MAX22345CSEVKIT_技术文档

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MAX22344–MAX22346 Evaluation Kits

Evaluates: MAX22344–MAX22346

General Description

Features

The MAX22344–MAX22346 evaluation kits (EV kits)

provide a proven design to evaluate the MAX22344–

MAX22346, reinforced, four-channel, galvanic digital

isolators. Two types of evaluation boards are available

to support different channel direction configurations and

different ENA polarities of the MAX22344–MAX22346

family. The MAX22345CSEVKIT# is fully assembled and

tested, and comes populated with the MAX22345CAAP+

(Figure 1). The MAX2234XSEVKIT# is a generic board

which has U1 unpopulated allowing the user to select a

device from the MAX22344-MAX22346 family (Figure 2).

Both evaluation boards support the 20-pin SSOP package

type. See Table 1 for EV kit options.

● Broad Range of Data Transfer Rates (from DC to

200Mbps)

● Four Unidirectional Channels with 3 Different

Channel Direction Configurations

● SMA Connectors for Easy Connection to External

Equipment

● Wide Power Supply Voltage Range from 1.71V to 5.5V

● Guaranteed Up to 3.75kV

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 MAX2234XSEVKIT# comes with U1 unpopulated and

supports the following digital isolators: MAX22344BAAP+,

MAX22344CAAP+, MAX22345BAAP+, MAX22345CAAP+,

MAX22345RAAP+, MAX22345SAAP+, MAX22346BAAP+,

MAX22346CAAP+.

Note: When ordering the MAX2234XS EV kit, the engineer

should request a sample of the desired MAX22344-

MAX22346 isolator IC that can be soldered to the PCB.

Table 1. EV Kit Options

EVKIT PART #

MAX22345CSEVKIT#

MAX2234XSEVKIT#

TARGET DEVICE

MAX22345CAAP+

Not Populated

PACKAGE TYPE

COMMENT

200Mbps IC Populated

Request Samples of Target Device from Maxim

20-Pin SSOP

319-100166; Rev 1; 10/18

MAX22344–MAX22346 Evaluation Kits

Evaluates: MAX22344–MAX22346

Figure 2. MAX2234XS EV KIT

Figure 1. MAX22345CS EV KIT

Procedure

Quick Start

The MAX22345CS EV kit is fully assembled and ready

for evaluation. The MAX2234XS EV kit has everything

except the DUT (U1) installed. The user can install the

desired version of the MAX22344–MAX22346 family of

reinforced, four-channel, unidirectional digital isolators.

Once installed, follow the steps below to verify board

functionality:

Required Equipment

● MAX22345CS, or MAX2234XS EV kit

● MAX22344–MAX22346 device, if EV kit is not populated

● Two DC power supplies with output range of 1.71V

to 5.5V

● Signal/function generator

● Oscilloscope

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MAX22344–MAX22346 Evaluation Kits

Evaluates: MAX22344–MAX22346

1) Verify jumper settings. See Table 2 for all shunt positions.

• J1 and J2 are closed.

4) Connect the signal/function generator to an input

SMA connector or test point of side A and observe

the isolated signal on the corresponding side B output,

using an oscilloscope. On the MAX22345CS EV kit,

SMA connectors A1, A2, A3, and B4 are inputs, and

SMA connectors B1, B2, B3, and A4 are outputs.

Refer to Table 3 for the SMA connector I/O conﬁgura-

tions and jumper ENA conﬁguration when a diﬀerent

MAX22344–MAX22346 device is installed as U1 on

the MAX2234XS EV kit.

• Jumper ENA is either in 1-2 position if U1 ENA (pin

8) has active-high polarity, or in 2-3 position if U1

ENA (pin 8) has active-low polarity.

• Jumper ENB is in 1-2 position.

• Jumper DEFA and DEFB are in 2-3 position.

2) Connect one DC power supply between the EV kit’s

TP_VDDA and TP1_GNDA test points; connect the

other DC power supply between TP_VDDB and TP1_

GNDB test points.

3) Set both DC power supply outputs between 1.71V

and 5.5V, and then enable the power supply output.

Note: It is also possible to power the EV kits from a

single power supply to test electrical parameters but

this invalidates the digital isolation of the IC.

Table 2. MAX2234XS EV Kits Board Connectors and Shunt Positions

CONNECTOR SHUNT POSITION

DESCRIPTION

SIDE A

1

2

3

4

Test point or input header for V

DDA

Test point or input header for GNDA

Test point or input header for I/O; same as A1 SMA

Test point or input header for I/O; same as A2 SMA

Test point or input header for I/O; same as A3 SMA

Test point or input header for I/O; same as A4 SMA

Test point or input header for side A default control; same as DEFA jumper pin 2

Test point or input header for side A enable; same as ENA jumper pin 2

Test point or input header for GNDA

5

J3

6

7

8

9

10

Test point or input header for GNDA

A1 (SMA)

A2 (SMA)

A3 (SMA)

A4 (SMA)

n/a

I/O on side A

n/a

I/O on side A

n/a

I/O on side A

Open

1-2*

Use current meter to measure current of side A

J1

Connect power supply to V

DDA

Connect side A default control pin to V

must be set in the same position as DEFB

; side A output default is set to high. Jumper DEFA

DDA

1-2

2-3*

1-2*

DEFA

Connect side A default control pin to GNDA; side A output default is set to low. Jumper DEFA

must be set in the same position as DEFB. Default setting on MAX22345CSEVKIT#

Connect side A enable pin to V

; side A outputs are enabled if ENA is active-high (MAX2234_B/C),

DDA

or high-impedance if active-low (MAX22345R/S). Default setting on MAX22345CSEVKIT#

ENA

Connect side A enable pin to GNDA; side A outputs are high-impedance if ENA is active-high

(MAX2234_B/C), or enabled if active-low (MAX22345R/S)

2-3

Open

Side A enable pin not connected; default setting on MAX2234XSEVKIT#

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MAX22344–MAX22346 Evaluation Kits

Evaluates: MAX22344–MAX22346

Table 2. MAX2234XS EV Kits Board Connectors and Shunt Positions (continued)

CONNECTOR SHUNT POSITION

DESCRIPTION

SIDE B

1

2

3

4

Test point or input header for V

DDB

Test point or input header for GNDB

Test point or input header for I/O; same as B1 SMA

Test point or input header for I/O; same as B2 SMA

Test point or input header for I/O; same as B3 SMA

Test point or input header for I/O; same as B4 SMA

Test point or input header for side B default control; same as DEFB jumper pin 2

Test point or input header for side B enable; same as ENB jumper pin 2

Test point or input header for GNDB

5

J4

6

7

8

9

10

Test point or input header for GNDB

B1 (SMA)

B2 (SMA)

B3 (SMA)

B4 (SMA)

n/a

I/O on side B

n/a

I/O on side B

n/a

I/O on side B

Open

1-2*

Use current meter to measure current of side B

J2

Connect power supply to V

DDB

Connect side B default control pin to V

DEFB must be set in the same position as DEFA

; side B output default is set to high. Jumper

DDB

1-2

DEFB

Connect side B default control pin to GNDB; side B output default is set to low. Jumper

DEFB must be set in the same position as DEFA. Default setting on MAX22345CSEVKIT#

2-3*

Connect side B enable pin to V

MAX22345CSEVKIT#

; side B outputs are enabled. Default setting on

DDB

1-2*

2-3

ENB

Connect side B enable pin to GNDB; side B outputs are high-impedance

*Default configuration

Table 3. MAX2234XS EV Kits Connector Configurations

U1 DEVICE

CONNECTOR

MAX22344B/C

MAX22345B/C

MAX22345R/S

MAX22346B/C

SIDE A

A1 (SMA)

IN1

IN2

IN3

IN4

ENA

IN1

IN2

IN1

IN2

IN1

IN2

A2 (SMA)

A3 (SMA)

IN3

OUT3

OUT4

ENA

A4 (SMA)

OUT4

ENA

OUT4

ENA

J3 PIN 8, ENA PIN 2

SIDE B

B1 (SMA)

OUT1

OUT2

OUT3

OUT4

ENB

OUT1

OUT2

OUT3

IN4

OUT1

OUT2

OUT3

IN4

OUT1

OUT2

IN3

B2 (SMA)

B3 (SMA)

B4 (SMA)

IN4

J4 PIN 8, ENB PIN 2

ENB

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MAX22344–MAX22346 Evaluation Kits

Evaluates: MAX22344–MAX22346

and GNDA test points, and the other source between the

Detailed Description of Hardware

The MAX22344–MAX22346 EV kits allow the user to

evaluate the features of the MAX22344–MAX22346 four-

channel digital isolators.

V

DDB

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 MAX22344–MAX22346 level-shift the

External Power Supplies

data, transmitting them across the isolation barrier.

Power to the MAX22345CS and MAX2234XS EV kits is

derivedfromtwoexternal sources which can both be between

Four 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.

+1.71V and +5.5V. Connect one source between the V

DDA

DC POWER SUPPLY

1.71V TO 5.5V

DC POWER SUPPLY

1.71V TO 5.5V

-

+

-

OSCILLOSCOPE

SIGNAL GENERATOR

OUT

C

Figure 3. MAX2234XS EV Kit Typical Test Setup

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MAX22344–MAX22346 Evaluation Kits

Evaluates: MAX22344–MAX22346

Decoupling Capacitors

Output Load

Each power supply is decoupled with a 1µF ceramic

capacitor in parallel with a 0.1µF ceramic capacitor, which

Each output has an unpopulated 0603 SMT resistor

(RA1–RA4, RB1–RB4) and an unpopulated 0603 SMT

capacitor (CA1–CA4, CB1–CB4) to GND_ to allow

different loads based on customer requirements.

are placed close to the U1 V

and V

pin.

DDA

DDB

Shunt Positions

Calibration Channels

Jumpers J1 and J2 are installed between the external

power supplies and U1 power supply pins to allow supply

current measurement. Uninstall the J1 and J2 shunts

and connect current meters on both side A and side B to

measure the MAX22344–MAX22346 supply current.

Two reference channels (REFA1–REFB1, REFA2–

REFB2) are implemented on the EV kits to help calibrate

the test setup for timing measurements such as

propagation delay. Measure the propagation delay

(t

)

using the reference channel first to

determine the delay introduced by the test setup. Measure

the propagation delay (t ) again using one of the

PD_REF

Jumper ENA and ENB are provided to enable or disable the

outputs of the MAX22344–MAX22346 isolator channels.

To enable devices with an active-high enable pin (ENA) on

PD_ISO

MAX22344–MAX22346 data channels. The calibrated

isolator delay is t - t

side A (MAX2234_B/C), connect the ENA shunt to V

. To

DDA

.

PD_ISO PD_REF

enable devices with an active-low enable pin (ENA) on side

A (MAX22345R/S), connect the ENA shunt to GNDA. Side

A outputs are high-impedance when disabled. Connect the

U1 on the MAX2234XS EV Kit

U1 on the MAX2234XSEVKIT# is not installed. The

user can install the desired version of the MAX22344–

MAX22346 family of four-channel unidirectional digital

isolators. The MAX22344–MAX22346 family offers three

unidirectional channel configurations. The MAX22344

features all four channels transferring digital signals in

one direction. SMA connectors A1-A4 on side A are input

connectors and B1-B4 on side B are output connectors

if the MAX22344 is installed as U1. The MAX22345 has

three channels transmitting data in one direction and

one channel transmitting in the opposite direction. SMA

connectors A1-A3 and B4 are input connectors and

B1–B3 and A4 are output connectors if the MAX22345 is

installed as U1. The MAX22346 provides two channels

in each direction. SMA connectors A1, A2, B3, and B4

are input connectors and B1, B2, A3 and A4 are output

connectors if the MAX22346 is installed as U1. Refer

to Table 3 for SMA connector I/O configurations with

different U1 selection.

ENB shunt to V

GNDB to disable side B channels. Side B outputs are high-

impedance when disabled.

to enable side B channels or connect to

DDB

The MAX22344–MAX22346 feature user-selectable

default-high or default-low outputs. To configure the

default level of both side A and side B outputs to high,

connect the DEFA shunt to V

and the DEFB shunt to

DDA

V

DDB

. To configure the default level of the outputs to low,

connect the DEFA shunt to GNDA and the DEFB shunt to

GNDB. Ensure the logic state of DEFA is the same as that

for DEFB. Configure DEFA and DEFB before powering

up the board and do not toggle DEFA and DEFB during

normal operation. See Table 2 for all shunt positions and

Table 3 for connector configurations.

I/O Traces Impedance Control

The input and output traces of all four isolation channels

have an impedance control of 50Ω. A 20Ω series resistor

is added to all input and output channels; along with the

internal series resistance, it can provide 50Ω impedance

matching with external equipment such as function gen-

erators or oscilloscopes.

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.

Ordering Information

PART

TYPE

EV Kit with installed MAX22345CAAP+

EV Kit for 20-pin SSOP package

MAX22345CSEVKIT#*

MAX2234XSEVKIT#

#Denotes RoHS compliant.

*Future product—contact factory for availability.

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MAX22344–MAX22346 Evaluation Kits

Evaluates: MAX22344–MAX22346

MAX22344–MAX22346 EV Kit Bill of Materials

ITEM

REF_DES

QTY

12 142-0701-851

GCJ188R71H104KA12;

MFG PART #

MANUFACTURER

VALUE

DESCRIPTION

COMMENTS

A1-A4, B1-B4,

REFA1, REFA2,

REFB1, REFB2

CONNECTOR; END LAUNCH JACK

1

JOHNSON COMPONENTS 142-0701-851 RECEPTACLE; BOARDMOUNT;

STRAIGHT THROUGH; 2PINS;

CAPACITOR; SMT (0603); CERAMIC

2

3

C1, C2

C3, C4

2

GCM188R71H104K;

CGA3E2X7R1H104K080AA

MURATA;MURATA;TDK

0.1µF

CHIP; 0.1µF; 50V; TOL=10%; TG=-55°C

TO +125°C; TC=X7R; AUTO

GRM21BR71H105KA12;

CL21B105KBFNNNE;

C2012X7R1H105K085AC;

UMK212B7105KG

MURATA;SAMSUNG

ELECTRONICS;TDK;TAIYO 1µF

YUDEN

CAPACITOR; SMT (0805); CERAMIC

CHIP; 1µF; 50V; TOL=10%; TG=-55°C TO

+125°C; TC=X7R

2

ENA, ENB, DEFA,

DEFB

CONNECTOR; MALE; THROUGH HOLE;

BREAKAWAY; STRAIGHT; 3PINS

4

5

4

2

PEC03SAAN

PEC02SAAN

SULLINS

PEC03SAAN

CONNECTOR; MALE; THROUGH HOLE;

BREAKAWAY; STRAIGHT; 2PINS

J1, J2

PEC02SAAN

CONNECTOR; MALE; SMT; AMPMODU II

PIN HEADER; SINGLE ROW; PACKED IN

BLISTER; STRAIGHT; 10PINS

6

7

J3, J4

R1-R8

2

8

1-1241150-0

TE CONNECTIVITY

VISHAY DALE

1-1241150-0

20

RESISTOR; 0402; 20 OHM; 1%; 100PPM;

0.063W; THICK FILM

CRCW040220R0FK

TEST POINT; JUMPER; STR; TOTAL

LENGTH=0.256IN; BLACK;

INSULATION=PBT

CONTACT=PHOSPHOR BRONZE;

COPPER PLATED TIN OVERALL

SULLINS ELECTRONICS

CORP.

8

9

SU1-SU6

6

STC02SYAN

TP1_GNDA,

TP1_GNDB,

TP2_GNDA,

TP2_GNDB

TEST POINT; PIN DIA=0.125IN; TOTAL

LENGTH=0.445IN; BOARD

HOLE=0.063IN; BLACK; PHOSPHOR

BRONZE WIRE SILVER PLATE FINISH;

4

2

5011

5013

KEYSTONE

N/A

TEST POINT; PIN DIA=0.125IN; TOTAL

LENGTH=0.445IN; BOARD

HOLE=0.063IN; ORANGE; PHOSPHOR

BRONZE WIRE SILVER PLATE FINISH;

10 TP_VDDA, TP_VDDB

EVKIT PART - IC; MAX2234X SERIES;

PACKAGE DRAWING NUMBER: 21-0056;

PACKAGE LAND PATTERN: 90-0094;

PACKAGE CODE: A20MS+6; SSOP20

11

U1

1

MAX2234X

MAXIM

MAX2234X

12

13

PCB

1

4

MAX2234XS

1902B

MAXIM

PCB

N/A

PCB:MAX2234XS

-

STANDOFF; FEMALE-THREADED; HEX;

4-40IN; 3/8IN; NYLON

MTH1-MTH4

DNI

GENERIC PART

MACHINE SCREW; SLOTTED; PAN; 4-

40IN; 3/8IN; NYLON

14

15

MTH1-MTH4

4

0

P440.375

N/A

GENERIC PART

N/A

RA1-RA4, RB1-RB4 DNP

CA1-CA4, CB1-CB4 DNP

N/A

OPEN

PACKAGE OUTLINE 0402 RESISTOR

PACKAGE OUTLINE 0402 NON-POLAR

CAPACITOR

16

0

N/A

TOTAL

54

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MAX22344–MAX22346 Evaluation Kits

Evaluates: MAX22344–MAX22346

MAX22344–MAX22346 EV Kit Schematic

2

5

4

3

4

5

2

5

3

4

2

5

3

4

2

5

3

4

2

5

3

4

2

4

3

5

P E C 0 2 S A A N

1

2

5

3

4

2

P E C 0 2 S A A N

1

2

4

3

5

2

4

3

5

2

4

3

5

2

4

3

5

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MAX22344–MAX22346 Evaluation Kits

Evaluates: MAX22344–MAX22346

MAX22344–MAX22346 EV Kit PCB Layout Diagrams

MAX22344–MAX22346 EV Kit—Top

MAX22344–MAX22346 EV Kit—Top Silkscreen

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MAX22344–MAX22346 Evaluation Kits

Evaluates: MAX22344–MAX22346

MAX22344–MAX22346 EV Kit PCB Layout Diagrams (continued)

MAX22344–MAX22346 EV Kit—L3 PWR

MAX22344–MAX22346 EV Kit—L2 GND

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MAX22344–MAX22346 Evaluation Kits

Evaluates: MAX22344–MAX22346

MAX22344–MAX22346 EV Kit PCB Layout Diagrams (continued)

MAX22344–MAX22346 EV Kit—Bottom

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MAX22344–MAX22346 Evaluation Kits

Evaluates: MAX22344–MAX22346

Revision History

REVISION

NUMBER

REVISION

DATE

PAGES

CHANGED

DESCRIPTION

0

1

3/18

Initial release

—

Added future product designation to MAX22345CSEVKIT# in the Ordering

Information table

10/18

6

For pricing, delivery, and ordering information, please visit Maxim Integrated’s online storefront at https://www.maximintegrated.com/en/storefront/storefront.html.

Maxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrated product. No circuit patent licenses

are implied. Maxim Integrated reserves the right to change the circuitry and speciﬁcations without notice at any time.

©

Maxim Integrated and the Maxim Integrated logo are trademarks of Maxim Integrated Products, Inc.

2018 Maxim Integrated Products, Inc.

│ 12


型号：	MAX22345CSEVKIT
厂家：	MAXIM INTEGRATED PRODUCTS
描述：	Broad Range of Data Transfer Rates (from DC to 200Mbps)
文件：	总12页 (文件大小：1592K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

MAX22345CSEVKIT [MAXIM]

相关型号：

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MAX22346CAAP

MAX22346CAAP+

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MAX2235EUP+

MAX2235EUP+T

MAX2235EUP-T

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