19-1882; Rev 0; 12/00 MAX2700/MAX2701 Evaluation Kits Features ♦ Easy Evaluation of MAX2700/MAX2701 ♦ +2.7V to +3.3V Single-Supply Operation ♦ RF Ports Matched to 1960MHz (MAX2700) ♦ RF Ports Matched to 2400MHz (MAX2701) ♦ SMA Connectors for All RF Signal Ports ♦ BNC Connectors for All Baseband Signal Ports ♦ Low-Power Shutdown Mode Ordering Information TEMP.RANGE IC PACKAGE MAX2700EVKIT PART -40°C to +85°C 48 TQFP-EP MAX2701EVKIT -40°C to +85°C 48 TQFP-EP MAX2700 Component List DESIGNATION QTY C1, C17, C18, C19, C21, C22, C23, C30, C31, C32, C36, C37, C38 13 C2, C10, C11, C25, C43, C46 6 DESCRIPTION 0.1µF 10% ceramic capacitors (0603) Murata GRM39X7R104K016A 68pF 5% ceramic capacitors (0402) Murata GRM36COG680J050A DESIGNATION QTY DESCRIPTION C13, C41, C42, C47, C48 5 Not installed C15, C20, C35, C39 4 0.056µF 10% ceramic capacitors (0603) Murata GRM39X7R563K016A C24, C29 2 0.56µF 10% ceramic capacitors (0805) Murata GRM40X7R564K016A C28 1 Not installed 4 1000pF 10% ceramic capacitors (0402) Murata GRM36X7R102K050A C44 1 C4, C50 2 2.0pF ±0.1pF ceramic capacitors Murata GRM36COG020B050A 10µF tantalum capacitor ±10% 16V min AVX TAJC106K016 C5 1 0Ω resistor (0603) C49 1 C8, C14, C33 3 100pF 5% ceramic capacitors (0402) Murata GRM36COG101J050A 5pF ±0.1pF ceramic capacitor (0402) Murata GRM36COG050B050A R1, R12, R15, R26, R32, R40, R45 7 0Ω resistors (0805) R2, R5, R6, R11 4 100Ω ±5% resistors (0402) R3, R4, R7, R8, R9, R10 6 0Ω resistors (0402) R13, R14, R19, R20, R33, R34, R38, R39, 8 1kΩ ±5% resistors (0402) C3, C6, C7, C45 C9, C16, C34 C12, C26, C27, C40 3 0.01µF 10% ceramic capacitors (0402) Murata GRM36X7R103K016A 4 22pF 5% ceramic capacitors (0402) Murata GRM36COG220J050A ________________________________________________________________ Maxim Integrated Products 1 For price, delivery, and to place orders, please contact Maxim Distribution at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. Evaluate: MAX2700/MAX2701 General Description The MAX2700/MAX2701 evaluation kits (EV kits) simplify evaluation of the MAX2700/MAX2701 direct downconverter receivers. These kits allow evaluation of the devices’ low-noise amplifier (LNA), I/Q demodulator, and variable gain amplifiers (VGAs). Figure 1 shows the MAX2700/MAX2701 EV kits schematic. The EV kits provide 50Ω SMA connectors for all RF input and output signals, and BNC connectors for all baseband input and output signals. MAX2700/MAX2701 Evaluation Kits Evaluate: MAX2700/MAX2701 MAX2700 Component List (continued) DESIGNATION QTY L5, L6 2 3.9nH inductors Toko LL1608-FH3N9J L7 1 0Ω resistor (0603) U1 1 MAX2700ECM 48-pin TQFP-EP NOTE: U1 has an exposed paddle which needs to be solder-attached to the circuit board to ensure proper functionality of the part. Balun transformer Murata LDB15C500A1900 J3, J6, J12, J18 4 SMA PC-mount connectors Johnson 142-0701-201 or Digi-Key J500-ND 1 4.7nH inductor Toko LL1608-FH4N7J J7–J11, J13–J17 10 BNC connectors A/D Electronics 580-002-00 6pF ±0.1pF ceramic capacitor (0402) Murata GRM36COG060B050A VCC, GND 2 Test points, Digi-Key 5000K-ND 1 J1, TP1 2 1×2 headers (0.1in centers) Digi-Key S1012-36-ND J2, J4, J5 3 1×3 headers (0.1in centers) Digi-Key S1012-36-ND J2, J4, J5 3 Shunts, Digi-Key S9000-ND — 1 MAX2700/2701 evaluation kit circuit board, rev. E DESIGNATION QTY R16, R22, R30, R36 4 1.1kΩ ±5% resistors (0402) R17, R21, R31, R37 4 3.6kΩ ±5% resistors (0402) R18, R23, R29, R35 4 R24, R25, R27, R28, R41, R42, R43, R44 8 51Ω ±5% resistors (0402) T1 1 Z1 Z4 L2 L3 L4 DESCRIPTION 820Ω ±5% resistors (0402) 1 Not installed 1 1.5nH inductor Toko LL1608-FH1N5S 1 5.6nH inductor Toko LL1005-FH5N6S DESCRIPTION MAX2701 Component List DESIGNATION C1, C17, C18,C19, C21, C22, C23, C30, C31, C32, C36, C37, C38 C2, C10, C11, C25, C43, C46 C3, C6, C7, C45 C4, C50 C5 2 DESIGNATION QTY 13 0.1µF 10% ceramic capacitors (0603) Murata GRM39X7R104K016A C8, C14, C33 3 100pF 5% ceramic capacitors (0402) Murata GRM36COG101J050A C9, C16, C34 3 6 68pF 5% ceramic capacitors (0402) Murata GRM36COG680J050A 0.01µF 10% ceramic capacitors (0402) Murata GRM36X7R103K016A C12, C26, C27, C40 4 4 1000pF 10% ceramic capacitors (0402) Murata GRM36X7R102K050A 22pF 5% ceramic capacitors (0402) Murata GRM36COG220J050A C13 1 2 1.5pF ±0.1pF ceramic capacitors Murata GRM36COG1R5B050A 2pF ±0.1pF ceramic capacitor (0402) Murata GRM36COG020B050A C15, C20, C35, C39 4 1 10pF ±0.1pF ceramic capacitor (0603) Murata GRM39COG100B050A 0.056µF 10% ceramic capacitors (0603) Murata GRM39X7R563K016A QTY DESCRIPTION DESCRIPTION _______________________________________________________________________________________ MAX2700/MAX2701 Evaluation Kits DESIGNATION QTY DESCRIPTION DESIGNATION QTY C24, C29 2 0.56µF 10% ceramic capacitors (0805) Murata GRM40X7R564K016A L4 1 5.6nH inductor Toko LL1005-FH5N6S L7 1 0Ω resistor (0603) U1 1 MAX2701ECM 48-pin TQFP-EP NOTE: U1 has an exposed paddle which needs to be solder-attached to the circuit board to ensure proper functionality of the part. J3, J6, J12, J18 4 SMA PC-mount connectors Johnson 142-0701-201 or Digi-Key J500-ND J7–J11, J13–J17 10 BNC connectors A/D Electronics 580-002-00 VCC, GND 2 Test points, Digi-Key 5000K-ND J1, TP1 2 1×2 headers (0.1in centers) Digi-Key S1012-36-ND J2, J4, J5 3 1×3 headers (0.1in centers) Digi-Key S1012-36-ND J2, J4, J5 3 Shunts, Digi-Key S9000-ND — 1 MAX2700/MAX2701 evaluation kit circuit board, rev. E C28, C41, C42, C47, C48 5 Not installed C44 1 10µF tantalum capacitor ±10% 16V min AVX TAJC106K016 C49 1 3pF ±0.1pF ceramic capacitor (0402) Murata GRM36COG030B050A R1, R12, R15, R26, R32, R40, R45 7 0Ω resistors (0805) R2, R5, R6, R11 4 100Ω ±5% resistors (0402) R3, R4, R7, R8, R9, R10 6 0Ω resistors (0402) R13, R14, R19, R20, R33, R34, R38, R39 8 1kΩ 5% resistors (0402) R16, R22, R30, R36 4 1.1kΩ ±5% resistors (0402) R17, R21, R31, R37 4 3.6kΩ ±5% resistors (0402) R18, R23, R29, R35 4 820Ω ±5% resistors (0402) R24, R25, R27, R28, R41, R42, R43, R44 8 51Ω ±5% resistors (0402) 1 Balun transformer Murata LDB15C500A2400 1 0.5pF ±0.1pF ceramic capacitor (0603) Murata GRM39COG0R5B050A Z4 1 1nH inductor Toko LL1005-FH1N0S L2 1 Not installed L3, L5, L6 3 2.7nH inductors Toko LL1608-FH2N7S T1 Z1 DESCRIPTION Component Suppliers SUPPLIER PHONE FAX AVX 803-946-0690 803-626-3123 EFJohnson 402-474-4800 402-474-4858 Kamaya 219-489-1533 219-489-2261 Murata 949-852-2001 949-852-2002 Toko 708-297-0070 708-699-1194 Note: Please indicate that you are using the MAX2700 or MAX2701 when contacting these component suppliers. _______________________________________________________________________________________ 3 Evaluate: MAX2700/MAX2701 MAX2701 Component List (continued) Evaluate: MAX2700/MAX2701 MAX2700/MAX2701 Evaluation Kits Table 1. Recommended Test Equipment 3) Set the X2EN jumper on the EV kit to GND (LOW). This enables the VCO doubler. EQUIPMENT DESCRIPTION RF Signal Generators (2) HP 8648C or equivalent, capable of delivering -50dBm to -10dBm of output power from 900MHz to 2500MHz Dual-Channel Oscilloscope For viewing the demodulator outputs 6) Connect port 1 and port 2 of network analyzer to LNAIN and LNAOUT, respectively. Power Supply Capable of providing at least 200mA at +2.7V to +3.3V Additional Variable Voltage Source For external control of VGA function 7) Turn on the DC supply. The supply current should read approximately 165mA for MAX2700 (167mA for MAX2701) if using an ammeter. Spectrum Analyzer HP 8561E or equivalent, covering MAX2700/MAX2701 operating frequency range Cables (50Ω) (2) 50Ω cables with SMA connectors Cables with BNC Connectors (2) BNC cables to check baseband signals Ammeter (optional) For measuring supply current Noise Figure Meter (optional) HP 8970B or equivalent, for measuring the noise figure of the LNA and I/Q demodulator Network Analyzer HP 8753D or equivalent, for measuring return loss and gain simultaneously 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 -30dBm power level. 8) The network analyzer display should indicate a typical gain of 16.5dB for MAX2700 at 1960MHz (15.5dB for MAX2701at 2400Mhz) after accounting for board losses. 9) The input and output board losses for MAX2700 are 0.25dB and 0.3dB, respectively. The input and output board losses for MAX2701 are 0.3dB and 0.35dB, respectively. 10) Set the GAIN_SET jumper on the EV kit to GND (LOW). This enables the LNA’s low-gain-mode operation. Measurements on the network analyzer should indicate a typical gain of -1.75dB for MAX2700 (-2.5dB for MAX2701) after accounting for board losses. 11) Connect the SHDN jumper to GND (LOW) to activate the shutdown mode. The supply current should drop to less than 100µA. I/Q Demodulator Quick Start 1) Turn off the DC supply. The MAX2700/MAX2701 EV kits are fully assembled and factory tested. Follow the instructions in the Connections and Setup section for proper device evaluation. 2) Remove the network analyzer from the LNAIN and LNAOUT connections. The DC supply connections needed for testing the downconverter mixer are the same as in the LNA section. Connections and Setup 3) Set jumper J2 (X2_EN) to GND (LOW) to enable the LO doubler circuit. This section provides a step-by-step guide to setting up the MAX2700/MAX2701 EV kits and testing all three major functional blocks: LNA, I/Q demodulator, and VGAs. Do not turn on the DC power or RF signal generators until all connections are made. Low-Noise Amplifier 1) Set the SHDN jumper on the EV kit to VCC (HI). This enables the device to operate in the normal mode. 2) Set the GAIN_SET jumper on the EV kit to VCC (HI). This enables the LNA to operate in high-gain mode. 4 4) Connect an RF signal generator (with output disabled) to the LO SMA connector. Set the frequency to 980MHz for MAX2700 (1200MHz for MAX2701) and the output power to -10dBm. This is the LO signal. 5) Connect another RF signal generator to the RFIN SMA connector (with output disabled). Set the frequency to 1961MHz for MAX2700 (2401MHz for MAX2701) and the output power to -25dBm. This is the RF input signal. _______________________________________________________________________________________ MAX2700/MAX2701 Evaluation Kits 7) Turn on the DC supply. Enable the LO signal generator and RF input signal generator outputs. 8) Measure the peak-to-peak amplitude of the 1MHz IF signal on the oscilloscope with a high-impedance probe (VOUTp-p). Voltage gain can be calculated by the following formula: Voltage Gain = 20 log[((V OUTp-p ) / (2 VIN (RMS)] ✕ √2)) / VIN (RMS) = SQRT(50 ✕ 10-3 ✕ 10Pin(dBm)/10) Voltage Gain should be nominally 19.3dB for MAX2700 (18.1dB for MAX2701). Note: Compensate PIN for input balun loss (1.25dB) and input board loss (0.3dB) and VOUT p-p for the voltage divider network at the mixer output. To check the Q-channel performance of the I/Q demodulator, connect the oscilloscope to MIXQ and repeat the measurements from step 7 of the I/Q Demodulator section. 7) Connect a jumper across J1. 8) Perform a similar measurement between IIN2+ (J14) and IOUT2 (J13); voltage gain should be 30dB nominal between IIN2+ and IOUT2. Note: Compensate PIN for the input network loss and VOUTp-p for the voltage divider network at the amplifier output. 9) The corresponding VGAs in the Q channel (between QIN1+ and QOUT1 and between QIN2+ and QOUT2) can be tested in the same way. 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 Variable Gain Amplifiers 1) Remove the RF signal generators and oscilloscope from RFIN, LO, and MIXI connections. The DC supply connections needed for testing the VGAs are the same as in the LNA section. Turn off the DC supply while making connections. The MAX2700/MAX2701 EV kits can serve as board layout guides. Keep PC board trace lengths as short as possible to minimize parasitics. Keep decoupling capacitors close to the device, with a low inductance via connection to the ground plane. 2) Connect a variable voltage source, preset to +1.25V, to the VGC input of the EV kit. Do not turn on the supply. The MAX2700/MAX2701 EV kits have been optimized for operation at 1960MHz and 2400MHz, respectively. The MAX2700/MAX2701 EV kits can be configured to operate in the 1800MHz to 2100MHz band and the 2100MHz to 2500MHz band, respectively. Use the device parameters listed in the MAX2700/MAX2701 data sheet to determine the proper input and output matching components at other frequencies. 3) Connect an RF signal generator to the BNC connector of input IIN1+ (using appropriate connector adapters). Do not turn on the generator’s output. Set the generator for a output frequency of 1MHz at a -40dBm power level. Modifying the EV Kit 4) Connect the oscilloscope to the IOUT1 (for I channel signal) BNC connector. Set the oscilloscope to high-impedance-input mode. 5) Turn on the DC supply and the voltage source connected to the VGC input. 6) Measure the peak-to-peak output voltage of the 1MHz signal on the oscilloscope (VOUTp-p), and compute the voltage gain using the equation in the I/Q demodulator section. The voltage gain should be nominally 20dB between IIN1+ (J16) and IOU1 (J15). _______________________________________________________________________________________ 5 Evaluate: MAX2700/MAX2701 6) Connect the oscilloscope to the MIX_I (for I channel signal) BNC connector. Set the oscilloscope to high-impedance input mode. Figure 1a. MAX2700 EV Kit Schematic _______________________________________________________________________________________ VCC X2ENB VCC R8 0Ω R7 0Ω R10 0Ω R9 0Ω J4 VCC J5 R4 0Ω R3 0Ω J2 VCC TP1 J3 J1 VCC R12 0Ω R11 100Ω R6 100Ω R5 100Ω Z1 4.7nH C5 0 J20 VCC R2 100Ω R1 0Ω C44 10µF R45 0Ω C11 68pF C10 68pF 6 C8 100pF 12 11 10 9 8 GND 7 C7 1000pF C6 1000pF C9 0.01µF Z4 5pF 4 3 2 1 C3 1000pF GND 5 C2 68pF C1 0.1µF C43 68pF 48 47 14 GND J6 C13 OPEN L3 1.5nH 13 VCCLNA AGC SHDNB GAINSET GND GNDRF LNAIN GNDRF X2ENB VCCRF CEXT L7 0 C41 OPEN C48 OPEN CEXTB R40 0Ω 15 GND R39 1kΩ 45 16 J7 R13 1kΩ C15 0.056µF C12 22pF L2 OPEN 46 C40 22pF C42 OPEN GNDLO GNDRF C47 OPEN 44 C39 0.056µF R38 1kΩ R14 1kΩ VCC 18 C17 0.1µF R15 0Ω U1 C38 0.1µF 42 R37 3.6kΩ R36 1.1kΩ R44 51Ω J8 R16 1.1kΩ 19 C18 0.1µF MAX2700 43 C14 C16 100pF 0.01µF 17 MIXI MIXQ VCC GNDLO VCC1 J16 41 C37 0.1µF 40 C36 0.1µF R35 820Ω C35 0.056µF R33 1kΩ 39 J15 R32 0Ω C49 5pF 38 21 R41 51Ω R17 3.6kΩ C19 0.1µF R18 820Ω 20 J9 C20 0.056µF 22 R20 1kΩ R19 1kΩ 23 J14 37 C33 C34 100pF 0.01µF VCC R34 1kΩ IIN1B QIN1B J17 DCI1 DCQ1 J18 DCI1B DCQ1B C46 68pF IOUT1 DCQ2B C45 1000pF IND-0402 IIN1 QIN1 QIN2B DCQ2 DCQ2B QOUT2 VCCMIX RFINB J10 L4 5.6nH 24 C29 0.56µF R22 1.1kΩ R42 51Ω R21 3.6kΩ R26 0Ω L5 3.9nH L6 3.9nH R23 820Ω VCC R28 51Ω R27 51Ω R29 820Ω C24 0.56µF C25 68pF C23 0.1µF C22 0.1µF C21 0.1µF 25 26 27 28 29 C26 22pF 32 GNDMIX 30 33 IOUT2 C30 0.1µF 31 34 DC12B RFIN 35 DC12 C31 0.1µF R43 51Ω C27 22pF 36 C32 0.1µF R31 3.6kΩ R30 1.1kΩ IIN2B IIN2 VCC VCCLO GNDRF LO LNAOUT 2 1 VCC2 GNDMIX 2 1 QIN2 J19 R24 51Ω 4 C4 2.0pF C28 OPEN R25 51Ω 5 C50 2.0pF 3 2 J11 1 X9 LOGO X8 MTHOLE4 1 X7 MTHOLE4 1 X6 MTHOLE4 1 X5 MTHOLE4 1 J12 T1 BALUN/MUR/LDB J13 1 6 GND Evaluate: MAX2700/MAX2701 MAX2700/MAX2701 Evaluation Kits _______________________________________________________________________________________ VCC X2ENB VCC R8 0Ω R7 0Ω R10 0Ω R9 0Ω J4 VCC J5 R4 0Ω R3 0Ω J2 VCC TP1 J3 J1 VCC R12 0Ω R11 100Ω R6 100Ω R5 100Ω Z1 0.5pF C5 10pF J20 VCC R2 100Ω R1 0Ω R45 0Ω 4 C11 68pF C10 68pF 11 C8 100pF 12 C7 1000pF 10 9 8 GND 7 6 C3 1000pF GND 5 C2 68pF 3 48 47 14 GND J6 C13 2pF L3 2.7nH 13 VCCLNA AGC SHDNB GAINSET GND GNDRF LNAIN GNDRF X2ENB VCCRF CEXT L7 0 C41 OPEN C48 OPEN 15 C12 22pF L2 OPEN 46 C40 22pF C42 OPEN 45 16 J7 R13 1kΩ C15 0.056µF GND R39 1kΩ 44 R14 1kΩ VCC R15 0Ω C14 C16 100pF 0.01µF 17 U1 C38 0.1µF 42 R37 3.6kΩ R36 1.1kΩ R44 51Ω J8 19 C18 0.1µF MAX2701 43 18 C17 0.1µF C39 0.056µF R38 1kΩ MIXI MIXQ C47 OPEN CEXTB R40 0Ω 1 VCC C1 0.1µF 2 C43 68pF C6 1000pF C9 0.01µF Z4 1nH C44 10µF GNDLO VCC1 41 C37 0.1µF 40 C36 0.1µF R35 820Ω C35 0.056µF 39 R33 1kΩ J15 R32 0Ω C49 3pF 38 21 R41 51Ω R16 1.1kΩ R17 3.6kΩ C19 0.1µF R18 820Ω 20 J9 C20 0.056µF 22 R20 1kΩ R19 1kΩ 23 J14 37 C33 C34 100pF 0.01µF VCC R34 1kΩ IIN1B QIN1B J16 DCI1 DCQ1 J17 DCI1B DCQ1B J18 IOUT1 QOUT C46 68pF IND-0402 IIN1 QIN1 QIN2B DCQ2 DCQ2B QOUT2 VCCMIX RFINB J10 L4 5.6nH 24 C29 0.56µF R22 1.1kΩ R42 51Ω R21 3.6kΩ R26 0Ω L5 2.7nH L6 2.7nH R23 820Ω VCC R28 51Ω R27 51Ω R29 820Ω C24 0.56µF C25 68pF C23 0.1µF C22 0.1µF C21 0.1µF 25 26 27 28 29 C26 22pF 32 GNDMIX 30 33 IOUT2 C30 0.1µF 31 34 DC12B RFIN 35 DC12 C31 0.1µF R43 51Ω C27 22pF 36 C32 0.1µF R31 3.6kΩ R30 1.1kΩ IIN2B IIN2 C45 1000pF VCCLO GNDRF LO LNAOUT 2 1 GNDLO GNDRF GND VCC2 GNDMIX 2 1 QIN2 VCC R24 51Ω 4 C4 1.5pF C28 OPEN R25 51Ω 5 C50 1.5pF 3 2 J11 1 X9 LOGO X8 MTHOLE4 1 X7 MTHOLE4 1 X6 MTHOLE4 1 X5 MTHOLE4 1 J12 T1 MURATA LDB15C500A2400 J13 1 Evaluate: MAX2700/MAX2701 J19 MAX2700/MAX2701 Evaluation Kits Figure 1b. MAX2701 EV Kit Schematic 7 Evaluate: MAX2700/MAX2701 MAX2700/MAX2701 Evaluation Kits 1.0" 1.0" Figure 2. MAX2700/MAX2701 EV Kits PC Board Layout— Component Side Figure 3. MAX2700/MAX2701 EV Kits PC Board Layout— Ground Plane 1.0" 8 Figure 4. MAX2700/MAX2701 EV Kits PC Board Layout— Power Plane _______________________________________________________________________________________ MAX2700/MAX2701 Evaluation Kits 1.0" Figure 5. MAX2700/MAX2701 EV Kits Component Placement Guide—Top Silkscreen Figure 6. MAX2700/MAX2701 EV Kits 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 _____________________9 © 2001 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products. Evaluate: MAX2700/MAX2701 1.0"