DEMO MANUAL DC2609A LTC6952 Ultralow Jitter, 4.5GHz PLL with 11 Outputs and JESD204B Support DESCRIPTION Demonstration circuit 2609A features the LTC6952, an Ultralow Jitter, 4.5GHz PLL with 11 Outputs and JESD204B Support. By default, the DC2609A is powered from two supplies. The 9V-12V supply input powers the onboard reference and VCO circuitry, along with the LTC6952 5V supply pin. The 4V-6V supply input powers the LTC6952 3.3V supply pins. A reduced power option is provided that allows the LTC6952's output supply pins to connect to an LTC Silent Switcher(R) and the LTC6952 input supply pins to connect to a low noise LDO. All differential inputs and six of the differential outputs are populated with 0.5" spaced SMA connectors. These outputs are AC-coupled with 50 transmission lines making them suitable to drive 50 impedance instruments. The remaining five differential outputs are terminated with 100. The LTC6952's EZSyncTM and SYSREF request functions are made available via the LTC6952 SPI interface or the EZS_SRQ SMA/turret connectors. The DC2609A, DC2610A, and DC2611A SMA placement was designed for ease of connection for all multi-part synchronization and SYSREF request modes. The VTUNE and VCO SMAs can mate directly with the DC2664A VCO rider board. This options allows for a quick method to evaluate multiple VCOs. A DC2026 USB serial controller board is used for SPI communication with the LTC6952, controlled by the supplied LTC6952WizardTM software. DC2609 Design files are available. All registered trademarks and trademarks are the property of their respective owners. RIBBON CABLE CONNECTION TO DC590 OR DC2026 9-12V SUPPLY, BANANA JACK J30 ONBOARD REFERENCE (BOTTOM SIDE) 4-6V SUPPLY, BANANA JACK J32 ONBOARD VCO & SUPPORT CIRCUITRY POWER SUPPLY SUPPORT CIRCUITRY (TOP & BOTTOM SIDE) STAT LED, D1 OUT9, CML AC-COUPLED OUTPUTS, SMA OUT8, CML AC-COUPLED OUTPUTS, SMA LTC6952 DEMO CIRCUIT 2609A OUT0, CML AC-COUPLED OUTPUTS, SMA OUT1, CML AC-COUPLED OUTPUTS, SMA OUT4, CML AC-COUPLED OUTPUTS, SMA OUT5, CML AC-COUPLED OUTPUTS, SMA Figure 1. DC2609A Connections Rev 0 1 DEMO MANUAL DC2609A QUICK START PROCEDURE The DC2609A is easy to set up to evaluate the performance of the LTC6952. Follow the procedure below. The LTC6952Wizard and the DC2026 are required to control the DC2609A through a personal computer (PC). DC2026 CONFIGURATION Refer to Figure 2. Set the JP3 jumper to the 3.3V (preferred) or 5V position. Connect the DC2026 to one of your computer's USB ports with the included USB cable. The DC2026 has the ability to run Linduino code, refer to Design Center and the Frequently Asked Question section (Question #2) for more details. LTC6952WIZARD INSTALLATION The LTC6952Wizard software is used to communicate with the LTC6952. It uses the DC2026 to translate between USB and SPI-compatible serial communications formats. It also includes advanced design and simulation capabilities. The following are the LTC6952Wizard system requirements: * Windows Operating System: Windows XP, Windows 2003 Server, Windows Vista, Windows 7 * Microsoft.NET 3.5 SP1 or later * Windows Installer 3.1 or later * Linear Technology's DC2026 (with the DC590B emulator sketch loaded) The DC2026 arrives from the factory with the DC590B Emulator sketch loaded. If this is not the case refer to the Troubleshooting section. J5, USB CONNECTION TO PC JP3, SELECT 3.3V OPTION J1, RIBBON CABLE CONNECTION TO DC2609A Figure 2. DC2026 Connector Location Rev 0 2 DEMO MANUAL DC2609A QUICK START PROCEDURE Download the LTC6952Wizard setup file. 3. Run the LTC6952Wizard application. Run the LTC6952Wizard setup file and follow the instructions given on the screen. The setup file will verify and/ or install Microsoft.NET and install the LTC6952Wizard. Refer to the LTC6952Wizard Help menu for software operation. 4. In LTC6952Wizard, click File Load Settings and select file "LTC6952 EZSync StandAlone.6952set". The DC2609A's red STAT LED (D1) should illuminate. DC2609A CONFIGURATION 1. Connect J30, J32 and J33 to the appropriate power supplies and apply power (see Figure 1 and the Typical DC2609A Requirements and Characteristics table). 2. Connect the DC2026 to the DC2609A with the provided ribbon cable. 5. Synchronize outputs by toggling the LTC6952 SSYNC bit on then off from the LTC6952Wizard. 6. Connect desired output (OUT9, OUT8, OUT5, OUT4, OUT1 or OUT0) to a test instrument or other demo board to evaluate performance. Be sure to power down or terminate any unused RF output with 50, or poor spurious performance may result. Figure 3. LTC6952Wizard Screenshot Rev 0 3 DEMO MANUAL DC2609A TROUBLESHOOTING If the green LEDs (D2, D3, or D4) do not illuminate: 1. Ensure the DC2026 is connected to PC 1. Verify J30 measures between 9V and 12V (see the Typical DC2609A Requirements and Characteristics table) 2. Disconnect and Reconnect DC2026 to PC 2. Verify the JP3 and JP5 jumpers are installed correctly (refer to the DC2609A schematic sheet 3) 3. Verify the output voltages at pin 10 of U7, U8, and U11 are correct a. U7 = 3.3V b. U8 = 8V c. U11 = 5V If the green LED (D5) does not illuminate: 1. Verify J32 measures between 4V and 6V (see the Typical DC2609A Requirements and Characteristics) 2. Verify JP4, JP6, and JP7 jumpers are installed correctly (refer to the DC2609A schematic sheet 3) 3. Verify the voltages at jumper JP6 and JP7 are correct a. JP6 = 3.3V b. JP7 = 3.3V If the red LED (D1) does not illuminate: 1. In LTC6952Wizard's System tab click "Read All". LTC6952Wizard should match Figure 3. If not, see "Verify DC2609A and LTC6952Wizard Communication" Verify DC2609A and LTC6952Wizard Communication: To verify communication with the DC2609A. The bottom status line in LTC6952Wizard should read "LTC6952" and "Comm Enabled" as shown in Figure 3. If not, then perform the following steps: 3. Ensure DC2026 is connected to DC2609A 4. Close LTC6952Wizard and restart 5. Verify the DC2026 has the DC590B Emulator sketch loaded by contacting the factory or following these steps. a. Download QuikEvalTM b. Run QuikEval (Linduino connected to the PC) If QuikEval does not find a DC590B, reload the DC590 Linduino sketch. To use the LTSketchbook refer to theLinduino Design Center for instructions on how to start using Linduino. If DC2609A performance is less than the LTC6952 data sheet specifications: 1. For unexpected spurious response, verify power supplies are low noise and spurious free power supplies. Power supplies that are based off a switching regulator architecture are known to generate spurs on low jitter clock outputs. 2. For poor phase noise results, verify the phase noise specifications of the input signal and the phase noise measurement instrument. Traditional signal sources and spectrum analyzers have higher phase noise than the LTC6952 and will degrade measurement results. To measure phase noise performance it is recommended to use a low jitter oscillator and a signal source analyzer, such as Keysight's (previously Agilent/HP) E5052. 3. Contact the factory for further troubleshooting. Rev 0 4 DEMO MANUAL DC2609A DC2609A RECONFIGURATION The following covers the hardware reconfiguration of the DC2609A. Refer to LTC6952Wizard and the LTC6952 data sheet to better understand how to change programmed parameters on the DC2609A. LTC6952 3.3V POWER SUPPLY OPTIONS Table 1 provides the 3.3V power supply options for DC2609A. By default the DC2609A is setup to use the LDO only supply option. An alternative jumper selectable supply option is provided that uses an LDO and Silent Switcher supply. The LDO + Silent Switcher option powers the higher current LTC6952 output supply pins from an LTC Silent Switcher, such as the LT8609S. The LTC Silent Switcher improves the power efficiency over the low noise LDO. A low noise LDO is required on the LTC6952's VVCO+ and VREF+ supply pins for acceptable in-band performance. Table 1. Power Supply Options Jumper Settings Default Option JP4 JP6 JP7 X LDO Only 2-3 1-2 2-3 LDO + Silent Switcher 1-2 1-2 1-2 VCO SMA: INPUT TERMINATION OPTIONS Table 2 provides the single-ended and differential SMA input termination options. By default the DC2609A is setup for onboard VCO input and does not use the J28 and J29 SMAs. Table 2. VCO SMA Input Termination Options (*) SMA Inputs Termination R18 R22 R20 R21 C14 F C16 F J28 SE, IN- 75 30 DNI DNI 0.1 DNI J29 SE, IN+ 30 75 DNI DNI DNI 0.1 J28 & J29 DIFF, CML or PECL DNI DNI 160 DNI 0.1 0.1 DIFF, LVDS DNI DNI DNI 160 0.1 0.1 LTC6952 6952SET FILES The LTC6952Wizard provides a 6952set file for all LTC6952 data sheet application examples and typical application circuits. After loading a 6952 set file a pop-up window will detail any user actions and board modifications required for the selected file. SYNC OPTIONS The LTC6952 data sheet describes several synchronization modes. After selecting the desired synchronization mode, refer to Table 3 to identify the required DC2609A board modifications. Refer to the LTC6952 data sheet for SYNC timing and level requirements. CML OUTPUTS, OUT[10:0] The DC2609A has 11 CML outputs. OUT[9:0] have matching trace lengths, which are optimized for skew measurements. OUT10's trace lengths are longer than the other outputs traces due to the shape of the DC2609A. Six of these outputs are AC-coupled and brought out to SMAs (OUT9, OUT8, OUT5, OUT4, OUT1, and OUT0). To drive 50 impedance instruments connect OUTx+ to the instrument and OUTx- to a 50 termination, or vice versa. The remaining five outputs (OUT10, OUT7, OUT6, OUT3, and OUT2) are terminated with a 100 resistor onboard. To connect these outputs to a 50 instrument, remove the 100 termination, and install the appropriate SMAs and AC blocking capacitors. Refer to LTC6952 data sheet for differential termination options. * SE = Single-Ended, DIFF = Differential, DNI = Do Not Install Rev 0 5 DEMO MANUAL DC2609A DC2609A RECONFIGURATION Table 3. LTC6952 Sync Mode Programming Options Board Modifications (DNI = Do Not Install) SYNC/SYSREF Method EZS_SRQ Pins State R53 () R7 () R5 () R50 () R10 () R3 () R8 () EZS_SRQ Pin Differential, CML or LVPECL DNI DNI 100 0 0 DNI DNI Differential LVDS 100 100 750 50 50 130 130 EZS_SRQ+: CMOS 200k 0 DNI 0 0 DNI DNI 200k 0 DNI 0 0 DNI DNI EZS_SRQ-: GND SSRQ Register Bit EZS_SRQ+: GND EZS_SRQ-: GND FREQUENTLY ASKED QUESTIONS 1. Can the LTC6952Wizard control a LTC6952 on a board other than the DC2609A? Yes, follow these steps. Step 1: Configure the DC2026 for 3.3V SPI as shown in Figure 2 Step 2: Connect the DC2026 J1 connector SPI pins to the LTC6952 SPI pins. Refer to page two of the DC2609A schematic for pin assignments. 2. Does the LTC6952 have Linduino Code available? Yes, download the LTC6953 sketch in the LTSketchbook. To use the LTSketchbook and for instructions on how to start using Linduino refer to the Linduino Design Center. This will give programmers a head start in writing code for the LTC6952. It is recommended to use the LTC6952Wizard to create the best possible register settings for all conditions. These LTC6952 register settings from LTC6952Wizard can be programmed in a lookup table. Rev 0 6 DEMO MANUAL DC2609A TYPICAL DC2609A REQUIREMENTS AND CHARACTERISTICS PARAMETER INPUT OR OUTPUT PHYSICAL LOCATION DETAILS 9V-12V Power Supply Input J30 Banana Jack Powers the onboard 8V VCO, the onboard 3.3V reference and the LTC6952 5V VCP+ supply pins. Power down onboard reference (U2) by setting jumper JP2 to position 2-3. Power down onboard VCO (U9) by setting jumper JP3 to position 2-3. 4V-6V Power Supply Input J32 Banana Jack Powers the LTC6952 3.3V supply pins (VOUT+, VREF+, VVCO+, and VD+). Option available to power supplies from single LDO, or an LDO and an LTC Silent Switcher. Refer to Table 1. GND Output J33 Banana Jack Pair with J30 and J32 OUT9+; OUT9- J3 and J4 SMA Connectors* CML, AC-Coupled, 800mVpk Differential OUT8+; OUT8- J5 and J6 SMA Connectors* OUT5+; OUT5- J19 and J20 SMA Connectors* OUT4+; OUT4- J17 and J18 SMA Connectors* OUT1+; OUT1- J11 and J12 SMA Connectors* OUT0+; OUT0- OUT10+; OUT10- OUT7+; OUT7- J9 and J10 SMA Connectors* Two Outputs (Not Connected) J1 and J2 (SMA Not Populated) J7 and J8 (SMA Not Populated) OUT6+; OUT6- J21 and J22 (SMA Not Populated) OUT3+; OUT3- J15 and J16 (SMA Not Populated) OUT2+; OUT2- Onboard Differential 100 termination J13 and J14 (SMA Not Populated) VCO+; VCO- Input (Not connected) J28 and J29 SMA Connector Default: Not Connected (see Table 2, for correct input termination options) REF+;REF- Input (Not connected) J24 and J25 SMA Connector Default: Not Connected EZS_SRQ+ Input J27 SMA Connector/E1 Turret Default: Preferred Single-Ended Input EZS_SRQ- Input J26 SMA Connector/E3 Turret Default: Shorted to GND ISD Input Test Point 3.3V(Default): Device Active, set by pull-up resistor GND: Shut Down Device STAT Output JP1 Jumper Red LED D1 illuminates when STAT pin in high state *Any unused RF output must be powered down or terminated with 50, or poor spurious performance may result. ASSEMBLY OPTIONS Table 5. DC2609A Options Assembly Version Part Number DC2609A-A LTC6952IUKG Rev 0 7 DEMO MANUAL DC2609A PARTS LIST ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER Required Circuit Components 1 0 CI1_A, C3, CP_A (OPT) CAP., OPTION, 0603 OPT 2 1 CI1_P CAP., 0.68F, X7R, 16V, 10%, 0603, AECQ200 SAMSUNG, CL10B684KO8VPNC 3 0 CI2_A (OPT) CAP., OPTION, 1206 OPT 4 1 CI2_P CAP., 1F, X7R, 25V, 10%, 1206, AEC-Q200 SAMSUNG, CL31B105KAPWPNE 5 1 CP_P CAP., 0.033F, X7R, 50V, 10%, 0603 MURATA, GRM188R71H333KA61D 6 18 C1, C4, C6, C9, C50, C51, C52, C53, C54, C55, C56, C57, C58, C59, C60, C61, C110, C112 CAP., 1F, X5R, 16V, 10%, 0402 MURATA, GRM155R61C105KE01D 7 1 C2 CAP., 0.022F, X7R, 50V, 10%, 0603 MURATA, GRM188R71H223KA01D 8 25 C5, C11, C17, C18, C19, C20, C21, C22, C23, C24, C26, C29, C30, C31, C32, C63, C64, C65, C66, C67, C81, C88, C89, C101, C111 CAP., 0.1F, X7R, 10V, 10%, 0402 MURATA, GRM155R71A104KA01D 0402ZC104KAT2A 9 1 C7 CAP., 0.01F, X7R, 16V, 10%, 0402 AVX, 0402YC103KAT2A 10 0 C8, C12, C14, C15, C16, C25, C27, C28, C33, C34, C35, C36, C37, C82, C83, C84, C85 CAP., OPTION, 0402 OPT 11 14 C10, C38, C39, C40, C41, C42, C43, C44, C45, C46, C47, C48, C49, C62 CAP., 0.01F, X7R, 6.3V, 10%, 0201 MURATA, GRM033R70J103KA01D AVX, 12 1 C13 CAP., 10pF, C0G, 50V, 10%, 0402 AVX, 04025A100KAT2A 13 3 C68, C91, C106 CAP., 22F, ALUM., 63V, 20%, SMD 6.3 x 7.7mm, CE-BS Series SUN ELECTRONIC INDUSTRIES CORPORATION, 63CE22BS 14 4 C69, C74, C92, C97 CAP., 10F, ALUM., 63V, 20%, SMD 6.3 x 5.4mm, CE-BS Series SUN ELECTRONIC INDUSTRIES CORPORATION, 63CE10BS 15 13 C70, C72, C73, C75, C77, C78, C93, C95, C96, C98, C104, C105, C107 CAP., 4.7F, X7R, 50V, 10% 1206 MURATA, GRM31CR71H475KA12L AVX, 12065C475KAT2A NIC, NMC1206X7R475K50TRPLPF 16 6 C71, C76, C79, C86, C94, C103 CAP., 0.1F, X7R, 16V, 10%, 0603 MURATA, GRM188R71C104KA01D CC0603KRX7R7BB104 17 3 C80, C87, C90 CAP., 47F, TANT, 35V, 10%, 7361 AVX, TAJV476K035RNJ 18 1 C99 CAP., 330F, TANT, 10V, 10%, 7343 AVX, TPME337K010R0035 19 1 C100 CAP., 10F, X7R, 25V, 10%, 1206 MURATA, GRM31CR71E106KA12L 20 1 C102 CAP., 1F, X7R, 50V, 10%, 0805 TDK, C2012X7R1H105K125AB 21 1 C108 CAP., 47F, X5R, 25V, 20%, 1206 TDK, C3216X5R1E476M160AC 22 1 C109 CAP., 4.7F, X7R, 16V, 10%, 0805 MURATA, GRM21BR71C475KA73L 0805YC475KAT2A 23 1 D1 LED, RED, CLEAR, 3020 (1208) ROHM, SML-012V8TT86 24 5 D2, D3, D4, D5, D6 LED, GREEN, CLEAR, 3020 (1208) ROHM, SML-012P8TT86 25 15 E1, E2, E3, E4, E5, E6, E7, E8, E9, TEST POINT, TURRET, 0.064", MTG. HOLE E10, E11, E12, E13, E14, E15 MILL-MAX, 2308-2-00-80-00-00-07-0 26 3 FB1, FB2, FB3 TAIYO YUDEN, FBMH1608HL331-T IND., 330 at 100MHz, FERRITE BEAD, 25%, 0.8A, 0.21, 0603 YAGEO, AXV, Rev 0 8 DEMO MANUAL DC2609A PARTS LIST ITEM QTY 27 2 REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER FB4, FB5 IND., 220 at 100MHz, FERRITE BEAD, 3A, TDK, MPZ2012S221AT000 0.04, 0805 28 7 JP1, JP2, JP3, JP4, JP5, JP6, JP7 CONN., HDR, MALE, 1 x 3, 2mm, THT, STR Wurth Elektronik, 62000311121 29 0 J1, J2, J7, J8, J13, J14, J15, J16, CONN., SMA, JACK, RCPT, END LAUNCH, J21, J22 (OPT) STR, 50 OPT 30 19 J3, J4, J5, J6, J9, J10, J11, J12, CONN., SMA, JACK, RCPT, END LAUNCH, J17, J18, J19, J20, J24, J25, J26, STR, 50 J27, J28, J29, J31 CINCH CONNECTIVITY SOLUTIONS, 142-0701-851 31 1 J23 CONN., HDR., MALE, 2 x 7, 2mm, THT, VERT, SHROUDED MOLEX, 87831-1420 32 3 J30, J32, J33 CONN., BANANA JACK, FEMALE, THT, NON-INSULATED, SWAGE, 0.218" KEYSTONE, 575-4 33 1 L1 IND., 0, 1/8W, 0805 VISHAY, CRCW08050000Z0EA YAGEO, RC0805JR070RL 34 1 L2 IND., 2.2H, PWR, 20%, 8A, 23.5m, 4.3mm x 4.3mm, AEC-Q200 "COILCRAFT, XFL4020-222MEB 35 2 R1, RZ_P RES., 48.7, 1%, 1/10W, 0603, AEC-Q200 VISHAY, CRCW060348R7FKEA 36 4 R2, R39, R51, R52 RES., 0, 1/10W, 0603 VISHAY, CRCW06030000Z0EA NIC, NRC06ZOTRF 37 0 R3, R8, R11, R13, R14, R15, R17, RES., OPTION, 0402 R20, R35, R64, R69 (OPT) OPT 38 2 R4, R73 RES., 49.9, 1%, 1/16W, 0402 VISHAY, CRCW040249R9FKED NIC, NRC04F49R9TRF 39 0 R5, R6, R21 (OPT) RES., 100, 1%, 1/16W, 0402 OPT 40 8 R7, R9, R10, R42, R50, R54, R63, RES., 0, 1/16W, 0402 R70 COILCRAFT, XFL4020-222MEC" VISHAY, CRCW04020000Z0ED NIC, NRC04ZOTRF YAGEO, RC0402JR-070RL 41 1 R12 RES., 330, 1%, 1/16W, 0402, AEC-Q200 VISHAY, CRCW0402330RFKED 42 11 R16, R19, R23, R24, R25, R26, R29, R30, R33, R34, R40 RES., 100, 1%, 1/16W, 0402 VISHAY, CRCW0402100RFKED KOA SPEER, RK73H1ETTP1000F PANASONIC, ERJ2RKF1000X ROHM, MCR01MZPF1000 43 1 R18 RES., 75, 1%, 1/16W, 0402, AEC-Q200 VISHAY, CRCW040275R0FKED 44 1 R22 RES., 30, 1%, 1/16W, 0402, AEC-Q200 VISHAY, CRCW040230R0FKED 45 6 R27, R28, R31, R32, R41, R53 RES., 200k, 1%, 1/16W, 0402 VISHAY, CRCW0402200KFKED PANASONIC, ERJ2RKF2003X YAGEO, RC0402FR-07200KL 46 5 R36, R37, R38, R57, R58 RES., 4.99k, 1%, 1/16W, 0402 VISHAY, CRCW04024K99FKED NIC, NRC04F4991TRF YAGEO, RC0402FR-074K99L 47 4 R43, R62, R65, R75 RES., 619, 1%, 1/16W, 0402, AEC-Q200 VISHAY, CRCW0402619RFKED 48 1 R44 RES., 33.2k, 1%, 1/4W, 0805, AEC-Q200 VISHAY, CRCW080533K2FKEA 49 1 R45 RES., 1.21k, 1%, 1/16W, 0402 VISHAY, CRCW04021K21FKED KOA SPEER, RK73H1ETTP1211F ROHM, MCR01MZPF1211 50 1 R46 RES., 80.6k, 1%, 1/4W, 0805, AEC-Q200 VISHAY, CRCW080580K6FKEA 51 0 R47, R48, R49, R55, R56, RZ_A (OPT) RES., OPTION, 0603 OPT 52 2 R59, R61 RES., 49.9k, 1%, 1/8W, 0805, AEC-Q200 VISHAY, CRCW080549K9FKEA PANASONIC, ERJ6ENF4992V 53 1 R60 RES., 698k, 1%, 1/8W, 0805, AEC-Q200 VISHAY, CRCW0805698KFKEA 54 2 R66, R67 RES., 0, 3/4W, 2010, AEC-Q200 VISHAY, CRCW20100000Z0EF 55 2 R68, R74 RES., 1M, 1%, 1/10W, 0603 VISHAY, CRCW06031M00FKEA NIC, NRC06F1004TRF PANASONIC, ERJ3EKF1004V Rev 0 9 DEMO MANUAL DC2609A PARTS LIST ITEM QTY 56 1 REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER R71 RES., 18.2k, 1%, 1/10W, 0603 VISHAY, CRCW060318K2FKEA MOUSER ELECT., 71-CRCW0603-18.2K-E3 57 1 R72 RES., 309k, 1%, 1/10W, 0603, AEC-Q200 VISHAY, CRCW0603309KFKEA 58 1 U1 IC., ULTRALOW JITTER PLL, QFN-52(UKG) 7x8 LINEAR TECH., LTC6952IUKG#PBF LINEAR TECH., LTC6952IUKG#TRPBF 59 1 U2 OSC., 100MHz, 15pF, 25ppm, 5 x 7.5mm SMD, 3.3V, HCMOS, CRYSTEK CORPORATION, CCHD-575-25-100.000 60 1 U3 IC., MEMORY, EEPROM, 2Kb (256 x 8), TSSOP-8, 400kHz MICROCHIP, 24LC025-I /ST 61 2 U4, U5 IC., TinyLogic UHS Dual Buffer, SC70-6 FAIRCHILD SEMI., NC7WZ17P6X 62 1 U6 IC., Dual Supply Receiver, SOT363-6 (SC-88), Single Bit, 3-State Outputs NXP SEMI., 74LVC1T45GW,125 63 3 U7, U8, U11 IC., PSRR RF LINEAR REGULATOR, DFN-10(DD) LINEAR TECH., LT3042EDD#PBF LINEAR TECH., LT3042EDD#TRPBF 64 1 U9 OSC. COAXIAL RESONATOR, 4000CRYSTEK, CVCO55CC-4000-4000 4000MHz, 10pF, 50, 0.50" SQ SMD, VCO, PS = 8V, MAX VTUNE = 4.7V 65 1 U10 IC., DUAL/QUAD LOW NOISE OP AMPS, SO8 LINEAR TECH., LT1678IS8#PBF LINEAR TECH., LT1678IS8#TRPBF 66 1 U12 IC., 3A, 3.3V, LDO REGULATOR, DDPAK5Q LINEAR TECH., LT1764A-3.3#PBF LINEAR TECH., LT1764A-3.3#TRPBF 67 1 U13 IC,Silent Switcher 2 Synchronous, LGA-16 (3 x 3) LINEAR TECH., LT8609SIV#PBF LINEAR TECH., LT8609SIV#TRPBF 68 7 JP1, JP2, JP3, JP6, JP6 PINS 1&2; JP4 AND JP7 PINS 2&3 CONN., SHUNT, FEMALE, 2 POS, 2mm Wurth Elektronik, 60800213421 69 4 MH1, MH2, MH3, MH4 STANDOFF, NYLON, SNAP-ON, 0.50" Wurth Elektronik, 702935000 SCHEMATIC DIAGRAM Note: The buffers shown on sheet 2 of 4 of the schematic are used to protect the LTC6952 when connected to the DC2026 before the LTC6952 is powered up. There is no need for such circuitry if the SPI bus is not active before powering up the LTC6952. The EEPROM is for identification and is not needed to program the LTC6952. Rev 0 10 A B C D R10 0 R5 100 OPT J8 SMA OUT7+ OPT R25 100 R19 100 PLACE ON TOP SIDE C35 OPT C25 OPT C23 0.1uF C21 0.1uF C19 0.1uF C17 0.1uF C15 OPT C12 OPT 3.3V SUPPLIES OPT J7 OPT SMA SMA OUT7- J6 SMA OUT8+ OUT8- SMA J5 J4 SMA OUT9+ OUT9- SMA J3 J2 SMA OUT10+ OUT10- J1 OPT STAT 1 LED 2 JP1 3 NC HD1X3-079 R8 OPT R3 3.3V OPT OUT7+ OUT7- OUT8+ OUT8- OUT9+ OUT9- OUT10+ OUT10- STAT D1 RED R12 330 C50 1uF 3.3V_2 C51 1uF C52 1uF 5 C53 1uF C54 1uF C55 1uF C56 1uF C57 1uF PLACE ON BOTTOM SIDE C58 1uF C59 1uF C60 1uF 4 C112 1uF C39 C41 C42 C46 C47 C48 C49 C38 C40 C45 C43 C44 0.01uF 0.01uF 0.01uF 0.01uF 0.01uF 0.01uF 0.01uF 0.01uF 0.01uF 0.01uF 0.01uF 0.01uF 0201 0201 0201 0201 0201 0201 0201 0201 0201 0201 0201 0201 3.3V_2 R7 0 R53 200k ALL INPUT AND OUTPUT CONNECTIONS ARE SAME LENGTH, 50 OHM CONTROLLED IMPEDANCE, USING 20 MIL TRACES, 20 MIL GAP. E3 J26 EZS_SRQ- SMA EZS_SRQ- SMA EZS_SRQ+ 1 2 R50 0 VOUT+ OUT7+ OUT7- VOUT+ OUT8+ OUT8- VOUT+ OUT9+ OUT9- VOUT+ OUT10+ OUT10- VD+ CS SMA SMA SMA 3 LTC6952 U1 SMA C30 0.1uF 3.3V_2 3.3V C4 1uF C1 1uF SMA C31 0.1uF 3.3V_2 VCP+ C5 0.1uF SD OUT2- OUT2+ VOUT+ OUT1- OUT1+ VOUT+ OUT0- OUT0+ VOUT+ NC VCO+ VCO- VVCO+ 3.3V_2 SMA C32 0.1uF R6 100 OPT SMA C33 OPT R24 100 27 28 29 30 31 32 33 34 35 36 37 38 39 40 C2 0.022uF 0603 R9 0 R4 49.9 SMA C34 OPT 3.3V_2 3.3V_2 3.3V_2 3.3V 0201 5V C61 1uF C62 0.01uF 0201 VCP+ GND GND GND GND GND E9 E8 E7 E6 E5 3 R16 100 C9 1uF R17 OPT R13 OPT 4 5 [2] [2] [2] C18 0.1uF R22 30 R20 OPT R18 75 OUT+ DESCRIPTION 1 C36 OPT C26 0.1uF C24 0.1uF C22 0.1uF R14 OPT OPT OPT EN-XO R21 100 OPT C20 0.1uF [2] 3 2 R11 OPT PRODUCTION R26 100 C37 OPT [2] C16 OPT C14 OPT C81 0.1uF EN GND OUT- C11 0.1uF VTUNE CCHD-575-25-100 U2 C7 0.01uF 2 REV VCC C6 1uF 6 VEXT_REF __ ECO J29 J14 J13 J12 J11 J10 THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. 2 SCALE = NONE CHRIS P. KIM T. APPROVALS DATE: N/A SIZE LTC6952IUKG DATE 07-13-17 1 DEMO CIRCUIT 2609A Thursday, July 13, 2017 IC NO. SHEET 1 OF 4 2 REV. ULTRALOW JITTER PLL WITH ELEVEN PROGRAMMABLE OUTPUTS AND JESD204B SUPPORT TITLE: SCHEMATIC 1630 McCarthy Blvd. Milpitas, CA 95035 Phone: (408)432-1900 www.linear.com Fax: (408)434-0507 LTC Confidential-For Customer Use Only NOTES: UNLESS OTHERWISE SPECIFIED SMA OUT2- OUT2+ SMA OUT1SMA OUT1+ SMA OUT0SMA OUT0+ SMA VCO+ SMA SMA VCO- RFOUT (3) VEXT_REF J9 REF+ SMA REF- SMA REF+ J24 E4 CHRIS P. APPROVED REF- J25 E2 J28 1 REVISION HISTORY 1. ALL RESISTORS AND CAPACITORS ARE 0402. [2]. REFER TO DEMO MANUAL. VCO+ VCO- R15 OPT C8 OPT C83 OPT C82 OPT 2 LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS; HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO PCB DES. VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APPLICATION. COMPONENT SUBSTITUTION AND PRINTED APP ENG. CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. CUSTOMER NOTICE OUT2- OUT2+ OUT1- OUT1+ OUT0- OUT0+ C10 0.01uF SD (2) CP (3) J19 J18 J17 J16 OPT J15 OPT J22 OPT J21 OPT J20 OUT6- OUT6+ OUT5- OUT5+ OUT4- OUT4+ OUT3- OUT3+ C29 0.1uF 3.3V_2 C28 OPT R23 100 14 13 12 11 10 9 8 7 6 5 4 3 2 1 50 C27 OPT 3.3V_2 3.3V_2 3.3V_2 3.3V_2 3.3V_2 CS VCP+ SUPPLY 3.3V - 5V (2) (2) SCLK (2) SDO (2) SDI 53 GND OUT6- 15 J27 OUT6+ 16 EZS_SRQ- STAT E1 51 SDI 52 SDO OUT617 OUT6+ 49 SCLK VOUT+ 48 EZS_SRQOUT5+ OUT5+ 19 OUT5- OUT5- 18 REF- EZS_SRQ+ 47 REF+ 45 REF- 46 EZS_SRQ+ 20 VOUT+ OUT4- 21 OUT4OUT4+ 22 EZS_SRQ+ 4 23 42 CP REF+ OUT4+ 44 VREF+ VOUT+ 43 CP OUT3- 41 VCP+ OUT3- 24 GND VOUT+ 26 OUT3+ OUT3+ 25 5 A B C D DEMO MANUAL DC2609A SCHEMATIC DIAGRAM Rev 0 11 A B C 5 EEVCC EESDA EESCL EEGND AUX 10 9 11 12 14 1 V+ 2 5V 6 CS 4 SCK/SCL 7 MOSI/SDA 5 MISO J23 R35 OPT SD WP CS SCLK R37 4.99k R38 4.99k 6 5 7 3 2 1 SDI SCL SDA WP A2 A1 A0 U3 24LC025-I /ST SDO R39 0 0603 C63 0.1uF 4 CS E10 R32 200k 3.3V 3 2 1 U4 3 THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. 2 5 5 4 DIR 2 SCALE = NONE CHRIS P. KIM T. APPROVALS GND VCC(A) VCC(B) U6 GND VCC 6 NC7WZ17P6X 74LVC1T45GW 2 3 1 U5 GND VCC 4 3 2 6 1 NC7WZ17P6X LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS; HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO PCB DES. VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APPLICATION. COMPONENT SUBSTITUTION AND PRINTED APP ENG. CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. R40 100 C66 0.1uF R31 200k R28 200k R27 200k 3.3V CUSTOMER NOTICE EEPROM FOR BOARD IDENTIFICATION EEGND R36 4.99k V+DIG 3 DC2026 (DC590) SPI INTERFACE ARRAY HD2X7-079-MOLEX 13 8 GND 3 GND GND 4 EEPROM 8 VCC GND 12 4 D 5 4 5 6 R42 0 R34 100 R33 100 (1) (1) (1) (1) LTC6952IUKG 1630 McCarthy Blvd. Milpitas, CA 95035 Phone: (408)432-1900 www.linear.com Fax: (408)434-0507 LTC Confidential-For Customer Use Only SDO (1) SD SDI SCLK CS 1 DEMO CIRCUIT 2609A Thursday, July 13, 2017 IC NO. SHEET 2 OF ULTRALOW JITTER PLL WITH ELEVEN PROGRAMMABLE OUTPUTS AND JESD204B SUPPORT DATE: N/A SIZE TITLE: SCHEMATIC R41 200k C67 0.1uF 3.3V C65 0.1uF 3.3V C64 0.1uF 3.3V R30 100 R29 100 1 4 2 REV. A B C D DEMO MANUAL DC2609A SCHEMATIC DIAGRAM Rev 0 A B C D J30 J32 E11 J33 E14 GND E15 BANANA JACK GND 4V - 6V BANANA JACK 4V - 6V 9V - 12V BANANA JACK 9V - 12V 5 4V-6V 9V-12V C102 1uF 50V 0805 SUNCON 63E22BS C68 22uF 63V FBMH1608HL FB3 330 OHMS FBMH1608HL FB2 330 OHMS FBMH1608HL + SUNCON 63E10BS C69 10uF 63V SUNCON 63E10BS C74 10uF 63V SUNCON 63E22BS C91 22uF 63V C75 4.7uF 50V 1206 JP3 HD1X3-079 VEXT_VCO 1 2 3 OFF ON SUNCON 63E10BS C92 10uF 63V C93 4.7uF 50V 1206 R67 0 2010 + SUNCON 63E10BS C97 10uF 63V C98 4.7uF 50V 1206 5V LTC6952 VCP+, 200mA LDO + JP2 HD1X3-079 VEXT_REF 1 ON 2 3 OFF C103 0.1uF 0603 C104 4.7uF 50V 1206 MPZ2012 FB5 220 OHMS C105 4.7uF 50V 1206 4 + SUNCON 63E22BS C106 22uF 63V GND SYNC C107 4.7uF 50V 1206 1 2 3 R70 0 R69 OPT C110 1uF JP4 HD1X3-079 EN GND LT8609 3.3V LTC6952 VOUT+ VDIG+ 2A SILENT SWITCHER + MPZ2012 FB4 220 OHMS C70 4.7uF 50V 1206 8V EXTVCO + 3.3V EXTREF 3.3V LTC6952 3A LDO OPTION + FB1 330 OHMS C111 0.1uF R68 1M 0603 C94 0.1uF 0603 C76 0.1uF 0603 C71 0.1uF 0603 3 1 2 5 4 3 2 1 5 4 3 2 1 5 4 3 2 1 1 15 2 16 11 SYNC RT TR/SS VCC PGFB SET GND OUTS OUT U12 11 EP PGFB SET GND OUTS OUT U13 LT8609SIV 6 7 8 9 7 13 12 5 6 C96 4.7uF 25V 1206 R72 309k 0603 THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. 2 5V KIM T. 1 2 3 SW LT8609 2-3 1-2 3.3V LDO ONLY LTC6952IUKG 1630 McCarthy Blvd. Milpitas, CA 95035 Phone: (408)432-1900 www.linear.com Fax: (408)434-0507 LTC Confidential-For Customer Use Only 1 DEMO CIRCUIT 2609A Thursday, July 13, 2017 IC NO. SHEET 3 OF ULTRALOW JITTER PLL WITH ELEVEN PROGRAMMABLE OUTPUTS AND JESD204B SUPPORT DATE: N/A SIZE JP7 1-2 1-2 JP6 3.3V SW & LDO (LOW POWER) LDO JP7 HD1X3-079 1 2 3 3.3V_SW D6 GREEN R75 619 3.3V_2 3.3V NC JP6 HD1X3-079 LDO 3.3V_LDO D5 GREEN R65 619 3.3V 1 POWER SUPPLIES R66 0 2010 TITLE: SCHEMATIC C109 4.7uF 16V 0805 C101 0.1uF CHRIS P. SCALE = NONE 5V NC JP5 HD1X3-079 1 2 3 APPROVALS C108 47uF 10V 1206 C100 10uF 1206 5V D4 GREEN R62 619 5V VCO D3 GREEN R45 1.21k VEXT_VCO REF D2 GREEN R43 619 VEXT_REF C99 330uF 10V 7343 2 LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS; HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO PCB DES. VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APPLICATION. COMPONENT SUBSTITUTION AND PRINTED APP ENG. CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. + R61 49.9k 0805 R60 698k 0805 R46 80.6k 0805 R44 33.2k 0805 0603 C13 10pF R74 1M R73 49.9 XFL4020 L2 2.2uH R59 49.9k 0805 C95 4.7uF 25V 1206 C78 4.7uF 25V 1206 C77 4.7uF 25V 1206 C73 4.7uF 25V 1206 C72 4.7uF 25V 1206 CUSTOMER NOTICE NC FB PG 5 4 10 6 7 8 9 10 6 7 8 9 10 SW SW SENSE OUT LT1764AEQ-3.3 ILIM PG SHDN EN 11 EP U11 EN/UV IN IN PGFB LT3042EDD ILIM PG EN/UV IN IN U8 11 EP SET GND OUTS OUT LT3042EDD ILIM PG U7 LT3042EDD EN/UV IN IN IN 9 10 VIN VIN R71 18.2k 0603 R64 OPT R63 0 3 1 2 1 2 1 2 4 GND 3 GND 6 GND GND GND GND EP GND GND GND GND 3 4 8 14 17 18 19 20 21 1 2 1 2 5 4 2 REV. A B C D DEMO MANUAL DC2609A SCHEMATIC DIAGRAM Rev 0 13 A B C D 5 (1) CP CP E12 SMA VTUNE J31 VTUNE 5V R57 4.99K C88 0.1uF 0805 L1 0 0603 R1 48.7 C89 + 0.1uF R47 OPT 0603 3 C90 47uF 35V 7361 4 R51 0 R58 4.99K R55 OPT 0603 0603 R48 OPT 0603 1206 2 3 0603 CI1_A OPT - + 1 U10A LT1678IS8 0603 CP_A OPT 0603 RZ_A OPT CI2_P 1uF 1206 CI1_P 0.68uF 0603 CI2_A OPT 0603 CP_P 0.033uF 0603 RZ_P 48.7 0603 R52 0 - + R2 0 C3 OPT 0603 C86 + 0.1uF 0603 C87 47uF 35V 7361 CUSTOMER NOTICE 7 LT1678IS8 U10B 0603 C80 47uF 35V 0603 C79 0.1uF E13 1 2 GND 3 V-TUNE 4 GND GND 7361 12 GND 11 GND 10 RFOUT 9 GND V+OA 3 THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. U9 2 2 SCALE = NONE CHRIS P. KIM T. APPROVALS C84 OPT R54 0 DATE: N/A SIZE C85 OPT LTC6952IUKG 1630 McCarthy Blvd. Milpitas, CA 95035 Phone: (408)432-1900 www.linear.com Fax: (408)434-0507 LTC Confidential-For Customer Use Only RFOUT (1) 1 1 DEMO CIRCUIT 2609A Thursday, July 13, 2017 IC NO. REV. SHEET 4 OF 4 2 ULTRALOW JITTER PLL WITH ELEVEN PROGRAMMABLE OUTPUTS AND JESD204B SUPPORT TITLE: SCHEMATIC CVCO55CC-4000-4000 VEXT_VCO LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS; HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO PCB DES. VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APPLICATION. COMPONENT SUBSTITUTION AND PRINTED APP ENG. CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. 6 5 R56 OPT 0603 R49 OPT 0603 ACTIVE LOOP FILTER 4 8 4 8 4 16 GND 15 GND 14 VCC 13 GND 14 + 5 6 GND 7 GND 8 GND GND 5 A B C D DEMO MANUAL DC2609A SCHEMATIC DIAGRAM Rev 0 DEMO MANUAL DC2609A LAYOUT TOP LAYER Rev 0 Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. 15 DEMO MANUAL DC2609A ESD Caution ESD (electrostatic discharge) sensitive device. Charged devices and circuit boards can discharge without detection. Although this product features patented or proprietary protection circuitry, damage may occur on devices subjected to high energy ESD. Therefore, proper ESD precautions should be taken to avoid performance degradation or loss of functionality. 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