Evaluates: MAX3521 MAX3521 Evaluation Kit General Description Features The MAX3521 evaluation kit (EV kit) simplifies the testing Easy Evaluation of the MAX3521 and evaluation of the MAX3521 DOCSIS 3.0 upstream 50 SMA Connectors amplifier. The EV kit is fully assembled and tested at the All Critical Peripheral Components Included factory. Standard 50 SMA connectors are included on the EV kit for the inputs and outputs to allow quick and Proven PCB Layout easy evaluation on the test bench. Fully Assembled and Tested This document provides a list of equipment required to PC Control Software evaluate the device, a straightforward test procedure to (Available at www.maximintegrated.com) verify functionality, a description of the EV kit circuit, the circuit schematic, a list of components for the EV kit, and Ordering Information appears at end of data sheet. artwork for each layer of the PCB. Component List DESIGNATION QTY DESCRIPTION DESIGNATION QTY DESCRIPTION Ferrite beads (0805) PC mini red test point B1, B2 2 JP3 (+5V) 1 Murata BLM21AG601SN1 Keystone 5000 Ferrite bead 1206, PC mini black test point B3 1 JP4 (GND) 1 Murata BLM31PG121SN1 Keystone 5001 R1 1 100k 5% resistor (0603) 0.01F 10% ceramic capacitors C1C4, C8 5 (0603) R2, R6 2 100 1% resistors (0603) Murata GRM188R71H103K R3 1 43.2 1% resistor (1206) R4 1 86.6 1% resistor (1206) 5.6pF 0.1pF ceramic capacitors C5, C9 2 (0603) R5, R7 2 37.4 1% resistors (0603) Murata GRM1885C1H5R6B SMA end-launch jack receptacles RFIN, RFOUT 2 Emerson (Johnson) 142-0701-801 10F 10% ceramic capacitor C6 1 (0805) 1:4 transformer T1 1 Murata GRM21BR61A106K TOKO 617PT-1664 1:2 transformer 0.1F 10% ceramic capacitor T2 1 TOKO 617PT-2270 C7 1 (0402) Murata GRM155R71A104K DOCSIS 3.0 upstream amplifier U1 1 (20 TQFN-EP*) 10pF 5% ceramic capacitors Maxim MAX3521ETP+ C10, C11 2 (0603) Murata GRM1885C1H100J PCB: MAX3521 EVALUATION 1 KIT 20-pin (2 x 10) dual inline header JP2 1 Sullins PEC36DAAN *EP = Exposed pad. 19-6774 Rev 1 6/16Evaluates: MAX3521 MAX3521 Evaluation Kit Component Suppliers SUPPLIER PHONE WEBSITE Emerson Network Power 507-833-8822 www.emersonnetworkpower.com Keystone Electronics Corp. 800-221-5510 www.keyelco.com Murata Americas 800-241-6574 www.murataamericas.com Sullins Electronics Corp. 760-545-6700 www.sullinselectronics.com TOKO America, Inc. 847-297-0070 www.tokoam.com Note: Indicate that you are using the MAX3521 when contacting these component suppliers. 3) With its output disabled, set the DC power supply to Quick Start +5V. Connect the power supply to the +5V (through Test Equipment Required an ammeter if desired) and GND terminals on the EV Power supply capable of supplying at least 750mA kit. If available, set the current limit to 650mA. at +5V 4) With its output disabled, set the other DC power- Power supply capable of supplying at least 5mA at supply voltage to +3.3V. Connect the power supply +3.3V (sets logic level on INTF3000+ interface board) to the VPULL and GND terminals on the INTF3000+ interface board. RF signal generator capable of delivering at least -10dBm of output power at 40MHz frequency 5) With its output disabled, set the RF signal generator (e.g., HP8482A or equivalent) to a 40MHz frequency and a -20dBm power level. Connect the output of the RF signal generator to the RF spectrum analyzer capable of covering the SMA connector labeled RFIN on the evaluation board. operating frequency range of the device 6) Install and run the MAX3521 EV kit software, available Windows PC with a spare USB port for download HERE. USB cables 7) Turn on the +3.3V power supply, followed by the 50 SMA cables +5V power supply. The supply current from the +5V (Optional) Multichannel digital oscilloscope supply should read approximately 5mA. Be sure to adjust the power supply to account for any voltage (Optional) Network analyzer to measure return loss drop across the ammeter. (Optional) Ammeter to measure supply current 8) Load the default register settings from the control Connections and Setup software by clicking on the Defaults button. This section provides a step-by-step quide to testing the 9) Connect the SMA connector labeled RFOUT on the basic functionality of the EV kit. Caution: Do not turn on evaluation board to a spectrum analyzer or to an DC power or RF signal generators until all connections oscilloscope. Set TXEN = 1. The supply current from are completed. the +5V supply should read approximately 475mA. 1) Verify that the shunt across jumper JU1 on the 10) Enable the RF signal generators output. Check the INTF3000+ interface board has been removed. output level on the spectrum analyzer or oscilloscope. 2) Connect 20-pin header J1 on the INTF3000+ interface Expected power level is about +12.3dBm under board to 20-pin header JP2 on the EV kit using the default setting supplied ribbon cable. Note: Pin 1 of the interface 11) Set the gain code using the control software. cable corresponds to the red wire. Pin 1 is designated Check the output level on the spectrum analyzer or in the silkscreen on each of the PCBs. oscilloscope. Windows is a registered trademark and registered service mark of Microsoft Corporation. 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