19-2204; Rev 0; 1/02 MAX2244/MAX2246 Evaluation Kits The MAX2244/MAX2246 evaluation kits (EV kits) simplify evaluation of the MAX2244/MAX2245/MAX2246 power amplifiers (PAs). They enable testing of the devices’ 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. The MAX2244 EV kit is assembled with a MAX2244 and incorporates output matching components optimized for 2.4GHz to 2.5GHz and approximately 22dBm output power. To evaluate the MAX2245, order samples from Maxim by calling 1-800-998-8800. The MAX2246 EV kit is assembled with a MAX2246 and is matched onboard to provide approximately 20dBm in the 2.4GHz band. Component Suppliers SUPPLIER Digi-Key PHONE WEBSITE 218-681-6674 www.digikey.com Kamaya 219-489-1533 www.kamaya.com Murata Electronics 770-436-1300 www.murata.com Toko 408-432-8281 www.toko.com Features ♦ Easy Evaluation of the MAX2244/MAX2246 ♦ 3V to 3.6V Single-Supply Operation ♦ Radio-Frequency Output Matched for Operation from 2.4GHz to 2.5GHz ♦ Jumper for Easy Shutdown Control ♦ Includes All Critical Peripheral Components Ordering Information TEMP RANGE IC PACKAGE MAX2244EVKIT PART -40°C to +85°C 9 UCSP MAX2246EVKIT -40°C to +85°C 9 UCSP MAX2244 Component List DESIGNATION QTY DESCRIPTION 1 10µF tantalum capacitor, C case AVXTAJC106K016 C2 1 10nF ±10%, 10V min ceramic capacitor (0402) Murata GRP155R71E103K C3, C9, C11 3 1000pF ±10%, 25V min ceramic capacitors (0402) Murata GRP155R71H102K C4 1 27pF ±5% ceramic capacitor (0402) Murata GRP1555C1H270J 2 10pF ±5% ceramic capacitors (0402) Murata GRP1555C1H100B C7 1 1.2pF ±0.25pF ceramic capacitor (0402) Murata GRP1555C1H1R3B C8 1 5pF ±0.25pF ceramic capacitor (0402) Murata GRP1555C1H5R0B C1 C5, C6 DESIGNATION QTY DESCRIPTION C10 1 100pF ±5% ceramic capacitor (0402) Murata GRP155C1H101K J1, J2, J5 3 Connectors Digi-Key 500K-ND J3, J4 2 SMA connectors (edge mount) EFJohnson 142-0701-801 JU1 1 3-pin header, 0.1in center Digi-Key S1012-36-ND JU1 1 R1, R3 2 Shunt Digi-Key S9000-ND 8.2Ω ±5% resistors (0402) R2 1 1kΩ ±5% resistor (0402) U1 1 MAX2244EBL 9-bump ultra chipscale package (UCSPTM) None 1 MAX2244 EV kit PC board None 1 MAX2244 data sheet UCSP is a trademark of Maxim Integrated Products, Inc. ________________________________________________________________ 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: MAX2244/MAX2245/MAX2246 General Description Evaluate: MAX2244/MAX2245/MAX2246 MAX2244/MAX2246 Evaluation Kits MAX2246 Component List DESIGNATION C1 C2 C3, C9, C11 C4, C8, C10 C5, C6 QTY 1 • One RF power sensor capable of handling at least 10dBm of output power at the operating frequency (HP 8482A or equivalent) 1 10nF ±10% 10V min ceramic capacitor (0402) Murata GRP155R71E103K • One RF power meter capable of measuring up to 10dBm of output power at the operating frequency (HP 438A or equivalent) 3 1000pF ±10% 25V min ceramic capacitors (0402) Murata GRP155R71H102K • An RF spectrum analyzer that covers the MAX2244/ MAX2246 operating frequency range, as well as a few harmonics (HP 8562E, for example) 3 27pF ±5% ceramic capacitors (0402) Murata GRP1555C1H270J • A dual-output power supply capable of up to 0.25A at 3.0V to 3.6V and a supply capable of 0 to 2.5V at up to 10mA. • An optional ammeter for measuring the supply current 10pF ±0.1pF ceramic capacitors (0402) Murata GRP1555C1H100B • Two 50Ω SMA cables • One SMA 20dB pad A network analyzer (HP 8753D, for example) to measure small-signal return loss and gain (optional) 1.3pF ±0.1pF ceramic capacitor (0402) Murata GRP1555C1H1R3B • 1 J1, J2, J5 3 Connectors Digi-Key 500K-ND J3, J4 2 SMA connectors (edge mount) EFJohnson 142-0701-801 JU1 1 3-pin header, 0.1in center Digi-Key S1012-36-ND JU1 1 Shunt Digi-Key S9000-ND This section is 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 3.0V (through an ammeter, if desired) to the VCC and GND terminals on the EV kit. Set the second DC supply voltage to 2.0V and connect to PC. Do not turn on the supply. R1, R3 2 8.2Ω ±5% resistors (0402) C7 R2 1 1kΩ ±5% resistor (0402) U1 1 MAX2246EBL 9-pin UCSP None 1 MAX2246 EV kit PC board None 1 MAX2246 data sheet Quick Start The MAX2244/MAX2246 EV kits are fully assembled and factory tested. Follow the instructions in the Connections and Setup section for proper device evaluation. To evaluate the MAX2245, order samples from Maxim by calling 1-800-998-8800. Test Equipment Required This section lists the recommended test equipment to verify operation of the MAX2244/MAX2245/MAX2246. It is intended only as a guide, and some substitutions are possible: 2 One RF signal generator capable of delivering at least 5dBm of output power at the operating frequency (HP 8648D or equivalent) DESCRIPTION 10µF tantalum capacitor, C case AVXTAJC106K016 2 • Connections and Setup 2) Connect one RF signal generator to the RFIN SMA connector. Do not turn on the generator’s output. Set the generator for an output frequency of 2.45GHz at a power level of 2dBm. 3) Connect a 20dB pad to the RFOUT SMA connector on the EV kit to prevent overloading the power sensor and power meter. 4) Connect a power sensor to the 20dB pad. 5) Connect the power sensor to a power meter. Set the power meter offset to 20dB and frequency to 2.45GHz. 6) Ensure JU1 (SHUTDOWN) is in the ON position. First turn on the VCC supply, and then the PC supply. The VCC supply current should read approximately 60mA (MAX2244) or 35mA (MAX2246). 7) Activate the RF generator’s output. For the MAX2244 EV kit, the output power should increase to approximately 22dBm with supply current rising _______________________________________________________________________________________ MAX2244/MAX2246 Evaluation Kits Keep traces carrying RF signals as short as possible to minimize radiation and insertion loss because of the PC board. Each VCC node on the PC board should have its own decoupling capacitor to minimize supply coupling from one section of the IC to another. A star topology for the supply layout, in which each VCC node on the circuit has a separate connection to a central VCC node, can further minimize coupling between sections of the IC. Refer to the Layout section of the MAX2244/MAX2245/MAX2246 data sheet for more information. 8) Varying the DC supply voltage connected to PC between 0 and 2.5V varies the output power. Refer to the MAX2244/MAX2245/MAX2246 data sheet for more information. Layout Issues A good PC board is an essential part of an RF circuit design. The EV kit PC board can be a guide for laying out a board using the MAX2244/MAX2245/MAX2246. VCC J2 VCC C1 10µF C2 10nF J1 GND R1 8.2Ω J5 PC 50Ω J3 SMA RFIN C5 10pF R2 1kΩ VCC C3 1000pF C4 27pF U1 T4* 50Ω, 5.3° L = 0.8mm MAX2244 VPC VCC2 GND A1 A2 A3 RFIN/ SHDN GND REFOUT B1 B2 B3 GND VCC1 GND C1 C2 C3 JU1 SHDN C8 5pF T1* 50Ω, 17.6° L = 2.7mm T3* 50Ω, 5.3° L = 0.8mm C10 100pF T2* C6 50Ω, 50° 10pF L = 7.6mm 50Ω C11 1000pF J4 SMA RFOUT C7 1.2pF *W = 0.254mm (10mils) ON FR4, 0.135mm (5.3mils) THICKNESS TO GROUND PLANE. C9 1000pF R3 8.2Ω Figure 1. MAX2244 EV Kit Schematic _______________________________________________________________________________________ 3 Evaluate: MAX2244/MAX2245/MAX2246 to approximately 172mA. For the MAX2246 EV kit, output power is approximately 20dBm with a supply current of approximately 120mA. Evaluate: MAX2244/MAX2245/MAX2246 MAX2244/MAX2246 Evaluation Kits VCC J2 VCC C1 10µF C2 10nF J1 GND R1 8.2Ω J5 PC 50Ω J3 SMA RFIN C5 10pF R2 1kΩ VCC C3 1000pF C4 27pF T4* 50Ω, 8.9° L = 1.3mm U1 MAX2246 VPC VCC2 GND A1 A2 A3 RFIN/ SHDN GND REFOUT B1 B2 B3 GND VCC1 GND C1 C2 C3 JU1 SHDN C8 27pF T1* 50Ω, 25.0° L = 3.8mm T3* 50Ω, 5.3° L = 0.8mm C10 27pF T2* C6 50Ω, 50° 10pF L = 7.6mm 50Ω J4 SMA RFOUT C7 1.3pF *W = 0.254mm (10mils) ON FR4, 0.135mm (5.3mils) THICKNESS TO GROUND PLANE. C9 1000pF R3 8.2Ω Figure 2. MAX2246 EV Kit Schematic 4 C11 1000pF _______________________________________________________________________________________ MAX2244/MAX2246 Evaluation Kits Evaluate: MAX2244/MAX2245/MAX2246 Figure 3. MAX2244 EV Kit Component Placement Guide—Component Side 1.0" 1.0" Figure 4. MAX2244 EV Kit PC Board Layout—Component Side Figure 5. MAX2244 EV Kit PC Board Layout—Ground Plane _______________________________________________________________________________________ 5 Evaluate: MAX2244/MAX2245/MAX2246 MAX2244/MAX2246 Evaluation Kits 1.0" Figure 6. MAX2244 EV Kit PC Board Layout—Power Plane 1.0" Figure 7. MAX2244 EV Kit PC Board Layout—Solder Side Figure 8. MAX2246 EV Kit Component Placement Guide—Component Side 6 _______________________________________________________________________________________ MAX2244/MAX2246 Evaluation Kits Figure 9. MAX2246 EV Kit PC Board Layout—Component Side 1.0" Figure 10. MAX2246 EV Kit PC Board Layout—Ground Plane 1.0" Figure 11. MAX2246 EV Kit PC Board Layout—Power Plane Figure 12. MAX2246 EV Kit PC Board Layout—Solder 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: MAX2244/MAX2245/MAX2246 1.0" 1.0"