19-5045; Rev 0; 11/09
MAX4940 Evaluation Kit/Master Board
General Description
The MAX4940 evaluation kit (EV kit) provides a proven
design to evaluate the MAX4940 quad, high-voltage
pulse driver. The MAX4940 EV kit can be driven by the
MAX4940 Master Board, a signal generator based on the
Altera EPM1270F256C5N MAX II CPLD.
The MAX4940 EV kit comes with a MAX4940CTN+
installed. Contact the factory for free samples of the pin-
compatible MAX4940ACTN+ to evaluate this device.
For complete evaluation, including test waveform gen-
eration, order the MAX4940MB+ together with the
MAX4940EVKIT+.
PART
MAX4940EVKIT+
S
3.5mm_Scope_Probe_Jacks
S
Proven_PCB_Layout
S
Fully_Assembled_and_Tested
S
Stand-Alone_Waveform_Generation_(MAX4940MB+)
Features
Evaluate: MAX4940/MAX4940A
Ordering Information
TYPE
EV Kit
MAX4940MB+
Master Board (signal generator)
+Denotes
lead(Pb)-free and RoHS compliant.
Component Lists
MAX4940 EV Kit
DESIGNATION
COUT1–COUT4
QTY
4
DESCRIPTION
220pF
Q10%,
100V X7R ceramic
capacitors (0402)
Murata GRM155R72A221K
3300pF
Q10%,
100V X7R ceram-
ic capacitors (0402)
Murata GRM155R72A332K
0.1FF
Q10%,
100V X7R ceramic
capacitors (0603)
Murata GRM188R72A104K
0.1FF
Q10%,
16V X7R ceramic
capacitors (0402)
Murata GRM155R71C104K
10FF
Q10%,
25V X7R ceramic
capacitors (1206)
Murata GRM31CR71E106K
10FF
Q20%,
160V aluminum elec-
trolytic capacitors (G13)
Panasonic EEV-EB2C100Q
DESIGNATION
H1
HOUT1A,
HOUT1B,
HOUT2A,
HOUT2B, JU1–
JU13
ROUT1–ROUT4
T1A, T1B, T2A,
T2B
U1
—
—
*EP
= Exposed pad.
QTY
1
DESCRIPTION
Dual-row, right-angle header
(2 x 8)
C1–C8
8
17
2-pin headers
C9–C15
7
4
4
1kI
Q5%,
1W resistors (2512)
Panasonic ERJ-1TYJ102U
Scope probe jacks, 3.5mm
Quad high-voltage pulse driver
(56 TQFN-EP*)
Maxim MAX4940CTN+
Shunts
PCB: MAX4940 EVALUATION
KIT+
C16–C19
4
1
11
1
C20, C21, C22
3
C23–C26
4
________________________________________________________________ _Maxim
Integrated Products_
_ 1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
MAX4940 Evaluation Kit/Master Board
Evaluate: MAX4940/MAX4940A
Component Lists (continued)
DESIGNATION
C8
QTY
1
DESCRIPTION
560pF
Q5%,
50V C0G ceramic
capacitor (0603)
TDK C1608C0G1H561J
4.7FF
Q10%,
6.3V X5R ceramic
capacitor (0603)
TDK C1608X5R0J475K
0.01FF
Q10%,
50V X7R ceramic
capacitors (0603)
TDK C1608X7R1H103K
0.1FF
Q10%,
50V X7R ceramic
capacitors (0603)
TDK C1608X7R1H104K
10pF
Q5%,
50V C0G ceramic
capacitor (0603)
TDK C1608C0G1H100J
1FF
Q10%,
10V X7R ceramic
capacitors (0603)
TDK C1608X7R1A105K
Ferrite bead (0603)
TDK MMZ1608R301A
Dual-row, right-angle header
(2 x 8)
10-pin header (2 x 5)
MAX4940 Master Board
DESIGNATION
JU1
LED0–LED16
RLED0–RLED16
R13
R14, R16, R19,
R20, RSW1–
RSW7
R15
R17
SW1–SW7
TP0–TP4
QTY
0
17
17
1
11
0
1
7
0
DESCRIPTION
Not installed, 2-pin header
Red LEDs (0805)
200I
Q5%
resistors (0603)
1kI
Q5%
resistor (0603)
10kI
Q5%
resistors (0603)
Not installed, resistor (0603)
33I
Q5%
resistor (0603)
Momentary pushbutton switch-
es, normally open
Not installed, multipurpose test
points
CPLD, 1270 logic elements
(256 FBGA)
Altera EPM1270F256C5N
3.3V, 1000mA LDO regulator
(16 TSSOP-EP*)
Maxim MAX8869EUE33+
66MHz crystal oscillator
(7.5mm x 5mm)
PCB: MAX4940 MASTER
BOARD+
C14
C15, C26, C27,
C34, C35,
CSW1–CSW7
C25, C31, C32,
C33, C36–C39,
C55–C59
C69
1
12
13
1
U1
1
C201, C202
2
U2
1
FB1
H1
J2
1
1
1
Y1
—
*EP
= Exposed pad.
1
1
Component Suppliers
SUPPLIER
Altera Corp.
Murata Electronics North America, Inc.
Panasonic Corp.
TDK Corp.
PHONE
800-800-3753
770-436-1300
800-344-2112
847-803-6100
WEBSITE
www.altera.com
www.murata-northamerica.com
www.panasonic.com
www.component.tdk.com
Note:
Indicate that you are using the MAX4940 when contacting these component suppliers.
2_ _ _______________________________________________________________________________________
MAX4940 Evaluation Kit/Master Board
Evaluate: MAX4940/MAX4940A
Quick Start
•
•
•
•
•
•
MAX4940 EV kit
8)
9)
Connect the +100V DC power supply to VPP1 on
the MAX4940 EV kit.
Connect the -100V DC power supply to VNN1 on the
MAX4940 EV kit.
Required Equipment
MAX4940 Master Board (or equivalent signal
generator)
+5V DC power supply
Q12V
DC dual-tracking power supplies
Q100V
DC at 20mA high-voltage, dual-tracking
power supplies
Recommended: Oscilloscope to view high-voltage
outputs
10) Enable the +5V DC power supply.
11) Enable the
Q12V
DC power supplies.
12) Enable the
Q100V
DC power supplies.
13) Set the MAX4940 Master Board to generate wave-
form A by pressing SW2 until LED2 is lit.
14) Verify that the oscilloscope shows expected high-
voltage outputs from waveform A (OUT1A).
15) Set the MAX4940 Master Board to generate wave-
form B by pressing SW2 until LED3 is lit.
16) Verify that the oscilloscope shows expected high-
voltage outputs from waveform B (OUT1A).
17) Set the MAX4940 Master Board to generate wave-
form C by pressing SW2 until LED4 is lit.
18) Verify that the oscilloscope shows expected high-
voltage outputs from waveform C (OUT1A).
19) Set the MAX4940 Master Board to generate wave-
form D by pressing SW2 until LED5 is lit.
20) Verify that the oscilloscope shows expected high-
voltage outputs from waveform D (OUT1A).
21) Reduce the VPP/VNN supplies to
Q5V
DC.
22) Set the MAX4940 Master Board to generate wave-
form E by pressing SW2 until LED6 is lit.
23) Verify that the oscilloscope shows expected outputs
from waveform E (OUT1A).
24) Repeat steps 13–23 to view waveforms OUT1B,
OUT2A, and OUT2B.
The MAX4940 EV kit is fully assembled and tested.
Follow the steps below to verify board operation:
1)
Procedure
Verify that the jumpers are in their default positions,
as shown in Table 1 with one exception (JU1 must
be open).
Connect the MAX4940 EV kit to the MAX4940
Master Board signal generator.
Connect an oscilloscope probe to T1A on the
MAX4940 EV kit.
Connect all power-supply ground returns to GND.
Connect the +5V DC power supply to the IN +5V
pad on the MAX4940 Master Board. This powers the
on-board MAX8869 +3.3V linear regulator, which
drives the CPLD and the MAX4940’s VDD supply.
Connect the +12V DC power supply to VCC on the
MAX4940 EV kit.
Connect the -12V DC power supply to VEE on the
MAX4940 EV kit.
2)
3)
4)
5)
6)
7)
________________________________________________________________________________________ _ 3
MAX4940 Evaluation Kit/Master Board
Evaluate: MAX4940/MAX4940A
Figure 1. MAX4940 EV Kit System Operation Guide
4_ _ _______________________________________________________________________________________
MAX4940 Evaluation Kit/Master Board
Evaluate: MAX4940/MAX4940A
Detailed Description of Hardware
The MAX4940 EV kit provides a proven layout for the
MAX4940. Capacitors C1–C8 are the “flying caps” for
the MAX4940’s internal charge pump. Jumpers JU1–JU5
are used to drive EN and the clamp inputs when the EV
kit board is used without the master board. On-board
dummy-load circuits are enabled by jumpers JU10–JU13.
MAX4940 EV Kit
Figure 2. MAX4940 Jumper Guide
Table_1._MAX4940_EV_Kit_Jumper_Descriptions_(JU1–JU13)
JUMPER
SIGNAL
SHUNT_POSITION
1-2*
JU1
EN
Open
1-2
JU2
CLP1A
Open*
1-2
JU3
CLP2A
Open*
DESCRIPTION
Enable input EN connects to VDD, enabling the high-voltage outputs for nor-
mal operation
Enable input EN is not connected to VDD (required when driven with
MAX4940 Master Board, or other external signal source)
Clamp input CLP1A connects to VDD, enabling the always-on active clamp
feature (MAX4940 only)
CLP1A is not connected to VDD (required when driven with MAX4940 Master
Board, or other external signal source)
Clamp input CLP2A connects to VDD, enabling the always-on active clamp
feature (MAX4940 only)
CLP2A is not connected to VDD (required when driven with MAX4940 Master
Board, or other external signal source)
________________________________________________________________________________________ _ 5
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