Analog Devices EVAL-ADG788EBZ Manuel utilisateur

Evaluation Board for ADG788

Triple SPDT Switch in Chip Scale Package

EVAL-ADG788EBZ

Rev. 0

Evaluation boards are only intended for device evaluation and not for production purposes.

Evaluation boards are supplied “as is” and without warranties of any kind, express, implied, or

statutory including, but not limited to, any implied warranty of merchantability or fitness for a

particular purpose. No license is granted by implication or otherwise under any patents or other

intellectual property by application or use of evaluation boards. Information furnished by Analog

Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog

Devices for its use, nor for any infringements of patents or other rights of third parties that may result

from its use. Analog Devices reserves the right to change devices or specifications at any time

without notice. Trademarks and registered trademarks are the property of their respective owners.

Evaluation boards are not authorized to be used in life support devices or systems.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781.329.4700 www.analog.com

FEATURES

Supply voltage

Single: 1.8 V to 5.5 V

Dual: ±2.5 V

TTL-/CMOS-compatible control inputs

Switch control options

On-board links

External control signals

RoHS compliant

GENERAL DESCRIPTION

This data sheet describes the evaluation board for the ADG788,

a triple SPDT switch packaged in a compact 4 mm × 4 mm body,

20-lead LFCSP package. The switches are designed using an

enhanced submicron CMOS process to provide optimal

performance in terms of on resistance, bandwidth, and power

dissipation. The excellent on resistance flatness makes the

ADG788 ideal for a wide range of applications, including data

and audio-video switching. Each SPDT switch can be

individually controlled using a 1-wire parallel interface.

The evaluation board supports both single- and dual-supply

operation and comes fitted with connectors that allow the user

to evaluate the performance of the ADG788 with minimum effort.

The operation of the switches is controlled using the on-board

links or by applying external control signals to the appropriate

connectors.

The data sheet for the ADG788 device is available from Analog

Devices, Inc. It contains all the information regarding operation

of the device, and it should be consulted in conjunction with

this data sheet when using the evaluation board.

EVALUATION BOARD

06756-001

Figure 1.

EVAL-ADG788EBZ

Rev. 0 | Page 2 of 8

TABLE OF CONTENTS

Features .............................................................................................. 1

General Description ......................................................................... 1

Evaluation Board .............................................................................. 1

Revision History ............................................................................... 2

Evaluation Board Hardware............................................................ 3

Power Supply................................................................................. 3

Switch Control .............................................................................. 3

Connections and Test Points .......................................................4

Evaluation Board Schematics and Artwork...................................5

Ordering Information.......................................................................7

Bill of Materials..............................................................................7

Ordering Guide .............................................................................7

ESD Caution...................................................................................7

REVISION HISTORY

6/07—Revision 0: Initial Version

EVAL-ADG788EBZ

Rev. 0 | Page 3 of 8

EVALUATION BOARD HARDWARE

The ADG788 evaluation board kit contains the following:

•A fully fitted printed circuit board

•A CD containing the ADG788 product data sheet and the

evaluation board data sheet

The evaluation board allows the user to connect the signals that

require switching to the ADG788 switch and control its operation

by using the on-board links or by applying the correct control

signals to the appropriate connectors. The signals present at the

pins of the ADG788 can be monitored using the test point

provided on the board.

The following sections describe the function of all connectors

and links.

POWER SUPPLY

To operate the ADG788 evaluation board, the user must provide

an external power supply connected to Power Block P1. The

supply voltage range is 1.8 V to 5.5 V for single-supply operation

and ±2.5 V for dual-supply operation. The user can select single-

supply operation or dual-supply operation using Link J23, as shown

in Table 1.

Table 1. Link J23 Configuration

Position Operation Mode

A Single-supply operation

B Dual-supply operation (default configuration)

SWITCH CONTROL

The four input pins, IN1, IN2, IN3, and IN4, control the opera-

tion of the ADG788. Link J8, Link J9, Link J12, and Link J13

control the logic levels applied to these pins and allow the user

to drive these pins with external signals applied to Connector J5

and Connector J11 (the signals have 50 Ω on-board termination

resistors to GND). Table 2 describes the configuration achieved

for each position of these links.

Table 2. Link J8, Link J9, Link J12, and Link J13 Settings

Link Position ADG788 Switch Status

Removed S2A to D2 = off, S2B to D2 = on

A S2A to D2 = on, S2B to D2 = off

High: S2A to D2 = on, S2B to D2 = off

B (default configuration) Controlled via signal applied to Connector J5_TOP

Low: S2A to D2 = off, S2B to D2 = on

Removed S3A to D3 = off, S3B to D3 = on

A S3A to D3 = on, S3B to D3 = off

High: S3A to D3 = on, S3B to D3 = off

B (default configuration) Controlled via signal applied to Connector J5_BOTTOM

Low: S3A to D3 = off, S3B to D3 = on

Removed S1A to D1 = off, S1B to D1 = on

High: S1A to D1 = on, S1B to D1 = offA (default configuration) Controlled via signal applied to Connector J11_BOTTOM

Low: S1A to D1 = off, S1B to D1 = on

J12

B S1A to D1 = on, S1B to D1 = off

Removed S4A to D4 = off, S4B to D4 = on

High: S4A to D4 = on, S4B to D4 = offA (default configuration) Controlled via signal applied to Connector J11_TOP

Low: S4A to D4 = off, S4B to D4 = on

J13

B S4A to D4 = on, S4B to D4 = off

EVAL-ADG788EBZ

Rev. 0 | Page 4 of 8

CONNECTIONS AND TEST POINTS

Table 3.

Connector Position Test Point Connection to ADG788 Pin

J1 Top T19 S1A

Bottom T1 D1

J2 Top T2 S1B

Bottom T3 S2B

J3 Top T4 D2

Bottom T5 S2A

J4 VDD T9 VDD

GND T10 GND

SS T8 VSS

J51Top T6 IN2

Bottom T7 IN3

J6 Top T11 S3A

Bottom T12 D3

J7 Top T13 S3B

Bottom T14 S4B

J10 Top T15 D4

Bottom T16 S4A

J111Top T17 IN4

Bottom T18 IN1

1This connector is tied to the ADG788 pins only when Link J8 and Link J9 are set in Position B, and J12 and J13 are in Position A.

EVAL-ADG788EBZ

Rev. 0 | Page 5 of 8

EVALUATION BOARD SCHEMATICS AND ARTWORK

J4-1

J4-3

J4-2

T10

10µF

J23

CASE

GND

TOP

BOTTOM

PHONO_DUAL

CASE

GND

TOP

BOTTOM

PHONO_DUAL

CASE

GND

TOP

BOTTOM

PHONO_DUAL

CASE

GND

TOP

BOTTOM

PHONO_DUAL

3J9

DD 1

IN2

IN3

S2A

S2B

GND

S1B

S3B

S3A

S4B

S4A

IN4

IN1

S1A

ADG788

0.1µF

T19

T18

T17

T16

T15

T14

T13

T12

T11

0.1µF

50Ω

10kΩ

J12

J13

10kΩ

50Ω

CASE

TOP

GND

BOTTOM

PHONO_DUAL

J11

CASE

TOP

GND

BOTTOM

PHONO_DUAL

J10

3CASE

CASE

TOP

GND

BOTTOM

PHONO_DUAL

3CASE

CASE

TOP

GND

BOTTOM

PHONO_DUAL

6756-002

Figure 2. Evaluation Board Schematic

EVAL-ADG788EBZ

Rev. 0 | Page 6 of 8

06756-003

06756-004

Figure 3. Component Side PCB Drawing (Layer 1) Figure 4. Solder Side PCB Drawing (Layer2) Component Side View

06756-005

Figure 5. Component Side Silkscreen PCB Drawing

EVAL-ADG788EBZ

Rev. 0 | Page 7 of 8

ORDERING INFORMATION

BILL OF MATERIALS

Table 4.

Qty Reference Designator Description Supplier/Number

2 C1, C2 0.1 μF SMD ceramic capacitor FEC 301-9482

2 C3, C4 10 μF (0805 package) 10 V X5R SMD ceramic capacitor FEC 498-737

8 J1, J2, J3, J5, J6, J7, J10, J11 Dual phono connector FEC 128-0670

1 J4 3-pin power block FEC 963-2980

5 J8, J9, J12, J13, J23 3-pin SIL header and shorting link FEC 486-1220 and FEC 148-029

4 R1, R2, R5, R6 10 kΩ SMD resistor FEC 933-0399

4 R3, R4, R7, R8 50 Ω SMD resistor FEC 933-1336

19 T1 to T19 Test point FEC 873-1128

1 U1 ADG788BCPZ Analog Devices, Inc.

ORDERING GUIDE

Model Package Description

EVAL-ADG788EBZ1ADG788 Evaluation Board

1Z = RoHS Compliant Part.

ESD CAUTION

EVAL-ADG788EBZ

Rev. 0 | Page 8 of 8

NOTES

registered trademarks are the property of their respective owners.

EB06756-0-6/07(0)

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