19-2109; Rev 0; 7/01 MAX2306/MAX2308/MAX2309 Evaluation Kits The MAX2306/MAX2308/MAX2309 evaluation kits (EV kits) simplify testing of the MAX2306/MAX2308/ MAX2309 IF receivers. These kits allow evaluation of the devices’ variable-gain amplifier (VGA), I/Q demodulator, dual-band voltage-controlled oscillators (VCOs), synthesizer, 3-wire programming interface, and powermanagement features. The EV kits provide 50Ω SMA connectors for all signal inputs and outputs. A varactor-based tank circuit is provided for the on-chip VCO and can be tuned by a potentiometer or an external voltage or phase-locked with the on-chip phase-locked loop (PLL). Features ♦ Dual Oscillators (MAX2306) ♦ On-Board PLL Synthesizer ♦ 3-Wire Interface ♦ Single-Ended or Differential Baseband Outputs ♦ +2.7V to +5.5V Single-Supply Operation ♦ SMA Connectors on All Signal Ports ♦ PC Control Software (available at www.maxim-ic.com) Ordering Information MAX2306EVKIT PART TEMP. RANGE -40°C to +85°C IC PACKAGE 28 QSOP-EP* MAX2308EVKIT -40°C to +85°C 28 QSOP-EP* MAX2309EVKIT -40°C to +85°C 28 QSOP-EP* *Exposed pad Component List DESIGNATION QTY DESCRIPTION C1, C33, C34 3 47pF ±10%, 25V min ceramic capacitors (0402) C2 1 2pF ±0.1pF, 25V min ceramic capacitor (0402) (MAX2306) C3 1 33pF ±10%, 25V min ceramic capacitor (0402) (MAX2306) C4 1 C5 C6 DESIGNATION QTY DESCRIPTION C9, C10, C11, C13, C14, C15, C21, C22, C28, C30, C35, C37, C38, C42, C46, C57, C59 15 0.01µF ±10%, 25V min ceramic capacitors (0402) 33pF ±10%, 25V min ceramic capacitor (0402) (MAX2306/MAX2309) C16 1 3.0pF ±0.1pF, 25V min ceramic capacitor (0402) (MAX2306/MAX2308) 1 2pF ±0.1pF, 25V min ceramic capacitor (0402) (MAX2306/MAX2308) C18 1 0.01µF ±1%, 25V min ceramic capacitor (0402) (MAX2306/MAX2308) 1 33pF ±10%, 25V min ceramic capacitor (0402) C19, C20 2 10pF ±10%, 25V min ceramic capacitors (0402) C7 1 33pF ±10%, 25V min ceramic capacitor (0402) (MAX2306/MAX2308) C27, C56, C58 3 10µF ±10%, 16V min tantalum capacitors AVX TAJC106K016 C8, C12, C23, C24, C25, C31 6 330pF ±10%, 25V min ceramic capacitors (0402) C29 1 0.068µF ±10%, 25V min ceramic capacitor (0402) C36 0 Open C43 1 1000pF ±10% capacitor (0402) (MAX2309) ________________________________________________________________ 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: MAX2306/MAX2308/MAX2309 General Description MAX2306/MAX2308/MAX2309 Evaluation Kits Evaluate: MAX2306/MAX2308/MAX2309 Component List (continued) DESIGNATION DESCRIPTION C44, C47–C53 8 0.1µF ±10%, 25V min ceramic capacitors (0402) C54, C55 2 0.1µF ±10%, 25V min ceramic capacitors (0805) C60 1 0Ω resistor (0402) (MAX2309) C61 1 2pF ±0.1pF, 25V min ceramic capacitor (0402) (MAX2309) D2 1 Varactor diode (MAX2306) Alpha SMV1763-079 D3 1 Varactor diode Alpha SMV1763-079 1 Varactor diode (MAX2306/MAX2308) Alpha SMV1763-079 1 Varactor diode (MAX2306/MAX2309) Alpha SMV1763-079 D4 D5 L1 L2 2 QTY 1 33nH inductor (MAX2306) Coilcraft 0603CS-33NXGBC 1 33nH inductor (MAX2306/MAX2308) Coilcraft 0603CS-33NXGBC DESIGNATION QTY DESCRIPTION 10kΩ ±5% resistor (0402) (MAX2306/MAX2308) R5 R6 1 100Ω ±5% resistor (0402) (MAX2306/MAX2309) R8, R14, R16, R18 4 100Ω ±5% resistors (0402) R7 1 49.9Ω ±1% resistor (0402) R9 1 681Ω ±1% resistor (0402) R10 1 4.7kΩ ±5% resistor (0402) R11, R19, R31, R32, R33, R34, R40, R81 8 5kΩ ±5% resistors (0402) R12, R22 2 47kΩ ±5% resistors (0402) R13, R24 2 10kΩ Bourns variable resistors, Digi-Key 3296W-104-ND R15, R17 2 100Ω ±5% resistors (0402) (MAX2309) R20, R21, R25, R35 0 Open R23 1 2.4kΩ ±5% resistor (0402) R26 1 47kΩ ±5% resistor (0402) R41 1 0Ω resistor (0402) (MAX2306) R44 1 0Ω resistor (0402) (MAX2309) J18 1 20-pin header JU3, JU9, JU10, JU11 4 Two-pin headers 220nH inductor Coilcraft 0603CS-R22TKBC T1 1 Balun transformer, Toko DB458-1011 1 33nH inductor (MAX2309) Coilcraft 0603CS-33NXGBC U1 1 MAX2306EGI, MAX2308EGI, or MAX2309EGI IC 2 MAX4108ESA 1 270nH inductor Toko LL1608-PSR275 U2, U3 L6 None 1 Q1 1 Open MAX2306/MAX2308/MAX2309 circuit board R1, R38, R39 3 0Ω resistors (0402) None 1 R2 1 10kΩ ±5% resistor (0402) (MAX2306) MAX2306/MAX2308/MAX2309 data sheet INTF2300 Interface Board 1 3-wire programming and interface board None 1 20-pin ribbon cable L3 1 120nH inductor (MAX2306/MAX2308) Coilcraft 0603CS-33NXGBC L4 1 L5 R3 1 10kΩ ±5% resistor (0402) (MAX2306/MAX2309) R4 1 10kΩ ±5% resistor (0402) _______________________________________________________________________________________ MAX2306/MAX2308/MAX2309 Evaluation Kits PHONE FAX Alpha Industries SUPPLIER 617-935-5150 617-933-2359 AVX 803-946-0690 803-626-3123 Coilcraft 847-639-6400 847-639-1469 Murata 770-436-1300 770-436-3030 Toko 708-297-0070 708-699-1194 Quick Start The MAX2306/MAX2308/MAX2309 EV kits are fully assembled and factory tested. Follow the instructions in the Connections and Setup section. Recommended Test Equipment The test equipment recommended to verify MAX2306/ MAX2308/MAX2309 operation is listed in Table 1. This list is intended as a guide only; substitutions may be possible. Connections and Setup The following sections provide instructions for getting the EV kit running in CDMA mode. CDMA Mode Perform the following steps to evaluate the MAX2306/ MAX2308/MAX2309 in CDMA mode: 1) Verify that shunts JU3, JU10, and JU11 are in place. Table 1. Recommended Equipment EQUIPMENT RF Signal Generators (2) DESCRIPTION HP 8648A or equivalent. Capable of delivering -70dBm to -10dBm of output power in the 10MHz to 500MHz frequency range. One generator is required to test the receive signal path and the other is for the reference frequency. Oscilloscope For viewing the demodulator outputs. Power Supply (3) Capable of providing at least 100mA at +2.7V to +5.5V. Additional Voltage Source For external control of VGA (optional). Personal Computer 486DX33 or better, with Windows95® or later version of Windows® operating system and a parallel port. INTF2300 Interface Board Provided with EV kit. 2) Connect the INTF2300 interface cable as shown in Figure 11. (Pin 1 of the interface cable corresponds to the red wire; pin 1 is designated in silkscreen on each of the PC boards.) 3) Connect a +2.75V power supply to the VCC and GND terminals. Set the other two supplies to +5V and -5V and then connect to the appropriate +5V, -5V, and GND terminals on the EV board. 4) Install and run Maxim’s CDMA control software (available at www.maxim-ic.com). Under the Technical Support heading, click on SOFTWARE. Select the correct software to download and install. 5) With the MAX2306, MAX2308, or MAX2309 screen active, set the control pins. Set SHDN to “H”. On the MAX2306, set the MODE to “H”. On the MAX2309, set STBY, BUF_EN, and DIVSEL to “H”. Turn on the power supplies. Under Preset Modes select CDMA mode. Under Program Dividers set M1 and M2 to 306. Set R1 and R2 to 16 and then click Send Data for M1, M2, R1, and R2. Under Control Register, click on Send Data. 6) Connect a signal generator to the REF port, configured for a sine wave with a 19.2MHz frequency and a -10dBm amplitude. (The REF port is 50Ω terminated.) 7) Connect a signal generator with 183.72MHz at -66dBm and apply it to the CDMA differential port. 8) Set VGC to 2.5VDC by rotating potentiometer R13. Optionally, an external VGC voltage may be used by removing jumper JU3 and applying a DC voltage to JU3 at the pin labeled VGC. 9) Configure an oscilloscope to measure a highimpedance, 1Vp-p, 100kHz waveform. Connect it to the I or Q output. Voltage gain can be calculated by: V OUTp-p Gain = 20log 2 2V IN PIN (dBm) - 30 10 VIN (RMS) = 500 × 10 Gain = approximately 60dB Note: The balun loss is not taken into account. This loss is typically less than 0.5dB. There may also be some loss through the MAX4108 op amp. Windows95 and Windows are registered trademarks of Microsoft Corp. _______________________________________________________________________________________ 3 Evaluate: MAX2306/MAX2308/MAX2309 Component Suppliers Evaluate: MAX2306/MAX2308/MAX2309 MAX2306/MAX2308/MAX2309 Evaluation Kits Adjustments and Control REF Inputs VGC Adjust The REF port is AC-coupled and terminated for use with a 50Ω signal source. The MAX2306/MAX2308/MAX2309 EV kits are configured with a 10kΩ trim pot for setting and adjusting the VGA gain. An external supply can be used by removing the 2-pin shunt (JU3) and by directly connecting the supply to JU3 at pin labeled VGC. The VGC voltage must be clean to minimize undesired amplitude modulation. The I/Q outputs are self-biased baseband outputs. The differential I/Q outputs are converted to single-ended outputs with MAX4108 op amps. Interface Control The interface port is designed to use a 20-pin ribbon cable. Ten pins are signal lines, and the other ten pins are digital grounds. Pin 1 of the interface cable is red. Pin 1 is also designated in silkscreen on each of the PC boards. I/Q Outputs PC Board Layout/ Construction The MAX2306/MAX2308/MAX2309 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 through connection to the ground plane. Detailed Description The following sections cover the EV kits’ circuit blocks in detail. (Refer to the MAX2306/MAX2308/MAX2309 data sheet for additional information.) CDMA Inputs The on-board balun converts the CDMA DIFF input to a differential signal for the MAX2306/MAX2308/MAX2309. The 50Ω source impedance is transformed to 500Ω by the combination of L4, R9, C19, C20, and the 4:1 impedance ratio of the input balun. FM Inputs The EV kit is configured for single-ended (50Ω) operation at the FM connector. The matching network transforms 50Ω to 850Ω. 4 INTF2300 Interface Board The INTF2300 interface board is used to control the 3wire interface of a device under test from the parallel port of a PC. This board level translates 5V logic from the PC to VCC of the device under test. The INTF2300 also provides buffering and EMI filtering. The recommended operating supply voltage range is +2.7V to +3.6V. For operation of the MAX2306/MAX2309 above +3.6V, jumper JU1 may be removed and an external supply voltage of +3.6V may be applied between VCC (pin 2) and GND (pin 1) (Figure 11). _______________________________________________________________________________________ _______________________________________________________________________________________ C31 330pF R10 4.7kΩ R25 OPEN IOUT- IOUT+ REF C36 OPEN D2 D3 J12 J15 J3 MODE/DIVSEL R5 10kΩ D4 R4 10kΩ R3 10kΩ D5 R2 10kΩ C29 R1 0Ω 0.068µF R23 2.4kΩ R24 10kΩ RXI- RXI+ C6 33pF C1 47pF C11 0.01µF C9 0.01µF VCCA VCCA L2 33nH MODE SHDN REF 10 IOUT- 9 IOUT+ 8 7 5 V CC 6 GND 4 3 TANKH- 2 TANKH+ 1 TANKL- 28 TANKL+ 26 CP_OUT 27 GND BYP 25 BYP 11 LOCK MAX2306 U1 BYP 14 15 16 17 18 19 R9 681Ω 20 21 QOUT- LOCK 12 QOUT+ 13 CLK EN DATA VCC VGC CDMA- CDMA+ FM+ FM- C14 C15 C13 0.01µF 0.01µF 0.01µF 24 23 22 L1 33nH C46 0.01µF C10 0.01µF VCCD SHDN R41 0Ω C5 C7 2pF 33pF C4 33pF C2 2pF C30 0.01µF C3 33pF R7 49.9Ω R35 OPEN JU9 DATA C22 0.01µF C35 0.01µF CLK EN C20 10pF C19 10pF L3 120nH R12 47kΩ VCCA C21 0.01µF L4 220nH C16 3.0pF C18 0.01µF RXQ- RXQ+ J14 J13 JU3 QOUT- QOUT+ TOKO 4458D8-1011 T1 J4 J5 FM VCC R13 10kΩ CDMA DIFF Evaluate: MAX2306/MAX2308/MAX2309 VCC MAX2306/MAX2308/MAX2309 Evaluation Kits Figure 1. MAX2306EV Kit Schematic 5 6 REF Figure 2. MAX2308EV Kit Schematic _______________________________________________________________________________________ IOUT- IOUT+ C31 330pF R10 4.7kΩ R25 OPEN C36 OPEN D3 J12 J15 J3 R5 10kΩ D4 R4 10kΩ R7 49.9Ω R35 OPEN RXI- RXI+ R23 2.4kΩ C29 0.068µF R24 10kΩ R1 0Ω VCC C7 33pF C6 33pF SHDN C1 47pF C11 0.01µF C9 0.01µF VCCA VCCA SHDN REF GND VCC N.C. N.C. N.C. 10 IOUT- 9 IOUT+ 8 7 6 5 28 1 4 3 TANKH- 2 TANKH+ 27 GND 26 CP_OUT BYP 25 BYP 11 LOCK MAX2308 U1 BYP 14 15 16 17 18 19 R9 681Ω 20 21 QOUT- LOCK 12 QOUT+ 13 CLK EN DATA VCC VGC CDMA- CDMA+ FM+ FM- C14 C15 C13 0.01µF 0.01µF 0.01µF 24 23 22 L2 33nH C46 0.01µF C10 0.01µF VCCD C5 2pF C30 0.01µF JU9 C22 0.01µF C35 0.01µF CLK EN DATA C20 10pF C19 10pF L3 120nH R12 47kΩ VCCA C21 0.01µF L4 220nH C16 3.0pF C18 0.01µF RXQ- RXQ+ J14 J13 JU3 QOUT- QOUT+ TOKO 4458D8-1011 J4 FM R13 10kΩ CDMA DIFF VCC J5 Evaluate: MAX2306/MAX2308/MAX2309 MAX2306/MAX2308/MAX2309 Evaluation Kits _______________________________________________________________________________________ C31 330pF IOUT- IOUT+ REF R23 2.4kΩ R4 10kΩ D3 D5 C29 0.068µF R3 10kΩ R1 0Ω J12 J15 J3 MODE/DIVSEL R10 4.7kΩ R25 OPEN C36 OPEN R24 10kΩ C6 33pF RXI- RXI+ R7 49.9Ω SHDN C1 47pF C11 0.01µF C9 0.01µF C60 0Ω VCCA VCCA SHDN REF GND VCC DIVSEL LOOUT BUFEN 10 IOUT- 9 IOUT+ 8 7 6 5 28 4 3 2 TANKH- 1 TANKH+ 27 GND 26 CP_OUT BYP 25 BYP 11 LOCK MAX2309 U1 BYP C14 C13 0.01µF 0.01µF 24 23 L5 33nH C46 0.01µF C10 0.01µF VCCD J2 BUFEN LOOUT C61 2pF C30 0.01µF C4 33pF R44 0Ω R35 OPEN JU9 14 15 16 17 18 19 R9 681Ω 20 22 QOUT- LOCK 12 QOUT+ 13 CLK EN DATA VCC VGC CDMA- CDMA+ STBY N.C. 21 C22 0.01µF C35 0.01µF CLK EN DATA VCCA C21 0.01µF R12 47kΩ STBY L4 220nH C15 0.01µF C20 10pF C19 10pF RXQ- RXQ+ J14 J13 JU3 QOUT- QOUT+ TOKO 4458D8-1011 R13 10kΩ CDMA DIFF VCC J5 Evaluate: MAX2306/MAX2308/MAX2309 VCC MAX2306/MAX2308/MAX2309 Evaluation Kits Figure 3. MAX2309EV Kit Schematic 7 Evaluate: MAX2306/MAX2308/MAX2309 MAX2306/MAX2308/MAX2309 Evaluation Kits R11 5kΩ +5V C51 0.1µF R31 5kΩ C52 0.1µF RXI+ 2 8 IN- R38 0Ω 7 6 OUT 3 R32 5kΩ C54 0.1µF J11 1 5 IN+ U3 4 RXI- MAX4108 R81 5kΩ C50 0.1µF C53 0.1µF -5V I/Q DEMODULATOR RECEIVERS R19 5kΩ +5V C47 0.1µF R33 5kΩ C48 0.1µF RXQ2 8 IN- R39 0Ω 7 6 OUT 3 R34 5kΩ C55 0.1µF J16 1 5 IN+ U2 4 RXQ+ MAX4108 R40 5kΩ C49 0.1µF C44 0.1µF -5V Figure 4. MAX2306/MAX2308/MAX2309 EV Kit Schematic (I/Q Section) 8 _______________________________________________________________________________________ VCC VCC VCC -5V GND ICCA JU10 C37 0.01µF C27 10µF C58 10µF C56 10µF *SEE COMPONENT LIST J10 J9 J8 J7 J1 VCC C28 0.1µF C59 0.1µF C57 0.1µF CLK C33 0.01µF -5V EN DATA L6 270nH VCCA R14 100Ω C25 330pF ICCD JU11 C24 330pF R18 100Ω R16 100Ω C23 330pF VCC C42 0.01µF 17 J18–I 18 R17* C38 0.01µF 1 J18–A 2 5 J18–C 6 7 J18–D 8 9 J18–E 10 12 J18–F 11 20 J18–J 19 R15* C34 0.01µF 4 J18–B 3 13 J18–G 14 15 J18–H 16 VCCD VCC R8 100Ω R6* R20 OPEN R22 47kΩ C12 330pF C8 330pF 1 2 3 VCC SHDN Q1 OPEN R21 OPEN D1 OPEN MODE/DIVSEL LOCK Evaluate: MAX2306/MAX2308/MAX2309 +5V +5V VCC BUFEN STBY MAX2306/MAX2308/MAX2309 Evaluation Kits Figure 5. MAX2306/MAX2308/MAX2309 EV Kit Schematics (Supplies and Interface Sections) (continued) _______________________________________________________________________________________ 9 Evaluate: MAX2306/MAX2308/MAX2309 MAX2306/MAX2308/MAX2309 Evaluation Kits 1.0" 1.0" Figure 6. MAX2306/MAX2308/MAX2309 EV Kit PC Board Layout—Component Side (Layer 1) Figure 7. MAX2306/MAX2308/MAX2309 EV Kit PC Board Layout—Ground Plane (Layer 2) 1.0" Figure 8. MAX2306/MAX2308/MAX2309 EV Kit PC Board Layout—Inner Layer (Layer 3) 10 ______________________________________________________________________________________ MAX2306/MAX2308/MAX2309 Evaluation Kits Evaluate: MAX2306/MAX2308/MAX2309 1.0" 1.0" Figure 9. MAX2306/MAX2308/MAX2309 EV Kit PC Board Layout—Solder Side (Layer 4) Figure 10. MAX2306/MAX2308/MAX2309 EV Kit Component Placement Guide—Component Side 1.0" Figure 11. MAX2306/MAX2308/MAX2309 EV Kit Component Placement Guide—Solder Side ______________________________________________________________________________________ 11 Evaluate: MAX2306/MAX2308/MAX2309 MAX2306/MAX2308/MAX2309 Evaluation Kits GND VCC JU1 1 2 3 DB25M 1 1 TO PC PARALLEL PORT 20 6 10 INTF2300 10 DUT MAX2306 MAX2308 MAX2309 VCCD 6 20 1 1 Figure 12. INTF2300 Interface Board 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 © 2001 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.