MAX2023EVKIT+ Maxim Integrated, MAX2023EVKIT+ Datasheet

MAX2023EVKIT+

Manufacturer Part Number

MAX2023EVKIT+

Description

Modulator / Demodulator MAX2023 Evaluation Kit

Manufacturer

Maxim Integrated

Datasheet

1.MAX2023EVKIT.pdf (7 pages)

Specifications of MAX2023EVKIT+

Data Bus Width

16 bit

Interface Type

Direct Launch DAC interface

Modulation Type

Quadrature

Operating Supply Voltage

4.75 V to 5.25 V

Operating Temperature Range

- 40 C to + 85 C

Operating Voltage

4.75 V to 5.25 V

Output Power

5.6 dBm

Supply Current

295 mA

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The MAX2023 EV kit is fully assembled and factory test-

ed. Follow the instructions in the Connections and

Setup section for proper device evaluation as an

upconverter.

This section lists the recommended test equipment to

verify the operation of the MAX2023 as an upconverter.

It is intended as a guide only, and substitutions may be

possible.

•

This section provides a step-by-step guide to testing the

basic functionality of the EV kit as an upconverter. As a

general precaution to prevent damaging the outputs by

driving high VSWR loads, do not turn on DC power or

RF signal generators until all connections are made.

This upconverter procedure is general for operation

with an I/Q baseband input signal at 1MHz. Choose the

test frequency based on the particular system’s fre-

quency plan and adjust the following procedure

accordingly. See Figure 2 for the test setup diagram.

MAX2023 Evaluation Kit

Note: Indicate that you are using the MAX2023 when contacting

these component suppliers.

Johnson

M/A-COM

Murata

SUPPLIER

One DC supply capable of delivering +5.0V and

350mA

One low-noise RF signal generator capable of deliv-

ering 10dBm of output power in the 1GHz to 3GHz

frequency range (i.e., HP 8648)

One I/Q generator capable of producing two differ-

ential 1MHz sine waves, 90° out-of-phase with each

other, with a 2.7V

One quad-channel oscilloscope with a 100MHz

minimum bandwidth

Low-capacitance oscilloscope probes

One RF spectrum analyzer with a 100kHz to 3GHz

frequency range (HP 8561E)

One RF power meter (HP 437B)

One power sensor (HP 8482A)

_______________________________________________________________________________________

507-833-8822

800-366-2266

770-436-1300

PHONE

P-P

Component Suppliers

Test Equipment Required

differential amplitude

Connections and Setup

www.johnsoncomponents.com

www.macom.com

www.murata.com

Quick Start

WEBSITE

1) Calibrate the power meter. For safety margin, use a

2) Connect a 3dB pad to the DUT end of the RF signal

3) Use the power meter to set the RF signal generators

4) Disable the signal generator outputs.

5) Connect the I/Q source to the differential I/Q ports.

6) Connect the LO source to the EV kit LO input.

7) Measure the loss in the 3dB pad and cable that will be

8) Connect this 3dB pad to the EV kit’s RF port con-

9) Set DC supply to +5.0V, and set a current limit

10) Enable the LO and the I/Q sources.

Adjust the center and span of the spectrum analyzer to

1850MHz and 5MHz, respectively. The LO leakage

appears at 1850MHz and there are two sidebands at

1849MHz and 1851MHz (LSB and USB). One of the

sidebands is the selected RF signal, while the second is

the image. Depending on whether the Q channel is 90

degrees advanced or 90 degrees delayed from the

I channel determines which sideband is selected and

power sensor rated to at least +20dBm, or use

padding to protect the power head as necessary.

generators’ SMA cable. This padding improves

VSWR and reduces the errors due to mismatch.

according to the following:

•

Use an oscilloscope to calibrate the baseband I/Q

differential inputs to the following:

•

connected to the RF port. Losses are frequency

dependent, so test this at 1850MHz (the RF frequen-

cy). Use this loss as an offset in all output

power/gain calculations.

nector and connect a cable from the pad to the

spectrum analyzer.

around 350mA, if possible. Disable the output volt-

age and connect the supply to the EV kit (through

an ammeter, if desired). Enable the supply.

Readjust the supply to get +5.0V at the EV kit. A

voltage drop occurs across the ammeter when the

device is drawing current.

LO signal source: 0dBm into DUT at 1850MHz

(this is approximately 3dBm before the 3dB pad).

Use a signal source where I+, I-, Q+, and Q-

are all 50Ω single-ended outputs. Load the I+/I-

ports and Q+/Q- ports with 50Ω differential

loads. Set the voltage across the 50Ω differen-

tial loads to be 2.7V

50Ω differential loads. Note that the DUT’s I+/I-

and Q+/Q- port impedances will provide the

differential loading in Step 10.

Testing the Direct Upconverter

P-P

differential. Remove the

Related parts for MAX2023EVKIT+

MAX2023EVKIT+ Summary of contents

Page 1

MAX2023 Evaluation Kit Component Suppliers SUPPLIER PHONE Johnson 507-833-8822 www.johnsoncomponents.com M/A-COM 800-366-2266 www.macom.com Murata 770-436-1300 www.murata.com Note: Indicate that you are using the MAX2023 when contacting these component suppliers. The MAX2023 EV kit is fully assembled and factory test- ed. ...

Page 2

Note that the sideband suppression is about 45dB typical down from the desired sideband. The desired sideband power level should be approximately +3dBm (+6dBm output power including 3dB pad loss). Phase and amplitude differences at the I ...

Page 3

MAX2023 Evaluation Kit I Q Figure 1. Example Diplexer Network for GSM 1800/1900 Applications As shown in Figure 1, providing an RC termination on each of the I+, I-, Q+, Q- ports reduces the amount of LO leakage present at ...

Page 4

... DIFFERENTIAL I/Q GENERATOR QUAD-CHANNEL OSCILLOSCOPE Figure 2. Test Setup Diagram _______________________________________________________________________________________ MAX2023 Evaluation Kit BENCH MULTIMETER HPIB (HP 34401A) (AMMETER 3dB LO MAX2023EVKIT+ I+ 3dB POWER METER (GIGA 80701A, HP 437B) RF HIGH- POWER SENSOR POWER SUPPLY 3-OUT, HPIB (AG E3631A) 5.0V, 350mA (max ...

Page 5

MAX2023 Evaluation Kit Figure 3. MAX2023 EV Kit Schematic 6 _______________________________________________________________________________________ GND GND GND VCCLOQ2 GND VCCLOQ1 GND GND GND GND GND GND VCCLOI2 GND VCCLOI1 GND GND GND ...

Page 6

Figure 4. MAX2023 EV Kit PCB Layout—Top Silkscreen Figure 6. MAX2023 EV Kit PCB Layout—Top Layer Metal _______________________________________________________________________________________ MAX2023 Evaluation Kit Figure 5. MAX2023 EV Kit PCB Layout—Top Soldermask Figure 7. MAX2023 EV Kit PCB Layout—Inner Layer 2 (GND) 7 ...

Page 7

... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 8 _____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2007 Maxim Integrated Products CARDENAS Figure 9. MAX2023 EV Kit PCB Layout— ...

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