Evaluates: MAX2659 19-0947 Rev 0 8/07 MAX2659 Evaluation Kit General Description Features The MAX2659 evaluation kit (EV kit) simplifies evalua- Easy Evaluation of the MAX2659 IC tion of the MAX2659 GPS/GNSS low-noise amplifier 1.6V to 3.3V Single-Supply Operation (LNA). The MAX2659 high-gain, LNA is designed for GPS, Galileo, and GLONASS applications. The EV kit RF Input and Output Matched to 50 enables testing of the devices performance and Jumper Included for Shutdown Setting requires no additional support circuitry. The MAX2659 EV kit is fully assembled with the MAX2659 IC on-board Fully Assembled and Tested and incorporates input matching components to opti- mize performance. The EV kits signal inputs and out- Ordering Information puts use SMA connectors to facilitate the connection of RF test equipment. PART TEMP RANGE IC PACKAGE MAX2659EVKIT+ -40C to +85C 6 DFN +Denotes a lead-free and RoHS-compliant EV kit. Component List DESIGNATION QTY DESCRIPTION DESIGNATION QTY DESCRIPTION PC mini-red test points 470pF 10% ceramic capacitor JU2, JU3 2 Keystone 5000 C1 1 (0402) Murata GRM155R71H471K 6.8nH 5% inductor (0402) L1 1 Murata LQW15AN6N8H00 39pF 5% capacitors (0402) C2, C4 2 Murata GRM1555C1H390J SMA edge-mount connectors, P1, P2 2 round contact 0.033F 10% ceramic capacitors Johnson 142-0701-801 C3, C5 2 (0402) Murata GRM155R71A333K P3 0 Not installed R1, R2 2 0 5% resistors (0402) 10F 10% tantalum capacitor (C C6 1 case) R4 1 10k 5% resistor (0402) AVX TAJC106K016 MAX2659ELT+ GPS LNA (6-pin U1 1 DFN, 1.5mm x 1mm x 0.75mm) 0.01F 10% ceramic capacitor 1 PCB: MAX2659 Evaluation Kit+ C7 1 (0402) Murata GRM155R71C103K Component Suppliers 1 x 3-pin header, 3in inline header, JU1 1 100-mil centers SUPPLIER PHONE WEBSITE Sullins PEC36SAAN AVX Corp. 843-946-0238 www.avxcorp.com Murata Mfg. Co., Ltd. 770-436-1300 www.murata.com Note: Indicate that you are using the MAX2659 when contacting these component suppliers. 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.MAX2659 Evaluation Kit 2) Connect the RF signal generator to the RFIN SMA Quick Start connector. Do not turn on the generators output. Required Equipment Set the output of the RF signal generator to An RF signal generator capable of delivering RF 1575.42MHz and power level to -40dBm. power as high as 0dBm at the 1575.42MHz operating 3) Connect a spectrum analyzer to the RFOUT SMA frequency, such as the HPE4433B or equivalent connector. Set the center frequency to An RF spectrum analyzer that covers the MAX2659 1575.42MHz, reference level to 0dBm, and span to operating frequency range, as well as a few harmon- 1MHz. ics, such as the FSEB20 or equivalent 4) Turn on the DC power supply. The supply current One DC power supply capable of up to 50mA at 1.6V should read approximately 4.1mA. to 3.3V 5) Enable the RF generators output. The spectrum Power meter capable of measuring up to 0dBm analyzer displays a tone at 1575.42MHz at approxi- mately -20dBm. One ammeter to measure the supply current (option- al) Layout Issues A noise figure meter (optional) A good printed-circuit board (PCB) is an essential part A network analyzer for measuring gain and return of RF circuit design. The EV kit PCB can serve as a loss (optional) guide for laying out a board using the MAX2659. Use controlled impedance lines on all high-frequency inputs Connections and Setup and outputs. Bypass V with decoupling capacitors CC The MAX2659 EV kit is fully assembled and tested. located close to the device. For long V lines, it may CC Follow the steps below for a step-by-step guide to be necessary to add decoupling capacitors. Locate operating the EV kit and testing the device functions. these additional capacitors farther away from the Connect pin 1 to pin 2 of JP1 to enable the device. device package. This minimizes supply coupling. Caution: Do not turn on the DC power or RF signal Proper grounding of the GND pins is essential. Connect generators until all connections are completed. the GND pins to the ground plane either directly, or 1) Connect a DC supply set to +2.85V to the V and CC through vias, or both. GND terminals (through an ammeter, if desired) on the EV kit. Do not turn on the supply. Figure 1. MAX2659 EV Kit Schematic 2 Evaluates: MAX2659