Circuit Note

CN-0211

Rev. 0 | Page 5 of 6

VECTOR NETWORK

ANALYZER

VDD

2.5V GND

J4

U6

U5

U4

J5

J12

ADG904-R U1

ADG904-R U2

EVAL-CN0211-EB1Z

Figure 7. Test Setup Functional Block Diagram

Equipment Needed

•

Vector Network Analyzer, Hewlett Packard 8753E

with Hewlett Packard 85033D 3.5 mm Calibration Kit,

or equivalent.

•

EVAL-CN0211-EB1Z Circuit Evaluation Board

•

Power supply (2.5V)

•

Coaxial RF cable with 3.5 mm type connectors

•

Setup and Test

The test setup is shown in Figure 7. The VNA is connected to

the circuit evaluation board through 3.5 mm connector type

cables. Full two port calibration of the VNA to the end of the

cables will be required before testing of the circuit evaluation

board. Table 1 shows the logic states to enable each individual

filter channel.

Table 1. Truth Table for Filter Path Selection

FILTER

EN

ADG904-R

U1

ADG904-R

U2

A0

A1

A0

A1

U6

0

1

0

0

0

U5

0

0

1

1

1

U4

0

0

0

1

0

.

LEARN MORE

CN0211 Design Support Package:

www.analog.com/CN0211-DesignSupport

Corrigan, Theresa, AN-952 Application Note, ADG9xx

Wideband CMOS Switches: Frequently Asked Questions,

Analog Devices.

MT-101 Tutorial, Decoupling Techniques, Analog Devices.