Datasheet > MAX1368ECM

MAX1368ECM

更新时间： 2024-11-16 02:52:11

品牌	Logo	应用领域
美信 - MAXIM		微控制器
页数	文件大小	规格书
36页	937K
描述
Microcontroller-Interface, 4.5-/3.5-Digit Panel Meters with 4â20mA Output

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MAX1368ECM 数据手册

19-3977; Rev 0; 1/06

Microcontroller-Interface,

4.5-/3.5-Digit Panel Meters with 4–20mA Output

General Description

Features

The MAX1366/MAX1368 low-power, 4.5- and 3.5-digit,

panel meters feature an integrated sigma-delta analog-

to-digital converter (ADC), LED display drivers, voltage

digital-to-analog converter (DAC), and a 4–20mA (or 0

to 16mA) current driver.

♦ Microcontroller (µC)-Interface, Digital Panel Meter

20-Bit Sigma-Delta ADC

4.5-Digit Resolution (±±1,111 Count, MAꢀ±ꢁ33)

ꢁ.5-Digit Resolution (±±111 Count, MAꢀ±ꢁ36)

No Integrating/Autozeroing Capacitors

±00MΩ Input Impedance

The MAX1366/MAX1368’s analog input voltage range is

programmable to either 2ꢀ or 200mꢀ. The MAX1368

drives a 3.5-digit ( 1999 count) display and the

MAX1366 drives a 4.5-digit ( 19,999 count) display.

The ADC output directly drives the LED display as well

as the voltage DAC, which, in turn, drives the 4–20mA

(or 0 to 16mA) current-loop output.

±200mꢂ or ±2.000ꢂ Input Range

♦ LED Display

Common-Cathode 7-Segment LED Driver

Programmable LED Current (0 to 20mA)

2.5Hz Update Rate

In normal operation, the 0 to 16mA/4–20mA current-

loop output follows the 2ꢀ or 200mꢀ analog input to

drive remote panel-meter displays, data loggers, and

other industrial controllers. For added flexibility, the

MAX1366/MAX1368 allow direct access to the ADC

result, DAC output, and the ꢀ/I converter input.

♦ Output DAC and Current Driver

±±5-Bit DAC ꢃith ±4-Bit Linear ꢂ/I Converter

Selectable 0 to ±3mA or 4–20mA Current Output

Unipolar/Bipolar Modes

±50µA ꢄero Scale, ±40ppmꢅS/ꢆC (typ)

±0.5ꢇ ꢈain Error, ±25ppmꢅS/ꢆC (typ)

Separate 7ꢂ to ꢁ0ꢂ Supply for Current-Loop

Output

The sigma-delta ADC does not require external preci-

sion integrating capacitors, autozero capacitors, crystal

oscillators, charge pumps, or other circuitry commonly

required in dual-slope ADC panel-meter circuits. On-

chip analog input and reference buffers allow direct

interface with high-impedance signal sources. Excellent

common-mode rejection and digital filtering provides

greater than 100dB rejection of simultaneous 50Hz and

60Hz line noise. Other features include data hold and

peak detection and overrange/underrange detection.

♦ 2.7ꢂ to 5.25ꢂ ADC/DAC Supply

♦ 4.75ꢂ to 5.25ꢂ ꢂ/I Converter Supply

♦ Internal 2.046ꢂ Reference or External Reference

♦ SPI™-/QSPI™-/MICROWIRE™-Compatible Serial

The MAX1366/MAX1368 require a 2.7ꢀ to 5.25ꢀ supply,

a 4.75ꢀ to 5.25ꢀ ꢀ/I supply, and a 7ꢀ to 30ꢀ loop sup-

ply. They are available in a space-saving (7mm x

7mm), 48-pin TQFP package and operate over the

extended (-40°C to +85°C) temperature range.

Interface

♦ 46-Pin, 7mm x 7mm TQꢅP Package

Ordering Information

Applications

Industrial Process Control

Automated Test Equipment

Data-Acquisition Systems

Digital Panel Meters

PART

TEMP RANꢈE

-40°C to +85°C

PIN-PACKAꢈE

48 TQFP

MAꢀ±ꢁ33ECM

MAꢀ±ꢁ36ECM

48 TQFP

Digital ꢀoltmeters

Selector Guide

Digital Multimeters

RESOLUTION

PART

PACKAꢈE CODE

(DIꢈITS)

Pin Configuration appears at end of data sheet.

MAX1366ECM

MAX1368ECM

C48-6

4.5

3.5

Typical Operating Circuits appear at end of data sheet.

SPI/QSPI are trademarks of Motorola, Inc.

MICROWIRE is a trademark of National Semiconductor Corp.

________________________________________________________________ Maxim Integrated Products

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at

1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

12 3 4 5 6 7...36

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与MAX1368ECM相关器件

型号	品牌	获取价格	描述	数据表
MAX1368ECM+	MAXIM	获取价格	Analog Circuit, 1 Func, CMOS, PQFP48, PLASTIC, QFP-48
MAX1368ECM+T	MAXIM	获取价格	Analog Circuit, 1 Func, CMOS, PQFP48, PLASTIC, QFP-48
MAX136C/D	MAXIM	获取价格	Low Power, 3Digit A/D Converter With Display
MAX136CJL	MAXIM	获取价格	Low Power, 3Digit A/D Converter With Display
MAX136CMH	MAXIM	获取价格	Analog-to-Digital Converter， 3-1/2-Digit
MAX136CMH+D	MAXIM	获取价格	ADC, Dual-Slope, 1 Func, 1 Channel, CMOS, PQFP44, ROHS COMPLIANT, MQFP-44
MAX136CMH+T	MAXIM	获取价格	A/D Converter, 1 Func, CMOS, PQFP44
MAX136CMH+TD	MAXIM	获取价格	暂无描述
MAX136CMH-D	MAXIM	获取价格	ADC, Dual-Slope, 1 Func, 1 Channel, CMOS, PQFP44, MQFP-44
MAX136CMH-TD	MAXIM	获取价格	ADC, Dual-Slope, 1 Func, 1 Channel, CMOS, PQFP44, MQFP-44

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