ADL5902ACPZ-R7 datasheet(24/28 Pages) AD

24 / 28 page

ADL5902

Rev. 0 | Page 24 of 28

–6

–5

–4

–3

–2

–1

0.25

0.50

0.75

1.00

1.25

1.50

1.75

2.00

2.25

2.50

2.75

3.00

–50

–40

–30

–20

–10

7GHz

8GHz

9GHz

PIN (dBm)

Figure 52. Typical VOUT and Log Conformance Error at 7 GHz, 8 GHz,

and 9 GHz, 25°C Only

LOW FREQUENCY PERFORMANCE

The lowest frequency of operation of the ADL5902 is approxi-

mately 50 MHz. This is the result of the circuit design and

architecture of the ADL5902.

DESCRIPTION OF CHARACTERIZATION

The general hardware configuration used for most of the

ADL5902 characterization is shown in Figure 53. The ADL5902

was driven in a single-ended configuration for most character-

ization, except where noted.

Much of the data was taken using an Agilent E4438C signal

source as a RF input stimulus. Several ADL5902 devices

mounted on circuit boards constructed of Rodgers 3006

material were put into a test chamber simultaneously, and a

Keithley S46 RF switching network connected the signal source

to the appropriate device under test. The test chamber

temperature was set to cycle over the appropriate temperature

range. The signal source, switching, and chamber temperature

were all controlled by a PC running Agilent VEE Pro.

The subsequent response to stimulus was measured with a

voltmeter and the results stored in a database for analysis later.

In this way, multiple ADL5902 devices were characterized over

amplitude, frequency, and temperature in a minimum amount

of time. The RF stimulus amplitude was calibrated up to the

circuit board that carries the ADL5902, and, thus, it does not

account for the slight losses due to the connector on the circuit

board that carries the ADL5902 nor for the loss of traces on the

circuit board. For this reason, there is a small absolute amplitude

error (generally <0.5 dB) not accounted for in the characteriza-

tion data, but this is generally not important because the

ADL5902’s relative accuracy is unaffected.

ADL5902

CHARACTERIZ ATION

BOARD – TEST SITE 1

ADL5902

CHARACTERIZ ATION

BOARD – TEST SITE 2

KEITHLEY S46

MICROWAVE

SWITCH

AGILENT E8251A

MICROWAVE

SIGNAL

GENERATOR

AGILENT 34980A

SWITCH MATRIX/

DC METER

AGILENT E3631A

DC POWER

SUPPLIES

PERSONAL

COMPUTER

ADL5902

CHARACTERIZ ATION

BOARD – TEST SITE 3

DATA AND CONTRO L

Figure 53. General Characterization Configuration

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