Linear Technology DC1332B Guide de configuration rapide
1
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
Downloaded from Arrow.com.Downloaded from Arrow.com.
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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
Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.
5
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
5
5
4
4
3
3
2
2
1
1
D D
C C
B B
A A
HDR2X7-079-MOLEX
CA1/REF_SEL
GND
VCC
CA0
GND
VCC
*
U1
-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
1
DC1332B-A/B/C/D
Thursday, October 10, 2013
11
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
1
DC1332B-A/B/C/D
Thursday, October 10, 2013
11
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
1
DC1332B-A/B/C/D
Thursday, October 10, 2013
11
HELEN 9-3-13
Leo Chen 9-3-13
Single 12/10/8-Bit I2C Vout DAC
LTC2631ACTS8-LM12/LZ12/HM12/HZ12
E4 VOUT
E4 VOUT
JP1JP1
1
2
3
R2
4.99K
R2
4.99K
E2 REF
E2 REF
E6 GND
E6 GND
J1J1
VUNREG 1
5V 2
GND
3
SCK/SCL 4
MISO 5
CS 6
MOSI/SDA 7
GND
8
EESDA 9
EEVCC 10
EESCL 11
EEGND 12
GND
13
NC 14
C1
0.1uF
C1
0.1uF
R1
4.99K
R1
4.99K
C2
0.1uF
C2
0.1uF
U1
LTC2631
U1
LTC2631
CA0
1
SDA
3
SCL
2
VOUT 7
GND
4
REF 6
CA1
8
VCC 5
R3
4.99K
R3
4.99K
SDASDA
C3
0.33uF
C3
0.33uF
SCLSCL
E5 GND
E5 GND
E1 VCC
E1 VCC
E3 GND
E3 GND
Array
EPPROM
U2 24LC025-I/ST
Array
EPPROM
U2 24LC025-I/ST
SDA
5
SCL
6
WP 7
GND
4
VCC
8
A2 3
A1 2
A0 1
JP2JP2
1
2
3
Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.
6
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
Copyright © 2004, Linear Technology Corporation
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