19-1583; Rev 1; 12/99 MAX2651/MAX2652/MAX2653 Evaluation Kits The MAX2651/MAX2652 EV kits are assembled with a MAX2651/MAX2652 and incorporate input and output matching components optimized for RF frequencies of 925MHz to 960MHz (GSM band) and 1805MHz to 1880MHz (DCS band). The MAX2653 EV kit is assembled with a MAX2653 and incorporates input and output matching components optimized for the DCS band. Ordering Information PART TEMP. RANGE IC PACKAGE MAX2651EVKIT -40°C to +85°C 10 µMAX MAX2652EVKIT -40°C to +85°C 10 µMAX MAX2653EVKIT -40°C to +85°C 8 µMAX Features ♦ Easy Evaluation of MAX2651/MAX2652/MAX2653 ♦ +2.7V to +3.3V Single-Supply Operation ♦ GSM RF Input/Output Matched to 50Ω at 925MHz to 960MHz (MAX2651/MAX2652) ♦ DCS RF Input/Output Matched to 50Ω at 1805MHz to 1880MHz ♦ All Peripheral Components Included Component Suppliers SUPPLIER PHONE FAX WEB Coilcraft 847-639-6400 847-639-1469 www. coilcraft.com EF Johnson 800-368-4923 507-835-8356 www. efjohnson.com Kamaya 219-489-1533 219-489-2261 www. kamaya.com Murata Electronics 800-241-6574 770-436-3030 www. murata.com Taiyo Yuden 408-573-4150 408-573-4159 www. T-Yuden.com MAX2651 EV Kit Component List DESIGNATION QTY DESCRIPTION DESIGNATION QTY DESCRIPTION C1 1 68pF ±5% ceramic capacitor (0603) Murata GRM39COG680J50 L1, L5 2 8.2nH ±5% air-core inductors (0603) Murata LQG11A8N2J00 C2 1 15pF ±5% ceramic capacitor (0603) Murata GRM39COG150J50 L2 1 3.9nH ±0.3nH inductor (0603) Murata LQG11A3N9S00 C3 1 1.5pF ±0.1pF ceramic capacitor (0603) Murata GRM39COG1R5B50 L4 1 2.2nH ±0.3nH inductor (0603) Murata LQG11A2N2S00 C4, C5, C11 3 220pF ±5% ceramic capacitors (0603) Murata GRM39COG221J50 R1, R4 2 910Ω ±5% resistors (0603) Kamaya RMC16911JT C6 1 1.2pF ±0.1pF ceramic capacitor (0603) Murata GRM39COG1R2B50 R2 1 330Ω ±5% resistor (0603) Kamaya RMC16331JT C7, C8 0 Not installed C9 1 2.2pF ±0.1pF ceramic capacitor (0603) Murata GRM39COG2R2B50 R3 1 180Ω ±5% resistor (0603) Kamaya RMC16181JT C10 1 100pF ±5% ceramic capacitor (0603) Murata GRM39COG101J50V R5 1 0Ω resistor (0402) Kamaya RMC16S000JT C12 1 0.01µF ±10% ceramic cap (0805) C13 DCSIN, DCSOUT, GSMIN, GSMOUT 1 4 47pF ±5% ceramic capacitor (0603) Murata GRM39COG470J50 U1 1 MAX2651EUB None 1 MAX2651 EV kit PC board None 1 MAX2651 data sheet None 1 MAX2651 EV kit data sheet SMA connectors (PC edge mount) EF Johnson 142-0701-801 ________________________________________________________________ Maxim Integrated Products 1 For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800. For small orders, phone 1-800-835-8769. Evaluate: MAX2651/MAX2652/MAX2653 General Description The MAX2651/MAX2652/MAX2653 evaluation kits (EV kits) simplify evaluation of the MAX2651/MAX2652/MAX2653 low-noise amplifiers (LNAs). The kits enable testing of the devices’ RF performance and require no additional support circuitry. The signal inputs and outputs use SMA connectors to facilitate the connection of RF test equipment. Evaluate: MAX2651/MAX2652/MAX2653 MAX2651/MAX2652/MAX2653 Evaluation Kits MAX2652 EV Kit Component List DESIGNATION QTY BAND, GAIN, GND, SHDN, VCC, DESCRIPTION 1 47pF ±5% ceramic capacitor (0603) Murata GRM39COG470J050 or Taiyo Yuden UMK107CH470JZ 4 SMA connectors (PC edge mount) EF Johnson 142-0701-801 or Digi-Key J502-ND 3 3-pin headers L1 1 6.8nH ±5% inductor (0603) Murata LQG11A6N8J00 C14 5 Test points Mouser 151-203 C1, C5, C6, C12 4 220pF ±5% ceramic capacitors (0603) Murata GRM39COG221J050 or Taiyo Yuden UMK107CH221JZ C2 1 68pF ±5% ceramic capacitor (0603) Murata GRM39COG680J050 or Taiyo Yuden UMK107CH680JZ C3 1 5.6pF ±0.25pF ceramic capacitor (0603) Murata GRM39COG5R6C050 L2 1 3.3nH ±0.3nH inductor (0603) Murata LQG11A3N3S00 C4 1 1.1pF ±0.1pF ceramic capacitor (0603) Murata GRM40X7R105K010 L4 1 2.2nH ±0.3nH inductor (0603) Murata LQG11A2N2S00 C7 1 1.2pF ±0.1pF ceramic capacitor (0603) Murata GRM39COG1R2B050 L5 1 8.2nH ±5% inductor (0603) Murata LQG11A8N2J00 C8, C13 0 Not installed R1, R2, R5 3 910Ω ±5% resistors (0603) R3 0 Not installed C9 1 1µF ±10% MAX ceramic capacitor (0805) Murata GRM39COG2R2B50 or Taiyo Yuden LMK212BJ105KG R4 1 240Ω ±5% resistor (0603) C10 1 2.2pF ±0.1pF ceramic capacitor (0603) Murata GRM39COG2R2B050 C11 1 100pF ±5% ceramic capacitor (0603) Murata GRM39COG101J050 or Taiyo Yuden UMK107CH101JZ DCSIN, DCSOUT, GSMIN, GSMOUT JU1, JU2, JU3 R6 1 0Ω ±5% resistor (0402) U1 1 MAX2652EUB (10 µMAX) None 3 Shunts (JU1, JU2, JU3) None 1 MAX2652 EV kit PC board None 1 MAX2652 data sheet None 1 MAX2652 EV kit data sheet MAX2653 EV Kit Component List DESIGNATION QTY DESIGNATION QTY DESCRIPTION C1, C7 2 100pF ±5% ceramic capacitors (0603) Murata GRM39COG101J50 DCSIN, DCSOUT C2 1 1.5pF ±0.1pF ceramic capacitor (0603) Murata GRM39COG1R5B50 L1 1 3.3nH ±0.3nH inductor (0603) Murata LQG11A3N3S00 C3 1 47pF ±5% ceramic capacitor (0603) Murata GRM39COG470J50 L3 1 2.7nH ±0.3nH inductor (0603) Murata LQG11A2N7S00 C4 1 1.0pF±0.1pF ceramic capacitor (0603) Murata GRM39COG010B50 R1, R3 2 1kΩ ±5% resistors (0603) Kamaya RMC16102JT C5, C8 0 Not installed R2 1 330Ω ±5% resistor (0603) Kamaya RMC16331JT C6 1 150pF ±5% ceramic capacitor (0805) Murata GRM40COG151J50 R4 1 0Ω resistor (0603) Kamaya RMC16000JT C9 1 2200pF ±5% ceramic capacitor (0603) Murata GRM39X7R222J50 U1 1 MAX2653EUA None 1 MAX2653 EV kit PC board 1 0.01µF ±5% ceramic capacitor (0603) Murata GRM39X7R103J50 None 1 MAX2653 data sheet None 1 MAX2653 EV kit data sheet C10 2 DESCRIPTION 1 SMA connector (PC edge mount) EF Johnson 142-0701-801 _______________________________________________________________________________________ MAX2651/MAX2652/MAX2653 Evaluation Kits This section lists the required test equipment to verify operation of the MAX2651/MAX2652/MAX2653. It is intended as a guide only; some substitutions are possible. • An RF signal generator capable of delivering at least 0dBm of output power up to 2.5GHz (HP 8648C or equivalent) • An RF spectrum analyzer that covers the operating frequency range plus a few harmonics (HP 8561E, for example) • A power supply capable of up to 25mA at +2.7V to +3.3V • An optional ammeter for measuring the supply current • Two 50Ω SMA cables • A noise-figure meter (HP 8970B, for example) to measure noise figure (optional) • A network analyzer (HP 8753D, for example) to measure return loss and gain (optional) Connections and Setup The MAX2651/MAX2652/MAX2653 EV kits are fully assembled and factory tested. This section provides a step-by-step guide to operating the EV kits and testing the devices’ functions. Do not turn on the DC power or RF signal generator until all connections are made. Checking Power Gain (DCS Band) For the MAX2651/MAX2652 EV kits, ensure that the GSMIN and GSMOUT ports are terminated into 50Ω. High-Gain Mode 1) Connect a +3VDC supply (through an ammeter if desired) to the EV kit’s VCC and GND terminals. Do not turn on the supply. 2) Connect an RF signal generator to the DCSIN SMA connector; do not turn on the generator’s output. Set the generator for an output frequency of 1850MHz at a power level of -30dBm. 3) Connect a spectrum analyzer to the EV kit’s DCSOUT SMA connector. Set the analyzer to a center frequency of 1850MHz, a total span of 200MHz, and a reference level of 0dBm. 4) Connect a jumper wire between the EV kit’s GAIN input and VCC (high-gain mode). 5) For the MAX2651/MAX2652 EV kits only, connect a jumper wire between the EV kit’s BAND input and VCC (DCS mode). 6) Turn on the DC supply. If using an ammeter, the supply current should read approximately 5.7mA for the MAX2651, 7.0mA for the MAX2652, and 5.4mA for the MAX2653. 7) Activate the RF generator’s output. A signal on the spectrum analyzer’s display should indicate a typical gain of 18dB for the MAX2651/MAX2653 and 17dB for the MAX2652 after accounting for cable, board, and connector losses. (Board and connector loss correction is typically 0.3dB for the DCS gain test.) Low-Gain Mode 8) Deactivate the signal generator’s output. Remove the jumper wire between the GAIN input and VCC, and reconnect the jumper wire between the GAIN input and ground (low-gain mode). If using a current meter, the supply current should now read approximately 2.2mA 9) Activate the RF generator’s output. A signal on the spectrum analyzer’s display should indicate a typical gain of -2dB after accounting for cable and board losses. 10) Another method for determining gain is to use a network analyzer. This has the advantage of displaying gain over a swept frequency band, in addition to displaying input and output return loss. Refer to the network analyzer manufacturer’s user manual for setup details (optional). Checking Power Gain (GSM Band, MAX2651/MAX2652 EV Kits Only) Ensure that the DCSIN and DCSOUT ports are terminated into 50Ω. High-Gain Mode 1) Connect a +3VDC supply (through a current meter if desired) to the EV kit’s VCC and GND terminals. Do not turn on the supply. 2) Connect an RF signal generator to the GSMIN SMA connector; do not turn on the generator’s output. Set the generator for an output frequency of 945MHz at a power level of -30dBm. 3) Connect a spectrum analyzer to the EV kit’s GSMOUT SMA connector. Set the analyzer to a center frequency of 945MHz, a total span of 200MHz, and a reference level of 0dBm. _______________________________________________________________________________________ 3 Evaluate: MAX2651/MAX2652/MAX2653 Test Equipment Required Evaluate: MAX2651/MAX2652/MAX2653 MAX2651/MAX2652/MAX2653 Evaluation Kits 4) Connect a jumper wire between the EV kit’s GAIN input and VCC (high-gain mode). 5) Connect a jumper wire between the EV kit’s BAND input and ground (GSM mode). 6) Turn on the DC supply. If using an ammeter, the supply current should read approximately 5.9mA for the MAX2651 and 7.2mA for the MAX2652. 7) Activate the RF generator’s output. A signal on the spectrum analyzer’s display should indicate a typical gain of 18dB after accounting for cable and board losses. (Board and connector loss correction is typically 0.3dB for the GSM gain test.) Low-Gain Mode 8) Deactivate the signal generator’s output. Remove the jumper wire between the GAIN input and VCC, and reconnect the jumper wire between the GAIN input and ground (low-gain mode). If using a current meter, the supply current should now read approximately 2.2mA for the MAX2651 and 2.4mA for the MAX2652. 9) Activate the RF generator’s output. A signal on the spectrum analyzer’s display should indicate a typical gain of -2dB after accounting for cable and board losses. Checking Noise Figure Noise-figure measurements on low-noise devices are extremely sensitive to board and lab setup losses/parasitics. The specified MAX2651/MAX2652/MAX2653 noisefigure values (refer to the MAX2651/MAX2652/MAX2653 data sheet) have board and connector losses subtracted out. (Board and connector loss correction is typically 0.1dB for the DCS band noise figure test and is negligible for GSM.) There are many techniques/precautions for measuring a noise figure. A detailed explanation of these items goes beyond the scope of this document. For more information on how to perform this level of noise-figure measurement, refer to the noise-figure meter’s operating manual as well as Hewlett Packard Application Note #57-1. Layout Considerations 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 MAX2651/MAX2652/MAX2653. Each VCC node on the PC board should have its own decoupling capacitor. This minimizes 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. 10) Another method for determining gain is to use a network analyzer. This has the advantage of displaying gain over a swept frequency band, in addition to displaying input and output return loss. Refer to the network analyzer manufacturer’s user manual for setup details (optional). 4 _______________________________________________________________________________________ MAX2651/MAX2652/MAX2653 Evaluation Kits SMA GSMIN C2 15pF GND GAIN 2 GSMIN GSMOUT L1 8.2nH R4 910Ω 10 SMA GSMOUT 9 R3 180Ω C10 100pF L2 3.9nH 4 C3 1.5pF 5 BAND R1 910Ω C4 220pF GND DCSIN BAND VCC DCSOUT GND VCC L5 8.2nH MAX2651 C13 47pF C9 2.2pF U1 3 SMA DCSIN GAIN C11 220pF C1 68pF Evaluate: MAX2651/MAX2652/MAX2653 1 8 C8 OPEN R5 0Ω VCC C7 OPEN C12 0.01µF SMA DCSOUT 7 R2 330Ω C6 1.2pF 6 L4 2.2nH VCC C5 220pF Figure 1. MAX2651 EV Kit Schematic 1.0" 1.0" Figure 2. MAX2651 EV Kit Component Placement Guide Figure 3. MAX2651 EV Kit PC Board Layout—Component Side _______________________________________________________________________________________ 5 Evaluate: MAX2651/MAX2652/MAX2653 MAX2651/MAX2652/MAX2653 Evaluation Kits 1.0" 1.0" Figure 4. MAX2651 EV Kit PC Board Layout—Ground Plane 1 Figure 5. MAX2651 EV Kit PC Board Layout—Ground Plane 2 1.0" Figure 6. MAX2651 EV Kit PC Board Layout—Solder Side 6 _______________________________________________________________________________________ MAX2651/MAX2652/MAX2653 Evaluation Kits ON VCC R1 910Ω JU1 1 C1 220pF OFF GAIN SHDN R5 910Ω 10 LOW C10 2.2pF 2 L1 6.8nH C14 47pF DCS GSM VCC MAX2652 L2 3.3nH 4 JU2 5 R2 910Ω C5 220pF GND DCSIN BAND SMA GSMOUT R4 240Ω U2 C4 1.1pF VCC GSMOUT 9 GSMIN C2 68pF 3 SMA DCSIN HIGH JU3 C12 220pF C3 5.6pF SMA GSMIN Evaluate: MAX2651/MAX2652/MAX2653 VCC C11 100pF L5 8.2nH VCC DCSOUT GND 8 C13 OPEN (0402) R6 0Ω (0402) C8 OPEN (0402) C7 1.2pF 6 L4 2.2nH VCC SMA DCSOUT 7 R3 OPEN C9 1µF VCC C6 220pF Figure 7. MAX2652 EV Kit Schematic 1.0" 1.0" Figure 8. MAX2652 EV Kit Component Placement Guide Figure 9. MAX2652 EV Kit PC Board Layout—Component Side _______________________________________________________________________________________ 7 Evaluate: MAX2651/MAX2652/MAX2653 MAX2651/MAX2652/MAX2653 Evaluation Kits 1.0" 1.0" Figure 10. MAX2652 EV Kit PC Board Layout—Ground Plane 1 Figure 11. MAX2652 EV Kit PC Board Layout—Ground Plane 2 1.0" Figure 12. MAX2652 EV Kit PC Board Layout—Solder Side 8 _______________________________________________________________________________________ MAX2651/MAX2652/MAX2653 Evaluation Kits 1 SHDN C1 100pF C9 2200pF L1 3.3nH GAIN 3 C2 1.5pF 4 GND MAX2653 DCSIN GND VCC DCSOUT GND R3 1k 8 GAIN C7 100pF U2 2 SMA DCSIN SHDN Evaluate: MAX2651/MAX2652/MAX2653 R1 1k 7 C8 OPEN R4 0Ω C5 OPEN C6 150pF C4 1pF 5 L3 2.7nH VCC SMA DCSOUT 6 R2 330Ω C10 0.01µF VCC C3 47pF Figure 13. MAX2653 EV Kit Schematic 1.0" 1.0" Figure 14. MAX2653 EV Kit Component Placement Guide Figure 15 MAX2653 EV Kit PC Board Layout—Component Side _______________________________________________________________________________________ 9 Evaluate: MAX2651/MAX2652/MAX2653 MAX2651/MAX2652/MAX2653 Evaluation Kits 1.0" 1.0" Figure 16. MAX2653 EV Kit PC Board Layout—Ground Plane 1 Figure 17. MAX2653EV Kit PC Board Layout—Ground Plane 2 1.0" Figure 18. MAX2653 EV Kit PC Board Layout—Solder Side 10 ______________________________________________________________________________________ MAX2651/MAX2652/MAX2653 Evaluation Kits Evaluate: MAX2651/MAX2652/MAX2653 NOTES ______________________________________________________________________________________ 11 Evaluate: MAX2651/MAX2652/MAX2653 MAX2651/MAX2652/MAX2653 Evaluation Kits NOTES 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. 12 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 1999 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.