19-2975; Rev 0; 9/03
MAX2394/MAX2395 Evaluation Kits
General Description
The MAX2394/MAX2395 evaluation kits (EV kits) simpli-
fy evaluation of the MAX2394/MAX2395 quasi-direct
modulator ICs for use in WCDMA/UMTS transmitters.
The kit enables testing of the device’s RF performance
and requires no additional support circuitry. The board
includes input BNC connectors and an output SMA
connector to simplify the connection to test equipment.
The MAX2394/MAX2395 EV kits are populated with the
MAX2394 or MAX2395 IC and incorporate input and
output matching components optimized for RF frequen-
cies from 1920MHz to 1980MHz.
Features
o
Easy Evaluation of the MAX2394/MAX2395
o
+2.7V to +3.6V Single-Supply Operation
o
Evaluation Software for PCs
o
Fully Assembled and Tested
Evaluate: MAX2394/MAX2395
Ordering Information
PART
MAX2394EVKIT
MAX2395EVKIT
TEMP RANGE
-40°C to +85°C
-40°C to +85°C
IC PACKAGE
28 QFN
28 QFN
Component List
DESIGNATION
C1, C8, C17,
C18, C29
C2
C3, C4, C5
C6, C7,
C10–C13, C19,
C20, C21, C35
C9, C23, C30
C14
C15
C16
QTY
—
2
3
Open
33pF
±5%
0402 capacitor
Murata GRP1555C1H330J
100pF
±5%
0402 capacitors
Murata GRP1555C1H101J
1000pF
±10%
0402 capacitors
Murata GRP155R71H102K
JP1, JP2
3
1
1
1
0.01µF
±10%
0402 capacitors
Murata GRP155R71C103K
2200pF
±10%
0402 capacitor
Murata GRP155R71H222K
0.022µF
±10%
0402 capacitor
Murata GRP155R71C223K
0.1µF
±10%
0402 capacitor
Murata GRP155R61A104K
10µF
±10%
tantalum capacitors
C case
AVX TAJC106K016
0.1µF
±10%
0603 capacitors
Murata GRM188R71C104K
1.0µF
±10%
0805 capacitor
Murata GRM21BR71C105K
Connector SMA edge mount, round
contact
Johnson 142-0701-801
JP3, JP4,
JP6–JP9
L1
L2
R1
R2–R6
R7, R12
R8, R23, R45
R9
R10, R18
R11, R16, R28,
R48, R50, R51
R13, R22
T3
TP1, TP2, TP3
Y1
2
DESCRIPTION
DESIGNATION
J2
J3, J8, J9, J10
J4, J5
J6, J7
QTY
1
4
—
2
DESCRIPTION
2 x 10 inline header, 100-mil center
Digi-Key S2012-36-ND
Test points
Digi-Key 5000K-ND
Open
BNC connectors
A/D Electronics 580-002-00
1 x 3, 3-pin, inline headers, 100-mil
centers
Digi-Key S1012-36-ND
Open
15nH
±5%
0603 inductor
Coilcraft 0603CS-15NXJB
Open
12kΩ
±1%
0402 resistor
100kΩ
±1%
0402 resistors
Open
1kΩ
±1%
0402 resistors
3.32kΩ
±1%
0402 resistor
39Ω
±5%
0402 resistors
511Ω
±1%
0402 resistors
680Ω
±5%
0402 resistors
Open
Open
19.2MHz volt-control TCXO
Kinseki VC-TCXO-208C3-19P2
10
—
1
—
1
5
—
3
1
2
6
2
—
—
1
C22, C70, C71
3
C24–C28
C32
5
1
J1
3
________________________________________________________________
Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
MAX2394/MAX2395 Evaluation Kits
Evaluate: MAX2394/MAX2395
Component List (continued)
DESIGNATION
U1
U3, U4
QTY
1
2
DESCRIPTION
MAX2394 or MAX2395
Maxim MAX2394EGI/MAX2395EGI
MAX4453 op amps
Maxim MAX4453ESA
36in socket connector ribbon cable,
20 contacts
Digi-Key A3AAG-203G-ND
INTF2300 interface board
Maxim INTF2300
MAX2394/MAX2395 EV kit circuit
board
MAX2394/MAX2395 data sheet
MAX2394/MAX2395 EV kit data
sheet
None
1
None
None
None
None
1
1
1
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 1V
P-P
(MAX2395) or 600mV
P-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.
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.
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.
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.
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 V
CC
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
_______________________________________________________________________________________
MAX2394/MAX2395 Evaluation Kits
Evaluate: MAX2394/MAX2395
Table 1. Test Equipment
EQUIPMENT
WCDMA Signal Generator
Power Supply
Spectrum Analyzer
Multimeter
PC
INTF2300 Interface Board
QTY
1
2
1
1
1
1
DESCRIPTION
Capable of generating WCDMA I/Q signals (HP E4433B or equivalent).
Capable of up to 100mA at +2.7V to +3.3V; another supply to be used for VGC.
Capable of covering the operating frequencies of the device with optional WCDMA
personality (Rhode and Schwarz FSEA20 or equivalent).
(Optional) To measure supply current.
Win®95, Win98, or Win2000 operating systems with parallel port
Supplied with the EV kit
Windows is a registered trademark of Microsoft Corp.
Component Suppliers
SUPPLIER
AVX
Coilcraft
Digi-Key
EFJohnson
Murata
PHONE
803-946-0690
847-639-6400
800-344-4539
402-474-4800
800-831-9172
FAX
803-626-3123
847-639-1469
218-681-3380
402-474-4858
814-238-0490
Note:
Please specify you are using the MAX2394/MAX2395
when contacting these component suppliers.
_______________________________________________________________________________________
3
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