EK37

EK37 Evaluation Kit APPLICABLE PARTS (SOLD SEPARATELY) • MP104 Power Amplifier INTRODUCTION This easy to use kit provides a platform with good circuit board layout and grounding to evaluate MP104 Power Amplifier. With additional prototype area, it is flexible enough to analyze a multitude of standard or proprietary circuit configurations. All necessary components are provided with the kit. External connections to the evaluation kit can be made through the connectors at the edges of the circuit. The circuit provides a line termination of 50 Ω. Figure 1: EK37 Schematic D3 CBP2 1 CL_A 2 CL_A CBP1 S RN1 OUT_A2 OUT_B1 GNDA OUT_A OUT_B OUT_B2 TP4 CN1 RN2 CN2 GNDB RISO2 D2 +VS_B CBP4 X12 GNDA X1 CBP10 GNDB RLIM2 7 OUT_A 8 NC 9 NC 10 NC 11 NC MP104 12 NC 13 NC 18 X3 41 -VS_A CBP8 CTMP_A 40 RTMP_A TMP_A RINA IN_A RTA CBP7 FBK_A 35 34 NC +24V 33 32 GND NC 31 FBK_B -18V OUT_A +24V CBP6 28 NC 27 NC 26 S +VS_B IN_B 25 TEMP_B 24 CL_B 19 CL_B 20 CL_B -VS_B -VS_B GNDB -VS_B D4 www.apexanalog.com GNDA NC 30 NC 29 14 OUT_B 15 +V _B S 16 +V _B 17 42 39 TEMP_A IN_A 38 37 NC -18V 36 5 +V _A S 6 +V _A OUT_A1 TP3 -VS_A S D1 RISO1 -VS_A 3 CL_A 4 +V _A RLIM1 CBP3 GNDA +VS_A -VS_A © Apex Microtechnology Inc. All rights reserved OUT_B RT B RINB IN_B TMP_B RTMP_B 23 22 CTMP_B 21 X11 GNDB -VS_B CBP5 CBP9 April 2016 EK37U Rev A EK37 Figure 2: EVAL 76 PCB Layout 2 EK37U Rev A EK37 PARTS LIST Reference Manufacturer Part # Description CFR-50JB-52-160R 160 Ω, ½W QTY Resistors RINA, RINB 2 RTA, RTB PR03000205109JAC00 51 Ω, 3W, 5% 2 RN1, RN2 CMF5510K000FKEA 10 kΩ, 1/4W, 1% 2 RTMP_A, RTMP_B CMF5030K100FHEB 30.1 kΩ, 1/4W 2 RLIMA, RLIMB 15FR100E-ND 0.1 Ω, 5W, Metal 2 RISO1, RISO2 ERX-5SJ1R5 1.5 Ω, 5W, Metal Film 2 EVAL84 Printed Circuit Board 1 Printed Circuit Boards EVAL 84 Capacitors CN1, CN2 RDER72E472K1M1H03A Ceramic, 4.7nF, 200V 2 CBP1, CBP10 LGU2D221MELY Alum, 220uF, 200V 2 CBP3, CBP4 C5750X7R2E105K230KA Film, 1uf, 250V 2 CBP5, CBP6 C5750X7R2E105K230KA Film, 1uf, 250V 2 CBP7, CBP8 C5750X7R2E105K230KA Film, 1uf, 250V 2 MUR160RLG Rectifier, Ultra-fast 4 HS31 Heat Sink For Amplifier 1 MS11 Cage Jacks 42 146510CJ Bnc Connector, PC Mount 2 571-0100 Banana Jacks, PC Mount 17 91735A192 Screw, Panhead, #8 X 0.375” 4 60SPG00004 Spacer Grommets 4 2221 Standoff, Hex, #8 X 2.00” 4 92325A313 Screw, Panhead, #8 x 0.625” 4 90272A105 Screw, Panhead, #4 x 0.625” 4 SPC02SVJN-RC Jumper, Slip On 10 PRPC002SADN-RC Header, Connector 10 5001 Test Point, PC Mini 10 Diodes D1, D2, D3, D4 Hardware Miscellaneous EK37U Rev A 3 EK37 BEFORE YOU GET STARTED • • • • • • • All Apex amplifiers should be handled using proper ESD precautions. Always use the heat sink and thermal washers included in this kit. Always use adequate power supply bypassing. Do not change the connections while the circuit is powered Initially set all power supplies to the minimum operation levels allowed in the device data sheet. Check for oscillations. Please refer to Application note, AN01 for general operating conditions. ASSEMBLY During the assembly, please refer to the circuit schematics, assembly drawings, and the data sheet of the part being used on the evaluation kit. 1. Note that each side of the circuit board is identified as either the component side or the DUT side. The component side has the designators printed on that side. 2. All through hole components (except the cage jacks) are installed on the component side of the board and soldered on the DUT side. 3. 42 pin receptacles are supplied with this evaluation kit. Insert the carrier strip through the DUT side, and solder the cage jacks on the component side. Once the cage jacks are soldered, remove the carrier strip, leaving only cage jacks soldered on the board. 4. Install CBP3, CBP4, CBP5, CBP6, CBP7 and CBP8 on the component side of the board. 5. Install diodes, D1, D2, D3, D4 and capacitors CBP1, CBP10 on the component side of the board. Ensure that the orientation of the components match the circuit schematic drawing. 6. Next install all the smaller components on the board. This is done because it becomes difficult to install a smaller part on the board once all the larger components are installed. 7. Mount the BNC connector provided with the kit (146510CJ) and solder it to the board. Also mount the banana jacks on the board. Install other miscellaneous components like jumpers and test points to complete your application circuit. 8. 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 and match the spacer-grommets long and short sides to the holes in the PCB. 9. 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. 10. Use 4-40x¼’ machine screws to mount the amplifier to the heatsink. Do not over-tighten the screws as this provides no thermal benefit and may break the hardware. 11. 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 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. 12. Use #8 X 1" sheet metal screws to mount the PCB to the heat sink at the four spacer-grommets. 13. #8 hex stand offs (91841A009) are also provided with the kit. Install the # 8 x 0.375"screws (91735A190), provided with the kit, from the component side. Attach the standoffs to these screws on the corners of the board. Refer to the assembly drawings while installing the standoffs. 14. Connect the external connections via the BNC connector and terminal strip. Hook up power supply and signals as necessary. The amplifier is now ready for testing. 4 EK37U Rev A EK37 Figure 3: Top View 1 2 3 4 5 1. 2. 3. 4. 5. 4 X #8 X 0.375" SCREW 4 X #8 X 2.00” HEX STANDOFFS 4 X #4 X 0.187” SCREW 4 X SPACER GROMMETS 4 X #8 X 0.625” SCREW EK37U Rev A 5 EK37 Figure 4: Bottom View 6 EK37U Rev A EK37 TEST ASSEMBLY EQUIPMENT NEEDED 1. 2. 3. 4. Power supply Function Generator Oscilloscope Proper heat sinking system (if operating at high current) TEST SETUP Connect the positive power supply to banana jacks P8 and P17. Since the negative supply is grounded, connect the ground connection of the positive supply to jacks P9 and P16. Connect the auxiliary supply to jacks P3, P4 and P5. Connect the BNC cable from the function generator to the BNC connector IN_A and/or IN_B based on the required channel to be used. If using a reactive load, connect the RISO resistor to banana jack Out_A1/Out_B1. If using a resistive load, connect the load to banana jack Out_A2/Out_B2. Out_A2 and Out_B2 are shorted across the RISO resistor (refer figure 1). Refer to the amplifier datasheet for typical values of input voltage, frequency and supply voltage. Input and output waveforms can be checked on an Oscilloscope by connecting it to the test points mounted on the board. Begin the test with minimum values of input and supply voltage. Volt meters can be connected to banana jacks P6, P14 and P7, P15 to monitor the temperature of each channel pf the MP104. Note: For added precaution, power on the circuit with the amplifier removed. Check the voltage at each cage jack without the DUT, for correct voltage / signal at each respective pin. Once this is done, plug in the DUT and check for the correct signal TEST RESULTS: For the test, an 80nF capacitive load was used. The input is set to 1.5V, with a -200mV offset, and the output is 97.5V. The test results can be seen in figure 5. The input of the amplifier is shown in Yellow color and the output of the amplifier is shown in Blue color. The input of the amplifier is set with a fixed rising edge and falling edge slew rate. The output is 65 times that of the input. The output current flowing through the capacitor is shown by the magenta colored waveform. EK37U Rev A 7 EK37 Figure 5: Test Results 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. 8 EK37U Rev A