19-2013; Rev 2; 5/01 MAX2361/MAX2363W Evaluation Kits The MAX2363W EV kit is for evaluation of the MAX2363 for single band WCDMA. Features ♦ On-Board PCS and Cellular VCOs ♦ 50Ω SMA Connectors on All RF Ports ♦ BNC Connectors for Baseband Inputs ♦ Low-Power Shutdown Mode ♦ PC Control Software Available at www.maxim-ic.com ♦ SPI™/QSPI™/MICROWIRE™ Compatible ♦ WCDMA Option (MAX2363WEVKit) Ordering Information PART TEMP. RANGE IC PACKAGE MAX2361EVKIT MAX2363WEVKIT -40°C to +85°C -40°C to +85°C 48 QFN-EP* 48 QFN-EP* *Exposed paddle MAX2361 Component List DESIGNATION C1, C44, C45, C46 C2, C16, C20, C39, C40, C60, C64, C65, C67, C68, C80 C3, C22, C23, C41 C4, C5, C38, C42, C58, C75, C79, C88, C91, C93, C95, C96, C97 C6 QTY DESCRIPTION 4 15pF ±5% ceramic capacitors (0402) Murata GRM36COG150BJ50 or Taiyo Yuden UMK105CH150JW 11 100pF ±5% ceramic capacitors (0402) Murata GRM36COG101J050 or Taiyo Yuden UMK105CH101JW 4 33pF ±5% ceramic capacitors (0402) Murata GRM36COG330J050 or Taiyo Yuden UMK105CH330JW DESIGNATION QTY C8, C9, C11, C15, C17, C34, C55, C57 8 0.01µF ceramic caps (0402) Murata GRM36Y5V103Z050 or Taiyo Yuden EMK105BJ103KV C12 1 1.2pF ±0.1pF ceramic capacitor (0402) Murata GRM36COG1R2B050 or Taiyo Yuden EVK105CH1R2JW C13, C14, C26, C27, C48, C56, C66, C84, C85 0 Not installed (0402) 2 9pF ±5% ceramic capacitors (0402) Murata GRM36COG090J050 or Taiyo Yuden UMK105CH090JW 1 0.033µF ±10% ceramic capacitor (0402) Murata GRM36X7R333K010 or Taiyo Yuden LMK105BJ333KV 1 0.022µF ±10% ceramic capacitor (0402) Murata GRM36X7R223K016 or Taiyo Yuden EMK105BJ223KV 1 1µF ±10% ceramic capacitor (0805) Murata GRM40X7R105K010A or Taiyo Yuden LMK212BJ105KG C24, C25 13 0.1µF ceramic capacitors (0402) Murata GRM36Y5V104Z016 or Taiyo Yuden LMK105BJ104KV C28 1 4.7pF ±0.1pF ceramic capacitor (0402) Murata GRM36COG4R7B050 or Taiyo Yuden EVK105CH4R7JW 12 1000pF ±10% ceramic caps (0402) Murata GRM36X7R102K050 or Taiyo Yuden UMK105B102KW C29 C7, C10, C18, C19, C21, C30, C31, C35, C63, C76, C78, C81 C32 SPI and QSPI are trademarks of Motorola, Inc. MICROWIRE is a trademark of National Semiconductor Corp. DESCRIPTION ________________________________________________________________ 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: MAX2361/MAX2363/MAX2365 General Description The MAX2361 evaluation kit (EV kit) simplifies testing of the MAX2361/MAX2363/MAX2365. The EV kit provides 50Ω SMA connectors for all RF inputs and outputs. A varactor-based tank circuit is provided for the on-chip voltage-controlled oscillator (VCO) and phase locked with an on-chip PLL. I/Q baseband inputs come with standard BNC connectors. The EV kit allows evaluation of the MAX2361/MAX2363/ MAX2365s’ I/Q modulator, IF VGA, RF upconverter, dual-band IF VCOs, dual synthesizer, 3-wire programming interface, and power-management features. MAX2361/MAX2363W Evaluation Kits Evaluate: MAX2361/MAX2363/MAX2365 MAX2361 Component List (continued) DESIGNATION C36 C37 C47, C50 C49 C51 C53, C54 2 QTY DESCRIPTION DESIGNATION QTY D3 1 Not installed (LED) 1 3300pF ±10% ceramic capacitor (0402) Murata GRM36X7R332K050 or Taiyo Yuden UMK105B332KW FL1 1 130MHz bandpass filter Murata LFSH30N32M0130A 1 2 1 1 2 0.047µF ±10% ceramic capacitor (0402) Murata GRM36X7R473K010 or Taiyo Yuden LMK105BJ473KV 9.1pF ±5% ceramic capacitors (0402) Murata GRM36COG9R1J050 or Taiyo Yuden EVK105CH9R1JW 2.7pF ±0.1pF ceramic capacitor (0402) Murata GRM36COG2R7B050 or Taiyo Yuden EVK105CH2R7JW 1.5pF ±0.1pF ceramic capacitor (0402) Murata GRM36COG1R5B050 or Taiyo Yuden EVK105CH1R5JW 10pF ±5% ceramic capacitors (0402) Murata GRM36COG100J050 or Taiyo Yuden UMK105CH100JW C70, C71 2 22µF 10V tantalum capacitors AVX TAJB226K010 C72, C73, C82, C83, C94 5 1µF tantalum capacitors (0603) Murata GRM39Y5V105Z010 C74, C77, C86 3 10µF 10V tantalum capacitors AVX TAJB106M010 D1, D2, D4, D5 4 Varactor diodes Alpha Industries SMV1763-079 DESCRIPTION FL2 0 Not installed J3, J7 2 BNC connectors JP1 1 20-pin header receptacle JU1–JU4, JU6–JU10 9 2-pin headers L1 1 7.5nH ±5% inductor (0603) Coilcraft 0603CS-7N5XJBC L10 1 11nH ±5% inductor (0603) Coilcraft 0603CS-11NXJBC L11 1 18nH ±5% inductor (0603) Coilcraft 0603CS-18NXJBC L16 1 220nH ±5% (0805) inductor Coilcraft 0805CS -221XJBC L2, L3 2 100nH ±5% inductors (0603) Coilcraft 0603CS-R10XJBC L4 1 15nH ±5% inductor (0603) Coilcraft 0603CS-15NXJBC L5, L19 2 220nH ±5% inductors (0603) Coilcraft 0603CS-R22XJBC L6 1 0Ω resistor (0402) L9 1 43nH ±5% inductor (0603) Coilcraft 0603CS-43NXJBC Q1, Q2 2 NPN transistor Central Semiconductor CMPT8099 R1, R2, R7, R19, R24, R47, R52 7 47kΩ ±5% resistors (0402) R3 1 51kΩ ±5% resistor (0402) R4, R5, R29, R30 4 1kΩ ±5% resistors (0402) R6, R10, R12, R15, R17, R25, R26, R33, R34, R39, R46, R70, R73 0 Not installed (0402) _______________________________________________________________________________________ MAX2361/MAX2363W Evaluation Kits DESIGNATION QTY DESCRIPTION DESIGNATION QTY DESCRIPTION RFL, RFH0, RFH1, REF, TANKH BYP, IFLO, IFOUTL, IFINL 8 SMA connectors, PC edge-mount EF Johnson 142-0701-801 VBAT, VREG, +5V, GND (3) 6 2-pin headers 1kΩ ±1% resistors (0402) T2, T3 2 Baluns ,Toko 458DB-1011 10kΩ ±5% resistors (0402) U1 1 MAX2361EGM 5.1kΩ ±5% resistors (0402) U2 1 +2.8V LDO MAX8867EUK28 U3, U4 2 Dual op-amp MAX412ESA U5, U8 2 +3.0V LDO MAX8867EUK30 V1 1 1750MHz VCO Murata MQE925-1750-T7 V2 1 967MHz VCO Murata MQK002-967 None 1 MAX2361/MAX2363/MAX2365 data sheet None 1 INTF2300 board None 1 Ribbon cable R8, R16, R28, R48, R50, R51 6 511Ω ±1% resistors (0603) R9, R18 2 39Ω 1% resistors (0603) R11, R37 2 22Ω ±5% resistors (0402) R13, R22 2 680Ω ±5% resistors (0402) R14, R21, R41, R42 4 100Ω ±1% resistors (0402) R23, R45 2 R27, R74 2 R31, R32, R35, R36 4 R38, R44, R49 R55, R58, R59, R60, R61, R62, R76 10 R40 1 12kΩ ±5% resistor (0402) R43, R54, R56 3 470Ω ±5% resistors (0402) R53, R57 2 150Ω ±5% resistors (0402) R64 1 20kΩ ±5% resistor (0402) R71 1 130kΩ ±5% resistor (0402) R72 1 0Ω resistors (0402) 2.4kΩ ±5% resistor (0402) _______________________________________________________________________________________ 3 Evaluate: MAX2361/MAX2363/MAX2365 MAX2361 Component List (continued) MAX2361/MAX2363W Evaluation Kits Evaluate: MAX2361/MAX2363/MAX2365 MAX2363W Component List DESIGNATION C2, C16, C20, C39, C59, C60, C80 C3, C22, C23 C4, C5, C33, C42, C75, C79, C88, C91, C93, C95, C96, C97 C6 C7, C10, C18, C19, C21, C30, C31, C35, C63, C76, C78, C81 C8, C9, C15, C17, C34, C52, C55 C12 C13, C14, C26, C27, C48, C56, C66, C84, C85 C24, C25 C28 4 QTY DESCRIPTION 7 100pF ±5% ceramic capacitors (0402) Murata GRM36COG101J050 or Taiyo Yuden UMK105CH101JW 3 33pF ±5% ceramic capacitors (0402) Murata GRM36COG330J050 or Taiyo Yuden UMK105CH330JW 12 0.1µF ceramic capacitors (0402) Murata GRM36Y5V104Z016 or Taiyo Yuden LMK105BJ104KV 1 4.7pF ±0.1pF ceramic capacitor (0402) Murata GRM36COG4R7B050 or Taiyo Yuden EVK105CH4R7JW 12 1000pF ±10% ceramic capacitors (0402) Murata GRM36X7R102K050 or Taiyo Yuden UMK105B102KW 7 1 0.01µF ceramic capacitors (0402) Murata GRM36Y5V103Z050 or Taiyo Yuden EMK105BJ103KV 1.2pF ±0.1pF ceramic capacitor (0402) Murata GRM36COG1R2B050 or Taiyo Yuden EVK105CH1R2JW 0 Not installed (0402) 2 9pF ±5% ceramic capacitors (0402) Murata GRM36COG090J050 or Taiyo Yuden UMK105CH090JW 1 0.033µF ±10% ceramic capacitor (0402) Murata GRM36X7R333K010 or Taiyo Yuden LMK105BJ333KV DESIGNATION QTY DESCRIPTION 1 0.022µF ±10% ceramic capacitor (0402) Murata GRM36X7R223K016 or Taiyo Yuden EMK105BJ223KV 1 1µF ±10% ceramic capacitor (0805) Murata GRM40X7R105K010A or Taiyo Yuden LMK212BJ105KG 1 150pF ±5% ceramic capacitor (0402) Murata GRM36COG151J050 or Taiyo Yuden UMK105B151JW C37 1 2200pF ±10% ceramic capacitor (0402) Murata GRM36X7R222K050 or Taiyo Yuden LMK105BJ222KV C43, C72, C73, C94 4 1µF tantalum capacitors (0603) Murata GRM39Y5V105Z010 C44, C45, C46 3 15pF ±5% ceramic capacitors (0402) Murata GRM36COG150J50 or Taiyo Yuden UMK105CH150JW C47, C50 2 4pF ±0.25pF ceramic capacitors (0402) Murata GRM36COG040C050 C53, C54 2 10pF ±5% ceramic capacitors (0402) Murata GRM36COG100J050 or Taiyo Yuden UMK105CH100JW C70, C71 2 22µF 10V tantalum capacitors AVX TAJB226K010 C74, C77, C86 3 10µF 10V tantalum capacitors AVX TAJB106M010 C29 C32 C36 _______________________________________________________________________________________ MAX2361/MAX2363W Evaluation Kits DESIGNATION QTY DESCRIPTION DESIGNATION QTY R8, R16, R28, R48, R50, R51 6 DESCRIPTION D1, D2, D4, D5 4 Varactor diodes Alpha Industries SMV1763-079 D3 0 Not installed (LED) R9, R18 2 24Ω 1% resistors (0603) R13, R22 2 680Ω ±5% resistors (0402) R14, R21, R41, R42 4 100Ω ±1% resistors (0402) FL2 1 380MHz bandpass filter Murata LFSH25N34M0380A J3, J7 2 BNC connectors JP1 1 20-pin header receptacle 511Ω ±1% resistors (0603) R20 1 22Ω 5% resistor (0402) R23, R45 2 1kΩ ±1% resistors (0402) R25, R33, R34, R38, R39, R59, R62, R76 8 0Ω resistors (0402) JU1–JU4, JU6–JU10 9 2-pin headers L1 0 Not installed L2, L3 2 39nH ±5% inductors (0603) Coilcraft 0603CS-39NXJBC R27, R74 2 10kΩ ±5% resistors (0402) L4 1 15nH ±5% inductor (0603) Coilcraft 0603CS-15NXJBC R31, R32, R35, R36 4 5.1kΩ ±5% resistors (0402) L5 1 68nH ±5% inductor (0603) Coilcraft 0603CS-68NXJBC R40 1 30kΩ ±5% resistor (0402) R43, R54, R56 3 470Ω ±5% resistors (0402) L6 1 0Ω resistor (0402) R57 1 150Ω ±5% resistor (0402) L7, L19 2 220nH ±5% (0603) inductors Coilcraft 0603CS -R22XJBC R64 1 20kΩ ±5% resistor (0402) R71 1 130kΩ ±5% resistor (0402) 1 43nH ±5% inductor (0603) Coilcraft 0603CS-43NXJBC R72 1 2.4kΩ ±5% resistor (0402) RFH0, REF, IFINL, IFOUTL 4 SMA connectors, PC edge-mount EF Johnson 142-0701-801 L10 1 11nH ±5% inductor (0603) Coilcraft 0603CS-11NXJBC L16 0 Not installed 0 2 NPN transistors Central Semiconductor CMPT8099 Not installed SMA connectors PC edge-mount EF Johnson 142-0701-801 Q1, Q2 RFL, RFH1, LOL, LOH, TANKH BYP, IFLO VBAT, VREG, +5V, GND (3) 6 2-pin headers 2 Baluns Toko 458DB-1011 L9 R1, R2, R7, R19, R24, R47, R52 7 47kΩ ±5% resistors (0402) T2, T3 R3 1 51kΩ ±5% resistor (0402) U1 1 MAX2363EGM U2 1 +2.8V LDO MAX8867EUK28 R4, R5, R29, R30 R6, R10, R12, R15, R17, R25, R26, R33, R34, R39, R46, R70, R73 4 0 1kΩ ±5% resistors (0402) Not installed (0402) U3, U4 2 Dual op amps MAX412ESA U5, U8 2 +3.0V LDO MAX8867EUK30 V3 1 2330MHz VCO Murata MQL304-2330 _______________________________________________________________________________________ 5 Evaluate: MAX2361/MAX2363/MAX2365 MAX2363W Component List (continued) Evaluate: MAX2361/MAX2363/MAX2365 MAX2361/MAX2363W Evaluation Kits MAX2363W Component List (continued) DESIGNATION QTY None 7 Shunts for JU1, JU3, JU6–JU10 DESCRIPTION None 1 MAX2361/MAX2363/MAX2365 data sheet None 1 INTF2300 board None 1 Shunt for JU2 None 1 Ribbon cable Component Suppliers SUPPLIER Alpha Industries PHONE FAX 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 Taiyo Yuden 408-573-4150 408-573-4159 Toko 708-297-0070 708-699-1194 Note: Please indicate that you are using the MAX2361/ MAX2363W when contacting these component suppliers. Quick Start The MAX2361/MAX2363W EV kits are fully assembled and factory tested. Follow the instructions in the Connections and Setup section. Test Equipment Required This section lists the recommended test equipment to verify the operation of the MAX2361/MAX2363/ MAX2365. It is intended as a guide only, and substitutions may be possible. • One TCXO (Temperature-Components Crystal Oscillator) at 19.68MHz for the PLL reference frequency • An RF spectrum analyzer with optional digital modulation personality (Rohde & Schwarz FSEA30 or equivalent) • A power supply that can provide 250mA at +3.3V • A power supply that can provide 50mA at +5V • An additional voltage source for control of VGA functions • I/Q arbitrary waveform generator or CDMA generator Win95®/98®, Win2000®, WinNT® are registered trademarks of Microsoft Corp. 6 (Agilent E4433B or equivalent) • PC (486DX33 or better) with Win95®/98®, Win2000®, WinNT® 4.0 or later operating system and an available parallel port • INTF2300 interface board (supplied with EV kit) Connections and Setup This section provides step-by-step instructions for getting the EV kit up and running in cellular and PCS CDMA modes. Cellular CDMA Mode Perform the following steps to evaluate the MAX2361 in the cellular CDMA mode: 1) Verify shunts JU1, JU2, and JU6–JU10 are in place. 2) Connect the INTF2300 interface cable as shown in Figure 8. Note: 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 +3.0V power supply to VBAT. The INTF2300 board derives its power from the MAX2361 EV kit. 4) Connect a +5.0V power supply to the header labeled “+5V”. 5) Connect the TCXO to the REF port. 6) Connect a CDMA baseband signal generator to the I and Q ports using BNC connectors. Set the modulation to reverse-channel CDMA 7) Install and run Maxim CDMA control software. Software is also available on the web at www.maxim-ic.com. On the IC selection form, click on the MAX236X control button. Select P4. Click on register views. 8) With the MAX236X control screen active, set the registers according to Table 1. 9) Click on the Send Data button for each of the control registers located at the right of the screen. There are eight registers that need to be downloaded to the IC. The Lock indicator on the screen (and on the EV board) should be red, indicating lock. 10) Apply 2.4V to GC via JU4. 11) Connect RFL to the spectrum analyzer. Configure the spectrum analyzer to measure ACPR for reverse-channel CDMA. Set the center frequency to 836MHz with a +10dBm reference level. 12) The output power should be about +9dBm after accounting for cable and connector loss. The ACPR at ±885kHz offset should be -54dBc, and the ACPR at ±1.98MHz offset should be -65dBc. _______________________________________________________________________________________ MAX2361/MAX2363W Evaluation Kits Adjustments and Control 1) Remove shunt JU2 and place shunt in JU3. This removes VCC for the cellular VCO and applies VCC to the PCS VCO. 2) With the MAX236X control screen active, set the registers according to Table 1. 3) Click on the Send Data buttons for each of the control registers located at the right of the screen. There are eight registers that need to be downloaded to the IC. The lock indicator on the screen should be red, indicating lock. 4) Apply a 2.4V to VGC via JU4. Apply a voltage from 0.6V to 2.4V to header “VGC” to adjust the IF and RF VGA of the MAX2361/MAX2363/ MAX2365. The VGC voltage is filtered on the EV kit to minimize undesired amplitude modulation. 5) Connect the RFH0 port to the spectrum analyzer. Configure the spectrum analyzer to measure ACPR for reverse-channel CDMA. Set the center frequency to 1880.01MHz with a +10dBm reference level. The following section covers the EV kits’ circuit blocks in detail (refer to the MAX2361/MAX2363/MAX2365 data sheet for additional information). 6) The output power should be about +9dBm after accounting for cable and connector loss. The ACPR at ±1.25MHz offset should be -54dBc. The single-ended I/Q signals are converted to differential by operational amplifiers on the EV kit. The op amps also provide DC bias to the I/Q input pins of the MAX2361/MAX2363/MAX2365. The EV kits are set up to provide 415mVp-p differential to the IC when used with a 50Ω source that delivers 1Vp-p into 50Ω. For other I/Q levels, replace R9 and R18 with appropriate resistor values according to Table 2. Wide-Band CDMA Mode Perform the following steps to evaluate the MAX2363 in the wideband CDMA mode: 1) Remove shunt JU2 and place shunt in JU3. This removes VCC for the cellular VCO and applies VCC to the WCDMA VCO. 2) Connect a TCXO at 15.36MHz to REF port. VGA Adjust Interface Control The interface port is designed to use a 20-pin ribbon cable (Figure 1); 10 pins are signal lines, and the other 10 pins are digital grounds. Pin 1 of the interface cable is red. Pin 1 is also designated in silk screen on each of the PC boards. Detailed Description I/Q Inputs Table 1. Register Settings CELLULAR CDMA UPPER-HALF BAND PCS CDMA WCDMA RFM (dec) 38214 58321 29125 RFR (dec) 656 656 192 IFM (dec) 6519 6519 4750 3) Set the modulation of the baseboard signal generator to 3GPP WCDMA reverse link. 4) With the MAX236X control screen active, set the registers according to Table 1. 5) Click on the Send Data buttons for each of the control registers located at the right of the screen. There are eight registers that need to be downloaded to the IC. The Lock indicator on the screen should be red, indicating lock. 6) Apply a 2.4V to VGC via JU4. 7) Connect the RFH0 port to the spectrum analyzer. Configure the spectrum analyzer to measure ACPR for reverse-channel WCDMA. Set the center frequency to 1950MHz with a +10dBm reference level. 8) The output power should be about +9dBm after accounting for cable and connector loss. The ACPR at ±5MHz offset should be -44dBc. IFR (dec) 492 492 96 OPCTRL (hex) 090F 992F 9F0F CONFIG (hex) C03F C03F D03F ICCCTRL (hex) 0C38 2C38 2C38 100 100 100 TEST (hex) Programming Interface The programming interface is provided by the INTF2300 interface board. The interface board buffers and level shifts logic levels from the PC to the MAX2361/MAX2363W EV kits (refer to the INTF2300 documentation). These logic signals control the logic pins as well as the serial interface. _______________________________________________________________________________________ 7 Evaluate: MAX2361/MAX2363/MAX2365 Upper Half-Band PCS CDMA Mode Perform the following steps to evaluate the MAX2361 in the PCS CDMA mode: Evaluate: MAX2361/MAX2363/MAX2365 MAX2361/MAX2363W Evaluation Kits Table 2. Baseband Termination Resistor Values I/Q DIFFERENTIAL VOLTAGE AT I_/Q_ INPUTS (mVp-p) R9, R18 (Ω)* Sinusoidal 600 75 39 MODULATION CDMAONE 415 3GPP WCDMA 600 24 TDMA 600 22 RFH0 RFH0 is the PCS upper half-band PA driver output. Refer to Table 9 in the MAX2361/MAX2363/MAX2365 data sheet for the mode description. IFINH and IFOUTH For cascade evaluation, an on-board filter is connected between IFOUTH and IFINH. Select these ports by programming IF_SEL to 1. IFINH and IFOUTH are not connected to SMA connectors on the EV kit IFINL and IFOUTL *Set R9 and R18 for different I/Q input-source level (baseband waveform taken from the back panel of Agilent’s E4433B signal generator). IFLO The IFLO output port provides an output signal that is either the IF VCO frequency or the VCO frequency divided by 2, depending on the setting of the BUF_DIV control bit. It can be enabled by setting the BUF_EN bit to 1 in the OPCTRL register. TANK BYP The tank bypass port is provided to drive the high-band tank with an external LO source. The VCO_BYPASS bit should be set to 1 to enable this port. Replace C25 with 0.01µF AC-coupling capacitor; replace R36 and R70 with 0Ω resistors; and remove R38, C12, C24, L10, D1, and D2. REF REF is the reference frequency input to the RF and IF PLL. The REF port is AC-coupled. Make sure the reference signal has low phase noise. LOH LOH is the high-band RF LO input port. The EV kit is shipped with this port disconnected. To use this port with an external signal source, disconnect the PCS VCO by removing C39 and placing it at location C66. LOL LOL is the low-band RF LO input port. The EV kit is shipped with this port disconnected. To use this port with an external signal source, disconnect the cellular VCO by removing C40 and placing it at location C65. RFH1 For cascade evaluation, an on-board filter is connected between IFOUTL and IFINL. Select these ports by programming IF_SEL to 0. For individual IF modulator and upconverter evaluation, remove R44, R49, R55, R58, and install R25, R33, R34, and R39 with 0Ω resistors. This connects the IFINL_ and IFOUTL_ pins to the IFINL and IFOUTL SMA connectors. The matching networks are tuned to 130MHz. VBAT/VREG VBAT supplies VCC to the PA driver circuitry. This may be an unregulated battery voltage. The PA drivers are open collector. Jumpers are provided to enable current measurement to each functional block of the IC (Table 3). VREG is connected to the output of the U2 regulator on the EV Kit. Do not connect an external supply voltage to VREG header. RBIAS When resistor R73 is stuffed (typically 10kΩ), a bias voltage may be applied to the RBIAS header to adjust the PA driver bias current. Internal to the IC, pin 12 is set to 600mV. Output linearity or efficiency may be improved by adjusting PA driver current. Layout Considerations The MAX2361/MAX2363W EV kits can serve as guides for your board layout. Keep PC board trace lengths as Table 3. Jumpers JUMPER NO. ASSOCIATED FUNCTIONAL BLOCK JU1 VCC for VCC DRIVER JU2 External cellular VCO RFH1 is the PCS lower half-band PA driver output. Refer to Table 9 in the MAX2361/MAX2363/MAX2365 data sheet for the mode description. JU3 External PCS VCO JU4 VGC jumper JU6 PA predrivers VCC RFL JU7 RF mixer VCC RFL is the cellular band PA driver output. This port is active in cellular and FM modes. Refer to Table 9 in the MAX2361/MAX2363/MAX2365 data sheet for the mode description. JU8 IF modulator VCC JU9 Digital VCC JU10 RF charge pump VCC 8 _______________________________________________________________________________________ MAX2361/MAX2363W Evaluation Kits PC Board Construction The MAX2361/MAX2363W EV kit PC board uses a 14milwide trace for 50Ω transmission line. The PC board has an 8mil-layer profile on FR4 with a dielectric constant of 4.5. GND VCC JU1 DB25M 1 2 INTF2300 SPI Interface Board The INTF2300 interface board is used to interface 3-wire SPI protocol from a PC’s parallel port to the EV kit. This board will level translate 5V logic from the PC to VCC of the EV kit (typically this will be 3.3V logic). The INTF2300 also provides buffering and EMI filtering. Its absolute maximum supply voltage is 4.6V, limited by the breakdown of the buffer IC. The recommended operating supply voltage range is +2.7V to +3.6V. 3 1 1 TO PC PARALLEL PORT 20 6 10 INTF2300 MAX2361EVKIT/ MAX2363WEVKIT 10 VBAT 20 6 GND 1 1 Figure 1. INTF2300 with MAX2361/MAX2363W EV Kit Providing Filtered Supply _______________________________________________________________________________________ 9 Evaluate: MAX2361/MAX2363/MAX2365 short as possible to minimize parasitics. Also, keep decoupling capacitors as close to the IC as possible with a direct connection to the ground plane. Evaluate: MAX2361/MAX2363/MAX2365 MAX2361/MAX2363W Evaluation Kits Figure 2. MAX2361/MAX2363W EV Kit Schematic 10 ______________________________________________________________________________________ MAX2361/MAX2363W Evaluation Kits Evaluate: MAX2361/MAX2363/MAX2365 Figure 2. MAX2361/MAX2363W EV Kit Schematic (continued) ______________________________________________________________________________________ 11 Evaluate: MAX2361/MAX2363/MAX2365 MAX2361/MAX2363W Evaluation Kits 1.0" Figure 3. MAX2361/MAX2363W EV Kit Component Placement Guide—Component Side (Top View) 1.0" Figure 5. MAX2361/MAX2363W EV Kit PC Board Layout— Component Side (Top View) 12 1.0" Figure 4. MAX2361/MAX2363W EV Kit Component Placement Guide—Solder Side (Bottom View) 1.0" Figure 6. MAX2361/MAX2363W EV Kit PC Board Layout— Ground Plane (Top View) ______________________________________________________________________________________ MAX2361/MAX2363W Evaluation Kits 1.0" Figure 7. MAX2361/MAX2363W EV Kit PC Board Layout—Inner Layer (Top View) Figure 8. MAX2361/MAX2363W EV Kit PC Board Layout— Solder Side (Bottom View) 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 ____________________ 13 © 2001 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products. Evaluate: MAX2361/MAX2363/MAX2365 1.0"