19-1807; Rev 1; 4/03 MAX2338 Evaluation Kit Component Suppliers SUPPLIER PHONE FAX WEB AVX 803-946-0690 803-626-3123 avx-corp.com EFJohnson 402-474-4800 402-474-4858 efjohnson.com Kamaya 219-489-1533 219-489-2261 kamaya.com Murata 949-852-2001 949-852-2002 murata.com Toko 708-297-0070 708-699-1194 toko.com Features ♦ Easy Evaluation of the MAX2338 ♦ +2.7V to +3.3V Single Supply Operation ♦ All Critical Matching Components Included ♦ Cellular-Band RF Ports Matched to 880MHz ♦ PCS-Band RF Ports Matched to 1960MHz ♦ SMA Connectors for all RF and IF Signal Ports ♦ Easy Configuration of Operating Modes Ordering Information PART MAX2338EVKIT TEMP RANGE IC PACKAGE -40°C to +85°C 28 QFN Note: When contacting these suppliers, please specify that you are using the MAX2338. DESIGNATION QTY C1, C4, C9 3 C2, C3, C24, C27 C5, C14, C16 DESIGNATION QTY 0.1µF ±10% ceramic capacitors (0402) Murata GRM39X7R103K016A C22 1 22pF ±5% ceramic capacitor (0402) Murata GRM36COG220J050A 6 100pF ±5% ceramic capacitors (0402) Murata GRM36COG101J050A C23, C25 2 4.0pF ±0.1pF ceramic capacitors (0402) Murata GRM36COG040B050A 3 6800pF ±10% ceramic capacitors (0402) Murata GRM36X7R682025A C29 1 22µF, 10V min tantalum capacitor AVX TAJC226K010 C30 1 15pF ±5% ceramic capacitor (0603) Murata GRM39COG150J050A C31 1 4.7pF ±0.1pF ceramic capacitors (0402) Murata GRM36COG4R7B050 R1, R4, R5, R6, R8 5 1kΩ ±5% resistors (0402) R2, R3 2 24.3Ω ±1% resistors (0402) 3.3kΩ ±1% resistor (0402) DESCRIPTION C6, C13, C15, C17, C21 3 Not Installed C7 1 2.7pF ±0.1pF ceramic capacitor (0402) Murata GRM36COG2R7B050A C8 1 0.75pF ±0.1pF ceramic capacitor (0402) Murata GRM36COGR75B050A C10 Component List 1 7pF ±0.1pF ceramic capacitor (0402) Murata GRM36COG070B050A C11, C18, C19, C20, C26, C28, C33 7 1000pF ±10% ceramic capacitors (0402) Murata GRM36X7R102050A C12 1 0Ω resistor (0402) DESCRIPTION R7 1 R9, R10 2 0Ω resistors (0402) R11 1 8.25kΩ ±5% resistor (0402) R12, R13 2 Not installed R14 1 20Ω ±1% resistor (0402) L1 1 8.2nH inductor Toko LL1608-FS8N2J Note: Components in bold text are on the backside of the PC board. ________________________________________________________________ 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 Evaluates: MAX2338 General Description The MAX2338 evaluation kit (EV kit) simplifies evaluation of the MAX2338 dual-band, triple-mode LNA and mixers. This kit allows evaluation of the device’s low noise amplifiers (LNA), downconverters and buffers. Figure 1 shows the MAX2338 EV kit schematic. The EV kit provides 50Ω SMA connectors for all RF and IF input and output signals. Evaluates: MAX2338 MAX2338 Evaluation Kit Component List (continued) DESIGNATION QTY L2, L12 2 L3 1 0Ω resistor (0603) 1 2.2nH inductor Toko LL1608-FS2N2S L5 1 3.9nH inductor Toko LL1608-FS2N9J L6 1 15nH inductor Toko LL1608-FS15J L7, L8, L11 3 120nH inductors Toko LL1608-FS15J L10 1 Not installed T1 1 Balun transformer Toko B5F 458Db-1011 1 MAX2338EGI 44-pin QFN NOTE: U1 HAS AN EXPOSED PADDLE WHICH IS SOLDERED TO THE CIRCUIT BOARD GROUND PLANE. L4 U1 DESIGNATION DESCRIPTION 2.7nH inductors Toko LL1608-FS2N7S QTY DESCRIPTION JU2 1 20Ω ±1% resistor (0603) JU6, JU8, JU10 3 1 ✕ 2 headers (0.1 inch centers) JU1, JU3, JU4, JU5, JU7 5 1 ✕ 3 headers (0.1 inch centers) JU1, JU3, JU4, JU5, JU6, JU7, JU8, JU10 8 Shunts PMIXIN, CMIXIN, CLOOUT 3 SMA connectors ( PC mount ) Johnson 142-0701-201 CLNAOUT, IFOUT, PLNAOUT, PLNAIN, CLNAIN, LOIN, PLOOUT, FMOUT 8 SMA connectors ( edge mount ) Johnson 142-0701-801 VCC, GND 2 Test points None 1 MAX2338 data sheet None 1 MAX2338 EV kit data sheet 1 MAX2338 Rev A EV kit circuit board None ________________________________________________________ Recommended Test Equipment Power Supply Capable of providing at least 100mA at +2.7V to +3.3V. RF Signal Generators (2) HP 8648C or equivalent, capable of delivering -50dBm to -10dBm of output power from 800MHz to 2500MHz. Network Analyzer HP8753 or equivalent, covering the MAX2338 operating frequency range. Spectrum Analyzer HP8561E or equivalent, covering MAX2338 operating frequency range. Cables (50Ω) Three 50Ω cables with SMA connectors. Ammeter (optional) For measuring supply current. Noise Figure Meter (optional) HP8970B or equivalent, for measuring the noise figure of the LNA and downconverters. Quick Start The MAX2338 EV kit is fully assembled and factory tested. Follow the instructions in the Connections and Setup section for proper device evaluation. 2 Connections and Setup This section provides a step-by-step guide to setting up the MAX2338 EV kit and testing the LNA and downconverters. Do not turn on the DC power or RF signal generators until all connections are made. _______________________________________________________________________________________ MAX2338 Evaluation Kit 2) Set the BAND jumper (JU1) on the EV kit to VCC (HIGH) to test cellular band [JU1 to GND for PCS]. 3) Set the LIN jumper (JU3) on the EV kit to V CC (HIGH) to test the amplifiers in high linearity mode. 4) Connect a DC supply preset to +3V (through an ammeter, if desired) to the EV kit’s VCC and GND terminals. Do not turn on the supply. 5) Perform a full two-port calibration on a network analyzer at a power level of -30dBm over frequency range of 800MHz to 900MHz for cellular band [1900MHz to 2000MHz for PCS band]. 6) Connect port 1 and port 2 of the network analyzer to CLNAIN [PLNAIN for PCS] and CLNAOUT [PLNAOUT for PCS] respectively to measure the cellular [PCS] band gain. 7) Turn on the DC supply. If an ammeter is connected, the supply current should read approximately 28mA for cellular band [25mA for PCS]. 8) The network analyzer display should indicate a typical gain of 15.7dB for cellular band and 15.3dB for PCS band after accounting for board losses. The input and output board losses are 0.12dB for the cellular band. The input and output board losses for PCS band are 0.17dB and 0.3dB, respectively. These losses are to be added to the measurements to obtain the performance of the LNAs. Downconverter 1) Turn off the DC supply. 2) Remove the network analyzer from the LNA input and output connections. The DC supply connections needed for testing the downconverter mixer are the same as in the LNA section. 3) Set the LO/2 jumper (JU5) to VCC (ON) to enable the LO divider circuit for cellular band. When testing PCS band, this jumper setting has no effect. 5) Set the LIN jumper (JU3) on the EV kit to V CC (HIGH) to test cellular and PCS downconverters in high-linearity mode. 6) Connect an RF signal generator (with output disabled) to the LOIN connector. Set the frequency to 2126MHz for cellular band [2143MHz for PCS] and the output power to -3dBm. 7) Connect another RF signal generator (with output disabled) to the CMIXIN SMA connector. Set the frequency to 880MHz for cellular band [1960MHz for PCS band] and the output power to -25dBm. 8) Connect the spectrum analyzer to the IFOUT SMA connector. Set the spectrum analyzer center frequency to 183MHz. 9) Turn on the DC supply. Enable the LO signal generator and RF input signal generator outputs. 10) Measure the peak of the 183MHz IF signal on the spectrum analyzer. Compensate the IF signal conversion gain for the balun and board losses. Balun loss is 0.3dB and the input and output board losses are 0.1dB each. 11) The conversion gain for cellular and PCS band are typically +13.3dB and +14.5dB respectively, after corrections from step 10 are applied. Checking Noise Figure Noise figure measurements are sensitive to board and lab setup losses and parasitics. There are many techniques and precautions for measuring a low-noise figure. 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 operating manual, as well as to Hewlett Packard application note #57-2, Noise Figure Measurement Accuracy. PC Board Layout Considerations The MAX2338 EV kit can serve as a board layout guide. Keep PC board trace lengths as short as possible to minimize parasitics. Keep decoupling capacitors close to the device, with a low inductance connection to the ground plane. 4) Set the BAND jumper (JU1) on the EV kit to VCC (HIGH) to test cellular band [JU1 to GND for PCS]. _______________________________________________________________________________________ 3 Evaluates: MAX2338 Low-Noise Amplifier, High-Gain High-Linearity Mode 1) Set the GAIN jumper (JU4) on the EV kit to VCC (HIGH). This enables the LNA to operate in high gain mode. 4 VCC JU4 JU5 VCC JU3 C13 OPEN R2 24.3kΩ R5 1kΩ R1 1kΩ C17 OPEN R6 1kΩ 27 JU2 26 VCC JU10 GND PLNAIN C20 1000pF 5 BAND 25 SMA LOIN U1 23 22 L3 0Ω VCC 16 BUFFEN 17 GND 18 IF- 19 IF+ 20 GND PMIXIN CMIXIN 21 RBIAS 24 C4 0.01µF SMA PLOOUT R9 0Ω R10 0Ω SMA CLOOUT C6 OPEN C27 100pF C26 1000pF C10 7pF VCC C33 1000pF R11 8.25kΩ C28 1000pF R8 1kΩ C29 22µF 6 4 L10 OPEN GND SMA FMOUT T1 BALUNTOKO85F 45808-1011 3 2 1 C30 C12 15pF 0Ω C25 4.0pF VCC C31 4.7pF JU7 VCC L8 120nH C23 4.0pF SMA PMIXIN C24 100pF L12 2.7nH L7 120nH C9 0.01µF C5 6800pF VCC JU6 R7 3.32kΩ R3 24.3kΩ C21 OPEN L6 15nF FM 15 GND PLOOUT CLOOUT N/C L11 120nH 11 12 13 14 VCC JU8 R12 R13 OPEN OPEN MAX2338 LO/2 LOIN 9 10 C22 22pF C3 100pF SMA C8 0.75pF PLNAOUT L2 2.7nH CLNAOUT GND PLNAOUT GND RLNA 28 L1 8.2nH 4 CLNAIN 3 2 1 C7 2.7pF C2 100pF C11 1000pF 6 LIN C18 1000pF 7 GAIN C19 GND 1000pF 8 L5 3.9nH L4 C15 OPEN 2.2nH R4 1kΩ JU1 C16 6800pF SMA CLNAIN VCC VCC C14 6800pF SMA PLNAIN SMA CLNAOUT C1 0.01µF R14 20Ω VCC SMA IFOUT SMA CMIXIN Evaluates: MAX2338 MAX2338 Evaluation Kit Figure 1. MAX2338 EV Kit Schematic _______________________________________________________________________________________ MAX2338 Evaluation Kit Evaluates: MAX2338 1.0" 1.0" Figure 2. MAX2338 EV Kit PC Board Layout—Front Side 1.0" Figure 3. MAX2338 EV Kit PC Board Layout—Ground Layer 2 1.0" Figure 4. MAX2338 EV Kit PC Board Layout—Ground Layer 3 Figure 5. MAX2338 EV Kit PC Board Layout—Back Side _______________________________________________________________________________________ 5 Evaluates: MAX2338 MAX2338 Evaluation Kit 1.0" Figure 6. MAX2338 EV Kit Component Placement Guide—Front Side 1.0" Figure 7. MAX2338 EV Kit Component Placement Guide—Back 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. 6 _____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2003 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.