MAX22246CWEVKIT [MAXIM]
Broad Range of Data Transfer Rates (from DC to 200Mbps);
| 型号： | MAX22246CWEVKIT |
| 厂家： | 
MAXIM INTEGRATED PRODUCTS |
| 描述： | Broad Range of Data Transfer Rates (from DC to 200Mbps) |
| 文件： | 总11页 (文件大小：1213K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
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MAX22245/MAX22246 Evaluation Kits
Evaluate: MAX22245/MAX22246
General Description
Features
The MAX22245/MAX22246 evaluation kits (EV kits)
provide a proven design to evaluate the MAX22245
and MAX22246, reinforced, two-channel, galvanic digi-
tal isolators. Two types of evaluation boards are avail-
able to support the MAX22245/MAX22246 family. The
MAX22246CWEVKIT# is fully assembled and tested and
comes populated with the MAX22246CAWA+ (Figure 1).
The MAX2224XWEVKIT# is a generic board which has
U1 unpopulated allowing the user to select a device from
the MAX22245/MAX22246 family (Figure 2). Both evalu-
ation boards support the wide-body 8-pin SOIC package
type. See Table 1 for EV kit options.
● Broad Range of Data Transfer Rates (from DC to
200Mbps)
● MAX22245 with 2:0 Channel Configuration and
MAX22246 with 1:1 Channel Configuration
● SMA Connectors for Easy Connection to External
Equipment
● Wide Power Supply Voltage Range from 1.71V
to 5.5V
● Guaranteed up to 5kV
Isolation for 60s
RMS
● -40°C to +125°C Temperature Range
● Proven PCB Layout
The EV kits should be powered from two independent
isolated power supplies with nominal output voltage in
range from 1.71V to 5.5V. For evaluating the electrical
parameters of the device without any isolation between
the two sides, a single power supply can also be used.
Ordering Information appears at end of data sheet.
The MAX2224XWEVKIT# comes with U1 unpopulated and
supports the following digital isolators: MAX22245BAWA+,
MAX22245CAWA+,MAX22245EAWA+,MAX22245FAWA+,
MAX22246BAWA+,MAX22246CAWA+,MAX22246EAWA+,
MAX22246FAWA+.
Note: When ordering the MAX2224XW EV kit, request a
sample of the desired MAX22245 or MAX22246 isolator
IC that can be soldered to the PCB.
Table 1. EV Kit Options
EV KIT PART NUMBER
MAX22246CWEVKIT#
MAX2224XWEVKIT#
TARGET DEVICE
MAX22246CAWA+
Not populated
PACKAGE TYPE
COMMENT
200Mbps IC Populated
Request Samples of Target Device from Maxim
8-SOIC Wide Body
8-SOIC Wide Body
319-100536; Rev 0; 5/20
Evaluate: MAX22245/MAX22246
MAX22245/MAX22246 Evaluation Kits
Figure 1. MAX22246CW EV Kit
Figure 2. MAX2224XW EV Kit
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Evaluate: MAX22245/MAX22246
MAX22245/MAX22246 Evaluation Kits
1) Connect one DC power supply between the EV kit’s
VDDA and GNDA test points; connect the other DC
power supply between VDDB and GNDB test points.
Quick Start
Required Equipment
● MAX22246CW or MAX2224XW EV kit
2) Set both DC power supply outputs between 1.71V
and 5.5V, and then enable the power supply output.
● MAX22245 or MAX22246 device, if EV kit U1 is
unpopulated
Note: It is also possible to power the EV kit from a single
power supply to test electrical parameters but this invali-
dates the digital isolation of the IC.
● Two DC power supplies with output range of 1.71V
to 5.5V
3) Connect the signal/function generator to an input
SMA connector of side A and observe the isolated
signal on the corresponding side B output, using an
oscilloscope. On the MAX22246CW EV kit, SMA con-
nectors A2 and B1 are inputs, and SMA connectors
A1 and B2 are outputs. See Table 2 for the SMA con-
nector I/O configurations when either a MAX22245
or a MAX22246 device is installed as U1 on the
MAX2224XW EV kit.
● Signal/function generator
● Oscilloscope
Procedure
The MAX22246CW EV kit is fully assembled and ready
for evaluation. The MAX2224XW EV kit has everything
except the DUT (U1) installed. The user can install the
desired version of the MAX22245/MAX22246 family of
reinforced, two-channel, unidirectional digital isolators.
Once installed, use the following steps to verify board
functionality:
Table 2. MAX2224XW EV Kit Connector Configurations
U1 DEVICE
CONNECTOR
MAX22245
MAX22246
SIDE A
VDDA
GNDA
A1
VDDA test point
GNDA test point
SMA connector for IN1
SMA connector for IN2
I/O on side A
VDDA test point
GNDA test point
SMA connector for OUT1
SMA connector for IN2
I/O on side A
A2
REFA1
REFA2
I/O on side A
I/O on side A
SIDE B
VDDB
GNDB
B1
VDDB test point
GNDB test point
VDDB test point
GNDB test point
SMA connector for OUT1
SMA connector for OUT2
I/O on side B
SMA connector for IN1
SMA connector for OUT2
I/O on side B
B2
REFB1
REFB2
I/O on side B
I/O on side B
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Evaluate: MAX22245/MAX22246
MAX22245/MAX22246 Evaluation Kits
Decoupling Capacitors
Detailed Description of Hardware
Each power supply is decoupled with a 1µF ceramic
capacitor in parallel with a 0.1µF ceramic capacitor, which
The MAX22246CW and MAX2224XW EV kits allow the
user to evaluate the features of the MAX22245/MAX22246
two-channel digital isolators.
are placed close to U1 V
and V
pins.
DDA
DDB
I/O Traces Impedance Control
External Power Supplies
The input and output traces of both isolation channels
have an impedance control of 50Ω. A 20Ω series resistor
is added to both input and output channels; along with
the internal series resistance, it can provide 50Ω imped-
ance matching with external equipment such as function
generators or oscilloscopes.
Power to the MAX22246CW and MAX2224XW EV kits
is derived from two external sources which can both
be between +1.71V and +5.5V. Connect one source
between the VDDA and GNDA test points, and the other
source between the VDDB and GNDB test points. Each
supply can be set independently and can be present over
the entire range from +1.71V to +5.5V, regardless of the
level or presence of the other supply. The MAX22245/
MAX22246 level-shift the data, transmitting them across
the isolation barrier.
Output Load
Each output has an unpopulated 0402 SMT resistor
(RA1, RA2, RB1, and RB2) and an unpopulated 0402
SMT capacitor (CA1, CA2, CB1, and CB2) to GND_ to
allow different loads based on customer requirements.
Two SMA connectors on each side of the board allow
easy connections to signal generator(s) and oscilloscope.
A typical test setup is shown in Figure 3.
DC POWER SUPPLY
1.71V TO 5.5V
DC POWER SUPPLY
1.71V TO 5.5V
-
+
+
-
OSCILLOSCOPE
SIGNAL GENERATOR
OUT
C
Figure 3. MAX2224XW EV Kit Typical Test Setup
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Evaluate: MAX22245/MAX22246
MAX22245/MAX22246 Evaluation Kits
unidirectional channel configurations. The MAX22245
features both channels transferring digital signals in one
direction. SMA connectors A1 and A2 on side A are input
connectors, and B1 and B2 on side B are output connec-
tors if the MAX22245 is installed as U1. The MAX22246
has one channel transmitting data in one direction and the
other channel transmitting in the opposite direction. SMA
connectors A2 and B1 are input connectors, and A1 and
B2 are output connectors if the MAX22246 is installed
as U1. See Table 2 for SMA connector I/O configurations
with different U1 selection.
Calibration Channels
Two reference channels (REFA1-REFB1 and REFA2-
REFB2) are implemented on the EV kits to help calibrate
the test setup for timing measurements such as propa-
gation delay. Measure the propagation delay (t
using the reference channel first to determine the delay
)
PD_REF
introduced by the test setup. Measure the propaga-
tion delay (t
) again using one of the MAX22245/
PD_ISO
MAX22246 data channels. The calibrated isolator delay
is t - t
.
PD_ISO PD_REF
U1 on the MAX2224XW EV Kit
When installing U1, make sure pin 1 of the device is
mounted onto pin 1 of U1 on the PCB. Pin 1 is located
at the upper left corner of U1, denoted by a white dot on
the silkscreen.
U1 on the MAX2224XWEVKIT# is not installed. The
user can install the desired version of the MAX22245/
MAX22246 family of two-channel unidirectional digital
isolators. The MAX22245/MAX22246 family offers two
Ordering Information
PART
TYPE
EV Kit with installed
MAX22246CAWA+
MAX22246CWEVKIT#
EV Kit for Wide Body SOIC
Package
MAX2224XWEVKIT#
#Denotes RoHS compliance.
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Evaluate: MAX22245/MAX22246
MAX22245/MAX22246 Evaluation Kits
MAX22245/MAX22246 EV Kit Bill of Materials
ITEM
REF_DES
DNI/DNP
QTY
MFG PART #
MANUFACTURER
VALUE
DESCRIPTION
A1, A2, B1, B2,
REFA1, REFA2,
REFB1, REFB2
JOHNSON
COMPONENTS
CONNECTOR; END LAUNCH JACK RECEPTACLE;
BOARDMOUNT; STRAIGHT THROUGH; 2PINS;
1
—
8
142-0701-851
142-0701-851
CC0603KRX7R0BB104;
GRM188R72A104KA35;
GCJ188R72A104KA01;
HMK107B7104KA;
YAGEO;MURATA;
MURATA;
TAIYO YUDEN;
AVX;MURATA
CAPACITOR; SMT (0603); CERAMIC CHIP; 0.1µF;
100V; TOL = 10%; TG = -55°C TO +125°C; TC = X7R
2
C1, C2
—
2
0.1µF
06031C104KAT2A;
GRM188R72A104K
GRM21BR71H105KA12;
CL21B105KBFNNN;
C2012X7R1H105K085AC;
UMK212B7105KG;
MURATA;
SAMSUNG
ELECTRONICS;
TDK;TAIY
CAPACITOR; SMT (0805); CERAMIC CHIP; 1UF;
50V; TOL = 10%; TG = -55°C TO +125°C; TC = X7R
3
4
C3, C4
—
—
2
2
1µF
N/A
CGA4J3X7R1H105K125AB
TEST POINT; PIN DIA = 0.125IN; TOTAL LENGTH = 0.445IN;
BOARD HOLE = 0.063IN; BLACK;
GNDA, GNDB
5011
KEYSTONE
PHOSPHOR BRONZE WIRE SILVER PLATE FINISH;
MACHINE FABRICATED; ROUND-THRU HOLE SPACER;
NO THREAD; M3.5; 5/8IN; NYLON
5
6
MTH1-MTH4
R1-R4
—
—
4
4
9032
KEYSTONE
9032
20
CRCW040220R0FK
VISHAY DALE
RESISTOR; 0402; 20Ω; 1%; 100PPM; 0.063W; THICK FILM
EVKIT PART - IC; MAX2224X SERIES; COMBINED SCHEMATIC
SYMBOL FOR MAX22245 AND MAX22246;
PACKAGE LAND PATTERN: 90-100146; WSOIC8
7
8
U1
—
—
1
2
MAX2224X
5010
MAXIM
MAX2224X
N/A
TEST POINT; PIN DIA=0.125IN; TOTAL LENGTH = 0.445IN;
BOARD HOLE=0.063IN; RED; PHOSPHOR BRONZE WIRE SIL;
VDDA, VDDB
PCB
KEYSTONE
9
—
1
0
MAX
N/A
MAXIM
N/A
PCB
PCB:MAX
CA1, CA2,
CB1, CB2
10
DNP
OPEN
PACKAGE OUTLINE 0402 NON-POLAR CAPACITOR
RA1, RA2,
RB1, RB2
11
DNP
0
N/A
N/A
OPEN
PACKAGE OUTLINE 0402 RESISTOR
TOTAL
26
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Evaluate: MAX22245/MAX22246
MAX22245/MAX22246 Evaluation Kits
MAX22245/MAX22246 EV Kit Schematic
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2
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Evaluate: MAX22245/MAX22246
MAX22245/MAX22246 Evaluation Kits
MAX22245/MAX22246 EV Kit PCB Layout Diagrams
1.0ꢀ
1.0ꢀ
MAX22245/MAX22246 EV Kit―Top Silkscreen
MAX22245/MAX22246 EV Kit―Top
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Evaluate: MAX22245/MAX22246
MAX22245/MAX22246 Evaluation Kits
MAX22245/MAX22246 EV Kit PCB Layout Diagrams (continued)
1.0ꢀ
1.0ꢀ
MAX22245/MAX22246 EV Kit―Layer 2 GND
MAX22245/MAX22246 EV Kit―Layer 3 PWR
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Evaluate: MAX22245/MAX22246
MAX22245/MAX22246 Evaluation Kits
MAX22245/MAX22246 EV Kit PCB Layout Diagrams (continued)
1.0ꢀ
MAX22245/MAX22246 EV Kit―Bottom
MAX22245/MAX22246 EV Kit―Bottom Silkscreen
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Evaluate: MAX22245/MAX22246
MAX22245/MAX22246 Evaluation Kits
Revision History
REVISION
NUMBER
REVISION
DATE
PAGES
CHANGED
DESCRIPTION
0
5/20
Initial release
—
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are implied. Maxim Integrated reserves the right to change the circuitry and specifications without notice at any time.
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