MAX22446 [MAXIM]

Broad Range of Data Transfer Rates (from DC to 200Mbps);


型号：	MAX22446
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：1562K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

MAX22444–MAX22446 Evaluation Kits

Evaluates: MAX22444–MAX22446

General Description

Features

The MAX22444–MAX22446 evaluation kits (EV kits)

provide a proven design to evaluate the MAX22444–

MAX22446, reinforced, four-channel, galvanic digital

isolators. Two types of evaluation boards are available

to support different channel direction configurations,

different ENA polarities and different output default

settings of the MAX22444–MAX22446 family. The

MAX22445FWEVKIT# is fully assembled and tested, and

comes populated with the MAX22445FAWE+ (Figure 1).

The MAX2244XWEVKIT# is a generic board which has

U1 unpopulated allowing the user to select a device from

the MAX22444-MAX22446 family (Figure 2). Both evaluation

boards support the wide-body 16-pin SOIC 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 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 MAX2244XWEVKIT# comes with U1 unpopulated and

supports the following digital isolators: MAX22444BAWE+,

MAX22444CAWE+, MAX22444EAWE+, MAX22444FAWE+,

MAX22444MAWE+,MAX22444NAWE+,MAX22445BAWE+,

MAX22445CAWE+, MAX22445EAWE+, MAX22445FAWE+,

MAX22445MAWE+,MAX22445NAWE+,MAX22445RAWE+,

MAX22445SAWE+, MAX22445UAWE+, MAX22445VAWE+,

MAX22446BAWE+, MAX22446CAWE+, MAX22446EAWE+,

MAX22446FAWE+, MAX22446MAWE+, MAX22446NAWE+.

Note: When ordering the MAX2244XW EV kit, the engineer

should request a sample of the desired MAX22444-MAX22446

isolator IC that can be soldered to the PCB.

Table 1. EV Kit Options

EVKIT PART #

MAX22445FWEVKIT#

MAX2244XWEVKIT#

TARGET DEVICE

MAX22445FAWE+

Not Populated

PACKAGE TYPE

COMMENT

200Mbps IC Populated

Request Samples of Target Device from Maxim

16-SOIC Wide-Body

319-100164; Rev 0; 3/18

MAX22444–MAX22446 Evaluation Kits

Evaluates: MAX22444–MAX22446

Figure 1. MAX22445FW EV KIT

Figure 2. MAX2244XW EV KIT

Procedure

Quick Start

The MAX22445FW EV kit is fully assembled and ready

for evaluation. The MAX2244XW EV kit has everything

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

desired version of the MAX22444–MAX22446 family of

reinforced, four-channel, unidirectional digital isolators.

Once installed, follow the steps below to verify board

functionality:

Required Equipment

● MAX22445FW or MAX2244XW EV kit

● MAX22444–MAX22446 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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MAX22444–MAX22446 Evaluation Kits

Evaluates: MAX22444–MAX22446

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 MAX22445FW 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 SMAconnector I/O conﬁgurations

and jumper J3-J6 conﬁgurations when a diﬀerent

MAX22444–MAX22446 device is installed as U1 on

the MAX2244XW EV kit.

• J5 is either in 1-2 position if U1 pin 7 has active-

high ENA polarity, or in 2-3 position if U1 pin 7 has

active-low ENA polarity.

• Jumper J6 is in 1-2 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. MAX2244XW EV Kits Board Connectors and Shunt Positions

CONNECTOR SHUNT POSITION

DESCRIPTION

SIDE A

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 enable or default control; same as J5 pin 2

Test point or input header for GNDA

I/O on side A

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

Connect power supply to V

DDA

Connect side A enable pin ENA or ENA, or default control pin DEFA to V

installed with MAX2244_B/C/E/F, outputs are enabled when ENA is connected to V

. If U1 is

DDA

. If

DDA

1-2*

2-3

U1 is installed with MAX22445R/S/U/V, outputs are high-impedance when ENA is connected

to V . If U1 is installed with MAX2244_M/N, output default is set to high when DEFA is

DDA

connected to V

. Default setting on MAX22445FWEVKIT#

DDA

Connect side A enable pin ENA or ENA, or default control pin DEFA to GNDA; If U1 is

installed with MAX2244_B/C/E/F, outputs are high-impedance when ENA is connected to

GNDA. If U1 is installed with MAX22445R/S/U/V, outputs are enabled when ENA is con-

nected to GNDA. If U1 is installed with MAX2244_M/N, output default is set to low when

DEFA is connected to GNDA

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MAX22444–MAX22446 Evaluation Kits

Evaluates: MAX22444–MAX22446

Table 2. MAX2244XW EV Kits Board Connectors and Shunt Positions (continued)

CONNECTOR SHUNT POSITION

DESCRIPTION

SIDE B

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 enable, or default control; same as J6 pin 2

Test point or input header for GNDB

I/O on side B

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

Connect power supply to V

DDB

Connect side B enable pin ENB or default control pin DEFB to V

; If U1 is installed with

DDB

MAX2244_B/C/E/F/R/S/U/V, outputs are enabled when ENB is connected to V

is installed with MAX2244_M/N, output default is set to high when DEFB is connected to

. If U1

DDB

1-2*

2-3

. Default setting on MAX22445FWEVKIT#

DDB

Connect side B enable pin ENB or default control pin DEFB to GNDB; If U1 is installed with

MAX2244_B/C/E/F/R/S/U/V, outputs are high-impedance when ENB is connected to GNDB. If U1

is installed with MAX2244_M/N, output default is set to low when DEFB is connected to GNDB

*Default configuration

Table 3. MAX2244XW EV Kits Connector Configurations

U1 DEVICE

CONNECTOR

MAX22444

B/C/E/F

MAX22444

M/N

MAX22445

B/C/E/F

MAX22445

M/N

MAX22445

R/S/U/V

MAX22446

B/C/E/F

MAX22446

M/N

SIDE A

A1 (SMA)

IN1

IN2

IN3

IN4

ENA

IN1

IN2

IN1

IN2

IN1

IN2

IN1

IN2

IN1

IN2

IN1

A2 (SMA)

IN2

A3 (SMA)

IN3

OUT3

OUT4

ENA

OUT3

OUT4

DEFA

A4 (SMA)

IN4

OUT4

ENA

OUT4

DEFA

OUT4

ENA

J3 PIN 7, J5 PIN 2

SIDE B

DEFA

B1 (SMA)

OUT1

OUT2

OUT3

OUT4

ENB

OUT1

OUT2

OUT3

OUT4

DEFB

OUT1

OUT2

OUT3

IN4

OUT1

OUT2

OUT3

IN4

OUT1

OUT2

OUT3

IN4

OUT1

OUT2

IN3

OUT1

OUT2

IN3

B2 (SMA)

B3 (SMA)

B4 (SMA)

IN4

J4 PIN 7, J6 PIN 2

ENB

DEFB

ENB

DEFB

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MAX22444–MAX22446 Evaluation Kits

Evaluates: MAX22444–MAX22446

and GNDA test points, and the other source between the

Detailed Description of Hardware

The MAX22444–MAX22446 EV kits allow the user to

evaluate the features of the MAX22444–MAX22446 four-

channel digital isolators.

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 MAX22444–MAX22446 level-shift the

data, transmitting them across the isolation barrier.

External Power Supplies

Power to the MAX22445FW and MAX2244XW 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

Figure 3. MAX2244XW EV Kit Typical Test Setup

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MAX22444–MAX22446 Evaluation Kits

Evaluates: MAX22444–MAX22446

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

MAX22444–MAX22446 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 propaga-

tion delay. Measure the propagation delay (t

)

PD_REF

using the reference channel first to determine the delay

introduced by the test setup. Measure the propagation

Jumper J5 and J6 are provided to enable or disable

the outputs of the MAX2244_B/C/E/F/R/S/U/V isolator

channels, or configure the default level (high or low) of the

MAX2244_M/N isolator outputs.

delay (t

) again using one of the MAX22444–

PD_ISO

MAX22446 data channels. The calibrated isolator delay

is t - t

PD_ISO PD_REF

To enable devices with an active-high enable pin on side

A (MAX2244_B/C/E/F), connect the J5 shunt to V

. To

U1 on the MAX2244XW EV Kit

DDA

enable devices with an active-low enable pin on side A

(MAX22445R/S/U/V), connect the J5 shunt to GNDA. Side

A outputs are high-impedance when disabled. Connect the

U1 on the MAX2244XWEVKIT# is not installed. The

user can install the desired version of the MAX22444–

MAX22446 family of four-channel unidirectional digital

isolators. The MAX22444–MAX22446 family offers three

unidirectional channel configurations. The MAX22444

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 MAX22444 is installed as U1. The MAX22445 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 MAX22445 is

installed as U1. The MAX22446 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 MAX22446 is installed as U1. Refer to

Table 3 for SMA connector I/O configurations with different

U1 selection.

J6 shunt to V

to enable side B channels or connect to

DDB

GNDB to disable side B channels (MAX2244_B/C/E/F/R/S/

U/V). Side B outputs are high-impedance when disabled.

All channels on the MAX2244_M/N are always enabled.

However, the output default level is configurable. To

configure the default level of both side A and side B

outputs to high, connect J5 to V

and J6 to V

. To

DDA

DDB

configure the default level of the outputs to low, connect

J5 to GNDA and J6 to GNDB. Ensure the logic state of

J5 is the same as that for J6. Configure J5 and J6 before

powering up the board and do not toggle J5 and J6 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 MAX22445FAWE+

EV Kit for wide-body SOIC package

MAX22445FWEVKIT#

MAX2244XWEVKIT#

#Denotes RoHS compliant.

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MAX22444–MAX22446 Evaluation Kits

Evaluates: MAX22444–MAX22446

MAX22444–MAX22446 EV Kit Bill of Materials

ITEM

REF_DES

QTY

MFG PART #

MANUFACTURER

VALUE

DESCRIPTION

COMMENTS

A1-A4, B1-B4,

REFA1, REFA2,

REFB1, REFB2

CONNECTOR; END LAUNCH JACK

RECEPTACLE; BOARDMOUNT; STRAIGHT

THROUGH; 2PINS;

142-0701-851

JOHNSON COMPONENTS

142-0701-851

GCJ188R71H104KA12;

GCM188R71H104K;

CGA3E2X7R1H104K080AA

CAPACITOR; SMT (0603); CERAMIC CHIP;

0.1µF; 50V; TOL = 10%; TG = -55°C TO

+125°C; TC = X7R; AUTO

C1, C2

MURATA;MURATA;TDK

0.1µF

GRM21BR71H105KA12;

CL21B105KBFNNNE;

C2012X7R1H105K085AC;

UMK212B7105KG

CAPACITOR; SMT (0805); CERAMIC CHIP;

1µF; 50V; TOL = 10%; TG=-55°C TO +125°C;

TC = X7R

MURATA;SAMSUNG

ELECTRONICS;TDK;TAIYO YUDEN

C3, C4

J1, J2

1µF

CONNECTOR; MALE; THROUGH HOLE;

BREAKAWAY; STRAIGHT; 2PINS

PEC02SAAN

SULLINS

PEC02SAAN

CONNECTOR; MALE; SMT; BREAKAWAY;

STRAIGHT; 8PINS

J3, J4

J5, J6

R1-R8

5-146128-6

TE CONNECTIVITY

SULLINS

5-146128-6

PEC03SAAN

CONNECTOR; MALE; THROUGH HOLE;

BREAKAWAY; STRAIGHT; 3PINS

PEC03SAAN

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

0.063W; THICK FILM

CRCW040220R0FK

VISHAY DALE

TEST POINT; JUMPER; STR; TOTAL

LENGTH = 0.256IN; BLACK; INSULATION =

PBT CONTACT = PHOSPHOR BRONZE;

COPPER PLATED TIN OVERALL

SU1-SU4

STC02SYAN

5011

SULLINS ELECTRONICS CORP.

KEYSTONE

STC02SYAN

N/A

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;

TEST POINT; PIN DIA = 0.125IN; TOTAL

LENGTH = 0.445IN; BOARD HOLE =

0.063IN; ORANGE; PHOSPHOR BRONZE

WIRE SILVER PLATE FINISH

TP_VDDA,

TP_VDDB

5013

KEYSTONE

N/A

EVKIT PART-IC; MAX2244X SERIES;

PACKAGE DRAWING NUMBER: 21-0042;

PACKAGE LAND PATTERN: 90-0107;

PACKAGE CODE: W16MS+12; WSOIC16

MAX2244X

MAXIM

MAX2244X

PCB

MAX2244XW

1902B

MAXIM

PCB

N/A

PCB:MAX2244XW

STANDOFF; FEMALE-THREADED; HEX;4-

40IN; 3/8IN; NYLON

MTH1-MTH4

DNI

GENERIC PART

MACHINE SCREW; SLOTTED; PAN;4-40IN;

3/8IN; NYLON

MTH1-MTH4

P440.375

GENERIC PART

N/A

RA1-RA4, RB1-

RB4

CA1-CA4, CB1-

CB4

DNP

N/A

OPEN

PACKAGE OUTLINE 0402 RESISTOR

PACKAGE OUTLINE 0402 NON-POLAR

CAPACITOR

TOTAL

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MAX22444–MAX22446 Evaluation Kits

Evaluates: MAX22444–MAX22446

MAX22444–MAX22446 EV Kit Schematic

P E C 0 2 S A A N

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MAX22444–MAX22446 Evaluation Kits

Evaluates: MAX22444–MAX22446

MAX22444–MAX22446 EV Kit PCB Layout Diagrams

MAX22444–MAX22446 EV Kit—Top

MAX22444–MAX22446 EV Kit—Top Silkscreen

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MAX22444–MAX22446 Evaluation Kits

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MAX22444–MAX22446 EV Kit PCB Layout Diagrams (continued)

MAX22444–MAX22446 EV Kit—L3 PWR

MAX22444–MAX22446 EV Kit—L2 GND

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MAX22444–MAX22446 Evaluation Kits

Evaluates: MAX22444–MAX22446

MAX22444–MAX22446 EV Kit PCB Layout Diagrams (continued)

MAX22444–MAX22446 EV Kit—Bottom

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Revision History

REVISION

NUMBER

REVISION

DATE

PAGES

CHANGED

DESCRIPTION

3/18

Initial release

—

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim Integrated’s website at www.maximintegrated.com.

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

MAX22446 [MAXIM]

相关型号：

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MAX2245EBL-T

MAX2245EBL-T

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MAX2246

MAX2246EBL

MAX2246EBL

MAX2246EBL+