DC1338A [Linear]

LTC2990 I2C Temperature Voltage and Current Monitor; LTC2990的I2C温度电压和电流监视器


型号：	DC1338A
厂家：	Linear
描述：	LTC2990 I2C Temperature Voltage and Current Monitor LTC2990的I2C温度电压和电流监视器监视器
文件：	总6页 (文件大小：716K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

DEMO MANUAL DC1338A

LTC2990 I C Temperature

Voltage and Current Monitor

DESCRIPTION

Demonstration circuit 1338A features the LTC^®2990, a

highperformancetemperature, voltageandcurrentmoni-

DC590 USB Serial Controller board and supplied software

to measure performance. Exposed ground planes allow

proper grounding to prototype circuitry. After evaluating

tor that uses I C for communication. It offers submillivolt

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

ment accuracy.

with Linear Technology’s software, the I C lines can be

connected to the end application’s processor/controller

for development of the serial interface.

DC1338A is a member of Linear Technology’s QuikEval™

familyofdemonstrationboards.Itisdesignedtoalloweasy

evaluation of the LTC2990 and may be connected directly

to the target application’s analog signals while using the

Design ﬁles for this circuit board are available at

http://www.linear.com/demo

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.

INPUTS

RIBBON CABLE TO DC590

CONTROLLER

Figure 1. Proper Measurement Equipment Setup.

Power Is Obtained from DC590

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DEMO MANUAL DC1338A

QUICK START PROCEDURE

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.

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

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DEMO MANUAL DC1338A

HARDWARE SETUP

Connection to DC590 Serial Controller

ADR0, ADR1: These jumpers are used to select the I C

address for the LTC2990. When used with QuikEval, the

correct address should also be selected from within the

software.

J1 is the power and digital interface connector. Connect

to DC590 serial controller with supplied 14 conductor

ribbon cable.

Analog Connections

Jumper Settings

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

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

VOLT and TEMP. VOLT connects the corresponding input

ontheLTC2990withthecorrespondingturretforanexter-

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.

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

is 300mV with a common mode range of 0 to V . 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 V 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 : 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.

V : Unregulated 10V coming from the DC590B. Turret

provided for testing purposes only. Presence of 10V

indicates proper connection of DC590B.

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DEMO MANUAL DC1338A

PARTS LIST

ITEM QUANTITY REFERENCE DESIGNATOR

DESCRIPTION

MANUFACTURER’S PART NUMBER

Required Circuit Components:

C2, C1

C4, C3

CAP, X7R 0.1µF 25V 10%

CAP, NPO 470pF 25V 10%

AVX, 06033C104KAT2A

AVX, 06033A471KAT2A

E1, E2, E3, E4, E5, E6, E7, E8 TURRET, TESTPOINT

MILL MAX, 2308-2-00-80-00-00-07-0

SAMTEC, TMM-103-02-L-S

JP1, JP2, JP3, JP4, JP5,

JP6, JP7

HEADERS, 3 PINS 2mm CTRS

HEADERS, 14PIN 2mm CTRS

TRANSISTOR, PNP

MOLEX, 87831-1420

ZETEX, FMMT3906

TRANSISTOR, NPN

ZETEX, FMMT3904

R1, R2

RES, CHIP 4.99k 0.06W 1%

IC, TEMP, VOLT, CURR MONITOR

IC, SERIAL EEPROM

VISHAY, CRCW04024K99FKED

LINEAR TECHNOLOGY, LTC2990CMS

MICROCHIP, 24LC025-I/ST

SAMTEC, 2SN-BK-G

XJP1, XJP2 ,XJP3, XJP4,

XJP5 TO XJP7

SHUNT, 2mm CTRS

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DEMO MANUAL DC1338A

SCHEMATIC DIAGRAM

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

However,noresponsibilityisassumedforitsuse.LinearTechnologyCorporationmakesnorepresenta-

tionthattheinterconnectionofitscircuitsasdescribedhereinwillnotinfringeonexistingpatentrights.

DEMO MANUAL DC1338A

DEMONSTRATION BOARD IMPORTANT NOTICE

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

Thisdemonstrationboard(DEMOBOARD)kitbeingsoldorprovidedbyLinearTechnologyisintendedforuseforENGINEERINGDEVELOPMENT

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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LT 1110 • PRINTED IN USA

LinearTechnology Corporation

1630 McCarthy Blvd., Milpitas, CA 95035-7417

●

 LINEAR TECHNOLOGY CORPORATION 2010

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

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