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19-2975; Rev 0; 9/03
MAX2394/MAX2395 Evaluation Kits
General Description
The MAX2394/MAX2395 evaluation kits (EV kits) simplify 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 frequencies 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 -40C to +85C -40C to +85C 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 0.01F 10% 0402 capacitors Murata GRP155R71C103K 2200pF 10% 0402 capacitor Murata GRP155R71H222K 0.022F 10% 0402 capacitor Murata GRP155R71C223K 0.1F 10% 0402 capacitor Murata GRP155R61A104K 10F 10% tantalum capacitors C case AVX TAJC106K016 0.1F 10% 0603 capacitors Murata GRM188R71C104K 1.0F 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 12k 1% 0402 resistor 100k 1% 0402 resistors Open 1k 1% 0402 resistors 3.32k 1% 0402 resistor 39 5% 0402 resistors 511 1% 0402 resistors 680 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 terminals 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 50 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 voltage 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 connections 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 3wire bus, routing the SPITM/QSPITM/MICROWIRETM protocol 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 supply 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(R)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
MAX2394/MAX2395 Evaluation Kits Evaluate: MAX2394/MAX2395
GND VCC DB25M 1 2 3
JU1
1
1
TO PC PARALLEL PORT 6
20
10
INTF2300
MAX2394 EV KIT
10
VREG 6
20
GND 1 1
Figure 1. MAX2394/MAX2395 EV Kits PC Board Layout--Solder Side
4
_______________________________________________________________________________________
C16 0.1F R8 1k C15 0.022F R9 3.32k 1 GND
15
C30 0.01F
Figure 2. MAX2394/MAX2395 EV Kits Schematic
2
U1
C23 0.01F C24 0.1F VCC C9 0.01F
R1 12k
MAX2395
R6 100k R16 511
R2 100k R3 100k R4 100k R5 100k
R11 511
R48 511
VCC R23 1k C71 10F
C25 0.1F C26 0.1F C27 0.1F
VEE R22 680 R10 39
R45 1k
R50 511 VCC
R18 39
C70 10F
R13 680
C32 1.0F
C28 0.1F
R51 511
R28 511
VEE
Evaluate: MAX2394/MAX2395
_______________________________________________________________________________________
C22 10F
MAX2394/MAX2395 Evaluation Kits
5
MAX2394/MAX2395 Evaluation Kits Evaluate: MAX2394/MAX2395
Figure 3. MAX2394/MAX2395 EV Kits Component Placement Guide--Component Side 6 _______________________________________________________________________________________
MAX2394/MAX2395 Evaluation Kits Evaluate: MAX2394/MAX2395
1.0"
Figure 4. MAX2394/MAX2395 EV Kits PC Board Layout-- Primary Component Side
1.0"
Figure 5. MAX2394/MAX2395 EV Kits PC Board Layout--Inner Layer 2
1.0"
Figure 6. MAX2394/MAX2395 EV Kits PC Board Layout--Inner Layer 3
1.0"
Figure 7. MAX2394/MAX2395 EV Kits PC Board Layout-- Secondary Component Side
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.
Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 _____________________ 7 (c) 2003 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.
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