MAX1367 Maxim Integrated Products, MAX1367 Datasheet

MAX1367

Manufacturer Part Number

MAX1367

Description

(MAX1365 / MAX1367) Digit Panel Meters

Manufacturer

Maxim Integrated Products

Datasheet

1.MAX1367.pdf (25 pages)

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Part Number:

MAX1367ECM+

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MAX1367ECM+T

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The MAX1365/MAX1367 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.

The MAX1365/MAX1367’s analog input voltage range is

programmable to either ±2V or ±200mV. The MAX1367

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

MAX1365 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.

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

loop output follows the ±2V or ±200mV analog input to

drive remote panel-meter displays, data loggers, and

other industrial controllers. For added flexibility, the

MAX1365/MAX1367 allow direct access to the DAC

output and the V/I converter input.

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 provide

greater than 100dB rejection of simultaneous 50Hz and

60Hz line noise. Other features include data hold, peak

detection, and overrange/underrange detection.

The MAX1365/MAX1367 require a 2.7V to 5.25V supply,

a 4.75V to 5.25V V/I supply, and a 7V to 30V 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.

19-3889; Rev 1; 1/06

Pin Configuration appears at end of datasheet.

Typical Operating Circuits appear at end of datasheet.

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.

Automated Test Equipment

Data-Acquisition Systems

Digital Multimeters

Digital Panel Meters

Digital Voltmeters

Industrial Process Control

________________________________________________________________ Maxim Integrated Products

Stand-Alone, 4.5-/3.5-Digit Panel Meters

General Description

Applications

♦ Stand-Alone, Digital Panel Meter

♦ LED Display

♦ Output DAC and Current Driver

♦ 2.7V to 5.25V ADC/DAC Supply

♦ 4.75V to 5.25V V/I Converter Supply

♦ Internal 2.048V Reference or External Reference

♦ 48-Pin, 7mm x 7mm TQFP Package

MAX1365ECM

MAX1367ECM

MAX1365ECM

MAX1367ECM

20-Bit Sigma-Delta ADC

No Integrating/Autozeroing Capacitors

100MΩ Input Impedance

±200mV or ±2.000V Input Range

Common-Cathode 7-Segment LED Driver

Programmable LED Current (0 to 20mA)

2.5Hz Update Rate

±15-Bit DAC with 14-Bit Linear V/I Converter

Selectable 0 to 16mA or 4–20mA Current Output

Unipolar/Bipolar Modes

±50µA Zero Scale, ±40ppmFS/°C (typ)

±0.5% Gain Error, ±25ppmFS/°C (typ)

Separate 7V to 30V Supply for Current-Loop

Output

4.5-Digit Resolution (±19,999 Count, MAX1365)

3.5-Digit Resolution (±1999 Count, MAX1367)

PART

with 4–20mA Output

-40°C to +85°C

Ordering Information

TEMP RANGE

RESOLUTION

(DIGITS)

4.5

3.5

Selector Guide

Features

PIN-PACKAGE

48 TQFP

CODE

C48-6

PKG

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