MAX2112 MAX2112EVKIT PEC36SAAN GRM1885C1H101J 31-5329-52RFX GRM188R71E333K - Datasheet Archive
MAX2112 Evaluation Kit The MAX2112 evaluation kit (EV kit) simplifies the testing and evaluation of the MAX2112 direct-conversion
19-2071; Rev 0; 11/07 MAX2112 MAX2112 Evaluation Kit The MAX2112 MAX2112 evaluation kit (EV kit) simplifies the testing and evaluation of the MAX2112 MAX2112 direct-conversion tuner. The evaluation kit is fully assembled and tested at the factory. Standard 50 SMA and BNC connectors are included on the EV kit for the inputs and outputs to allow quick and easy evaluation on the test bench. This document provides a list of equipment required to evaluate the device, a straightforward test procedure to verify functionality, a description of the EV kit circuit, the circuit schematic, a component list for the kit, and artwork for each layer of the printed-circuit board (PCB). Features o o o o o o o o Easy Evaluation of the MAX2112 MAX2112 50 RF Input SMA Connector 50 Baseband Output BNC Connector Single 3.3V ±5% Supply I2C 2-Wire Serial Interface All Critical Peripheral Components Included Fully Assembled and Tested PC Control Software (available at www.maxim-ic.com/evkitsoftware) Ordering Information PART TEMP RANGE IC PACKAGE 0°C to +70°C* 28 Thin QFN-EP* MAX2112EVKIT MAX2112EVKIT+ +Denotes lead-free and RoHS-compliant. *This limited temperature range applies to the EV kit PCB only. The MAX2112 MAX2112 IC temperature range is -40°C to +85°C. *EP = Exposed paddle. Component List DESIGNATION QTY DESCRIPTION ADDR 0 Not installed, 3-pin (1 x 3) inline header, 0.01in centers Sullins PEC36SAAN PEC36SAAN BB_I_O/P, BB_Q_O/P 2 BB_IN, BB_IP, BB_QN, BB_QP, CP_OUT, J12, J13, J17, REF_O/P, VGC DESIGNATION QTY C14 1 100pF ±5% ceramic capacitor (0603) Murata GRM1885C1H101J GRM1885C1H101J 50 BNC PC mount Amphenol 31-5329-52RFX 31-5329-52RFX C15 1 0.033µF ±10% ceramic capacitor (0603) Murata GRM188R71E333K GRM188R71E333K 10 PC mini red test points Keystone 5000 C16 1 2200pF ±5% ceramic capacitor (0603) Murata GRM188R71H222J GRM188R71H222J C1C6, C9 7 1000pF ±10% ceramic capacitors (0603) Murata GRM188R71H102K GRM188R71H102K C17, C18 2 10µF ±10% tantalum capacitors (C Case) AVX TAJC016K016 TAJC016K016 C7, C13, C19, C20, C75 0.1µF ±10% ceramic capacitors (0603) Murata GRM188R71C104K GRM188R71C104K C22 1 5 43.2 ±1% resistor (0603); use lead-free parts only C23, C24, C71, C72, C73 5 330pF ±5% ceramic capacitors (0603) Murata GRM1885C1H331J GRM1885C1H331J J6 1 DB25 right-angle male connector AMP 5747238-4 C8, C12, C25C30 0 Not installed, capacitors C10, C11 2 0.047µF ±10% ceramic capacitors (0603) Murata GRM188R71C473K GRM188R71C473K DESCRIPTION _ Maxim Integrated Products For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim's website at www.maxim-ic.com. 1 Evaluates: MAX2112 MAX2112 General Description MAX2112 MAX2112 Evaluation Kit Evaluates: MAX2112 MAX2112 Component List (continued) DESIGNATION QTY JP_VCC, VCC_BB, VCC_DIG, VCC_LO, VCC_RF1, VCC_RF2, VCC_SYN, VCC_VCO 0 L1 1 DESCRIPTION DESIGNATION QTY DESCRIPTION Not installed, SMA edge-mount connector, round contact Johnson 142-0701-801 1 SMA edge-mount connector, round contact Johnson 142-0701-801 1 Maxim DVBS tuner MAX2112ETI MAX2112ETI+ (28-pin thin QFN-EP) 0 Not installed, Maxim single-supply op amps with R2R outputs Maxim MAX4453ESA MAX4453ESA U3 1 74LV07A 74LV07A hex buffer/driver OC TI SN74LV07ADR SN74LV07ADR U5 0 Not installed, Maxim open I/O comparator MAX985 MAX985 Y1 1 27MHz crystal Citizen America 300-8571-1-ND 300-8571-1-ND Digi-Key HCM49-27 HCM49-27.000MABJ-UT 000MABJ-UT 1000pF±10% capacitor (0603) Murata GRM188R71H102K GRM188R71H102K Not installed, resistors R3, R7, R15, R16, R17, R21 6 0 ±5% resistors (0603); use lead-free parts only R4, R13, R24 3 1k ±5% resistors (0603); use lead-free parts only R5 1 820 ±5% resistor (0603); use lead-free parts only R6 1 390 ±5% resistor (0603); use lead-free parts only 1 86.6 ±1% resistor (0603); use lead-free parts only R9, R10, R11, R41, R42 5 100 ±1% resistors (0603); use lead-free parts only R14, R43 2 5.1k ±5% resistors (0603); use lead-free parts only R23, R26 2 0.1µF ±10% ceramic capacitors (0603) Murata GRM188R71C104K GRM188R71C104K R8 2 0 U1 0 REF_INPUT RF_INPUT Not installed, 2-pin (1 x 2) inline headers, 0.01in centers Sullins PEC36SAAN PEC36SAAN 2 U2, U4 R2, R12, R18, R19, R20, R22, R25, R27R33 R46, R47 2.7k ±5% resistors (0603); use lead-free parts only - 0 - 1 Not installed, shunts (JP_VCC, VCC_BB, VCC_DIG, VCC_LO, VCC_RF1, VCC_RF2, VCC_SYN, VCC_VCO) Shorting jumpers, 2 position Sullins SSC02SYAN SSC02SYAN PCB: MAX2112/20 MAX2112/20 Evaluation Kit+ _ MAX2112 MAX2112 Evaluation Kit SUPPLIER PHONE FAX 800-522-6752 AMP/Tyco Electronics - www.tycoelectronics.com WEBSITE www.amphenolrf.com Amphenol RF 800-627-7100 - AVX Corp. 843-448-9411 843-448-7139 www.avxcorp.com Digi-Key Corp. 800-344-4539 218-681-3380 www.digikey.com Johnson Components 507-833-8822 - www.johnsoncomponents.com Keystone Electronics Corp. 209-796-2032 - www.keyelco.com Maxim Integrated Products, Inc. 888-629-4642 800-992-1884 www.maxim-ic.com Murata Mfg. Co., Ltd. 770-436-1300 770-436-3030 www.murata.com Sullins Electronics Corp. 760-744-0125 760-744-6081 www.sullinselectronics.com Texas instruments 800-336-5236 - www.ti.com Note: Indicate that you are using the MAX2112 MAX2112 when contacting these component suppliers. Quick Start Test Equipment Required Before beginning, the following equipment is needed: · One dual-output power supply capable of supplying up to 3.3V at > 160mA for VCC and 3V at > 50µA for VGC1 gain control voltage · One RF signal generator capable of delivering at least 0dBm of output power at frequencies up to 2.175GHz · One RF spectrum analyzer capable of covering the operating frequency range of the device · One PC (486DX33 486DX33 or better) with Windows® 95/98/2000/NT 95/98/2000/NT 4.0/XP or later operating system, 64MB of memory, and an available parallel port · One 25-pin parallel cable · One multichannel digital oscilloscope (optional) source to a 75 input. Note that the input power to the device must be adjusted to account for the -6dB power loss of the matching resistor network. Connections and Setup This section provides a step-by-step guide to testing the basic functionality of the EV kit in UHF mode. Caution: Do not turn on DC power or RF signal generators until all connections are completed. 1) Verify that all jumpers are in place. 2) With its output disabled, connect the DC power supply to VGC1 set to 0.5V (maximum gain). 3) With its output disabled, set the DC power supply to 3.3V. Connect the power supply to the V CC (through an ammeter if desired) and GND terminals on the EV kit. If available, set the current limit to 200mA. 4) The MAX2112 MAX2112 EV kit is fully assembled and factory tested. Follow the instructions in the Connections and Setup section for proper device evaluation. With its output disabled, set the RF signal generator to a 955MHz frequency at -69dBm to account for the 6dB resistive pad loss. When measuring noise figure, this 6dB must also be accounted for by subtracting 6dB from the measured noise figure, unless the pad has been removed. 5) Measurement Considerations The MAX2112 MAX2112 EV kit includes on-board matching circuitry at the MAX2112 MAX2112 RF input to convert the 50 Connect the output of the RF signal generator to the SMA connector labeled RF_INPUT on the evaluation board. 6) Connect a 25-pin parallel cable between the PC's parallel port and the MAX2112 MAX2112 evaluation board. · One network analyzer to measure return loss (optional) · One ammeter to measure supply current (optional) Procedure Windows is a registered trademark of Microsoft Corp. _ 3 Evaluates: MAX2112 MAX2112 Component Suppliers Evaluates: MAX2112 MAX2112 MAX2112 MAX2112 Evaluation Kit 7) Turn on the 3.3V VCC power supply, followed by the 3V gain-control power supply. The supply current from the 3.3V VCC supply should read approximately 100mA, and the supply current from the 3V VGC1 should read approximately 50µA. Be sure to adjust the power supply to account for any voltage drop across the ammeter. 8) Install and run the MAX2112 MAX2112 control software. Software is available for download on the Maxim website at www.maxim-ic.com/evkitsoftware. 9) Load the default register settings from the control software by clicking Edit: Load Defaults. Set ICP = 1 and BBG[3:0] = 1011. 10) Connect the output to a spectrum analyzer or an oscilloscope. 11) Enable the RF signal generator's output. 12) Activate and set the power level of the RF generator to achieve 1VP-P at the baseband BNC connector outputs. Layout Considerations The MAX2112 MAX2112 EV kit can serve as a guide for PCB layout. Keep RF signal lines as short as possible to minimize losses and radiation. Use controlled impedance on all high-frequency traces. The exposed paddle must be soldered evenly to the board's ground plane for proper operation. Use abundant vias beneath the exposed paddle for maximum heat dissipation. Use abundant ground vias between RF traces to minimize undesired coupling. To minimize coupling between different sections of the IC, the ideal power-supply layout is a star configuration, which has a large decoupling capacitor at the central VCC node. The VCC traces branch out from this node, with each trace going to separate V CC pins of the MAX2112 MAX2112. Each VCC pin must have a bypass capacitor with a low impedance to ground at the frequency of interest. Do not share ground vias among multiple connections to the PCB ground plane. 13) Check the I/Q outputs. 14) Observe the baseband output at 5MHz with 1VP-P. 4 _ MAX2112 MAX2112 Evaluation Kit REFOUT XTAL QOUT+ VCC_DIG IOUT+ QOUT- IDC+ IOUT- Evaluates: MAX2112 MAX2112 IDCQDC+ VCCSYN QDC- CPOUT VCC_BB GNDSYN VCOBYP VCC_VCO VCC_LO GC1 RFIN GND ADDR VCC_RF1 SCL VTUNE VCC_RF2 SDA GNDTUNE Figure 1. MAX2112 MAX2112 EV Kit Schematic _ 5 Evaluates: MAX2112 MAX2112 MAX2112 MAX2112 Evaluation Kit Figure 2. MAX2112 MAX2112 EV Kit PCB Layout-Component Placement Guide 6 _ MAX2112 MAX2112 Evaluation Kit Evaluates: MAX2112 MAX2112 Figure 3. MAX2112 MAX2112 EV Kit PCB Layout-Top Figure 4. MAX2112 MAX2112 EV Kit PCB Layout-Bottom _ 7 Evaluates: MAX2112 MAX2112 MAX2112 MAX2112 Evaluation Kit Figure 5. MAX2112 MAX2112 EV Kit PCB Layout-Top Soldermask 8 _ MAX2112 MAX2112 Evaluation Kit Evaluates: MAX2112 MAX2112 Figure 6. MAX2112 MAX2112 EV Kit PCB Layout-Bottom Soldermask 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 _ 9 © 2007 Maxim Integrated Products is a registered trademark of Maxim Integrated Products, Inc.