Analog Devices Linear Technology DC2085 Guida rapida alla configurazione

dc2085afb

DEMO MANUAL DC2085

DESCRIPTION

LTC2000, LTC2000A

16-, 14-, 11-Bit, 2.5Gsps to 2.7Gsps DACs

Demonstration circuit 2085 supports the LTC

2000 and

LTC2000A, a high speed, high dynamic range family of

DACs. It was specially designed for applications that re-

quire differential DC coupled outputs. DC2085 supports

the complete family of the LTC2000 including 16, 14 and

11 bit parts. For all the variations see Table 1. L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Analog

Devices, Inc. All other trademarks are the property of their respective owners.

PERFORMANCE SUMMARY

The circuitry on the analog outputs is optimized for analog

frequencies from DC-1.08GHz.

Design files for this circuit board are available at

http://www.linear.com/demo/DC2085

Specifications are at TA= 25°C

PARAMETER CONDITIONS MIN TYP MAX UNITS

Supply Voltage – DC2085 This supply must provide up to 800mA 4.8 5.0 5.2 V

Sampling Frequency (Sample Clock Frequency) 300 2500 or 2700 MHz

Sample Clock Level (Single-Ended) Use a 50Ω Source 0 15 dBm

LVDS Inputs Differential Input Voltage Range

Common Mode Voltage Range

±0.2

0.4

±0.6

1.8

Table 1. DC2085 Variants

DC2085 VARIANTS PART NUMBER RESOLUTION MAXIMUM SAMPLE RATE OUTPUT FREQUENCY

DC2085A-A LTC2000-16 16-Bit 2.5Gsps DC-1000MHz

DC2085A-B LTC2000-14 14-Bit 2.5Gsps DC-1000MHz

DC2085A-C LTC2000-11 11-Bit 2.5Gsps DC-1000MHz

DC2085A-D LTC2000A-16 16-Bit 2.7Gsps DC-1080MHz

DC2085A-E LTC2000A-14 14-Bit 2.7Gsps DC-1080MHz

DC2085A-F LTC2000A-11 11-Bit 2.7Gsps DC-1080MHz

dc2085afb

DEMO MANUAL DC2085

QUICK START PROCEDURE

DC2085 is easy to set up to evaluate the performance of the

LTC2000. Refer to Figure 1 for proper measurement equip-

ment set-up and follow the procedure below:

Setup

If the Altera Stratix IV GX FPGA Development Kit was not

supplied with the DC2085 demonstration circuit, follow

the Altera Stratix IV demo manual to install the required

software and for connecting the Altera Stratix IV to the

DC2085 and to a PC.

Figure 1. DC2085 Setup (zoom for details)

SINGLE-ENDED

SAMPLE CLOCK INPUT

CONNECT USB TO PC

RUNNING LTDACGen SOFTWARE

JUMPERS SHOWN IN THEIR DEFAULT POSITIONS

THE DC2085 CONNECTS TO THE ALTERA STRATIX IV

EVALUATION BOARD VIA HSMC CONNECTORS

DIFFERENTIAL OUTPUTS

NOMINAL OUTPUTS LOOK LIKE 50Ω

PER SIDE TO DRIVE AN EXTERNAL

BALUN, OR COMBINER

dc2085afb

DEMO MANUAL DC2085

QUICK START PROCEDURE

HARDWARE SETUP

SMAs

J2 & J3: Differential Trigger Input. Apply a signal to J2

from a 50Ω driver. Absorptive filters are required for

data sheet performance. Use J2 and J3 if the trigger is a

differential signal.

J4: Sample Clock Input. Apply a clock signal to this

SMA connector from a 50Ω driver. A 0dBm clock source

should be sufficient, but for best phase noise and jitter

performance, usethehighestpossibleamplitude andslew

rate, up to 15dBm.

J5 & J6: Differential Output Signals. These SMAs provide

access to the differential outputs of the DAC. The output

impedance is designed to be 50Ω at each SMA, or 100Ω

differential. Connect an external balun or combiner to

these pins to drive a single-ended spectrum analyzer.

Linear Technology has various coupon boards for specific

frequenciesandapplications.Moreinformationisavailable

at www.linear.com.

J8: SYNC. This SMA is to provide access to the sync pin

of the LT8614. It is not used in normal use.

Turrets

+5V: Positive Input Voltage for the DAC and Digital Circuits.

Thisvoltagefeedsaseriesofregulatorsthatsupplytheproper

voltages for the DAC. The voltage range for this turret is 4.8V

to 5.2V. Note: For close-in phase noise plots, driving this

voltage is not ideal. There is a known 20kHz noise hump in

the spectrum that is generated by the regulators. For the best

phase noise performance, back drive the onboard regulators

with the provided turrets from a low noise supply.

GND: Ground Connection. This demo board has only a

single ground plane. This turret should be tied to the GND

terminal of the power supply being used.

SVDD3V0: Optional 3.0V Input. This pin is connected

directly to the SVDD pin of the DAC. It requires a supply

that can deliver up to 100mA. Driving this pin will shut

down the onboard regulator.

AVDD3V3: Optional 3.3V Input. This pin is connected

directly to the AVDD3V3 pin of the DAC. It requires a

supply that can deliver up to 200mA. Driving this pin will

shut down the onboard regulator.

DVDD3V3: Optional 3.3V Input. This pin is connected

directly to the DVDD3V3 pin of the DAC. It requires a

supply that can deliver up to 50mA. Driving this pin will

shut down the onboard regulator.

AVDD1V8: Optional 1.8V Input. This pin is connected

directly to the AVDD1V8 pin of the DAC. It requires a

supply that can deliver up to 1A. Driving this pin will shut

down the onboard regulator.

DVDD3V3: Optional 1.8V Input. This pin is connected

directly to the DVDD1V8 pin of the DAC. It requires a

supply that can deliver up to 500mA. Driving this pin will

shut down the onboard regulator.

VP1: This is a test point that is at the output of the on-

board switching regulator. It is meant for test purposes.

It can also be driven to 2.5V to shut down the output of

the switching regulator.

TSTP & TSTN: These pins are tied directly to the TSTP

and TSTN pins of the DAC. They can be used to measure

the internal temperature and timing of the LVDS inputs.

FSADJ: This is an optional pin that is tied directly to the

FSADJ pin of the DAC. It can be used to set the full-scale

output current of the DAC. In normal operation this pin

is tied to GND through 500Ω to set a current of 40mA at

the output.

REFIO: This pin is tied directly to the REFIO pin of the

DAC and is used to set the reference voltage for the DAC.

Normally it is internally set to 1.25V but can be overdriven

with an external voltage from 1.1V to 1.4V.

Jumpers

The DC2085 demonstration circuit should have the fol-

lowing jumper settings as default positions.

JP1: PD. In the RUN position this pin results in normal

operation of the DAC. In the SHDN position the DAC is

powered down. (Default: RUN or up)

JP2: SPI and JTAG. This jumper selects how the FPGA is

programmed.In the SPIpositiontheFPGAisprogrammed

fromtheonboardFTDIchipandtheLTDACGensoftware.In

dc2085afb

DEMO MANUAL DC2085

the JTAG position the J9 is used with a JTAG programmer

to program the FPGA. (Default: SPI or down)

Connectors

J1: DC590. This is an optional header that can be used

to program the DAC with the DC590. (Default: removed)

J9: JTAG. This is an optional header that can be used to

program the FPGA through a JTAG programmer. (Default:

removed)

J7: USB. Connect a USB cable from J7 to a computer with

the LTDACGen software installed.

J10 & J11: HSMC Connectors. These connectors are

designed to connect to the Altera Stratix IV development

board. All of the communication between the FPGA and

the DAC is routed through these connectors.

APPLYING POWER AND SIGNALS TO THE DC2085

DEMONSTRATION CIRCUIT

If a Stratix IV demo board is used to supply data to the

DC2085, the two boards should first be bolted together

and a proper connection should be made. If Linear Tech-

nology provided the Stratix IV board the proper bit file is

already installed in flash memory and will begin to operate

when the board is powered on. If an unprogrammed FPGA

board is used, refer to the appropriate documentation on

how to program it.

Power should be applied to the system in this order:

1. Connect the Altera board to the provided power supply.

2. Connect the USB cable to J7.

3. Apply a clock to J4.

4. Connect any optional output board to J5 and J6.

5. Turn on the voltage to the Altera board.

6. Connect the 5V from a bench supply to the +5V turret

on the DC2085.

7. Open the LTDACGen software and hit connect.

LTDACGen should report back that it is connected to the

FPGA. See Figure 2:

QUICK START PROCEDURE

Figure 2. LTDACGen Connected to FPGA

dc2085afb

DEMO MANUAL DC2085

QUICK START PROCEDURE

ANALOG OUTPUT NETWORK

The analog output network of the DC2085 has been

designed to maximize the performance of the LTC2000.

The LTC2000 drives two 50Ω resistors on each side to

minimize the impedance it sees. This maximizes the SFDR

the DAC is able to produce. If a larger signal swing is

required this impedance can be increased, but the SFDR

might degrade. The output also has a pi network of 50Ω

resistors to pad the output impedance of the board up to

50Ω per side. This allows the demo board to drive a 50Ω

analyzer through a balun or other combiner.

Linear Technology has various coupon boards for specific

frequenciesandapplications.Moreinformationisavailable

at www.linear.com.

SAMPLE CLOCK

The sample clock to the DC2085 demonstration circuit

board is marked J4. As a default it is a single-ended 50Ω

input port. There is an onboard balun that does a single-

ended to differential translation.

For the best noise performance, the sample input must

be driven with a very low jitter signal generator source.

The amplitude should be as large as possible up to ±1.8V

or 9dBm.

SOFTWARE

The software for the DC2085, LTDACGen is available at

www.linear.com free of charge. It simplifies the creation

of complex waveforms and loading them into the FPGA to

test the DC2085. For more information about how to use

the LTDACGen software, refer to the help files that come

with the software.

RESULTS

After everything is set up and the software is con-

nected to the DAC demo system, a sine wave can be

added to the output waveform. The default frequency is

399.932861328MHz (Figure 3). By clicking Update FPGA,

the data is sent to the FPGA and is then used to program

the DAC. A spectrum analyzer can then be used to view

the results (Figure 4).

Figure 3. Default Frequency

dc2085afb

DEMO MANUAL DC2085

Figure 4. DC2085 Results. Close-In (Top) and Wideband (Bottom)

QUICK START PROCEDURE

dc2085afb

DEMO MANUAL DC2085

PARTS LIST

ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER

Required Circuit Components

1 13 C1, C25, C26, C29, C31,

C32, C33, C34, C35, C36,

C37, C71, C72

CAP., X7R, 0.1µF, 16V 10% 0402 AVX, 0402YC104KAT2A

2 4 C2, C3, C8, C19 CAP., NPO, 0.01µF, 25V 5% 0603 TDK, C1608C0G1H103J

3 9 C4, C6, C9, C11, C14,

C18, C67, C68, C69 CAP., X7R, 1µF, 16V 10% 0603 AVX, 0603YC105KAT2A

4 5 C5, C7, C10, C12, C15 CAP., TANT., 47µF, 16V 10% 7343 AVX, TAJD476K016RNJ

5 4 C13, C16, C27, C28 CAP., X5R, 4.7µF, 16V 20% 1206 TDK, C3216X5R1C475M

6 2 C17, C40 CAP., X5R, 10µF, 10V 20% 0603 AVX, 0603ZD106MA2T

7 1 C20 CAP., C0G, 4.7pF, 50V ± 0.25pF 0603 AVX, 06035A4R7CAT2A

8 2 C21, C24 CAP., X7R, 0.1µF, 16V 10% 0603 TDK, C1608X7R1C104K

9 1 C22 CAP., X7R, 1µF, 25V 10% 0603 TDK, C1608X7R1E105K

10 2 C23, C70 CAP., X7R, 47µF, 10V 10% 1210 MURATA, GRM32ER71A476KE15L

11 1 C30 CAP., X5R, 3.3µF, 16V 10% 0603 TDK, C1608X5R1C335K

12 2 C38, C39 CAP., COG, 27pF, 50V 5% 0402 TDK, C1005C0G1H270J

13 2 C41, C42 CAP., COG, 100pF, 25V 5% 0201 TDK, C0603C0G1E101J

14 1 C43 CAP., X5R, 0.01µF, 16V 10% 0402 MURATA, GRM155R61C103KA01D

15 1 C44 CAP., X7R, 47nF, 25V 10% 0402 MURATA, GRM155R71E473KA88D

16 9 C45, C48, C49, C53, C54,

C58, C61, C62, C64 CAP., X5R, 100µF, 6.3V 20% 1206 TDK, C3216X5R0J107M

17 10 C46, C50, C51, C52, C55,

C56, C57, C59, C60, C63 CAP., X7S, 2.2µF, 4V 20% 0306 MURATA, LLL185C70G225ME01L

18 1 C47 CAP., COG, 10pF, 25V 5% 0201 MURATA, GRM0335C1E100JA01D

19 0 C65 CAP., OPT, 0402 OPTION

20 1 C66 CAP., NP0, 1pF, 25V ±.25pF 0402 AVX, 04023A1R0CAT2A

21 2 C73, C74 CAP., X7R, 4.7µF, 50V 10% 1206 MURATA, GRM31CR71H475KA12L

22 1 C75 CAP., X7R, 10µF, 50V 10% 1210 MURATA, GRM32ER71H106KA12L

23 2 C76, C77 CAP., X5R, 1µF, 50V 10% 0603 MURATA, GRM188R61H105KAALD

24 1 D1 DIODE, TVS, 70V,SMA DIODES INC./ ZETEX, SMAT70A-13-F

25 1 D2 DIODE, TVS, 24V,SMA DIODES INC./ ZETEX, SMAJ24A-13-F

26 1 D3 LED, RED, WATERCLEAR, 0805 WÜRTH, 150080RS75000

27 10 E1, E2, E3, E5–E11 TEST POINT, TURRET, .061, PBF MILL-MAX, 2308-2-00-80-00-00-07-0

28 2 E4, E12 TEST POINT, TURRET, .094, PBF MILL-MAX, 2501-2-00-80-00-00-07-0

29 2 JP1, JP2 HEADER, 3 PIN, .079 SULLINS, NRPN031PAEN-RC

30 1 J1 HEADER, 2×7 DUAL ROW MOLEX 87831-1420

31 3 J2, J3, J8 CON., SMA JACK, STRAIGHT, THRU-HOLE AMPHENOL CONNEX, 132134

32 1 J4 CON., SMA PCB TOP MOUNT AEP, 9650-1113-005

33 2 J5, J6 CON., SMA 50Ω EDGE-LAUNCH EMERSON, 142-0701-851

34 1 J7 CONNECTOR, USB TYPE B, RIGHT ANGLE PCB

MOUNT FCI, 61729-0010BLF

35 1 J9 HEADER, 2X5, 0.100 SAMTEC, TSW-105-07-L-D

36 2 J10, J11 CONNECTOR, HSMC SAMTEC, ASP-122952-01

dc2085afb

DEMO MANUAL DC2085

PARTS LIST

ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER

37 6 L1, L2, L3, L4, L6, L7 FERRITE BEAD, 33Ω AT 100mHz, 1206 MURATA, BLM31PG330SN1L

38 1 L5 INDUCTOR, 2.2µH, 20% HIGH CURRENT, SMT VISHAY, IHLP2020BZER2R2M11

39 1 L8 INDUCTOR, CERAMIC CHIP, 1nH, 5%, 0402 COILCRAFT, 0402CS-1N0XJLU

40 1 L9 FERRITE BEAD, 30Ω AT 100mHz, 0805 TDK, MPZ2012S300A

41 1 L10 INDUCTOR, 6.8µH, 20% HIGH CURRENT, SMT VISHAY, IHLP2020BZER6R8M11

42 2 MTG5, MTG6 STANDOFF, NYLON 0.5" KEYSTONE, 8833 (SNAP ON)

43 2 Q1, Q2 TRANSISTOR, N-CH. POWER MOSFET, SOIC 8L FAIRCHILD, FDS8870

44 6 R1, R2, R3, R13, R17,

R30 RES., CHIP, 1k, 1/16W, 5% 0402 VISHAY, CRCW04021K00JNED

45 1 R4 RES., CHIP, 4.7k, 1/16W, 5% 0402 YAGEO, RC0402JR-074K7L

46 4 R5, R14–R16 RES., CHIP, 10k, 1/16W, 5% 0402 YAGEO, RC0402JR-0710KL

47 2 R6, R8 RES., CHIP, 2k, 1/16W, 5% 0402 VISHAY, CRCW04022K00JNED

48 0 R7, R10, R23, R24, R25,

R27, R28, R36, R37,

R38, R39, R43, R62, R63

RES., CHIP, OPT, 0402 OPTION

49 1 R9 RES., CHIP, 39Ω, 1/16W, 1% 0402 VISHAY, CRCW040239R0FKED

50 1 R11 RES., CHIP, 0Ω JUMPER, 1/16W, 0402 VISHAY, CRCW04020000Z0ED

51 1 R12 RES., CHIP, 12k, 1/16W, 5% 0402 VISHAY, CRCW040212K0JNED

52 1 R18 RES., CHIP, 2.2k, 1/16W, 5% 0402 VISHAY, CRCW04022K20JNED

53 2 R19, R20 RES., CHIP, 3.24k, 1/16W, 1% 0402 VISHAY, CRCW04023K24FKED

54 1 R21 RES., CHIP, 1k, 1/16W, 1% 0402 YAGEO, RC0402FR-071KL

55 1 R22 RES., CHIP, 7.15k, 1/16W, 1% 0402 VISHAY, CRCW04027K15FKED

56 2 R26, R29 RES., CHIP, 49.9Ω, 1/6W, 1% 0201 VISHAY, CRCW020149R9FNED

57 7 R31-R35, R41, R42 RES., CHIP, 10Ω, 1/16W, 1% 0402 VISHAY, CRCW040210R0FKED

58 10 R40, R44, R46, R47,

R48, R57, R58, R59,

R60, R61

RES., CHIP, 50Ω, HIGH FREQ., 1/20W, 0.1% 0402 VISHAY, FC0402E50R0BST1

59 1 R45 RES., CHIP, 499Ω, 1/16W, 1% 0402 VISHAY, CRCW0402499RFKED

60 1 R49 RES., CHIP, 41.2k, 1/10W, 1% 0603 VISHAY, CRCW060341K2FKEA

61 1 R50 RES., CHIP, 309k, 1/10W, 1% 0603 VISHAY, CRCW0603309KFKEA

62 1 R51 RES., CHIP, 243k, 1/10W, 1% 0603 VISHAY, CRCW0603243KFKEA

63 1 R52 RES., CHIP, 50Ω, 1/8W, 5% 0603 VISHAY, FC0603E50R0JST1

64 1 R53 RES., CHIP, 560Ω, 1/10W, 5% 0603 VISHAY, CRCW0603560RJNEA

65 1 R54 RES., CHIP, 10k, 1/10W, 1% 0603 VISHAY, CRCW060310K0FKEA

66 2 R55, R56 RES., CHIP, 20Ω, 1/16W, 1% 0402 VISHAY, CRCW040220R0FKED

67 1 T1 TRANSFORMER, BALUN ANAREN, B0430J50100AHF

68 1 U2 IC, USB TO MULTIPURPOSE UART/FIFO, TQFP FTDI, FT2232HL

69 1 U3 IC, QUAD MUX/DEMUX, TSSOP-16 FAIRCHILD, FST3257MTCX

70 1 U4 IC, EEPROM 1kBIT 3MHZ, 8TSSOP MICROCHIP, 93LC46C-I/ST

71 1 U5 IC, MICROPOWER REGULATOR, SO-8 LINEAR TECHNOLOGY, LT1763CS8-3#PBF

72 2 U6, U7 IC, MICROPOWER REGULATOR, SO-8 LINEAR TECHNOLOGY, LT1763CS8-3.3#PBF

73 1 U8 IC, BUCK REGULATOR, QFN LINEAR TECHNOLOGY, LT8614IUDC#PBF

74 1 U9 IC, VOLTAGE REFERENCE, MSOP LINEAR TECHNOLOGY, LTC6655CHMS8-2.048#PBF

dc2085afb

DEMO MANUAL DC2085

PARTS LIST

ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER

75 2 U10, U11 I.C., LOW DROPOUT REGULATOR, 3×3mm, DFN LINEAR TECHNOLOGY, LT3080EDD#PBF

76 1 U12 I.C., 80V IDEAL DIODE, DFN-6L LINEAR TECHNOLOGY, LTC4359HDCB-#TRPBF

77 2 XJP1, XJP2 SHUNT, 2mm SAMTEC, 2SN-BK-G

78 1 Y1 CRYSTAL, 12.0 MHz, SMT ABRACON, ABMM2-12.000MHZ-E2-T

DC2085A-A Required Circuit Components

1 1 GENERAL BOM DC2085A

2 1 U1 IC, 16-BIT 2.5Gsps DAC LINEAR TECHNOLOGY, LTC2000IY-16

DC2085A-B Required Circuit Components

1 1 GENERAL BOM DC2085A

2 1 U1 IC, 14-BIT 2.5Gsps DAC LINEAR TECHNOLOGY, LTC2000IY-14

DC2085A-C Required Circuit Components

1 1 GENERAL BOM DC2085A

2 1 U1 IC, 11-BIT 2.5Gsps DAC LINEAR TECHNOLOGY, LTC2000IY-11

DC2085A-D Required Circuit Components

1 1 GENERAL BOM DC2085A

2 1 U1 IC, 16-BIT 2.7Gsps DAC LINEAR TECHNOLOGY, LTC2000AIY-16

DC2085A-E Required Circuit Components

1 1 GENERAL BOM DC2085A

2 1 U1 IC, 14-BIT 2.7Gsps DAC LINEAR TECHNOLOGY, LTC2000AIY-14

DC2085A-F Required Circuit Components

1 1 GENERAL BOM DC2085A

2 1 U1 IC, 11-BIT 2.7Gsps DAC LINEAR TECHNOLOGY, LTC2000AIY-11

dc2085afb

DEMO MANUAL DC2085

Information furnished by Linear Technology Corporation is believed to be accurate and reliable.

However, no responsibility is assumed for its use. Linear Technology Corporation makes no representa-

tion that the interconnection of its circuits as described herein will not infringe on existing patent rights.

Figure 5. DC2085 Demo Circuit Schematic (Sheet 1)

SCHEMATIC DIAGRAM

D D

C C

B B

A A

01/30/2014

LTC2000 HIGH SPEED DAC

DEMO CIRCUIT 2085A

U1*

TSTNTSTP

(FROM PAGE 4)

(T0 PAGE 4)

TO PAGE 4

(TO PAGE 4)

LTC2000-X FAMILY

(T0 PAGE 4)

ASSY

LTC2000IY-16

ASSEMBLY TABLE

LTC2000IY-14

LTC2000IY-11

-B

-C

-A

NOTES:

1. ALL RESISTORS ARE SIZE 0402, U.O.N.

2. REFER TO PAGE 4 FOR LTC2000 POWER CONNECTIONS.

DIGITAL INPUTS [DA0..DA15] AND [DB0..DB15] FROM PAGE 4

FSADJ REFIO

TRIG N

TRIG P

IOUTPB

IOUTNB

RUN

SHDN

DC590

LTC2000AIY-16

LTC2000AIY-14

LTC2000AIY-11

-E

-F

-D

SVDD3V0

DCKOP

DCKON

DCKIN

DCKIP

SCK_ALT

CS_ALT

CS_FTDI

SCK_FTDI

SDI_ALT

SDO_ALT

PD_ALT

SDI_FTDI

SDO_FTDI

PD_ALT

DAN15 DAP15

DAP14

DAP13

DAP12

DAP11

DAP10

DAP9

DAP8

DAP7

DAP6

DAP5

DAP4

DAP3

DAP2

DAP1

DAP0

DAN14

DAN13

DAN12

DAN11

DAN10

DAN9

DAN8

DAN7

DAN6

DAN5

DAN4

DAN3

DAN2

DAN1

DAN0

DBN0

DBN1

DBN2

DBN3

DBN4

DBN5

DBN6

DBN7

DBN8

DBN9

DBN10

DBN11

DBN12

DBN13

DBN14

DBN15

DBP0

DBP1

DBP2

DBP3

DBP4

DBP5

DBP6

DBP7

DBP8

DBP9

DBP10

DBP11

DBP12

DBP13

DBP14

DBP15

TRIGGER_N

TRIGGER_P

SIZE

DATE:

IC NO. REV.

SHEET OF

TITLE:

APPROVALS

PCB DES.

APP ENG.

TECHNOLOGY Fax: (408)434-0507

Milpitas, CA 95035

Phone: (408)432-1900

1630 McCarthy Blvd.

LTC Confidential-For Customer Use Only

CUSTOMER NOTICE

LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A

CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;

HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO

VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL

APPLICATION. COMPONENT SUBSTITUTION AND PRINTED

CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT

PERFORMANCE OR RELIABILITY. CONTACT LINEAR

TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.

THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND

SCHEMATIC

SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.

SCALE = NONE

www.linear.com

N/A

M. HAWKINS

C. MAYOTT

SIZE

DATE:

IC NO. REV.

SHEET OF

TITLE:

APPROVALS

PCB DES.

APP ENG.

TECHNOLOGY Fax: (408)434-0507

Milpitas, CA 95035

Phone: (408)432-1900

1630 McCarthy Blvd.

LTC Confidential-For Customer Use Only

CUSTOMER NOTICE

LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A

CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;

HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO

VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL

APPLICATION. COMPONENT SUBSTITUTION AND PRINTED

CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT

PERFORMANCE OR RELIABILITY. CONTACT LINEAR

TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.

THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND

SCHEMATIC

SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.

SCALE = NONE

www.linear.com

N/A

M. HAWKINS

C. MAYOTT

SIZE

DATE:

IC NO. REV.

SHEET OF

TITLE:

APPROVALS

PCB DES.

APP ENG.

TECHNOLOGY Fax: (408)434-0507

Milpitas, CA 95035

Phone: (408)432-1900

1630 McCarthy Blvd.

LTC Confidential-For Customer Use Only

CUSTOMER NOTICE

LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A

CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;

HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO

VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL

APPLICATION. COMPONENT SUBSTITUTION AND PRINTED

CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT

PERFORMANCE OR RELIABILITY. CONTACT LINEAR

TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.

THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND

SCHEMATIC

SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.

SCALE = NONE

www.linear.com

N/A

M. HAWKINS

C. MAYOTT

REVISION HISTORY

DESCRIPTION DATEAPPROVEDECO REV

C. MAYOTTPRODUCTION3

REVISION HISTORY

DESCRIPTION DATEAPPROVEDECO REV

C. MAYOTTPRODUCTION3

REVISION HISTORY

DESCRIPTION DATEAPPROVEDECO REV

C. MAYOTTPRODUCTION3

R4110

R61

0402

R33 10

R31 10

C41

100pF

COG

0201

R4210

C42

100pF

COG

0201

R62

OPT

0402

R46

0402

R48

0402

R59

0402

R40

0402

VUNREG

GND

MISO

MOSI/SDA

EESDA

EESCL

GND

VCCIO

SCK/SCL

GND

EEVCC

EEGND

GPIO

R23

OPT

0402

C40

10uF

R24

OPT

0402

C47

10pF

0201

COG

GND

ANAREN XINGER

R38 OPT

R26

49.9

0201

R32 10

R35 10

E11

R37 OPT

R29

49.9

0201

C65

OPT

0402

L8 1nH

1 2

R63

OPT

0402

R60

0402

R28

OPT

0402

R27

OPT

0402

R47

0402

R58

0402

R34 10

R25

OPT

0402

E10

C66

1pF

NP0

DAP15

DAN15

DAP14

DAN14

DAP13

DAN13

DAP12

DAN12

DAP11

DAN11

DAP10

DAN10

DAP9

DAN9

DAP8

DAN8

DAP7

DAN7

DAP6

DAN6

DAP5

DAN5

DAP4

DAN4

DAP3

DAN3

DAP2

DAN2

DAP1

DAN1

DAP0

DAN0

DBP15

A10

DBN15

DBP14

B10

DBN14

DBP13

C10

DBN13

DBP12

D10

DBN12

DBP11

E10

DBN11

DBP10

F10

DBN10

DBP9

G10

DBN9

DBP8

H10

DBN8

DBP7

K10

DBN7

DBP6

L10

DBN6

DBP5

M10

DBN5

DBP4

N10

DBN4

DBP3

P10

DBN3

DBP2

Q10

DBN2

DBP1

R10

DBN1

DBP0

S10

DBN0

DCKIP

J10

DCKIN

CKP

CKN

IOUTP

IOUTN

SCK

SD0

SDI

REFIO

FSADJ

DCKON

DCKOP

TSTP

TSTN

SVDD

R43

OPT

0402

JP1

R57

0402

R39 OPT

C43

0.01uF

0402

X5R

R44

0402

R36 OPT

R45 499

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