19-5086; Rev 0; 12/09
MAX9943 Evaluation Kit
General Description
The MAX9943 evaluation kit (EV kit) is a fully assembled
and tested PCB that evaluates the MAX9943 high-
voltage, precision, low drift, and low-power op amp.
S
+6V to +38V Single Supply Range
S
±3V to ±19V Dual Supply Range
S
Fully Assembled and Tested
Features
S
Flexible Input and Output Configurations
Evaluates: MAX9943
Ordering Information
PART
MAX9943EVKIT+
TYPE
EV Kit
+Denotes
lead(Pb)-free and RoHS compliant.
Component List
DESIGNATION
C1, C2
QTY
2
DESCRIPTION
10FF
Q20%,
25V tantalum
capacitors (C size)
AVX TAJC106M025R
0.1FF
Q10%,
50V X7R ceramic
capacitors (0603)
Murata GRM188R71H104K
Not installed, capacitor (0603)
Multipurpose test points, black
3-pin headers
Multipurpose test points, white
1kI
Q5%
resistors (0603)
DESIGNATION
R3
R4
QTY
1
0
DESCRIPTION
0I
Q5%
resistor (0603)
Not installed, 1W through-hole
resistor
High-voltage, precision, low-
power op amp (6 TDFN-EP*)
Maxim MAX9943ATT+
Multipurpose test points, red
PCB: MAX9943 EVALUATION
KIT+
C3, C4
C5
GND
JU1, JU2
OUT, VIN-, VIN+
R1, R2
2
0
5
2
3
2
U1
VCC, VEE
—
*EP
= Exposed pad.
1
2
1
Component Suppliers
SUPPLIER
AVX Corporation
Murata Electronics North America, Inc.
PHONE
843-946-0238
770-436-1300
WEBSITE
www.avxcorp.com
www.murata-northamerica.com
Note:
Indicate that you are using the MAX9943 when contacting these component suppliers.
_______________________________________________________________
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.
MAX9943 Evaluation Kit
Evaluates: MAX9943
Quick Start
• MAX9943 EV kit
• +15V power supply (VCC)
• -15V power supply (VEE)
• Waveform generator
• Oscilloscope
The MAX9943 EV kit is fully assembled and tested.
Follow the steps below to verify board operation:
1)
2)
3)
4)
5)
9)
Connect the positive input of the oscilloscope to the
OUT test point.
Required Equipment
10) Connect the negative input of the oscilloscope to
the GND test point.
11) Enable the VCC and VEE power supplies.
12) Enable the waveform-generator output.
13) Verify that V
OUT
= 2 x V
VIN+
or a 6V
P-P
sine wave.
Procedure
Detailed Description of Hardware
The MAX9943 EV kit can operate with dual supplies from
Q3V
to
Q19V,
or with a single supply from +6V to +38V
with respect to ground. Appropriate bypass capacitors
are provided to the VCC and VEE power-supply inputs.
The EV kit provides jumpers JU1 and JU2 for flexible
input configurations. For noninverting-amplifier configu-
ration, place shunts on pins 1-2 of JU1 and pins 2-3 of
JU2. For inverting-amplifier configuration, place shunts
on pins 1-2 of JU2 and pins 2-3 of JU1. Table 1 summa-
rizes the functions of JU1 and JU2.
Power Supplies
Verify that all jumpers are in their default positions,
as shown in Table 1.
Set the VCC power-supply output to +15V. Disable
the output.
Set the VEE power-supply output to -15V. Disable
the output.
Set the waveform-generator output to 1kHz sine
wave, V
P-P
= +3V. Disable the output.
Connect the positive terminal of the VCC power
supply to the VCC test point. Connect the ground
terminal of the VCC power supply to the GND test
point.
Connect the negative terminal of the VEE power
supply to the VEE test point. Connect the ground
terminal of the VEE power supply to the GND test
point.
Connect the waveform-generator output to the VIN+
test point.
Connect the waveform-generator ground to the
GND test point.
Input and Output Configurations
6)
7)
8)
The EV kit provides the C5 and R3 footprints for optional
capacitive-load driving circuit. C5 simulates the capaci-
tive load while R3 acts as the isolation resistor to improve
the op amp’s stability at higher capacitive loads. For
additional details, refer to the
Capacitive Load Stability
section in the MAX9943 IC data sheet.
Capacitive-Load Driving
Table 1. Jumper Descriptions (JU1, JU2)
CONFIGURATION
JUMPER
JU1
Noninverting
JU2
JU1
Inverting
JU2
*Default
position.
2
______________________________________________________________________________________
1-2
2-3*
2-3
SHUNT
POSITIONS
1-2*
DESCRIPTION
R2
V
OUT
=
1
+
x V
VIN
+
R1
where V
VIN+
is the voltage applied at the VIN+ test point.
V
OUT
=
–
R2
x V
VIN
-
R1
where V
VIN-
is the voltage applied at the VIN- test point.
MAX9943 Evaluation Kit
Evaluates: MAX9943
1.0’’
1.0’’
Figure 2. MAX9943 EV Kit Component Placement Guide—
Component Side
Figure 3. MAX9943 EV Kit PCB Layout—Component Side
1.0’’
Figure 4. MAX9943 EV Kit PCB Layout—Solder Side
Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied.
Maxim reserves the right to change the circuitry and specifications without notice at any time.
4
©
Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600
2009 Maxim Integrated Products
Maxim is a registered trademark of Maxim Integrated Products, Inc.
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
