Apex Digital EK80 User manual

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All rights reserved
Jan 2022
EK80U Rev A
Evaluation Kit
EK80
APPLICABLE PARTS (SOLD SEPARATELY)
• CD64GT (High Voltage Power Booster)
INTRODUCTION
This easy-to-use kit provides a platform for the evaluation of the CD64 modular high voltage power
booster. This kit can be used to analyze the standalone configuration of the CD64.
Construction will involve both surface mounting, and holes are provided to mount standard banana and
BNC connectors for I/O. See Apex Microtechnology Accessories Information data sheet for selection of flat-
backed heatsinks and thermal washers for this package.
Figure 1: Schematic
-VS
+VS
GND
DUT1
CD64GT
A
B
MTG. HOLES
IN-B
IN-A
IN-A
GND
IN-B
GND
OUTPUT_A
GND
OUTPUT_A
OUTPUT_B
GND
OUTPUT_B
DUT1
RISO2
RISO1
P1
P2
P3
RT1
51
5%
RT2
51
5%
TP1-1
RG1
82
RG2
82
TP2-1
TP3-1
TP4-1
C1
1ʅF
C2
1ʅF
C3
1ʅF
C4
1ʅF
C6
0.1ʅF
C5
0.1ʅF
C7
0.1ʅF
C8
C9
220ʅF
C10
220 ʅ F
TP5-1
TP6-1
TP7-1
TP11-1
TP12-1
TP13-1
TP9-1
21
D1
21
D2
21
D3
21
D4
21
D5
21
D6
P4
P5
P6
P7
P9
P10
TP8-1
SB1
TP14-1
TP10-1
12
RCL1
0.2
1
2
RCL2
0.2
1
2RISO2
0.3
12
RISO1
0.3
P8
CC1
3.3pF
CC2
3.3pF
SB2
1
23
4
HS1
12
HS2
12
HS3
+VS
-VS
AGND
+VB
-VB
+VB
-VB
AGND
AGND
AGND
AGND
+VB
-VB
AGND
+VS
-VS
+VS -VS
-VS
+VS
AGND
AGND
-VS
AGND
AGND
-VS
+VS
+VS
AGND
AGND
+VS
-VS
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
TP
BPLT
+VB_A
CC_A
OUT_A
+VS_A
+VS_A
N/C
CL_A
CL_A
N/C
-VS_B
-VS_B
N/C
N/C
N/C
N/C
GAIN_B
IN_B
-VB_B
-VB_A
IN_A
GAIN_A
N/C
N/C
N/C
N/C
-VS_A
-VS_A
N/C
CL_B
CL_B
N/C
+VS_B
+VS_B
OUT_B
CC_B
+VB_B
N/C
N/C
N/C
N/C
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
+VBOOST
+VSUPPLY
GND
GND
-VSUPPLY
-VBOOST
1
2
3
4
5
6
-VBOOST
+VBOOST
GND
+VS
-VS
0.1ʅF

EK80
2 EK80U Rev A
Figure 2: PCB Layout
DUT1
1
20 21
42

EK80
EK80U Rev A 3
PARTS LIST
Reference Manufacturer Part # Description QTY
Printed Circuit Board
EVAL98 EVAL98 Printed Circuit Board 1
Resistors
RT1, RT2 PR03000205109JAC00 51.1Ω Input Termination Resistor 2
RCL1, RCL2 MOSX3CT521A0R2J 0.2Ω, Current Limit Resistor 2
RISO1, RISO2 MP930-0.30-1% 0.3Ω, TO-220, Load Isolation Resistor 2
RG1, RG2 CFR-50JB-52-82R 82Ω, Gain Set Resistor 2
Capacitors
C1-C4 1825B105K201N 1 µF 200V, 1825, Bypass Capacitor 4
C5-C8 C1210V104KCRACTU 0.1 µF, 500V, 1210, Bypass Capacitor 4
C9, C10 LGU2D221MELY 220 µF, 200V, Bypass Capacitor 2
CC1, CC2 C317C339D2G5TA 3.3pF, 250V, C0G/NP0, 0603, Compen-
sation Capacitor 2
Diodes
D1-D4 MUR420RLG Diode, Rectifier, 200V, 1A, Output Pro-
tection Diodes 4
D5, D6 MUR140RLG Diode, Fast Recovery, 400V, 1A, Power
Supply Sequencing Diodes 2
Hardware
P1-P7 571-0100 Test Sockets, Banana Jacks 7
P8 1985234 6 position, 3.5mm spacing, Terminal
Block for Boost Supplies 1
P9, P10 5226990-6 BNC Connector, Signal Input Connector 2
S703-93-130-47-052100 Pin Receptacles, MS11, Strip of 30 2
TP1-14 5001 Test Point 14
HS1 HS40 HS40, Heatsink 1
91772A106
Pan Head Screws 4-40
Thread, 1/4” Long, to fas-
ten DUT to heatsink
4
60SPG00001 Space Grommet, to fasten PCB to heat-
sink 4
94997A350 #8 1” Screws, to fasten PCB to heatsink 4
RCL - fasteners 90272A107 4-40, .31”, to fasten TO-220 resistors to
heatsinks 2
RCL - fasteners 96537A120 4-40, Stainless Steel Nut 2
HS2, HS3 HS23 TO220, Heatsink 2

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Figure 3: Assembly

EK80
EK80U Rev A 5
BEFORE YOU GET STARTED
• All Apex Microtechnology amplifiers should be handled using proper ESD precautions.
• Always use the heat sink 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 operations levels allowed in the device data sheet.
• Check for oscillations.
• Please refer to Application Note, AN01 for general operating conditions.
ASSEMBLY INSTRUCTIONS
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 TOP SIDE or the BOTTOM SIDE. The
component side has the designators printed on that side. Unless otherwise specified, install components
on the TOP SIDE. The majority of components are installed on the TOP SIDE.
2. A pin receptacle is supplied with this evaluation kit. Break it into strips 20 and 22 pins long. Two strip seg-
ments can be installed end on end if necessary. Insert the carrier strip through the BOTTOM SIDE and sol-
der the cage jacks on the TOP SIDE. Once the cage jacks are soldered, remove the carrier strip, leaving
only cage jacks soldered on the board.
3. Install SMT components first. C1-C8 are all surface mount X7R capacitors used for power supply bypass-
ing, particularly for higher frequencies.
4. The next components to solder are all through hole diodes and resistors in the desired circuit configura-
tion, for the exception of the larger TO-220 package resistors, RISO1 and RISO2.
5. After the smaller through hole circuit components have been installed, this is a good opportunity to
install the test points, TP1-TP14.
6. The next components to solder on are the banana jack connectors, P1-P7.
7. Install the BNC connectors, P9 and P10.
8. Install the six-pin terminal block connector P8.
9. Install the large electrolytic capacitors, C9 and C10. Be sure to verify the proper polarity when installing.
10. Using the provided hardware, attach HS2 and HS3 to RISO1 and RISO2. These assemblies will be installed
next on to the board by soldering the resistor leads. Ensure that the resistor leads do not short against
the heatsinks. Adding thermal grease between the resistors if available can improve the power dissipa-
tion of these components.
11. Install the standoffs on the corners of the PCB. The screws go in through the TOP SIDE and should allow
the EK to hold the heatsink above the workstation surface.
12. On the BOTTOM SIDE, install the 4 grommets which will support the heatsink on the PCB.
13. Install a CD64 onto HS1 using the provided hardware. Adding thermal grease between the resistors if
available can improve the power dissipation of these components.
14. Plug in the CD64 and heatsink assembly into the BOTTOM SIDE of the PCB. Be sure to check the orienta-
tion of the part while installing since the part has asymmetrical pins. Use the provided hardware to screw
in the heatsink into the grommets.

EK80
6 EK80U Rev A
SUGGESTED EVALUATION CIRCUIT DESCRIPTION
The circuit is configured as a single input power amplifier. This topology allows the user to evaluate each
channel of the CD64 independently as a single ended driver or simultaneously operating in bridge mode. The
circuit will accept a single ended input signal applied to either input. The voltage gain is approximately 25
Volts per Volt with the component values specified in the table. Please refer to the schematic diagram.
TEST ASSEMBLY
EQUIPMENT NEEDED
1. Power Supplies
2. Function Generator
3. Oscilloscope
4. Heatsink
TEST SETUP
1. Connect the power supply to +VS and -VS ports, P1 and P3. Refer to product datasheet for voltage specifi-
cations. If boost supplies are to be used connect them to the proper slots on P8.
2. Connect the BNC cable from the function generator to either P9 or P10.
3. Do not insert the amplifier and heatsink assembly. Remove if inserted.
4. Power on the input signal and power supplies.
5. Measure voltages on all pins on the TOP SIDE to ensure that there is not short and to check that all the
pins read correct voltages.
6. Mount the amplifier and heatsink assembly on the PC board. If connecting a resistor load, short RISO1
and/or RISO2 with a bus wire. If a piezo load is connected, connect a resistor for RISO1 and RISO2.
7. Input and output waveforms can be checked on an oscilloscope by connecting it to the test points
mounted on the board.
8. Begin the test with minimum values of input and supply voltages.

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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.s[email protected]. 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
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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
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information contained herein and gives consent for copies to be made of the information only for use within your organization with respect to Apex
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