19-2355; Rev 0; 2/02 MAX2371/MAX2373 Evaluation Kits Features ♦ Easy Evaluation of the MAX2371/MAX2373 ♦ 2.65V to 3.3V Single-Supply Operation ♦ Jumpers for Analog/Digital Control ♦ All Critical Peripheral Components Included ♦ Fully Assembled and Tested Ordering Information TEMP RANGE IC PACKAGE MAX2371EVKIT PART -40°C to +85°C 12 QFN MAX2373EVKIT -40°C to +85°C 12 QFN MAX2371 Component List DESIGNATION QTY DESCRIPTION DESIGNATION QTY DESCRIPTION C1, C3, C7 3 Open R1 1 1.10kΩ ±1% resistor CC0402 1 750Ω ±1% resistor CC0402 1 15pF ±5% capacitor Taiyo Yuden 0402_UMK105CH150JW-B R2 C2 C4, C5 2 1500pF ±10% capacitors Murata 0402_GRP155R71H152K C6 1 6.8pF ± 0.5pF capacitor Murata 0402_GRP1555C1H6R8DZ01E C8 1 1.0µF ±20% capacitor Taiyo Yuden 0805_LMK212BJ105MG-B C9 1 10nF ±10% capacitor Murata 0402_GRP155R71C103K C10 1 0.015µF ±10% capacitor Taiyo Yuden 0402_EMK105B153KW-B C19 1 100nF ±10% capacitor Murata 0402_GRP155R61A104K R3 1 0Ω resistor CC0402 L1 1 Open L2 1 56nH inductor Coilcraft 1008CS-560XJBC L4 1 33nH ±5% inductor Murata 0603_LQG18HN33NJ00 L5 1 120nH ±5% inductor Coilcraft 1008CS-121XJBB U1 1 MAX2371EGC Maxim MAX2371EGC J1, J2, J3 3 1 ✕ 3-pin headers Digi-Key S1012-36-ND J4 1 1 ✕ 6-pin header Digi-Key S1012-36-ND J5, J6 2 1 ✕ 2-pin headers Digi-Key S1012-36-ND P1, P2 2 SMA connectors (edge mount) Johnson 142-0701-801 ________________________________________________________________ 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: MAX2371/MAX2373 General Description The MAX2371/MAX2373 evaluation kits (EV kits) simplify evaluation of the MAX2371/MAX2373 low-noise amplifiers (LNAs). They enable testing of the devices’ radio frequency (RF) performance and require no additional support circuitry. The EV kits’ signal inputs and outputs use SMA connectors to facilitate the connection of RF test equipment. Evaluate: MAX2371/MAX2373 MAX2371/MAX2373 Evaluation Kits MAX2373 Component List DESIGNATION QTY C11 C12 1 1 DESCRIPTION PHONE FAX 100nF ±10% capacitor Murata 0402_GRP155R61A104K 847-639-6400 847-639-1469 Digi-Key 800-344-4539 218-681-3380 0.015µF ±10% capacitor Taiyo Yuden 0402_EMK105B153KW-B Murata 770-436-1300 770-436-3030 Taiyo Yuden 800-348-2496 847-925-0899 100pF ±5% capacitors Murata 0402_GRP1555C1H101J C15 1 1.3pF ±0.1pF capacitor Murata 0402_GRP1555C1H1R3B C16 1 1.0µF ±20% capacitor Taiyo Yuden 0805_LMK212BJ105MG-B C17 SUPPLIER CoilCraft 2 C13, C14 Component Suppliers Note: Please indicate that you are using the MAX2371/MAX2373 when contacting these component suppliers. Quick Start The MAX2371/MAX2373 EV kits are fully assembled and factory tested. Follow the instructions in the Connections and Setup section for proper device evaluation. Test Equipment Required This section lists the recommended test equipment to verify operation of the MAX2371/MAX2373. It is intended as a guide only, and some substitutions are possible. • Two RF signal generators capable of delivering at least 5dBm of output power at the operating frequency (HPE4433B or equivalent) 1 Open C18 1 10nF ±10% capacitor Murata 0402_GRP155R71C103K R4 1 1.10kΩ ±1% resistor CC0402 R5 1 1.5kΩ ±1% resistor CC0402 R6 1 0Ω resistor CC0402 L6 1 15nH ±5% inductor Coilcraft 0402CS-15NXJBW L8 1 4.7nH ±0.2nH inductor Murata 0402_LQP15MN4N7C00 L9 1 1.8nH ±0.3nH inductor Murata 0402_LQG15HN1N8S00 • An RF spectrum analyzer that covers the MAX2371/MAX2373 operating frequency range, as well as a few harmonics (FSEB20, for example) L10 1 12nH ±5% inductor Murata 0402_LQG15HN12NJ00 • A network analyzer (HP8753D, for example) to measure small-signal return loss and gain (optional) U2 1 MAX2373EGC Maxim MAX2373EGC 3 1 ✕ 3-pin headers Digi-Key S1012-36-ND J10 1 1 ✕ 6-pin header Digi-Key S1012-36-ND • SMA cables J11, J12 2 1 ✕ 2-pin headers Digi-Key S1012-36-ND P3, P4 2 SMA connectors (edge mount) Johnson 142-0701-801 This section provides a step-by-step guide to operating the EV kits and testing the devices’ function. Do not turn on the DC power or RF signal generators until all connections are made: 1) Connect a DC supply set to 2.775V (through an ammeter if desired) to the VCC and GND on the EV kit. Do not turn on the supply. J7, J8, J9 • One RF power sensor capable of handling at least 20dBm of output power at the operating frequency (HP8482A or equivalent) • One RF power meter capable of measuring up to 20dBm of output power at the operating frequency (HP437B or equivalent) • Two power supplies capable of up to 1A at 2.65V to 3.3V • An optional ammeter for measuring the supply current Connections and Setup 2) Connect one RF signal generator to the LNA_IN 2 _______________________________________________________________________________________ MAX2371/MAX2373 Evaluation Kits Evaluate: MAX2371/MAX2373 SMA connector. Do not turn on the generator’s output. Set the generator for proper output frequency and power level. 3) Connect the spectrum analyzer to LNA_OUT. Set the spectrum analyzer to a center frequency of 150MHz (MAX2371) or 900MHz (MAX2373). 4) Connect the jumpers to set the desired mode of operation (RX Enable/Disable, High/Low Attenuation, High/Low Current). 5) Connect a DC supply set to 1.3875V (V CC/2 for maximum gain) to AGC. Do not turn on the supply. 6) Turn on the DC supplies. 7) Activate the RF generator’s output. Refer to the Electrical Characteristics Table in the data sheet for specifications in different operation modes. 8) Another method for determining gain is by using a network analyzer (optional). This has the advantage of displaying gain versus a swept-frequency band, in addition to displaying input return loss. Refer to the network analyzer manufacturer’s user manual for setup details. Layout Issues A good PC board is an essential part of an RF circuit design. The EV kit PC board can serve as a guide for laying out a board using the MAX2371/MAX2373. Keep traces carrying RF signals as short as possible to minimize radiation and insertion loss. Use impedance control on all RF signal traces. VCC nodes on the PC board should have decoupling capacitors to the closest ground. Refer to the Layout section of the MAX2371/ MAX2373 data sheet for more information. _______________________________________________________________________________________ 3 Evaluate: MAX2371/MAX2373 MAX2371/MAX2373 Evaluation Kits VCC C4 1500pF R1 1.1kΩ C2 15pF SMA_EDGE_62 P1 1 12 GND C19 100nF 1 C1 OPEN 2 L1 OPEN 10 RSET LNA_IN C3 OPEN L2 56nH 11 RF_VCC 9 AGC_BYP C10 0.015µF VCC U1 2 LNA_E 8 LNA_VCC MAX2371 C5 1500pF L4 33nH L5 120nH 5 2 1 VCC 3 VCC J2 VCC C9 10nF J3 R3 0Ω J5 VCC J4-6 J4-5 J4-4 J4-3 J4-2 C8 1µF J4-1 J6 6 2 4 Figure 1. MAX2371 EV Kit Schematic 4 C6 SMA_EDGE_62 6.8pF P2 1 2 LNA_I 1 2 1 AGC RF_ATTN 3 VCC J1 7 LNA_OUT RX_EN 3 3 C7 OPEN R2 750Ω _______________________________________________________________________________________ MAX2371/MAX2373 Evaluation Kits Evaluate: MAX2371/MAX2373 VCC2 C13 100pF R4 1.1kΩ C11 100nF SMA_EDGE_62 P3 1 L8 4.7nH 12 GND 1 11 RF_VCC 10 RSET LNA_IN AGC_BYP 9 C12 0.015µF 2 L6 15nH VCC2 U2 2 LNA_E LNA_VCC MAX2373 8 C14 100pF L9 1.8nH L10 12nH 5 2 1 VCC2 3 VCC2 J8 J9 VCC2 J10-6 J10-5 J10-4 J10-3 J10-2 C16 1µF J10-1 J12 VCC2 C18 10nF R6 0Ω J11 2 6 2 4 7 LNA_I 1 2 1 AGC RF_ATTN 3 VCC2 J7 LNA_OUT RX_EN C15 SMA_EDGE_62 1.3pF P4 1 3 3 C17 OPEN R5 1.5kΩ Figure 2. MAX2373 EV Kit Schematic _______________________________________________________________________________________ 5 Evaluate: MAX2371/MAX2373 MAX2371/MAX2373 Evaluation Kits 1.0" Figure 3. MAX2371/MAX2373 EV Kit Component Placement Guide—Component Side 1.0" Figure 5. MAX2371/MAX2373 EV Kit PC Board Layout—Layer 3 6 1.0" Figure 4. MAX2371/MAX2373 EV Kit PC Board Layout—Layer 2 1.0" Figure 6. MAX2371/MAX2373 EV Kit PC Board Layout— Primary Component Side _______________________________________________________________________________________ MAX2371/MAX2373 Evaluation Kits Figure 7. MAX2371/MAX2373 EV Kit PC Board Layout— Secondary 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 © 2002 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products. Evaluate: MAX2371/MAX2373 1.0"