Linear Technology DC1332B Guida rapida alla configurazione

dc1332bfa

DEMO MANUAL DC1332B

Description

LTC2631

Single 12-/10-/8-Bit I2C

VOUT DACs with Integrated

10ppm/°C Reference

Demonstration circuit 1332B features the LT C

2631, a

12-bit I2C DAC with 1LSB (max) INL error. This device

establishes a new benchmark for size and integration of

12-bit DACs and onboard reference.

The DC1332B may be connected directly to the target

application’s analog signals while using the DC590 USB

serial controller board and supplied software to measure L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and

QuikEval is a trademark of Linear Technology Corporation. All other trademarks are the property

of their respective owners.

BoarD photo

performance. After evaluating with Linear Technology’s

software, the digital signals can be connected to the end

application’s processor/controller for development of the

serial interface.

Design files for this circuit board are available at

http://www.linear.com/demo

Figure 1. DC1332B Connection Diagram

DAC

CONNECTIONS

I2C ADDRESS JUMPERS

RIBBON CABLE

TO DC590

CONTROLLER

dc1332b F01

Demo BoarD Variations

DEMO BOARD TYPE LTC2631 VARIATION RESOLUTION (BITS) POWER-UP FULL-SCALE

DC1332B-A LTC2631ACTS8-LM12 12 Mid-Scale 2.5V

DC1332B-B LTC2631ACTS8-LZ12 12 Zero 2.5V

DC1332B-C LTC2631ACTS8-HM12 12 Mid-Scale 4.096V

DC1332B-D LTC2631ACTS8-HZ12 12 Zero 4.096V

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dc1332bfa

DEMO MANUAL DC1332B

Quick start proceDure

1. ConnecttheDC1332BtoaDC590USBserialcontroller

using the supplied 14-conductor ribbon cable.

2. Connect the DC590 to the host PC with a standard

USB A/B cable.

3. Run the QuikEval™ evaluation software supplied

with the DC590 or download it from:

www.linear.com/software. The correct program will

be loaded automatically.

Options are available to display the DAC output in voltage,

hex code, or decimal count. Additionally, the reference

voltage may be changed to reflect an actual measured

value, such that the output voltage matches the theoreti-

cal output voltage. The reference mode may be changed

from internal reference to external reference.

Features may be periodically added to the software. See

the software’s help menu for the latest information.

Figure 2. QuikEval Software

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dc1332bfa

DEMO MANUAL DC1332B

harDware setup

JUMPERS

CA0: This sets the I2C address of the LTC2631. These

should be set to 1 (VCC) by default.

CA1/REF_SEL: On the B and D versions of the demo board,

this is used to determine the I2C address of the LTC2631.

On the A and C versions of the demo board, this is used

to determine the reference input.

ANALOG CONNECTIONS

DAC outputs are provided on the row of turret posts at

the edge of the board.

GROUNDING AND POWER CONNECTIONS

Power (VCC): Normally, the DC1332B is powered by the

DC590 controller. VCC can be supplied to the 5V turret,

howeverthe power supply on the DC590 must be disabled!

Refer to the DC590 Quick Start Guide for more details on

this mode of operation.

Grounding: Three ground posts are provided.

parts List

ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER

DC1332B Required Circuit Components

1 2 C1, C2 CAP., X7R, 0.1µF, 16V, 10%, 0603 AVX, 0603YC104KAT

2 1 J1 HEADER, 2×7 PIN, 0.079" MOLEX, 87831-1420

3 3 R1, R2, R3 RES., CHIP, 4.99k, 1/16W, 1%, 0603 VISHAY, CRCW06034K99FKEA

4 1 U2 IC, 24LC025ST, TSSOP MICROCHIP, 24LC025-I/ST

Hardware: For Demo Board Only

1 6 E1-E6 TESTPOINT, TURRET, 0.095" MILL-MAX, 2501-2-00-80-00-00-07-0

2 2 JP1, JP2 0.1" SINGLE ROW HEADER, 3-PIN SAMTEC, TSW-103-07-L-S

3 2 JP1, JP2 SHUNT, 1" BLK SAMTEC, SNT-100-BK-G

DC1332B-A

5 1 U1 IC, LTC2631ACTS8-LM12#PBF, TSOT-23 LINEAR TECHNOLOGY, LTC2631ACTS8-LM12#PBF

DC1332B-B

5 1 U1 IC, LTC2631ACTS8-LZ12#PBF, TSOT-23 LINEAR TECHNOLOGY, LTC2631ACTS8-LZ12#PBF

DC1332B-C

5 1 U1 IC, LTC2631ACTS8-HM12#PBF, TSOT-23 LINEAR TECHNOLOGY, LTC2631ACTS8-HM12#PBF

DC1332B-D

5 1 U1 IC, LTC2631ACTS8-HZ12#PBF, TSOT-23 LINEAR TECHNOLOGY, LTC2631ACTS8-HZ12#PBF

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dc1332bfa

DEMO MANUAL DC1332B

reVision history

BOARD REV DATE DESCRIPTION PAGE NUMBER

B 10/13 Add C3 All

(Revision history begins at Rev B)

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dc1332bfa

DEMO MANUAL DC1332B

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 3. LTC2631 Schematic Diagram

schematic Diagram

D D

C C

B B

A A

HDR2X7-079-MOLEX

CA1/REF_SEL

GND

VCC

CA0

GND

VCC

-B

LTC2631ACTS8 - HZ12

LTC2631ACTS8 - HM12

-A LTC2631ACTS8 - LM12

Assy Table

-D

-C

LTC2631ACTS8 - LZ12

LTC PART#

SIZE

SCALE:

CAGE CODE

DWG NO

REV

SHEET OF

FILENAME:

TITLE

CONTRACT NO.

APPROVALS

DATE

DRAWN

CHECKED

APPROVED

ENGINEER

DESIGNER

TECHNOLOGY

1630 McCarthy Blvd.

Milpitas, CA 95035

Phone: (408)432-1900

Fax: (408)434-0507

THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND

SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.

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.

CUSTOMER NOTICE

DC1332B-A/B/C/D

Thursday, October 10, 2013

HELEN 9-3-13

Leo Chen 9-3-13

Single 12/10/8-Bit I2C Vout DAC

LTC2631ACTS8-LM12/LZ12/HM12/HZ12

SIZE

SCALE:

CAGE CODE

DWG NO

REV

SHEET OF

FILENAME:

TITLE

CONTRACT NO.

APPROVALS

DATE

DRAWN

CHECKED

APPROVED

ENGINEER

DESIGNER

TECHNOLOGY

1630 McCarthy Blvd.

Milpitas, CA 95035

Phone: (408)432-1900

Fax: (408)434-0507

THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND

SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.

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.

CUSTOMER NOTICE

DC1332B-A/B/C/D

Thursday, October 10, 2013

HELEN 9-3-13

Leo Chen 9-3-13

Single 12/10/8-Bit I2C Vout DAC

LTC2631ACTS8-LM12/LZ12/HM12/HZ12

SIZE

SCALE:

CAGE CODE

DWG NO

REV

SHEET OF

FILENAME:

TITLE

CONTRACT NO.

APPROVALS

DATE

DRAWN

CHECKED

APPROVED

ENGINEER

DESIGNER

TECHNOLOGY

1630 McCarthy Blvd.

Milpitas, CA 95035

Phone: (408)432-1900

Fax: (408)434-0507

THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND

SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.

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.

CUSTOMER NOTICE

DC1332B-A/B/C/D

Thursday, October 10, 2013

HELEN 9-3-13

Leo Chen 9-3-13

Single 12/10/8-Bit I2C Vout DAC

LTC2631ACTS8-LM12/LZ12/HM12/HZ12

E4 VOUT

JP1JP1

4.99K

E2 REF

E6 GND

J1J1

VUNREG 1

5V 2

GND

SCK/SCL 4

MISO 5

CS 6

MOSI/SDA 7

GND

EESDA 9

EEVCC 10

EESCL 11

EEGND 12

GND

NC 14

0.1uF

4.99K

0.1uF

LTC2631

CA0

SDA

SCL

VOUT 7

GND

REF 6

CA1

VCC 5

4.99K

SDASDA

0.33uF

SCLSCL

E5 GND

E1 VCC

E3 GND

Array

EPPROM

U2 24LC025-I/ST

Array

EPPROM

U2 24LC025-I/ST

SDA

SCL

WP 7

GND

VCC

A2 3

A1 2

A0 1

JP2JP2

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dc1332bfa

DEMO MANUAL DC1332B

Linear Technology Corporation

1630 McCarthy Blvd., Milpitas, CA 95035-7417

(408) 432-1900 ●FAX: (408) 434-0507 ●www.linear.com

 LINEAR TECHNOLOGY CORPORATION 2013

LT 1013 REV A • PRINTED IN USA

DEMONSTRATION BOARD IMPORTANT NOTICE

Linear Technology Corporation (LT C ) provides the enclosed product(s) under the following AS IS conditions:

This demonstration board (DEMO BOARD) kit being sold or provided by Linear Technology is intended for use for ENGINEERING DEVELOPMENT

OR EVALUATION PURPOSES ONLY and is not provided by LT C for commercial use. As such, the DEMO BOARD herein may not be complete

in terms of required design-, marketing-, and/or manufacturing-related protective considerations, including but not limited to product safety

measures typically found in finished commercial goods. As a prototype, this product does not fall within the scope of the European Union

directive on electromagnetic compatibility and therefore may or may not meet the technical requirements of the directive, or other regulations.

If this evaluation kit does not meet the specifications recited in the DEMO BOARD manual the kit may be returned within 30 days from the date

of delivery for a full refund. THE FOREGOING WARRANTY IS THE EXCLUSIVE WARRANTY MADE BY THE SELLER TO BUYER AND IS IN LIEU

OF ALL OTHER WARRANTIES, EXPRESSED, IMPLIED, OR STATUTORY, INCLUDING ANY WARRANTY OF MERCHANTABILITY OR FITNESS

FOR ANY PARTICULAR PURPOSE. EXCEPT TO THE EXTENT OF THIS INDEMNITY, NEITHER PARTY SHALL BE LIABLE TO THE OTHER FOR

ANY INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES.

The user assumes all responsibility and liability for proper and safe handling of the goods. Further, the user releases LT C from all claims

arising from the handling or use of the goods. Due to the open construction of the product, it is the user’s responsibility to take any and all

appropriate precautions with regard to electrostatic discharge. Also be aware that the products herein may not be regulatory compliant or

agency certified (FCC, UL, CE, etc.).

No License is granted under any patent right or other intellectual property whatsoever. LT C assumes no liability for applications assistance,

customer product design, software performance, or infringement of patents or any other intellectual property rights of any kind.

LT C currently services a variety of customers for products around the world, and therefore this transaction is not exclusive.

Please read the DEMO BOARD manual prior to handling the product. Persons handling this product must have electronics training and

observe good laboratory practice standards. Common sense is encouraged.

This notice contains important safety information about temperatures and voltages. For further safety concerns, please contact a LT C applica-

tion engineer.

Mailing Address:

Linear Technology

1630 McCarthy Blvd.

Milpitas, CA 95035

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