EK60

EK60 EK60 EK60 PA78EU Evaluation Kit for PA78EU Pin-Out INTRODUCTION The EK60 evaluation kit is designed to provide a convenient way to breadboard design ideas for the PA78EU power operational amplifiers. The EVAL60 evaluation board is pre-wired for all required and recommended external components including the ones for power supply bypassing, compensation and current limiting. The EVAL60 also includes a breadboard area for constructing your application circuit with provisions for a preamplifier to drive the PA78 inputs. PARTS LIST Apex Part # HS27 EVAL60 TW12 OX7R105KWN 140-500N5-330J 146510CJ MS02 MS11 Description Heatsink, Apex PC Board, Apex Thermal Washer, Apex 1 uF Cap 3530B105K501N Novacap, 200V Breakdown 33pF Cap CDR-500N5-330KS XICON BNC Connector Socket Strip Socket Strip Quantity 1 1 1 Box 2 1 3 1 bag 1 bag EK60 SCHEMATIC CC1+ +VS NC RC- J- CC+ 1 PAXXEU -IN RC+ RIN 7 CC2OUT During assembly refer to Figure 1 and Figure 2. 1. Solder surface mount ceramic capacitors C4 and C5 on the DUT side of the board. 2. Add components for compensation (CC-, CC+, RC- and RC+) based on the closed loop gain and capacitive load. Add the current limit resistor (RLIM) based on load requirements (a minimum value of 4.5 ohms should be used to protect the PA78 internal output devices). It is recommended to use MSO2 sockets for the components for quick component changes on the board. Add 33pF capacitor (CT) between DUT pins 3 and 5. 3. While developing your application circuit you will probably want to use the mating socket strip. Use the MS11 socket strip for mounting the PA78 EU. Clip off the strip after the 12th position. Insert the strip into the circuit board on the DUT side and solder one pin on the reverse side. Check whether the mating socket strip is fully seated against the circuit board and then solder the remaining pins. Insert the amplifier fully into the socket strip, noting the pin 1 location on the amplifier and the circuit board. 4. For high power applications (see PA78EU datasheet for SOA considerations) mount the heat sink (HS27) in the outlined area on the circuit board. 5. If a heat sink is used, position the thermal washer behind the amplifier in such a way that the hole on the washer coincides with the hole on the tab and the heat sink. 6. For high slew rate performance connect the heat tab to a stable reference (see PA78U datasheet for details). 7. Install the banana jacks for P1 (+Vs), P2 (-Vs) and P3 (GND) as shown in figure 1 and 2. There are provisions for two extra banana jacks (P4 and P5) and can be used if desired for external connections. RN 6 CN -VS 5 NC IN- 2 9 CR1+ 8 +IN IN+ 2 C2 -VS 1 RC+ 11 CR2- 10 C1 J+ RC- +VS 12 ASSEMBLY 4 CT CF CC- 3 RF Jout 1 2 OUT 2 RLIM ILIM 1 CS RS -VS Jumper Cs to GND or -Vs for snubber if needed. PACKAGE TAB CONNECTED TO STABLE REFERENCE Breakdown voltage of C1 & C2 is 200V max. www.apexanalog.com EK60U Copyright © Apex Microtechnology, Inc. 2012 (All Rights Reserved) OCT 2012 1 EK60U REV5 EK60 Figure 1: PCB Layout TOP VIEW 4.00 5.50 BOTTOM VIEW 2 EK60U EK60 Figure 2: Assembled PCB 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 Microtechnolgy, Inc. All other corporate names noted herein may be trademarks of their respective holders. www.apexanalog.com EK60U Copyright © Apex Microtechnology, Inc. 2012 (All Rights Reserved) OCT 2012 EK60U REV53