MAX20326 Evaluation Kit
Evaluates: MAX20326
General Description
The MAX20326 evaluation kit (EV kit) provides a convenient
way to evaluate the MAX20326 dual precision bus accelerator
IC. The EV kit breaks out the pins of the IC to test points
enabling easy application and probing of signals.
Quick Start
Required Equipment
●
MAX20326 EV kit
●
Multimeter
●
I
2
C, MDIO, or 1-Wire master and slave devices
●
Oscilloscope
●
Power supply capable of supplying 1.4V to 5.5V
Features
●
Evaluates Communication Bus Acceleration
●
Operates with I
2
C, MDIO, and 1-Wire
®
Communication
●
Proven PCB Layout
●
Fully Assembled and Tested
Procedure
1)
2)
3)
4)
The EV kit is fully assembled and tested. Follow the steps
below to verify board operation:
Initiate read/write sequences between the master and
slave devices.
Use the oscilloscope to view the low-to-high transitions
of the communication line(s).
Verify that shunts are installed on jumpers JU5 and
JU6 (see
Table 1
for jumper settings).
Apply a bus voltage between 1.4V and 5.5V to V
CC
to
match the communication bus voltage.
Disconnect any pullup resistors on the communication
lines and connect the lines to TP1 (IOVCCA) and/or
TP3 (IOVCCB).
Initiate read/write sequences between the master and
slave devices.
Use the oscilloscope to view the low-to-high transitions
of either line. Note that the rising waveform accelerates
when the rising edge reaches approximately 0.5V.
EV Kit Contents
●
EV kit board containing a MAX20326 IC
Ordering Information
appears at end of data sheet.
5)
6)
7)
1-Wire is a registered trademark of Maxim Integrated Products, Inc.
319-100047; Rev 0; 7/17
MAX20326 Evaluation Kit
Evaluates: MAX20326
Detailed Description
Internal Pullup
The IC contains internal pullup resistors on the IOVCCA
and IOVCCB lines that eliminate the need for external
components.
The MAX20326 EV kit provides a convenient way to
evaluate the MAX20326 dual precision bus accelerator
IC. The IC functions as an accelerator for open-drain
communication lines, with two available channels. This
makes it ideal for I
2
C and 1-Wire buses under heavy
capacitive load.
Table 1. Default Jumper Settings
JUMPER
JU1
JU2
JU3
JU4
JU5
JU6
*Default position.
SHUNT POSITION
Installed
Not installed*
Installed
Not installed*
Installed
Not installed*
Installed
Not installed*
Installed*
Not installed
Installed*
Not installed
Connects R1 to VL
No connection to VL
Connects R2 to VL
No connection to VL
Connects R1 to VCC
No connection to VCC
Connects R2 to VCC
No connection to VCC
Connects TP1 to IOVCCA
No connection to IOVCCA
Connects TP3 to IOVCCB
No connection to IOVCCB
DESCRIPTION
Ordering Information
PART
MAX20326EVKIT#
#Denotes RoHS compliant.
TYPE
EV Kit
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Maxim Integrated
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2
MAX20326 Evaluation Kit
Evaluates: MAX20326
MAX20326 EV Kit Bill of Materials
DESIGNATOR
C1
DNI/DNP*
—
QTY
1
VALUE
1UF
MFG PART #
GRM188R60J105KA01
MFG.
MURATA
DESCRIPTION
CAPACITOR; SMT (0603); CERAMIC
CHIP; 1UF; 6.3V; TOL=10%;
MODEL=GRM SERIES; TG=-55 DEGC
TO +85 DEGC; TC=X5R;
PACKAGE OUTLINE 0805 NON-POLAR
CAPACITOR
CONNECTOR; MALE; THROUGH HOLE;
BREAKAWAY; STRAIGHT; 2PINS
PACKAGE OUTLINE 0805 RESISTOR
C2, C3
JU1-JU6
R1, R2
DNP
—
DNP
0
6
0
OPEN
N/A
N/A
SULLINS
N/A
PEC02SAAN PEC02SAAN
OPEN
N/A
SU1-SU6
—
6
STC02SYAN STC02SYAN
TEST POINT; JUMPER; STR; TOTAL
SULLINS
LENGTH=0.256IN; BLACK;
ELECTRONIC INSULATION=PBT
S CORP.
CONTACT=PHOSPHOR BRONZE;
COPPER PLATED TIN OVERALL
TEST POINT; PIN DIA=0.125IN; TOTAL
LENGTH=0.445IN; BOARD
HOLE=0.063IN; ORANGE; PHOSPHOR
BRONZE WIRE SILVER PLATE FINISH;
TEST POINT; PIN DIA=0.125IN; TOTAL
LENGTH=0.445IN; BOARD
HOLE=0.063IN; BLACK; PHOSPHOR
BRONZE WIRE SILVER PLATE FINISH;
TESTPOINT WITH 1.80MM HOLE DIA,
RED, MULTIPURPOSE;
EVKIT PART-IC; DUAL PRECISION BUS
ACCELERATOR; DFNFC 1.2MM X
1.2MM X 0.60MM
PCB: MAX20326
TP1, TP3
—
2
N/A
5013
KEYSTONE
TP2, TP4, TP6
—
3
N/A
5011
KEYSTONE
TP5, TP7
U1
—
—
—
—
2
1
1
N/A
—
5010
MAX20326
KEYSTONE
MAXIM
MAXIM
PCB: MAX20326 EVKIT
TOTAL
22
*Note:
DNI = Do not install; DNP = Do not procure.
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Maxim Integrated
│
3
2
VL
1
1
PEC02SAAN
2
JU1
1UF
PEC02SAAN
JU3
C1
2
VCC
PEC02SAAN
JU4
PEC02SAAN
1
2
2
GND
TP2
C2
OPEN
1
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VCC
MAX20326 Evaluation Kit
MAX20326 EV Kit Schematic
VCC
TP5
VCC
VCC
GND
TP6
JU2
VL
TP7
R1
PEC02SAAN
VCC
2
IOVCCA
GND
IOVCCB
4
3
2
1
VL
1
OPEN
JU5
MAX20326E
U1
JU6
R2
1
OPEN
PEC02SAAN
IOVCCA
TP1
TP3
IOVCCB
C3
OPEN
GND
TP4
Evaluates: MAX20326
Maxim Integrated
│
4
MAX20326 Evaluation Kit
Evaluates: MAX20326
MAX20326 EV Kit PCB Layout Diagrams
MAX20326 EV Kit Component Placement Guide—Top
Silkscreen
MAX20326 EV Kit PCB Layout—Top Layer
MAX20326 EV Kit PCB Layout—Bottom Layer
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