19-2975; Rev 0; 9/03 MAX2394/MAX2395 Evaluation Kits Features ♦ Easy Evaluation of the MAX2394/MAX2395 ♦ +2.7V to +3.6V Single-Supply Operation ♦ Evaluation Software for PCs ♦ Fully Assembled and Tested Ordering Information PART TEMP RANGE IC PACKAGE MAX2394EVKIT -40°C to +85°C 28 QFN MAX2395EVKIT -40°C to +85°C 28 QFN Component List DESIGNATION QTY DESCRIPTION C1, C8, C17, C18, C29 — Open C2 2 33pF ±5% 0402 capacitor Murata GRP1555C1H330J C3, C4, C5 3 100pF ±5% 0402 capacitors Murata GRP1555C1H101J C6, C7, C10–C13, C19, C20, C21, C35 10 C9, C23, C30 3 0.01µF ±10% 0402 capacitors Murata GRP155R71C103K 1 2200pF ±10% 0402 capacitor Murata GRP155R71H222K C14 0.022µF ±10% 0402 capacitor Murata GRP155R71C223K C16 1 0.1µF ±10% 0402 capacitor Murata GRP155R61A104K C22, C70, C71 3 10µF ±10% tantalum capacitors C case AVX TAJC106K016 C24–C28 5 QTY DESCRIPTION J2 1 2 x 10 inline header, 100-mil center Digi-Key S2012-36-ND J3, J8, J9, J10 4 Test points Digi-Key 5000K-ND J4, J5 — Open J6, J7 2 BNC connectors A/D Electronics 580-002-00 JP1, JP2 2 1 x 3, 3-pin, inline headers, 100-mil centers Digi-Key S1012-36-ND JP3, JP4, JP6–JP9 — Open L1 1 15nH ±5% 0603 inductor Coilcraft 0603CS-15NXJB 1000pF ±10% 0402 capacitors Murata GRP155R71H102K 1 C15 DESIGNATION 0.1µF ±10% 0603 capacitors Murata GRM188R71C104K C32 1 1.0µF ±10% 0805 capacitor Murata GRM21BR71C105K J1 3 Connector SMA edge mount, round contact Johnson 142-0701-801 L2 — Open R1 1 12kΩ ±1% 0402 resistor R2–R6 5 100kΩ ±1% 0402 resistors Open R7, R12 — R8, R23, R45 3 1kΩ ±1% 0402 resistors R9 1 3.32kΩ ±1% 0402 resistor R10, R18 2 39Ω ±5% 0402 resistors R11, R16, R28, R48, R50, R51 6 511Ω ±1% 0402 resistors R13, R22 2 680Ω ±5% 0402 resistors T3 — Open TP1, TP2, TP3 — Open Y1 1 19.2MHz volt-control TCXO Kinseki VC-TCXO-208C3-19P2 ________________________________________________________________ Maxim Integrated Products 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. 1 Evaluate: MAX2394/MAX2395 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. Evaluate: MAX2394/MAX2395 MAX2394/MAX2395 Evaluation Kits Component List (continued) DESIGNATION QTY DESCRIPTION U1 1 MAX2394 or MAX2395 Maxim MAX2394EGI/MAX2395EGI U3, U4 2 MAX4453 op amps Maxim MAX4453ESA None 1 36in socket connector ribbon cable, 20 contacts Digi-Key A3AAG-203G-ND None 1 INTF2300 interface board Maxim INTF2300 None 1 MAX2394/MAX2395 EV kit circuit board None 1 MAX2394/MAX2395 data sheet None 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 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. 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 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 voltage 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 3wire bus, routing the SPI™/QSPI™/MICROWIRE™ 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 QTY DESCRIPTION WCDMA Signal Generator 1 Capable of generating WCDMA I/Q signals (HP E4433B or equivalent). Power Supply 2 Capable of up to 100mA at +2.7V to +3.3V; another supply to be used for VGC. Spectrum Analyzer 1 Capable of covering the operating frequencies of the device with optional WCDMA personality (Rhode and Schwarz FSEA20 or equivalent). Multimeter 1 (Optional) To measure supply current. PC 1 Win®95, Win98, or Win2000 operating systems with parallel port INTF2300 Interface Board 1 Supplied with the EV kit Windows is a registered trademark of Microsoft Corp. Component Suppliers PHONE FAX AVX SUPPLIER 803-946-0690 803-626-3123 Coilcraft 847-639-6400 847-639-1469 Digi-Key 800-344-4539 218-681-3380 EFJohnson 402-474-4800 402-474-4858 Murata 800-831-9172 814-238-0490 Note: Please specify you are using the MAX2394/MAX2395 when contacting these component suppliers. _______________________________________________________________________________________ 3 Evaluate: MAX2394/MAX2395 MAX2394/MAX2395 Evaluation Kits GND VCC JU1 DB25M 1 2 3 1 1 TO PC PARALLEL PORT 20 6 10 INTF2300 MAX2394 EV KIT 10 VREG 20 6 GND 1 1 Figure 1. MAX2394/MAX2395 EV Kits PC Board Layout—Solder Side 4 _______________________________________________________________________________________ R1 12kΩ C30 0.01µF C22 10µF 15 2 1 GND U1 R2 100kΩ MAX2395 R3 100kΩ C28 0.1µF C26 0.1µF R4 100kΩ C27 0.1µF C25 0.1µF R5 100kΩ R6 100kΩ C9 0.01µF R51 511Ω R8 1kΩ VEE R50 511Ω C23 0.01µF R9 3.32kΩ C15 0.022µF VCC VCC C24 0.1µF R28 511Ω R11 511Ω VEE R18 39Ω R45 1kΩ R48 511Ω C70 10µF VCC R13 680Ω R22 680Ω R16 511Ω C32 1.0µF R23 1kΩ C71 10µF R10 39Ω Evaluate: MAX2394/MAX2395 C16 0.1µF MAX2394/MAX2395 Evaluation Kits Figure 2. MAX2394/MAX2395 EV Kits Schematic _______________________________________________________________________________________ 5 Evaluate: MAX2394/MAX2395 MAX2394/MAX2395 Evaluation Kits Figure 3. MAX2394/MAX2395 EV Kits Component Placement Guide—Component Side 6 _______________________________________________________________________________________ MAX2394/MAX2395 Evaluation Kits 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 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 © 2003 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products. Evaluate: MAX2394/MAX2395 1.0"