Linear Technology DC1338A Kurzanleitung zur Einrichtung

dc1338af

DEMO MANUAL DC1338A

DESCRIPTION

LTC2990 I2C Temperature

Voltage and Current Monitor

Demonstration circuit 1338A features the LTC

2990, a

high performance temperature, voltage and current moni-

tor that uses I2C for communication. It offers submillivolt

resolution and 1% current and 1°C temperature measure-

ment accuracy.

DC1338A is a member of Linear Technology’s QuikEval™

family of demonstration boards. It is designed to allow easy

evaluation of the LTC2990 and may be connected directly

to the target application’s analog signals while using the 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.

Figure 1. Proper Measurement Equipment Setup.

Power Is Obtained from DC590

DC590 USB Serial Controller board and supplied software

to measure performance. Exposed ground planes allow

proper grounding to prototype circuitry. After evaluating

with Linear Technology’s software, the I2C lines 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

RIBBON CABLE TO DC590

CONTROLLER

INPUTS

dc1338af

DEMO MANUAL DC1338A

QUICK START PROCEDURE

Connect DC1338A to a DC590 USB serial controller using

the supplied 14 conductor ribbon cable. Connect DC590

to host PC with a standard USB A/B cable. Run the evalu-

ation software supplied with DC590 or downloaded from

http://www.linear.com/software. The correct program

Figure 2. Software Screenshot

will be loaded automatically. Click the COLLECT button to

start reading the input voltage (COLLECT button becomes

PAUSE after collection has been initiated). Details on

software features are documented in the control panel’s

help menu.

dc1338af

DEMO MANUAL DC1338A

HARDWARE SETUP

Connection to DC590 Serial Controller

J1 is the power and digital interface connector. Connect

to DC590 serial controller with supplied 14 conductor

ribbon cable.

Jumper Settings

V1, V2, V3, V4: These jumpers can be toggled between

VOLT and TEMP. VOLT connects the corresponding input

on the LTC2990 with the corresponding turret for an exter-

nal input. TEMP connects the corresponding input to the

onboard FMMT3904 (V3 and V4) or the FMMT3906 (V1

and V2). Please note that the jumpers should be moved in

pairs, V1 and V2 should both be connected either to VOLT

or TEMP and V3 and V4 should also be both connected

to either VOLT or TEMP. Once set, the proper selection

should also be made inside the QuikEval software in the

mode box to reﬂect any changes made.

VCC:EXT allows the LTC2990 to be powered from an ex-

ternal supply of 2.9V to 5.5V, connected to the VCC EXT

and GND turrets. If set to INT, the LTC2990 is powered

by the attached DC590B.

ADR0, ADR1: These jumpers are used to select the I2C

address for the LTC2990. When used with QuikEval, the

correct address should also be selected from within the

software.

Analog Connections

Analog signal connections are made at turrets V1, V2, V3

and V4. Single-ended input range is 0 to VCC, differential

is ±300mV with a common mode range of 0 to VCC. When

connecting the board to an existing circuit the exposed

ground planes along the edges of the board may be used

to form a solid connection between grounds.

GND (2 locations): This turret is connected directly to the

internal ground planes.

VCC EXT: This turret allows the user to provide VCC to the

LTC2990. (2.9V to 5.5V)

V1, V2, V3, V4: These turrets are used to provide input

voltage to the monitor when the corresponding jumpers

are set to the VOLT position.

V+:Unregulated 10V coming from the DC590B. Turret

provided for testing purposes only. Presence of 10V

indicates proper connection of DC590B.

dc1338af

DEMO MANUAL DC1338A

PARTS LIST

ITEM QUANTITY REFERENCE DESIGNATOR DESCRIPTION MANUFACTURER’S PART NUMBER

Required Circuit Components:

1 2 C2, C1 CAP, X7R 0.1µF 25V 10% AVX, 06033C104KAT2A

2 2 C4, C3 CAP, NPO 470pF 25V 10% AVX, 06033A471KAT2A

3 8 E1, E2, E3, E4, E5, E6, E7, E8 TURRET, TESTPOINT MILL MAX, 2308-2-00-80-00-00-07-0

4 7 JP1, JP2, JP3, JP4, JP5,

JP6, JP7

HEADERS, 3 PINS 2mm CTRS SAMTEC, TMM-103-02-L-S

5 1 J1 HEADERS, 14PIN 2mm CTRS MOLEX, 87831-1420

6 1 Q1 TRANSISTOR, PNP ZETEX, FMMT3906

7 1 Q2 TRANSISTOR, NPN ZETEX, FMMT3904

8 2 R1, R2 RES, CHIP 4.99k 0.06W 1% VISHAY, CRCW04024K99FKED

9 1 U1 IC, TEMP, VOLT, CURR MONITOR LINEAR TECHNOLOGY, LTC2990CMS

10 1 U2 IC, SERIAL EEPROM MICROCHIP, 24LC025-I/ST

11 7 XJP1, XJP2 ,XJP3, XJP4,

XJP5 TO XJP7

SHUNT, 2mm CTRS SAMTEC, 2SN-BK-G

dc1338af

DEMO MANUAL DC1338A

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

However,noresponsibility isassumed foritsuse. LinearTechnologyCorporation makesno representa-

tion thatthe interconnection ofitscircuits asdescribedhereinwillnot infringeonexisting patentrights.

SCHEMATIC DIAGRAM

D D

C C

B B

A A

+5V

VUNREG



SCK/SCL

EEGND

EESDA

EESCL

EEVCC





REVISION HISTORY

DESCRIPTION DATE

APPROVED

ECO REV

 

REVISION HISTORY

DESCRIPTION DATE

APPROVED

ECO REV

 

REVISION HISTORY

DESCRIPTION DATE

APPROVED

ECO REV

 





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 

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TECHNOLOGY

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





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

Leo C.











 

 









TECHNOLOGY





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

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



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

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



Leo C.











 

 









TECHNOLOGY





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

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



































Leo C.







V4 C2

0.1uF

TP2

SDA

TP2

SDA

JP4

ADR0

JP4

ADR0

FMMT3906

VCC

EXT

VCC

EXT

JP7

TEMP

VOLT

JP7

TEMP

VOLT

TP1

SCL

TP1

SCL

J1J1

4.99K

GND

JP2

EXT

INT

VCC

JP2

EXT

INT

VCC

JP6

TEMP

VOLT

JP6

TEMP

VOLT

470pF

V+









SDA 6

ADR0 8

SCL 7

VCC 10

ADR1 9

GND 5

GND

FMMT3904

JP5

TEMP

VOLT

JP5

TEMP

VOLT

JP1

ADR1

JP1

ADR1

470pF

24LC025-I/ST

A0 1

A1 2

A2 3

VSS 4

VCC

SCL

SDA

4.99K

JP3

TEMP

VOLT

JP3

TEMP

VOLT

0.1uF

dc1338af

DEMO MANUAL DC1338A

Linear Technology Corporation

1630 McCarthy Blvd., Milpitas, CA 95035-7417

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

 LINEAR TECHNOLOGY CORPORATION 2010

LT 1110 • PRINTED IN USA

DEMONSTRATION BOARD IMPORTANT NOTICE

Linear Technology Corporation (LTC) 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 LTC 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 LTC 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. LTC assumes no liability for applications assistance,

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

LTC 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 LTC applica-

tion engineer.

Mailing Address:

Linear Technology

1630 McCarthy Blvd.

Milpitas, CA 95035

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