1 +Vs GND IC1 SPARE SPARE EVAL57 R BANANA JACK C2 DUT ON BOTTOM +Vb Cc 16 +Vs BANANA JACK + +Vb 1 2 BANANA JACK C5 OUT C1 34 Rlim C4 4.890 REF. GND C6 HS28 BANANA JACK 3 17 5 -Vs -Vb GND OUT -Vs -Vb 4 BNC INPUT SIG 5 C3 + TS1 GND 6.250 REF. BOTTOM VIEW DUT SIDE 2 EK57U Rev H EK57 PARTS LIST Reference Manufacturer Part # Description C1,4,5,6 TS1 C2,3 RLIM* RLIM* HS28 HS31 S703-93-130-47-052100 EVAL57 60SPG00004 1825B105K201N TS02 KMH200VN681M25MX40T2 PBV-R050-1 PBV-R100-1 Heat Sink Heat Sink Strip of 30 cage jacks PC Board Spacer Grommets/ Micro Plastics Cap, 1uF, 200V, 10%-R Terminal Strip 680uF 200V/ United Chemi-Con 0.050 Ω Resistor 0.100 Ω Resistor QTY 1 1 2 1 4 4 1 2 1 1 *Chosen per directions. BEFORE YOU GET STARTED • • • • • • All Apex Microtechnology amplifiers 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. For instructions adapting EK57 for MP118 see EK57 addendum. Always use the heatsink provided in this kit and proper power supply bypassing. Please refer to the Application Note, AN01, for general operating considerations. ASSEMBLY During assembly refer to Figure 2 and the data sheet for the product being evaluated. 1. Note that each side of the circuit board is identified 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 flow into the cage jacks. 3. Pull out the plastic carrier strip from the soldered cage jacks. Without this step, the amplifier will not properly seat! The unsoldered cage jacks will be removed with the carrier strip. 4. Solder the surface mount capacitors at C1, C4, C5, and C6 on the “component side” of the board. 5. 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. 6. Mount the HS28 heat sink to the PCB and solder the mounting posts of the heat sink. 7. 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. 8. 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 fill the holes with solder. 9. 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 fill the mounting holes with solder. EK57U Rev H 3 EK57 10. Mount and wire the banana jacks and BNC connector (neither supplied) to the PCB pads at locations 1-5 as needed or desired. 11. Mount other components to complete your application circuit using the pads and holes provided. 12. From the “DUT side” of the PCB snap the spacer- grommets into the holes at the four corners of the PCB. Notice that the holes are slightly rectangular. Match the spacer-grommet's long and short sides to the holes in the PCB. 13. Apply a thin, uniform layer of thermal grease to the amplifier; a straight edge may be useful here. Position the amplifier over the mounting holes in the heatsink. Firmly push the amplifier onto the heatsink while slightly rotating the amplifier back and forth, ending with the mounting holes of the amplifier over the mounting holes in the heatsink. 14. Attach the amplifier to the heatsink with 4-40x½’ 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 4-40x¼’ machine screws to mount the amplifier to the heatsink. Do not over-tighten the spacers or screws as this provides no thermal benefit and may break the hardware. 15. Place the PCB assembly on the heatsink/amplifier assembly so that the hex spacers come through the aligning holes near the corners of the amplifier location in the PCB. Carefully lower the PCB assembly until the pins of the amplifier engage the cage jacks. Alternatively, sight through the aligning holes in the PCB and match-up the PCB to the screws used to mount the amplifier. In either case be sure the pins of the amplifier are engaged with the cage jacks, and then continue pushing the PCB Assembly in the area between the amplifier’s 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. 16. Use #8 X 1" sheet metal screws (not provided) to mount the PCB to the heat sink at the four spacer-grommets. 17. 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 flat. 18. Hook up power and signals as necessary. The amplifier is now ready for testing. 4 EK57U Rev H EK57 Figure 3: Assembly HS28 HEATSINK SURFACE MOUNT CAPACITORS TERMINAL STRIP CAGE JACKS SPACER GROMMET ELECTROLYTIC CAPACITOR PC BOARD NO. 4 MOUNTING HARDWARE ACCESS HOLES CURRENT LIMITING SENSE RESISTOR 4-40 x 1/4 SCREWS DEVICE UNDER TEST (DUT) ALTERNATE MOUNTING HARDWARE USING HEX SPACERS HS31 HEATSINK NO. 8 or 10 x 1.0 SHEET METAL SCREWS NEED TECHNICAL HELP? CONTACT APEX SUPPORT! For all Apex Microtechnology product questions and inquiries, call toll free 800-546-2739 in North America. For inquiries via email, please contact apex.support@apexanalog.com. International customers can also request support by contacting their local Apex Microtechnology Sales Representative. To find the one nearest to you, go to www.apexanalog.com IMPORTANT NOTICE Apex Microtechnology, Inc. has made every effort to insure the accuracy of the content contained in this document. However, the information is subject to change without notice and is provided "AS IS" without warranty of any kind (expressed or implied). Apex Microtechnology reserves the right to make changes without further notice to any specifications or products mentioned herein to improve reliability. This document is the property of Apex Microtechnology and by furnishing this information, Apex Microtechnology grants no license, expressed or implied under any patents, mask work rights, copyrights, trademarks, trade secrets or other intellectual property rights. Apex Microtechnology owns the copyrights associated with the information contained herein and gives consent for copies to be made of the information only for use within your organization with respect to Apex Microtechnology integrated circuits or other products of Apex Microtechnology. This consent does not extend to other copying such as copying for general distribution, advertising or promotional purposes, or for creating any work for resale. APEX MICROTECHNOLOGY PRODUCTS ARE NOT DESIGNED, AUTHORIZED OR WARRANTED TO BE SUITABLE FOR USE IN PRODUCTS USED FOR LIFE SUPPORT, AUTOMOTIVE SAFETY, SECURITY DEVICES, OR OTHER CRITICAL APPLICATIONS. PRODUCTS IN SUCH APPLICATIONS ARE UNDERSTOOD TO BE FULLY AT THE CUSTOMER OR THE CUSTOMER’S RISK. Apex Microtechnology, Apex and Apex Precision Power are trademarks of Apex Microtechnology, Inc. All other corporate names noted herein may be trademarks of their respective holders. EK57U Rev H 5