19-5967; Rev 0; 7/11
MAX9644/MAX9645/MAX9646 Evaluation Kits
Evaluate: MAX9644/MAX9645/MAX9646
General Description
The MAX9644/MAX9645/MAX9646 evaluation kits (EV kits)
are fully assembled and tested PCBs that evaluate the
MAX9644/MAX9645/MAX9646 single comparators. All EV
kits have a common internal reference voltage of +0.2V,
operate from a +1V to +5.5V power supply (VCC), and
have a common -0.3V to +5.5V input voltage (IN) range.
The EV kits are configured to evaluate both the 4-bump
UCSPK (installed) and an optional 5-pin SOT23 (to do
so, request a free MAX9644/MAX9645/MAX9646 SOT23
IC sample when ordering the EV kits).
S
-0.3V to +5.5V Input Voltage Range
S
+1V to +5.5V VCC Range
S
+0.2V Internal Reference Voltage
S
Evaluates 4-Bump UCSP and Optional 5-Pin
SOT23 Packages
S
Proven PCB Layout
S
Fully Assembled and Tested
Ordering Information
appears at end of data sheet.
Features
Component List
DESIGNATION
QTY
DESCRIPTION
0.1µF
Q10%,
25V X7R ceramic
capacitors (0603)
Murata GRM188R71E104K
TDK C1608X7R1E104K
3-pin header
100kI
Q5%
resistors (0603)
See the
EV Kit-Specific
Component List
DESIGNATION
QTY
DESCRIPTION
Not installed, single comparator
(5 SOT23)
Maxim MAX9644/MAX9645/
MAX9646
Shunts
PCB: MAX9644/5/6 EVALUATION
KIT
C1, C2
2
U2
0
JU1
R1, R2
U1
1
2
1
—
—
1
1
EV Kit-Specific Component List
PART
MAX9644EVKIT#
DESIGNATION
DESCRIPTION
Open-drain noninverting single comparator (4 UCSP)
Maxim MAX9644EBS+G45
(Top Mark: AGL)
U1
Open-drain inverting single comparator (4 UCSP)
Maxim MAX9645EBS+G45
(Top Mark: AGM)
Push-pull noninverting single comparator (4 UCSP)
Maxim MAX9646EBS+G45
(Top Mark: AGN)
MAX9645EVKIT#
MAX9646EVKIT#
Component Suppliers
SUPPLIER
Murata Electronics North America, Inc.
TDK Corp.
PHONE
770-436-1300
847-803-6100
WEBSITE
www.murata-northamerica.com
www.component.tdk.com
Note:
Indicate that you are using the MAX9644, MAX9645, or MAX9646 when contacting these component suppliers.
UCSP is a trademark of Maxim Integrated Products, Inc.
_________________________________________________________________
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.
MAX9644/MAX9645/MAX9646 Evaluation Kits
Evaluate: MAX9644/MAX9645/MAX9646
Quick Start
•
MAX9644, MAX9645, or MAX9646 EV kit
•
Two -5V DC power supplies (VCC, IN)
•
Optional third +5V DC power supply (EXT for
MAX9644/MAX9645 only)
•
Digital multimeter (DMM)
The EV kits are fully assembled and tested. Follow the
steps below to verify board operation.
Caution: Do not
turn on the power supply until all connections are
completed.
1) Verify that a shunt is installed on pins 1-2 of jumper JU1.
2) Connect the positive terminal of a DC power supply to
the VCC PCB pad and the ground terminal to the GND
PCB pad.
3) Connect the positive terminal of a DC power supply to
the IN PCB pad and the ground terminal to the GND
PCB pad.
4) Connect the positive terminal of a DC power supply to
the EXT PCB pad and the ground terminal to the GND
PCB pad. (MAX9644/MAX9645 only)
5) Turn on the VCC power supply and set it to the
desired level.
6) Turn on the IN power supply and set it to the desired
level.
7) Turn on the EXT power supply and set it to the desired
level (MAX9644/MAX9645 only).
8) Monitor the output using a DMM at the OUT1 PCB
pad, and study its response to varying voltage at IN.
Detailed Description of Hardware
The MAX9644/MAX9645/MAX9646 EV kits are fully
assembled and tested PCBs that evaluate the MAX9644/
MAX9645/MAX9646 single comparators. The MAX9644
is an open-drain noninverting single comparator, the
MAX9645 is an open-drain inverting single compara-
tor, and the MAX9646 is a push-pull noninverting single
comparator. All EV kits have an internal reference voltage
of +0.2V, require VCC between +1V to +5.5V to operate,
and have a common -0.3 to +5.5V input voltage (IN) range.
The VCC PCB pad on the EV kits is used to supply a +1V
to +5.5V VCC supply to the IC.
Recommended Equipment
Procedure
VCC Supply Selection
The EV kits can evaluate both 4-bump UCSP (U1) and
5-pin SOT23 (U2) packages. The EV kit offers the option
to power up U1 or U2 separately though configuration of
jumper JU1. See Table 1 for power-up options.
The EXT PCB pad on the EV kits can be used as an
external source to pull the outputs high through resistors
R1 or R2 when open-drain versions of the parts are used.
EXT PCB Pad
Table 1. Jumper JU1 Functions
SHUNT
POSITION
1-2*
2-3
*Default
position.
VCC/REF PAD
Powers U1 (UCSP) sub circuit
Powers optional U2 (SOT23) sub circuit
_________________________________________________________________
Maxim Integrated Products
2
MAX9644/MAX9645/MAX9646 Evaluation Kits
Evaluate: MAX9644/MAX9645/MAX9646
Figure 1. MAX9644 EV Kit Schematic
_________________________________________________________________
Maxim Integrated Products
3
MAX9644/MAX9645/MAX9646 Evaluation Kits
Evaluate: MAX9644/MAX9645/MAX9646
Figure 2. MAX9645 EV Kit Schematic
_________________________________________________________________
Maxim Integrated Products
4
MAX9644/MAX9645/MAX9646 Evaluation Kits
Evaluate: MAX9644/MAX9645/MAX9646
Figure 3. MAX9646 EV Kit Schematic
_________________________________________________________________
Maxim Integrated Products
5
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