Rainbow-electronics MAX6920 Bedienungsanleitung PDF herunterladen

General Description

The MAX6920 is a 12-output, 76V, vacuum fluorescent

display (VFD) tube driver that interfaces a multiplexed

VFD tube to a VFD controller such as the

MAX6850–MAX6853 or to a microcontroller. The

MAX6920 is also ideal for driving either static VFD tubes

or telecom relays.

Data is inputted using an industry-standard 4-wire serial

interface (CLOCK, DATA, LOAD, BLANK) for compatibili-

ty with both industry-standard drivers and Maxim’s VFD

controllers.

For easy display control, the active-high BLANK input

forces all driver outputs low, turning the display off, and

automatically puts the MAX6920 into shutdown mode.

Display intensity may also be controlled by pulse-width

modulating the BLANK input.

The MAX6920 has a serial interface data output pin,

DOUT, allowing any number of devices to be cascaded

on the same serial interface.

The MAX6920 is available in a 20-pin SO package.

Maxim also offers VFD drivers with either 20

(MAX6921/MAX6931) or 32 outputs (MAX6922 and

MAX6932).

Applications

White Goods Industrial Weighing

Gaming Machines Security

Automotive Telecom

Avionics

Features

♦ 5MHz Industry-Standard 4-Wire Serial Interface

♦ 3V to 5.5V Logic Supply Range

♦ 8V to 76V Grid/Anode Supply Range

♦ Push-Pull CMOS High-Voltage Outputs

♦ Outputs can Source 40mA, Sink 4mA

Continuously

♦ Outputs can Source 75mA Repetitive Pulses

♦ Outputs can be Paralleled for Higher Current

Drive

♦ Any Output can be Used as a Grid or an Anode

Driver

♦ Blank Input Simplifies PWM Intensity Control

♦ Small 20-Pin SO Package

♦ -40°C to +125°C Temperature Range

MAX6920

12-Output, 76V, Serial-Interfaced

VFD Tube Driver

________________________________________________________________ Maxim Integrated Products 1

Ordering Information

19-3061; Rev 0; 10/03

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.

PART TEMP RANGE PIN-PACKAGE

MAX6920AWP -40°C to +125°C 20 Wide SO

MAX6920

DIN

CLK

LOAD

OUT0 – OUT11

VFD TUBE

VFDOUT

VFLOAD

VFCLK

BLANK

VFBLANK

120

GND

+60V+5V

100nF

µC

Typical Operating Circuit

TOP VIEW

DIN

OUT0

OUT1

OUT2

OUT3

OUT4

OUT5

LOAD

CLKGND

BLANK

OUT6

OUT7

OUT8

OUT9

OUT10

OUT11

DOUT

MAX6920AWP

Pin Configuration

1 2 3 4 5 6 7 8 9 10

VFD Tube Driver 1

Inhaltsverzeichnis

Seite 1 - VFD Tube Driver

General DescriptionThe MAX6920 is a 12-output, 76V, vacuum fluorescentdisplay (VFD) tube driver that interfaces a multiplexedVFD tube to a VFD control

Seite 2

MAX692012-Output, 76V, Serial-InterfacedVFD Tube DriverMaxim cannot assume responsibility for use of any circuitry other than circuitry entirely embod

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MAX692012-Output, 76V, Serial-InterfacedVFD Tube Driver2 _______________________________________________________________________________________ABSOLU

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MAX692012-Output, 76V, Serial-InterfacedVFD Tube Driver_______________________________________________________________________________________ 3ELECTR

Seite 5

MAX692012-Output, 76V, Serial-InterfacedVFD Tube Driver4 _______________________________________________________________________________________Typica

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MAX692012-Output, 76V, Serial-InterfacedVFD Tube Driver_______________________________________________________________________________________ 5PIN NA

Seite 7

MAX692012-Output, 76V, Serial-InterfacedVFD Tube Driver6 _______________________________________________________________________________________Detail

Seite 8

MAX692012-Output, 76V, Serial-InterfacedVFD Tube Driver_______________________________________________________________________________________ 7• DIN

Seite 9

MAX692012-Output, 76V, Serial-InterfacedVFD Tube Driver8 _______________________________________________________________________________________Since

Seite 10

MAX692012-Output, 76V, Serial-InterfacedVFD Tube Driver_______________________________________________________________________________________ 9This m

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Rainbow-electronics MAX6920 Bedienungsanleitung

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Inhaltsverzeichnis

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