Circuit Note

CN-0248

Rev. 0 | Page 5 of 6

Getting Started

To use the ADL5336 and ADRF6510, the evaluation software is

needed to control various aspects of each part. This software can

be found on the respective product web pages under the Tools,

Software, & Simulations Models link.

Once the software is downloaded and installed, plug in the USB

cables from the computer to the evaluation boards and then run

the software for the part that needs to be controlled.

Functional Block Diagram

Figure 7 shows the functional block diagram of the test setup that

was used for testing the receive chain. The ADL5336 evaluation

board only allows for single-ended input and output. The same

is true for the RF input on the ADL5387 board. The RF output

port on the vector signal generator is only single ended; therefore, a

balun between the generator and the input of the ADL5336 is

necessary. As shown in Figure 7, the rest of the signal path is

differential until the AD8130 difference amplifiers. The differential-

to-signal-ended conversion was needed because the oscilloscope

only allows for sampling of single-ended signals while being

controlled by the VSA software.

Setup and Test

The first step of the setup of the receiver test is to turn on all test

equipment. While the test equipment is warming up, the boards

must be configured correctly for proper use in this signal chain.

On the ADL5336, ensure that the 0 Ω jumper resistors that connect

the VGA1 output to the VGA2 input are populated

On the ADL5387 board, bypass the output baluns for full differential,

dc-coupled signal paths between the ADL5387 and the ADRF6510.

On the ADRF6510 board, do the following:

•

Bypass the input and output baluns

•

Place 1 kΩ differential output loads on the output signal

lines (two 500 Ω resistors to ground will suffice on each

output path)

•

Collect the evaluation boards and connect all the signal paths

together, as shown in Figure 7. Connect all boards to +5 V and

the two AD8130 boards to −5 V as well. Ensure that the power

supply current is consistent with what is expected.

As shown in Figure 7, make the following connections:

•

Connect the single-ended, 50 Ω output of the vector signal

generator to INPUT1 of the ADL5336 evaluation board.

•

Connect the I signal path output of the AD8130 to Input 1

on the oscilloscope, and connect the Q signal path output

of the AD8130 to Input 3 of the oscilloscope.

•

Connect the USB cable from the PC to the oscilloscope.

•

Connect the RF port of the signal generator to the LO

input of the ADL5387 evaluation board.

On the Agilent E4438C signal generator, do the following:

•

Set the frequency to 400 MHz

•

Set the amplitude to 0 dBm

•

Turn the RF port on

On the Agilent E4438C vector signal generator, do the following:

•

Set the RF carrier frequency to 200 MHz

•

Set the amplitude to −30 dBm

•

Turn the RF port on

•

Turn on the custom ARB inside the vector signal generator

•

Set the signal to 4-QAM, symbol rate to 5 MSPS, and pulse

shaping filter alpha to 0.35

On the PC, start the Agilent 89600 VSA software. In the VSA

software, do the following:

•

Turn the digital demodulator on

•

Set the input to the I+ jQ option

•

Set the frequency to 0 Hz, symbol rate to 5 MSPS, and

alpha to 0.35

ADRF6510

I

Q

ADL5387

2xLO

ADL5336

AGILENT E4438C

SIGNAL

GENERATOR

USB

ADL5336

EVALUATION BOARD

ADL5387

EVALUATION BOARD

ADRF6510

EVALUTION BOARD

AD8130

EVALUTION BOARDS

ADL5387-EVALZ

ADRF6510-EVALZ

AD8130-EBZ

AD8130-EBZ

+5V TO ALL BOARDS

–5V TO AD8130 BOARDS

GND TO ALL BOARDS

POWER SUPPLIES

ADL5336-EVALZ

DIV BY 2

0°

90°

AGILENT E4438C

VECTOR SIGNAL

GENERATOR

COMPUTER

AGILENT 89600

VSA SOFTWARE

Figure 7. Functional Block Diagram for Testing Direct Conversion Receiver