MAX2394EVKIT 查看數據表（PDF） - Maxim Integrated

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比赛名单

MAX2394EVKIT

MAX2394/MAX2395 Evaluation Kits

Maxim Integrated 

MAX2394/MAX2395 Evaluation Kits

Component List (continued)

DESIGNATION

U1

U3, U4

QTY

DESCRIPTION

1 MAX2394 or MAX2395

Maxim MAX2394EGI/MAX2395EGI

2

MAX4453 op amps

Maxim MAX4453ESA

None

36in socket connector ribbon cable,

1 20 contacts

Digi-Key A3AAG-203G-ND

None

1

INTF2300 interface board

Maxim INTF2300

None

None

None

1

MAX2394/MAX2395 EV kit circuit

board

1 MAX2394/MAX2395 data sheet

1

MAX2394/MAX2395 EV kit data

sheet

Quick Start

The MAX2394/MAX2395 EV kits are fully assembled and

factory tested. Follow the instructions in the Connections

and Setup section for proper device evaluation.

Test Equipment Required

Table 1 lists the required test equipment to verify

MAX2394/MAX2395 operation. It is intended as a guide

only, and some substitutions are possible.

Connections and Setup

This section provides a step-by-step guide to operating

the EV kit and testing the device functions. Do not turn

on DC power or RF signal generators until all con-

nections are made:

Testing W-CDMA Operation

1) Install and run the MAX2394/MAX2395 EV kit control

software. The software can be downloaded at

www.maxim-ic.com/techsupport/other.htm.

2) Connect the INTF2300 interface cable to the

MAX2394/MAX2395 EV kit and interface board

(Figure 1).

Note: Pin 1 of the interface cable corresponds to the

red wire. Pin 1 is designated in the silkscreen on

each of the PC boards. The INTF2300 board derives

its power from the MAX2394/MAX2395 EV kits.

3) At startup, set the software registers to the values

given in the MAX2394/MAX2395 data sheet Table 1.

To change the output RF frequency, type the

desired frequency in the Fout box and hit enter to

update the registers.

4) Connect a DC supply set to +2.85V (through an

ammeter if desired) to both VCC and VCC2 termi-

nals on the EV kits. If available, set the current limit

to 100mA.

5) Turn on the DC supply; the supply current should

read approximately 50mA to 80mA. In shutdown

mode, the device draws 5mA (the auxiliary circuitry

on board and the INTF2000 draw current from

VCC2).

6) Set the VGC voltage to 2.0V (J3).

7) Connect a WCDMA baseband signal generator to

the I/Q ports using BNC connectors. Configure the

output for 1VP-P (MAX2395) or 600mVP-P (MAX2394)

into a 50Ω load.

8) Connect the SMA connector to the spectrum analyzer.

Configure the spectrum analyzer to measure ACPR for

reverse-channel WCDMA. Set the center frequency to

1950MHz with a +10dBm reference level.

9) The output power should be approximately 0dBm after

accounting for cable and connector loss. The ACPR at

±5MHz offset should be < -45dBc, and the ACPR at

±10MHz offset should be < -55dBc. Modify the volt-

age on VGC to obtain the desired output power.

Layout

The EV kit’s PC board can serve as a guide for board

layout. Keep PC board trace lengths as short as possible

to minimize parasitics. Also, keep decoupling capacitors

as close to the IC as possible with a direct connection to

the ground plane. Gerber files for the MAX2394/

MAX2395 EV kits are available upon request.

Interface board

The INTF2300 interface board is used to interface 3-

wire bus, routing the SPI™/QSPI™/MICROWIRE™ pro-

tocol from a PC’s parallel port to a device under test.

This board level translates 5V logic from the PC to VCC

of the device under test. The INTF2300 also provides

buffering and EMI filtering. Its absolute maximum sup-

ply voltage is 4.6V, limited by the breakdown of the

buffer IC. The recommended operating supply voltage

range is +2.7V to +3.6V.

SPI and QSPI are trademarks of Motorola, Inc.

MICROWIRE is a trademark of National Semiconductor Corp.

2 _______________________________________________________________________________________

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