Analog Devices LTC6952 Guía de configuración rápida

Rev 0

DEMO MANUAL DC2609A

DESCRIPTION

LTC6952

Ultralow Jitter, 4.5GHz PLL with 11 Outputs

and JESD204B Support

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

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 50Ω transmission lines making them

suitable to drive 50Ω impedance instruments. The remain-

ing five differential outputs are terminated with 100Ω.

All registered trademarks and trademarks are the property of their respective owners.

The LTC6952’s EZSync™and SYSREF request func-

tions 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 sup-

plied LTC6952Wizard™ software.

DC2609 Design files are available.

Figure 1. DC2609A Connections

RIBBON CABLE CONNECTION

TO DC590 OR DC2026

OUT1, CML

AC-COUPLED

OUTPUTS, SMA

OUT0, CML

AC-COUPLED

OUTPUTS, SMA

9-12V SUPPLY,

BANANA JACK J30

OUT9, CML

AC-COUPLED

OUTPUTS, SMA

OUT8, CML

AC-COUPLED

OUTPUTS, SMA

ONBOARD VCO &

SUPPORT CIRCUITRY

OUT5, CML

AC-COUPLED

OUTPUTS, SMA

OUT4, CML

AC-COUPLED

OUTPUTS, SMA

STAT LED, D1

4-6V SUPPLY,

BANANA JACK J32

ONBOARD REFERENCE

(BOTTOM SIDE)

POWER SUPPLY

SUPPORT CIRCUITRY

(TOP & BOTTOM SIDE)

LTC6952

DEMO CIRCUIT 2609A

Rev 0

DEMO MANUAL DC2609A

QUICK START PROCEDURE

The DC2609A is easy to set up to evaluate the perfor-

mance of the LTC6952. Follow the procedure below.

The LTC6952Wizard and the DC2026 are required to con-

trol the DC2609A through a personal computer (PC).

DC2026 CONFIGURATION

Refer to Figure 2. Set the JP3 jumper to the 3.3V (pre-

ferred) 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 communi-

cate 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 emula-

tor 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.

Figure 2. DC2026 Connector Location

J5, USB

CONNECTION

TO PC

J1, RIBBON CABLE

CONNECTION

TO DC2609A

JP3, SELECT

3.3V OPTION

Rev 0

DEMO MANUAL DC2609A

QUICK START PROCEDURE

Figure 3. LTC6952Wizard Screenshot

Download the LTC6952Wizard setup file.

Run the LTC6952Wizard setup file and follow the instruc

tions 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.

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.

3. Run the LTC6952Wizard application.

4. In LTC6952Wizard, click File →Load Settings and

select file “LTC6952 EZSync StandAlone.6952set”.

The DC2609A’s red STAT LED (D1) should illuminate.

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 50Ω, or poor spurious performance may result.

Rev 0

DEMO MANUAL DC2609A

TROUBLESHOOTING

If the green LEDs (D2, D3, or D4) do not illuminate:

1. Verify J30 measures between 9V and 12V (see the Typi-

cal DC2609A Requirements and Characteristics table)

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 Typi-

cal 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 per-

form the following steps:

1. Ensure the DC2026 is connected to PC

2. Disconnect and Reconnect DC2026 to PC

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 QuikEval™

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 the-

Linduino 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 sup-

plies 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 recom-

mended 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

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 select-

able 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

µF

C16

µF

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

* SE = Single-Ended, DIFF = Differential, DNI = Do Not Install

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 modifica-

tions required for the selected file.

SYNC OPTIONS

The LTC6952 data sheet describes several synchroniza-

tion 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 match-

ing trace lengths, which are optimized for skew measure-

ments. 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 50Ω impedance instruments connect OUTx+to the

instrument and OUTx–to a 50Ω termination, or vice versa.

The remaining five outputs (OUT10, OUT7, OUT6, OUT3,

and OUT2) are terminated with a 100Ω resistor onboard.

To connect these outputs to a 50Ω instrument, remove

the 100Ω termination, and install the appropriate SMAs

and AC blocking capacitors.

Refer to LTC6952 data sheet for differential termination

options.

Rev 0

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 (Ω) R7 (Ω) R5 (Ω) R50 (Ω) R10 (Ω) R3 (Ω) R8 (Ω)

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

EZS_SRQ–: GND

200k 0 DNI 0 0 DNI DNI

SSRQ Register Bit EZS_SRQ+: GND

EZS_SRQ–: GND

200k 0 DNI 0 0 DNI DNI

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 sche-

matic 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

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–J9 and J10 SMA Connectors*

OUT10+; OUT10–Two Outputs

(Not Connected)

J1 and J2 (SMA Not Populated) Onboard Differential 100Ω termination

OUT7+; OUT7–J7 and J8 (SMA Not Populated)

OUT6+; OUT6–J21 and J22 (SMA Not Populated)

OUT3+; OUT3–J15 and J16 (SMA Not Populated)

OUT2+; OUT2–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 50Ω, or poor spurious performance may result.

ASSEMBLY OPTIONS

Table 5. DC2609A Options

Assembly Version Part Number

DC2609A-A LTC6952IUKG

Rev 0

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., 0.68µF, X7R, 16V, 10%, 0603, AEC-

Q200

SAMSUNG, CL10B684KO8VPNC

3 0 CI2_A (OPT) CAP., OPTION, 1206 OPT

4 1 CI2_P CAP., 1µF, X7R, 25V, 10%, 1206, AEC-Q200 SAMSUNG, CL31B105KAPWPNE

5 1 CP_P CAP., 0.033µF, 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., 1µF, X5R, 16V, 10%, 0402 MURATA, GRM155R61C105KE01D

7 1 C2 CAP., 0.022µF, 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., 0.1µF, X7R, 10V, 10%, 0402 MURATA, GRM155R71A104KA01D AVX,

0402ZC104KAT2A

9 1 C7 CAP., 0.01µF, 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., 0.01µF, X7R, 6.3V, 10%, 0201 MURATA, GRM033R70J103KA01D

12 1 C13 CAP., 10pF, C0G, 50V, 10%, 0402 AVX, 04025A100KAT2A

13 3 C68, C91, C106 CAP., 22µF, ALUM., 63V, 20%, SMD

6.3 ×7.7mm, CE-BS Series

SUN ELECTRONIC INDUSTRIES CORPORATION,

63CE22BS

14 4 C69, C74, C92, C97 CAP., 10µF, ALUM., 63V, 20%, SMD

6.3 ×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., 4.7µF, X7R, 50V, 10% 1206 MURATA, GRM31CR71H475KA12L AVX,

12065C475KAT2A NIC,

NMC1206X7R475K50TRPLPF

16 6 C71, C76, C79, C86, C94, C103 CAP., 0.1µF, X7R, 16V, 10%, 0603 MURATA, GRM188R71C104KA01D YAGEO,

CC0603KRX7R7BB104

17 3 C80, C87, C90 CAP., 47µF, TANT, 35V, 10%, 7361 AVX, TAJV476K035RNJ

18 1 C99 CAP., 330µF, TANT, 10V, 10%, 7343 AVX, TPME337K010R0035

19 1 C100 CAP., 10µF, X7R, 25V, 10%, 1206 MURATA, GRM31CR71E106KA12L

20 1 C102 CAP., 1µF, X7R, 50V, 10%, 0805 TDK, C2012X7R1H105K125AB

21 1 C108 CAP., 47µF, X5R, 25V, 20%, 1206 TDK, C3216X5R1E476M160AC

22 1 C109 CAP., 4.7µF, X7R, 16V, 10%, 0805 MURATA, GRM21BR71C475KA73L AXV,

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,

E10, E11, E12, E13, E14, E15

TEST POINT, TURRET, 0.064", MTG. HOLE MILL-MAX, 2308-2-00-80-00-00-07-0

26 3 FB1, FB2, FB3 IND., 330Ω at 100MHz, FERRITE BEAD,

25%, 0.8A, 0.21Ω, 0603

TAIYO YUDEN, FBMH1608HL331-T

Rev 0

DEMO MANUAL DC2609A

PARTS LIST

ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER

27 2 FB4, FB5 IND., 220Ω at 100MHz, FERRITE BEAD, 3A,

0.04Ω, 0805

TDK, MPZ2012S221AT000

28 7 JP1, JP2, JP3, JP4, JP5, JP6, JP7 CONN., HDR, MALE, 1 ×3, 2mm, THT, STR Wurth Elektronik, 62000311121

29 0 J1, J2, J7, J8, J13, J14, J15, J16,

J21, J22 (OPT)

CONN., SMA, JACK, RCPT, END LAUNCH,

STR, 50Ω

OPT

30 19 J3, J4, J5, J6, J9, J10, J11, J12,

J17, J18, J19, J20, J24, J25, J26,

J27, J28, J29, J31

CONN., SMA, JACK, RCPT, END LAUNCH,

STR, 50Ω

CINCH CONNECTIVITY SOLUTIONS, 142-0701-851

31 1 J23 CONN., HDR., MALE, 2 ×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., 0Ω, 1/8W, 0805 VISHAY, CRCW08050000Z0EA YAGEO, RC0805JR-

070RL

34 1 L2 IND., 2.2µH, PWR, 20%, 8A, 23.5mΩ,

4.3mm ×4.3mm, AEC-Q200

“COILCRAFT, XFL4020-222MEB

COILCRAFT, XFL4020-222MEC”

35 2 R1, RZ_P RES., 48.7Ω, 1%, 1/10W, 0603, AEC-Q200 VISHAY, CRCW060348R7FKEA

36 4 R2, R39, R51, R52 RES., 0Ω, 1/10W, 0603 VISHAY, CRCW06030000Z0EA NIC, NRC06ZOTRF

37 0 R3, R8, R11, R13, R14, R15, R17,

R20, R35, R64, R69 (OPT)

RES., OPTION, 0402 OPT

38 2 R4, R73 RES., 49.9Ω, 1%, 1/16W, 0402 VISHAY, CRCW040249R9FKED NIC,

NRC04F49R9TRF

39 0 R5, R6, R21 (OPT) RES., 100Ω, 1%, 1/16W, 0402 OPT

40 8 R7, R9, R10, R42, R50, R54, R63,

R70

RES., 0Ω, 1/16W, 0402 VISHAY, CRCW04020000Z0ED NIC, NRC04ZOTRF

YAGEO, RC0402JR-070RL

41 1 R12 RES., 330Ω, 1%, 1/16W, 0402, AEC-Q200 VISHAY, CRCW0402330RFKED

42 11 R16, R19, R23, R24, R25, R26,

R29, R30, R33, R34, R40

RES., 100Ω, 1%, 1/16W, 0402 VISHAY, CRCW0402100RFKED KOA SPEER,

RK73H1ETTP1000F PANASONIC, ERJ2RKF1000X

ROHM, MCR01MZPF1000

43 1 R18 RES., 75Ω, 1%, 1/16W, 0402, AEC-Q200 VISHAY, CRCW040275R0FKED

44 1 R22 RES., 30Ω, 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., 619Ω, 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., 0Ω, 3/4W, 2010, AEC-Q200 VISHAY, CRCW20100000Z0EF

55 2 R68, R74 RES., 1MΩ, 1%, 1/10W, 0603 VISHAY, CRCW06031M00FKEA NIC,

NRC06F1004TRF PANASONIC, ERJ3EKF1004V

Rev 0

DEMO MANUAL DC2609A

ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER

56 1 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)

7 ×8

LINEAR TECH., LTC6952IUKG#PBF

LINEAR TECH., LTC6952IUKG#TRPBF

59 1 U2 OSC., 100MHz, 15pF, ±25ppm, 5 ×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, 4000-

4000MHz, 10pF, 50Ω, 0.50” SQ SMD, VCO,

PS = 8V, MAX VTUNE = 4.7V

CRYSTEK, CVCO55CC-4000-4000

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 ×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

PARTS LIST

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.

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