EVAL-ADG936EBZ Datasheet EVAL-ADG936EBZ, EVAL-ADG936REBZ | P1-P2

Evaluation Board for

Wideband CMOS Dual SPDT

EVAL-ADG936EB/EVAL-ADG936REB

Rev. 0

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rights of third parties that may result from its use. Specifications subject to change without notice. No

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FEATURES

Evaluation board for the ADG936/ADG936-R

RF through for board calibration

INTRODUCTION

This application note describes the evaluation board for the

ADG936/ADG936-R wideband switches.

The ADG936/ADG936-R are wideband analog switches that

comprise two independently selectable SPDT switches using a

CMOS process to provide high isolation and low insertion loss

to 1 GHz. The ADG936 is an absorptive/matched dual SPDT

with 50 Ω terminated shunt legs, and the ADG936-R is a

reflective dual SPDT. These devices are designed such that the

isolation is high over the dc to 1 GHz frequency range. They

have on-board CMOS control logic and therefore eliminate the

need for external controlling circuitry. The control inputs are

CMOS compatible.

Full data on the ADG936/ADG936-R is available in the

ADG936/ADG936-R data sheet at

www.analog.com and should

be consulted when using the evaluation board.

OPERATING THE EVAL-ADG936EB/

EVAL-ADG936REB

The ADG936x evaluation board allows designers to evaluate

these high performance wideband switches with a minimum of

effort. To prove that these devices meet the user’s requirements,

the user only requires a power supply and a network analyzer.

EVAL-ADG936R/936EB

EVAL-ADG936R/936EB COMPONENT SIDE VIEW SILKSCREEN

Rev A

GND

RFCA

J12

J1 INA

RF1A

RF1B

RFCB

J10

CAL

RF2B

RF2A

INB

ADG936(R)

06281-001

Figure 1. Evaluation Board Top View

POWER SUPPLIES

To power the EVAL-ADG936EB/EVAL-ADG936REB, supply

the voltage between the V

and GND inputs, J12, for the

analog supply of the ADG936/ADG936-R. V

can range from

1.65 V to 2.75 V.

The control inputs, INA and INB, are applied by the SMB

connectors or can be tied high to V

or low to GND by using

the links (K1 and K2) on board. See

Table 1 for details.

Table 1. Link Operation

INA (K1) RF1A RF2A

L Off On

H On Off

INB (K2) RF1B RF2B

L Off On

H On Off

EVAL-ADG936EB/EVAL-ADG936REB

Rev. 0 | Page 2 of 2

EVAL-ADG936EB/EVAL-ADG936REB

The EVAL-ADG936EB/EVAL-ADG936REB allow designers to

evaluate the high performance wideband switches with a

minimum of effort.

The RFCA port is connected through a 50 Ω transmission line

to a SMA connector, J3, and the RFCB port is connected

through a 50 Ω transmission line to a SMA connector, J4.

RF1A, RF2A, RF1B, and RF2B are connected through 50 Ω

transmission lines to the SMA Connectors J5, J6, J7, and J8,

respectively. A through transmission line connects J9 and J10,

which is used to estimate the loss of the PCB over the

environmental conditions being evaluated (see

Figure 2).

The board is constructed of a 4-layer FR4 material with a dielectric

constant of 4.3 and an overall thickness of 0.062 inches. Two

ground layers with grounded planes provide ground for the RF

transmission lines. The transmission lines were designed using

a coplanar waveguide with a ground plane model using a trace

width of 0.024 inches, a clearance to ground plane of 0.008 inches,

a dielectric thickness of 0.02 inches, and a metal thickness of

0.0021 inches.

Two 10 μF surface-mount tantulum decoupling capacitors are

provided on the V

line, with one placed close to the DUT

along with a 100 pF ceramic capacitor on the V

line.

EVAL-ADG936R/936EB

EVAL-ADG936R/936EB COMPONENT SIDE VIEW SILKSCREEN

Rev A

GND

RFCA

J12

J1 INA

RF1A

RF1B

RFCB

J10

CAL

RF2B

RF2A

INB

ADG936(R)

06281-001

Figure 2. ADG936x Evaluation Board Top View

Table 2. Components Listing

Item Quantity Reference Part Description Supplier/No.

1 2 C1, C2 10 μF, 10 V tantalum capacitors FEC 197-130

2 1 C3 100 pF NPO ceramic capacitor FEC 722-080

3 2 J1, J2 Straight SMB jacks FEC 310-682

4 8 J3, J4, J5, J6, J7, J8, J9, J10 SMA end-launch RF connectors Johnson Components 142-0701-851

5 1 J12 2-pin terminal block FEC 151-785

6 2 K1, K2 JUMPER2\SIP3 FEC 512-047/FEC 150-410

7 1 U1 ADG936/ADG936R Analog Devices, Inc.

ORDERING GUIDE

Model Description

EVAL-ADG936REB Evaluation Board

EVAL-ADG936EB Evaluation Board

ESD CAUTION

registered trademarks are the property of their respective owners.

EB06281-0-9/06(0)

P1-P2

EVAL-ADG936EBZ

Mfr. #:

Buy EVAL-ADG936EBZ

Manufacturer:

Analog Devices Inc.

Description:

RF Development Tools EVAL BRD DG936

Lifecycle:

New from this manufacturer.

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