Analog Devices EVAL-ADG788EBZ User manual

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: [phone] www.analog.com
Fax: [phone] ©2007 Analog Devices, Inc. All rights reserved.
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.

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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

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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
J8
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
J9
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

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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
V
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.

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EVALUATION BOARD SCHEMATICS AND ARTWORK
J4-1
J4-3
J4-2
T8
V
SS
V
DD
T9
T10
C3
10µF
C4
10µF
+
+
J23
3
2
1
AB
CASE
CASE
GND
TOP
BOTTOM
PHONO_DUAL
J1
1
4
5
2
3
CASE
CASE
GND
TOP
BOTTOM
PHONO_DUAL
J2
1
4
5
2
3
CASE
CASE
GND
TOP
BOTTOM
PHONO_DUAL
J3
1
4
5
2
3
CASE
CASE
GND
TOP
BOTTOM
PHONO_DUAL
J5
1
4
5
2
3J9
3
2
V
DD 1
AB
J8
T6
8
9
10
7
6
5
4
3
2
1
IN2
IN3
NC
S2A
D2
S2B
GND
V
SS
V
SS
S1B
D1
S3B
D3
S3A
V
DD
S4B
D4
S4A
IN4
IN1
S1A
13
12
11
14
15
16
17
18
19
20
T7
3
2
V
DD
1
AB
U1
ADG788
T4
T5
T3
C1
0.1µF
T1
T2
T19
T18
T17
T16
T15
T14
V
DD
T13
T12
T11
C2
0.1µF
R4
50Ω
R3
50Ω
R1
10kΩ
R2
10kΩ
V
DD
J12
J13
3
2
1
AB
V
DD
3
2
1
AB
R5
10kΩ
R6
10kΩ
R7
50Ω
R8
50Ω
CASE
CASE
TOP
GND
BOTTOM
PHONO_DUAL
J11
3
2
3
2
2
2
4
5
1
CASE
CASE
TOP
GND
BOTTOM
PHONO_DUAL
J10
4
5
1
3CASE
CASE
TOP
GND
BOTTOM
PHONO_DUAL
J7
4
5
1
3CASE
CASE
TOP
GND
BOTTOM
PHONO_DUAL
J6
4
5
1
0
6756-002
Figure 2. Evaluation Board Schematic

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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

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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
©2007 Analog Devices, Inc. All rights reserved. Trademarks and
registered trademarks are the property of their respective owners.
EB06756-0-6/07(0)