Evaluates: MAX5422/MAX5423/MAX5424 19-4171 Rev 0 6/08 MAX5422 Evaluation Kit General Description Features The MAX5422 evaluation kit (EV kit) is an assembled Power-On Recall of Wiper Position from and tested PCB that evaluates the MAX5422 IC. The Nonvolatile Memory MAX5422 is a 50k 256-tap, nonvolatile, linear digital 2.7V to 5.25V Single-Supply Operation potentiometer communicating over SPI. The MAX5422 features an internal nonvolatile EEPROM On-Board USB Interface Circuit for SPI- used to store the potentiometers wiper position for ini- Compatible Signals tialization during power-up. The EEPROM is pro- Proven USB-PC Connection for Power and grammed through the SPI-compatible serial interface, Control (USB Cable Included) communicating at data rates up to 5MHz. The SPI sig- nals can be transmitted through an on-board USB inter- Main Circuit Breakout Board face circuit using a computer or a user-supplied SPI PCB Headers for User-Supplied SPI-Compatible bus along with PCB headers on the EV kit. Signals The EV kit also features Windows 2000/XP/Vista -com- PCB Pads for Potentiometer Signals L, W, and H patible software that provides a professional user inter- face for exercising the MAX5422s features. The program Evaluates the MAX5422ETA/MAX5423ETA/ is menu driven and offers a graphical user interface MAX5424ETA in 3mm x 3mm x 0.8mm, 8-Pin (GUI) complete with buttons, track bars, and spin boxes. TDFN Package The MAX5422 IC is powered from a 3.3V source gener- Windows 2000/XP/Vista (32-Bit)-Compatible ated from the EV kits USB interface circuit, or an exter- Software nal user-supplied 2.7V to 5.25V DC power supply. The MAX5422 section can be broken out from the EV kit, Fully Assembled and Tested allowing the MAX5422 to be attached to the user appli- cations with minimal additional circuit area. Ordering Information The EV kit can also evaluate the MAX5423 (100k ) or MAX5424 (200k ) after IC replacement (U1). The PART TYPE MAX5422 EV kit is shipped with a MAX5422ETA+ MAX5422EVKIT+ EV Kit IC installed. +Denotes lead-free and RoHS compliant. SPI is a trademark of Motorola, Inc. Windows Vista is a registered trademark of Microsoft Corp. Component List DESIGNATION QTY DESCRIPTION DESIGNATION QTY DESCRIPTION 0.1F 10%, 16V X7R ceramic 22pF 5%, 50V C0G ceramic C1, C3C10, capacitors (0603) capacitors (0603) 15 C18, C19 2 C17, C21C25 Murata GRM188R71C104K or Murata GRM1885C1H220J or TDK C1608X7R1C104K TDK C1608C0G1H220J 10F 20%, 6.3V X5R ceramic 3300pF 10%, 50V X7R ceramic capacitors (0805) capacitor (0603) C2, C13, C15 3 C20 1 Murata GRM21BR60J106M or Murata GRM188R71H332K or TDK C2012X5R0J106M TDK C1608X7R1H332K 10pF 5%, 50V C0G ceramic Green LED (0603) D1 1 capacitors (0603) Panasonic LNJ314G8TRA C11, C12 2 Murata GRM1885C1H100J or Not installed, ferrite bead inductor TDK C1608C0G1H100J FB1 0 (0603) 1F 10%, 10V X5R ceramic J1, J2 2 2 x 6-pin headers capacitors (0603) C14, C16, C26 3 JU1, JU2 2 3-pin headers Murata GRM188R61A105K or JU3 1 2-pin header TDK C1608X5R1A105K Maxim Integrated Products 1 For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxims website at www.maxim-ic.com.MAX5422 Evaluation Kit Component List (continued) DESIGNATION QTY DESCRIPTION DESIGNATION QTY DESCRIPTION USB type-B right-angle male 6MHz crystal P1 1 receptacle Y2 1 Hong Kong Xtals SSL6000000E18FAF R1 1 0 5% resistor (0603) 8 Shunts R2 1 220 5% resistor (0603) 1 PCB: MAX5422 Evaluation Kit+ R3 1 10k 5% resistor (0603) *EP = Exposed pad. R4 1 2.2k 5% resistor (0603) R5 1 1.5k 5% resistor (0603) R6, R7 2 27 5% resistors (0603) Component Suppliers 256-tap digital potentiometer (8 TDFN-EP*) SUPPLIER PHONE WEBSITE U1 1 Maxim MAX5422ETA+ Hong Kong 852-35112388 www.hongkongcrystal.com (Top Mark: AIJ) X tals Ltd. 32-bit microcontroller (68 QFN-EP*) Murata El ectronics U2 1 770-436-1300 w w w .mur ata- no rtham er i ca.com Maxim MAXQ2000-RAX+ North America, Inc. U3 1 93C46 type 3-wire EEPROM (8 SO) Panasonic Corp. 800-344-2112 www.panasonic.com U4 1 UART-to-USB converter (32 TQFP) TDK Corp. 847-803-6100 www.component.tdk.com 3.3V regulator (5 SC70) Note: Indicate that you are using the MAX5422, MAX5423, or U5 1 Maxim MAX8511EXK33+ MAX5424 when contacting these component suppliers. (Top Mark: AEI) 2.5V regulator (5 SC70) U6 1 Maxim MAX8511EXK25+ MAX5422 EV Kit Files (Top Mark: ADV) Dual 1.8V to 5V level translator FILE DESCRIPTION U7 1 (8 SSOP) INSTALL.EXE Install s the EV ki t fil es on the com p uter Single 1.8V to 5V level translator U8 1 MAX5422.EXE Application program (6 SOT23) FTD2XX.INF USB driver file 16MHz crystal UNINST.INI Uninstalls the EV kit software Y1 1 Hong Kong Xtals USB Driver Help.PDF USB driver installation help file SSM1600000E18FAF Procedure Quick Start The MAX5422 EV kit is fully assembled and tested. Required Equipment Follow the steps below to verify board operation: Before beginning, the following equipment is needed: 1) Visit www.maxim-ic.com/evkitsoftware to download MAX5422 EV kit (USB cable included) the latest version of the EV kit software, 5422Rxx.ZIP. Save the EV kit software to a tempo- A user-supplied Windows 2000/XP/Vista PC with a rary folder and uncompress the ZIP file. USB spare port 2) Install the EV kit software on the computer by One ohmmeter running the INSTALL.EXE program inside the Note: In the following sections, software-related items temporary folder. The program files are copied are identified by bolding. Text in bold refers to items and icons are created in the Windows Start directly from the EV kit software. Text in bold and under- Programs menu. lined refers to items from the Windows operating system. 2 Evaluates: MAX5422/MAX5423/MAX5424