Linear Technology LTC2393-16 Kurzanleitung zur Einrichtung

dc1501A

DEMO MANUAL DC1501A

DESCRIPTION

LTC2393-16/LTC2392-16/

LTC2391-16, 1MSPS, 0.5MSPS,

0.25MSPS Low Noise ADC

The LTC2393-16 family are low noise high speed ADCs

with both parallel and serial outputs that can operate from

a single 5V supply. The LTC2393-16 family supports a

large ±4.096V fully differential input range. This makes

them ideal for high performance applications that require

maximum dynamic range. Demonstration circuit 1501A

provides the user a means of evaluating the performance

of these ADCs in both parallel and serial modes and is L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear

Technology Corporation. All other trademarks are the property of their respective owners.

intended to demonstrate recommended grounding, part

placement, routing and bypassing for this family of parts.

Also several suggested driver circuits for the analog inputs

will be presented.

Design ﬁles for this circuit board are available at http://

www.linear.com/demo.

Figure 1. DC1501A Connection Diagram

–9V +9VGND

DC718

CLK IN

1MHz MAX

(80MHz FOR SERIAL)

3.3VPK-PK MAXIMUM

AIN–

0V TO 4.096V

MAXIMUM

AIN+

0V TO 4.096V

MAXIMUM

DEMO BOARD IC MAX SAMPLE RATE PARALLEL MAX CLK IN SERIAL MAX CLK IN

DC1501A-A LTC2393CLX-16 1Msps 1MHz 80MHz

DC1501A-B LTC2392CLX-16 0.5Msps 0.5MHz 40MHz

DC1501A-C LTC2391CLX-16 0.25Msps 0.25MHz 20MHz

dc1501A

DEMO MANUAL DC1501A

DC718B/C QUICK START PROCEDURE

Check to make sure that all switches and jumpers are

set as shown in the connection diagram of Figure 1. The

default connections conﬁgure the ADC for parallel opera-

tion with the output data in offset binary format. The

analog input is AC-coupled and the internal reference of

the ADC is used.

Connect DC1501A to a DC718B/C USB High Speed Data

Collection Board using connector J1. Connect DC718B/C

to a host PC with a standard USB A/B cable. Apply ±9V to

the indicated terminals. Apply a low jitter signal source to

J17. The default setup uses a single-ended to differential

converter so that it is only necessary to apply an input

signal to J17. Connect a low jitter 1MHz 3.3VP-P sine wave

or square wave to connector J16 for LTC2393-16. Apply

500kHz for LTC2392-16 and 250kHz for LTC2391-16.

Note that J16 has a 50Ω termination resistor to ground.

Run the QuickEval-II software (Pscope.exe version K66

or later) supplied with DC718B/C or download it from

www.linear.com.

Complete software documentation is available from the

Help menu. Updates can be downloaded from the Tools

menu. Check for updates periodically as new features

may be added.

The Pscope software should recognize DC1501A and

conﬁgure itself automatically.

Click the Collect button (See Figure 6) to begin acquiring

data. The Collect button then changes to Pause, which

can be clicked to stop data acquisition.

DC1501A SETUP

DC Power

DC1501 requires ±9VDC at approximately 100mA. Most

of the supply current is consumed by the CPLD, op amps,

regulators and discreet logic on the board. The ±9VDC

input voltage powers the ADC through LT1763 regulators

which provide protection against accidental reverse bias.

Additional regulators provide power for the CPLD and

op amps. See Figure 1 for connection details.

Clock Source

You must provide a low jitter 3.3VP-P sine or square wave

to J16. The clock input is AC-coupled so the DC level of the

clock signal is not important. A generator like the HP8644

or similar is recommended.Even a good generatorcan start

to produce noticeable jitter at low frequencies. Therefore

it is recommended for lower sample rates to divide down

a higher frequency clock to the desired sample rate. One

way to accomplish this is by placing the ADC in the serial

mode. This can be accomplished by setting the SER/PARL

position of SW1 to the high position. In the serial mode

the ratio of clock frequency to conversion rate is 80:1.

This limits the max clock frequency of DC1501A-A to

80MHz in serial mode. DC1501A-B is limited to 40MHz and

DC1501A-C is limited to 20MHz. In the parallel mode there

is a 1:1 ratio of clock frequency to conversion rate. If the

clockinput isto bedriven withlogic, itis recommendedthat

the 50Ω terminator (R17) be removed. Slow rising edges

may compromise SNR of the converter in the presence of

high-amplitude higher frequency input signals.

Data Output

Parallel data output from this board (0V to 3.3V default),

if not connected to DC718, can be acquired by a logic

analyzer, and subsequently imported into a spread-sheet,

ormathematical packagedepending onwhat formof digital

signal processing is desired. Alternatively, the data can be

fed directly into an application circuit. Use pin 3 of J1 to

latch the data. The data can be latched using either edge

of this signal. The data output signal levels at J1 can also

be reduced to 0V to 2.5V if the application circuit cannot

tolerate the higher voltage. Thisis accomplished by moving

J13 to the 2.5V position.

dc1501A

DEMO MANUAL DC1501A

Figure 2. Single-Ended to Differential Converter

Reference

J7, J8 and J11 allow you to select an on chip reference

or an external LT1790A-4.096 as the reference. The initial

tolerance and drift speciﬁcations of the external reference

are better than the on chip reference. To use the internal

reference set J7 to FLT, J8 to ADC and J11 to REFIN. To use

the LT1790A-4.096 set J7 and J11 to GND and J8 to EXT.

Analog Input

The default driver for the analog inputs of the LTC2393

family on DC1501A is shown in Figure 2. This circuit

converts a single-ended 0V to 4.096V input signal applied

at AIN into a differential signal with a swing of ±4.096V

between the +IN and –IN inputs of the ADC. In addition this

circuit band limits the input frequencies to approximately

100kHz which is the useful bandwidth of these ADCs.

Alternatively, if your application circuit produces a differ-

ential signal which can drive the ADC but you need to

level shift the input signal, the circuits of Figure 3 and

Figure 4 can be used. The circuit of Figure 3 AC-couples

the input signal and is usable down to about 10kHz. The

lower frequency limit can be extended by increasing C37

and C51. The circuit of Figure 3 can be implemented on

DC1501A by putting J20 and J21 in the AC position and

moving R2 and R3 to the R50 and R53 positions. One of

these RC pairs can be attached to the input of the circuit in

Figure 2. This allows a single-ended input signal to be level

shifted. This is the default condition for DC1501A. Figure

4’s input driver allows the input voltage range to go below

ground. It DC-couples and level shifts the analog input at

the expense of attenuating the input level by a factor of 2.

The circuit of Figure 4 can be implemented on DC1501A

by setting VCM to External and biasing the external pin to

4.096V replacing R1 and R6 with 1kΩ, putting J20 and

J21 in the DC position and moving R2 and R3 to the R50

and R53 positions.

For SINAD, THD or SNR testing a low noise, low distortion

generatorsuch asthe B&KType 1051or StanfordResearch

DS360 should be used.

DC1501A SETUP

dc1501A

DEMO MANUAL DC1501A

Data Collection

This demoboard istestedin housebyduplicating theFFT plot

shown in theADC data sheet. Thisinvolves using alow jitter,

1MHz (500kHz for LTC2392-16, 250kHz for LTC2391-16)

clock source for the encode clock, along with a low noise,

low distortion sinusoidal generatorat a frequency of 20kHz.

The input signal level is approximately –1dBfs.

The input is ﬁltered with a 20kHz single pole RC ﬁlter

shown in Figure 5. The FFT shown in the data sheet is a

16384-point FFT. A typical FFT obtained with DC1501A

is shown in Figure 6. Note that to get the real SNR, the

DC1501A SETUP

Figure 3. AC-Coupled Differential Driver

Figure 4. DC Coupled Differential Driver

signal level (–1dB) has to be added back to the SNR that

PScope displays. With the example shown in Figure 6 this

means that the actual SNR would be 94.061dB. Taking the

RMS sum of the recalculated SNR and the THD yields a

SINAD of 93.75dB which is fairly close to the typical value

for this ADC.

There are a number of scenarios that can produce

misleading results when evaluating an ADC. One that is

common is feeding the converter with a frequency, that

is a sub-multiple of the sample rate, and which will only

exercise a small subset of the possible output codes.

dc1501A

DEMO MANUAL DC1501A

If you do not have a signal generator capable of ppm levels

of frequency accuracy or if it cannot be slaved to the clock

frequency, you can use an FFT with windowing to reduce

the “leakage” or spreading of the fundamental, to get a

close approximation of the performance parameters. If an

ampliﬁer or clock source with poor phase noise is used,

the windowing will not improve the SNR.

The signal source typically usedfor in housetesting is aB&K

1051. A lowjitter RFoscillator such asthe HP8644is used as

the clocksource. Aswith anyhighperformance ADC,this part

is sensitive to layout. The area immediately surrounding the

ADC onDC1501 shouldbeused asa guidelineforplacement,

and routing of the various components associated with the

ADC. Note should also be taken of the ground plane used

in the layout of this board.

DC1501A SETUP

Figure 5. 20kHz RC ﬁlter

Figure 6. DC1501A FastDAACS Screenshot

dc1501A

DEMO MANUAL DC1501A

DC1501A MISCELLANEOUS DIP SWITCHES AND JUMPERS

Deﬁnitions

J2- -INPUT sets the bias point for the –input of U2A. The

default is –AIN.

J6- VCM sets the DC bias for AIN+and AIN–when the inputs

are AC-coupled. INT is the default position.

SW1-

SER_PARL- Selects serial or parallel operation. Default

position is parallel. In parallel mode fs= fclk. In serial mode

fs = fclk/80.

OB/2CL- Selects offset binary or two’s complement

data format for ADC output word. The default is offset

binary.

CSL- This pin must be kept low for normal operation.

RDL- This pin must be kept low for normal operation.

dc1501A

DEMO MANUAL DC1501A

PARTS LIST

ITEM QUANTITY REFERENCE DESIGNATOR DESCRIPTION MANUFACTURERS PART NUMBER

REQUIRED CIRCUIT COMPONENTS:

1 0 C1, C9, C39, C52, C54, C55

(opt.)

CAP., 0603

2 1 C2 CAP., NP0, 2200pF, 25V, 5% 1206 AVX, 12063A222JAT2A

3 11 C4, C5, C7, C12, C16,

C23-C25, C33, C36, C41

CAP., X7R, 1μF, 16V, 10% 0603 AVX, 0603YC105KAT2A

4 9 C10, C18, C20, C22, C28,

C30, C37, C51, C53

CAP., X5R, 10μF, 6.3V, 20% 0603 Taiyo Yuden, JMK107BJ106MA (2rls, PbF)

5 2 C13, C14 CAP., X5R, 10μF, 10V, 20% 0805 Taiyo Yuden, LMK212BJ106MG

6 9 C11, C27, C29, C31, C32,

C34, C35, C38, C50

CAP., X7R, 0.1μF, 25V, 10% 0603 AVX, 06033C104KAT2A

7 4 C15, C17, C19, C21 CAP., X7R, 0.01μF, 50V, 10% 0603 AVX, 06035C103KAT2A

8 1 C26 CAP., X5R, 47μF, 16V, 20% 1210 Taiyo Yuden, EMK325BJ476MM

9 1 C40 CAP., X5R, 4.7μF, 4V, 20% 0402 Taiyo Yuden, AMK105BJ475MV-F

10 8 C42-C49 CAP., X5R, 0.1μF, 10V, 10% 0402 AVX, 0402ZD104KAT2A

11 9 E1-E9 Testpoint, Turret, .061” pbf MILL-MAX, 2308-2-00-80-00-00-07-0

12 1 J1 Header, .1 ×.1 CNTRS, 40-Pin Samtec, TSW-120-07-L-S

13 1 JTAG 0.1” × 5 Double Row Header Samtec, TSW-105-07-L-D

14 1 J2 0.1” × 3 Double Row Header Samtec, TSW-103-07-L-D

15 6 J6, J7, J8, J11, J20, J21 3-Pin 0.1” Single Row Header Samtec, TSW-103-07-L-S (PbF)

16 8 XJTAG, XJ2, XJ6-J8, XJ11,

XJ19-J21

Shunt, 0.1” Center Samtec, SNT-100-BK-G (PbF)

17 1 J13 3-Pin 2mm Single Row Header Samtec, TMM103-02-L-S

18 1 XJ13 Shunt, 2mm Center Samtec, 2SN-BK-G

19 3 J16, J17, J18 CONN, BNC, 5-Pins Connex, 112404

20 2 R1, R6 RES., Chip, 0, 1/10W, 0603 Vishay, CRCW06030000Z0EA

21 2 R2, R3 RES., Chip, 249, 1/10W, 1% 0603 Vishay, CRCW0603249RFKEA

22 3 R4, R5, R7 RES., Chip, 301, 1/10W, 1% 0603 Vishay, CRCW0603301RFKEA

23 3 R8, R9, R10 RES., Chip, 4.99k, 1/10W, 1% 0603 Vishay, CRCW06034K99FKEA

24 3 R11, R12, R28 RES., Chip, 1k, 1/10W, 5% 0603 Vishay, CRCW06031K00JNEA

25 2 R15, R13 RES., Chip, 3.92k, 1/10W, 1% 0603 Vishay, CRCW06033K92FKEA

26 6 R14, R16, R18, R19, R30,

R37

RES., Chip, 1.00k, 1/10W, 1% 0603 Vishay, CRCW06031K00FKEA

27 1 R17 RES., Chip, 49.9, 1/4W, 1% 1206 Vishay, CRCW120649R9FKEA

28 3 R20, R22, R49 RES., Chip, 33, 1/10W, 5% 0603 Vishay, CRCW060333R0JNEA

29 1 R24 RES., Chip, 1.0, 1/10W, 5% 0603 Vishay, CRCW06031R00JNEA

30 1 R25 RES., Chip, 1.69k, 1/10W, 1% 0603 Vishay, CRCW06031K69FKEA

31 1 R26 RES., Chip, 1.54k, 1/10W, 1% 0603 Vishay, CRCW06031K54FKEA

32 1 R27 RES., Chip, 2.80k, 1/10W, 1% 0603 Vishay, CRCW06032K80FKEA

33 0 R29, R36, R38, R50, R53,

R55(opt)

RES., Chip, 0603

34 4 R31, R32, R33, R34 RES., Chip, 1k, 1/16W, 5% 0402 Vishay, CRCW04021K00JNED

35 5 R35, R40, R41, R42, R43 RES., Chip, 10k, 1/16W, 5% 0402 Vishay, CRCW040210K0JNED

36 4 R45, R46, R47, R48 RES., Chip, 300, 1/16W, 5% 0402 Vishay, CRCW0402300RJNED

dc1501A

DEMO MANUAL DC1501A

ITEM QUANTITY REFERENCE DESIGNATOR DESCRIPTION MANUFACTURERS PART NUMBER

REQUIRED CIRCUIT COMPONENTS:

37 2 R51, R52 RES., Chip, 49.9, 1/16W, 1% 0402 Vishay, CRCW040249R9FKED

38 1 R54 RES., Chip, 10k, 1/10W, 5% 0603 Vishay, CRCW060310K0JNEA

39 1 SW1 Switch, 219-4MST, CTS Electronic Components, 219-4MST

40 1 U2 IC., LT1807CMS8 MSOP-8 Linear Tech., LT1807CMS8#TRPBF

41 1 U4 IC., 24LC025 TSSOP-8 Microchip., 24LC025-T/ST

42 1 U5 IC., LT1790ACS6-4.096, SOT23-6 Linear Tech., LT1790ACS6-4.096#PBF

43 1 U6 IC., LT1763CS8-1.8, SO8 Linear Tech., LT1763CS8-1.8#PBF

44 2 U9, U7 IC., LT1763CS8, SO8 Linear Tech., LT1763CS8#PBF

45 1 U8 IC., LT1763CS8-5, SO8 Linear Tech., LT1763CS8-5#PBF

46 1 U10 IC., LT1964ES5-SD, SOT23-5 Linear Tech., LT1964ES5-SD#PBF

47 1 U12 IC., NL17SZ74, US8 On SEMI., NL17SZ74USG

48 1 U13 IC., NC7ST04P5X SC70-5 Fairchild, NC7ST04P5X

49 1 U14 IC., EPM240GT100C5N TQFP-100 Altera Corp., EPM240GT100C5N

50 1 U15 IC., NC7SZ04P5X SC70-5 Fairchild, NC7SZ04P5X

51 1 U16 IC., NC7SVU04P5X SC70-5 Fairchild, NC7SVU04P5X

52 4 (Stand-Off) Stand-Off, Nylon 0.25” Keystone, 8831(Snap On)

53 1 Fab, Printed Circuit Board Demo Circuit 1501A

1 DC1501A-A

1 1 DC1501A General BOM

2 1 U1 IC., LTC2393CLX-16, LQFP-7X7, 48-Pin Linear Tech., LTC2393CLX-16#PBF

DC1501A-B

1 1 DC1501A General BOM

2 1 U1 IC., LTC2392CLX-16 LQFP-7X7, 48-Pin Linear Tech,. LTC2392CLX-16#PBF

DC1501A-C

1 1 DC1501A-C General BOM

2 1 U1 IC., LTC2391CLX-16 LQFP-7X7, 48-Pin Linear Tech,. LTC2391CLX-16#PBF

PARTS LIST

dc1501A

DEMO MANUAL DC1501A

SCHEMATIC DIAGRAM

FLT

EXT_VCM

80MHz MAX

CLK

3.3VPP

AIN+

0V - 4.096V

AIN-

0V - 4.096V

-INPUT

2.048V

GND

-AIN

VCM EXT

INT

REFSNS

GND

REFIN

EXT ADC

REFOUT

REFIN GND

CSL

RDL

HIGH

LOW

-COUPLING

AC DC

+COUPLING

SER_PARL

OB/2CL

VREF

+3.3V

+5V

+3.3V

BUSY

D17

D16

D15

D14

D13/SCLK

D12/SDOUT

D11/SDIN

D10

BYTESWAP_D1/A1

GND_D0/A0

OB2C

SER_PARL_MODE0

GND_MODE1

CLK

CNVSTL

VCM

VREF

VCM_BIAS

SER_PARL 16_18L

DB0

DB1

DB2

DB3

DB4

DB5

DB6

DB7

DB8

DB13

DB12

DB11

DB9

DB10

DB14

DB15

CLKOUT

CNVST_33 DB16

DB17

SIZE

DATE:

IC NO.

REV

SHEET OF

TITLE:

CONTRACT NO.

APPROVALS

PCB DES.

ENG.

TECHNOLOGY

Fax: (408)434-0507

Milpitas, CA 95035

Phone: (408)432-1900

1630 McCarthy Blvd.

LTC Condential-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.

DEMO CIRCUIT 1501A

Thursday, October 29, 2009

K. TRAN

G. HOOVER

LOW NOISE HIGH SPEED SAR ADC FAMILY

LTC23XXCLX FAMILY

SCALE: NONE

SIZE

DATE:

IC NO.

TITLE:

CONTRACT NO.

APPROVALS

PCB DES.

ENG.

TECHNOLOGY

Fax: (408)434-0507

Milpitas, CA 95035

Phone: (408)432-1900

1630 McCarthy Blvd.

LTC Condential-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.

DEMO CIRCUIT 1501A

K. TRAN

G. HOOVER

LTC23XXCLX FAMILY

SCALE: NONE

SIZE

DATE:

IC NO.

TITLE:

CONTRACT NO.

APPROVALS

PCB DES.

ENG.

TECHNOLOGY

Fax: (408)434-0507

Milpitas, CA 95035

Phone: (408)432-1900

1630 McCarthy Blvd.

LTC Condential-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.

DEMO CIRCUIT 1501A

K. TRAN

G. HOOVER

LTC23XXCLX FAMILY

SCALE: NONE

REVISION HISTORY

DESCRIPTION DATE

APPROVED

ECO REV

G. HOOVERPRODUCTION

210-29-09

ECO REV

PRODUCTION

210-29-09

R10

4.99K

R10

R38

OPT

R38

OPT

R47 300

OPT

C55

OPT

C55

OPT

R30

1.00K

R30

1.00K

R19

1.00K

R19

1.00K

J20

J7J7

R52 49.9

0402

R52 49.9

0402

R53

opt

R53

opt

R55

OPT

R55

OPT

U15

NC7SZ04P5X

U15

NC7SZ04P5X

R54

10K

R54

10K

C11

0.1uF

C11

0.1uF

R18

1.00K

R18

1.00K

C36

1uF

C36

1uF

C34

0.1uF

C34

0.1uF

C33

1.0uF

C33

1.0uF

C50

0.1uF

C50

0.1uF

U12

NL17SZ74

U12

NL17SZ74

CP 1

GND

CLR

PR 7

VCC 8

J16

BNC

J16

BNC

C35

0.1uF

C35

0.1uF

R49

C37

10uF

C37

10uF

J11J11

R48 300

U2A

LT1807CMS8

U2A

LT1807CMS8

+IN

-IN

OUT 1

J21J21

OPT

U16

NC7SVU04P5X

U16

NC7SVU04P5X

3201S-40G1

122

344

566

788

910 10

11 12 12

13 14 14

15 16 16

17 18 18

19 20 20

21 22 22

23 24 24

25 26 26

27 28 28

29 30 30

31 32 32

33 34 34

35 36 36

37 38 38

39 40 40

R17

49.9

1206

R17

49.9

1206

C53

10uF

C53

10uF U4

24LC025

A0 1

A1 2

A2 3

VSS

SDA 5

SCL 6

WP 7

VCC 8

C51

10uF

C51

10uF

U1A

SER_PARL_MODE0

GND_MODE1

OB/2CL

D0/A0 7

D1/A1 8

D2 9

D3 10

D4 11

D5 12

D6 13

D7 14

D8 15

D9 16

D10 21

D11/SDIN 22

D12/SDOUT 23

D13/SCLK 24

D14 25

D15 26

D16 27

D17 28

BUSY 29

RDL

CSL

RESET

CNVSTL 34

REFOUT 37

REFIN 38

REFSENSE 39

-IN

+IN

VCM

R45 300

4.99K

C32

0.1uF

C32

0.1uF

C52

OPT

C52

OPT

R37

1.00K

R37

1.00K

R11 1K

301

R40

10K

R40

10K

R50

opt

R50

opt

R20

2200pF

1206

NP0

2200pF

1206

NP0

U2B

LT1807CMS8

U2B

LT1807CMS8

-IN

OUT 7

+IN

249

R46 300

J17

BNC

J17

BNC

R43

10K

R43

10K

R22

C39

OPT

C39

OPT

R28

4.99K

R36

OPT

R36

OPT

C41

1uF

C41

1uF

301

R51 49.9

0402

R51 49.9

0402

C38

0.1uF

C38

0.1uF

C27

0.1uF

C27

0.1uF

R12 1K

301

C10

10uF

C10

10uF

U13

NC7ST04P5X

U13

NC7ST04P5X

R29

OPT

R29

OPT

249

R42

10K

R42

10K

J18

BNC

J18

BNC

J2J2

E1E1

LT1790ACS6-4.096

GND

Vin

4Vout 6

C54

OPT

C54

OPT

1234

SW1

219-4MST

1234

SW1

219-4MST

J6J6

R41

10K

R41

10K

Msps

J2 SHUNT

FULLY DIFFERENTIAL

YES

-A

ASSY U1

LTC2393CLX-16

BITS

0.5

-B LTC2392CLX-16 16

0.25

-C LTC2391CLX-16 16

-AIN

dc1501A

DEMO MANUAL DC1501A

SCHEMATIC DIAGRAM

D D

C C

A A

+9V/+10VIN

+1.8V

+3.3V

+5V

V+

-9V/-10VIN V-

OPAMP

VCCINT

VCCIO

ADC_LOGIC

GND

CNTRL

POWER

VCCIO

+3.3V +2.5V

V+

V-

+5V +3.3V

+9V_IN

+1.8V

+3.3V

+5V

V+

-9V_IN V-

+3.3V +1.8V

+3.3V

D14

D13/SCLK

D15

D16

BUSY

D11/SDIN

D17

D10

D12/SDOUT

BYTESWAP_D1/A1

GND_D0/A0

SER_PARL_MODE0

OB2C

GND_MODE1

SER_PARL

16_18L

DB0

DB8

DB14

DB1

DB10

DB6

DB13

DB12

DB5

DB7

DB11

CLKOUT

DB15

DB4

DB2

DB9

DB3

CLK

DEV_OE

DEV_CLRN

CNVST_33

DB16

DB17

SIZE

DATE:

IC NO.

REV

SHEET OF

TITLE:

CONTRACT NO.

APPROVALS

PCB DES.

ENG.

TECHNOLOGY

Fax: (408)434-0507

Milpitas, CA 95035

Phone: (408)432-1900

1630 McCarthy Blvd.

LTC Condential-For Customer Use Only

CUSTOMER NOTICE

LINEAR TECHNOLOGYHAS 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.

DEMO CIRCUIT 1501A

Thursday, October 29, 2009

K. TRAN

G. HOOVER

LOW NOISE HIGH SPEED SAR ADC FAMILY

LTC23XXCLX FAMILY

SCALE: NONE

SIZE

DATE:

IC NO.

REV

SHEET OF

TITLE:

CONTRACT NO.

APPROVALS

PCB DES.

ENG.

TECHNOLOGY

Fax: (408)434-0507

Milpitas, CA 95035

Phone: (408)432-1900

1630 McCarthy Blvd.

LTC Condential-For Customer Use Only

CUSTOMER NOTICE

LINEAR TECHNOLOGYHAS 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.

DEMO CIRCUIT 1501A

Thursday, October 29, 2009

K. TRAN

G. HOOVER

LOW NOISE HIGH SPEED SAR ADC FAMILY

LTC23XXCLX FAMILY

SCALE: NONE

SIZE

DATE:

IC NO.

REV

SHEET OF

TITLE:

CONTRACT NO.

APPROVALS

PCB DES.

ENG.

TECHNOLOGY

Fax: (408)434-0507

Milpitas, CA 95035

Phone: (408)432-1900

1630 McCarthy Blvd.

LTC Condential-For Customer Use Only

CUSTOMER NOTICE

LINEAR TECHNOLOGYHAS 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.

DEMO CIRCUIT 1501A

Thursday, October 29, 2009

K. TRAN

G. HOOVER

LOW NOISE HIGH SPEED SAR ADC FAMILY

LTC23XXCLX FAMILY

SCALE: NONE

REVISION HISTORY

DESCRIPTION DATEAPPROVEDECO REV

G. HOOVER

PRODUCTION

210-29-09

REVISION HISTORY

DESCRIPTION DATEAPPROVEDECO REV

G. HOOVER

PRODUCTION

210-29-09

REVISION HISTORY

DESCRIPTION DATEAPPROVEDECO REV

G. HOOVER

PRODUCTION

210-29-09

C26

47uF

1210

16V

C26

47uF

1210

16V

J13J13

LT1763CS8-1.8

OUT 1

SEN 2

GND

BYP 4

SHDN

GND

C29

0.1uF

C29

0.1uF

C14

10uF

10V

C14

10uF

10V

C31

0.1uF

C31

0.1uF

C44

0.1uF

C44

0.1uF

C23

1uF

16V

C23

1uF

16V

U10

LT1964ES5-SD

U10

LT1964ES5-SD

GND

1ADJ 4

SHDN

2OUT 5

U14B

EPM240T

U14B

EPM240T

IO26 26

IO27 27

IO28 28

IO29 29

IO30 30

IO33 33

IO34 34

IO35 35

IO36 36

IO37 37

IO38 38

IO39 39

IO40 40

IO41 41

IO42 42

IO47 47

IO48 48

IO49 49

IO50 50

C25

1uF

16V

C25

1uF

16V

E9E9

LT1763CS8-5

OUT 1

SEN 2

GND

BYP 4

SHDN

GND

E4E4

D1D1

C42

0.1uF

C42

0.1uF

C48

0.1uF

C48

0.1uF

R14

1.00K

R14

1.00K

C24

1uF

16V

C24

1uF

16V

C13

10uF

10V

C13

10uF

10V

R33 1K

1uF

C47

0.1uF

C47

0.1uF

C19

0.01uF

C19

0.01uF

C16

1uF

16V

C16

1uF

16V

E8E8

C40

4.7uF

C40

4.7uF

C18

10uF

C18

10uF

JTAGJTAG

10 9

R16

1.00K

R16

1.00K

E7E7

D10

D13D13

C22

10uF

C22

10uF

D16D16

R24

1.0

R24

1.0

U14C

EPM240T

U14C

EPM240T

IO51 51

IO52 52

IO53 53

IO54 54

IO55 55

IO56 56

IO57 57

IO58 58

IO61 61

IO66 66

IO67 67

IO68 68

IO69 69

IO70 70

IO71 71

IO72 72

IO73 73

IO74 74

IO75 75

D6D6

D9D9

D12D12

D15D15

D8D8

D11D11

D14

D17

U14F

EPM240T

U14F

EPM240T

VCCINT

VCCIO1

VCCIO2

VCCIO1

VCCIO2

GND 10

GND 11

GND 32

GND 46

GND 60

GND 93

GND 65

GND 79

U14E

EPM240T

U14E

EPM240T

GCLK0

GCLK1

GCLK2

GCLK3

DEV_OE

DEV_CLRN

TMS

TDI

TCK

TDO

R26

1.54K

R26

1.54K

C45

0.1uF

C45

0.1uF

D5D5

C28

10uF

C28

10uF

U2C

LT1807CMS8

U2C

LT1807CMS8

V-

4V+ 8

C12

1uF

16V

C12

1uF

16V

U1B

OGND

GND

AVP/AVL 47

AVP 46

AVP 45

AVP 40

AVP 2

DVP 19

DVP/DVL 3

OVP 18

GND

LT1763CS8

OUT 1

SEN 2

GND

BYP 4

SHDN

GND

D0D0

R15

3.92K

R15

3.92K

R13

3.92K

R13

3.92K

D3D3

C49

0.1uF

C49

0.1uF

R25

1.69K

R25

1.69K

D2D2

R32 1K

D4D4

R34

C17

0.01uF

C17

0.01uF

C43

0.1uF

C43

0.1uF

1uF

U14D

EPM240T

U14D

EPM240T

IO76 76

IO77 77

IO78 78

IO81 81

IO82 82

IO83 83

IO84 84

IO85 85

IO86 86

IO87 87

IO88 88

IO89 89

IO90 90

IO91 91

IO92 92

IO95 95

IO96 96

IO97 97

IO98 98

IO99 99

IO100 100

C15

0.01uF

C15

0.01uF

C21

0.01uF

C21

0.01uF

R31 1K

U14A

EPM240T

U14A

EPM240T

IO1 1

IO2 2

IO3 3

IO4 4

IO5 5

IO6 6

IO7 7

IO8 8

IO15 15

IO16 16

IO17 17

IO18 18

IO19 19

IO20 20

IO21 21

LT1763CS8

OUT 1

SEN 2

GND

BYP 4

SHDN

GND

C20

10uF

C20

10uF

1uF

R35

10K

R35

10K

R27

2.80K

R27

2.80K

C46

0.1uF

C46

0.1uF

BUSYBUSY

E5E5

C30

10uF

C30

10uF

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