Rainbow-electronics MAX5131 Bedienungsanleitung PDF herunterladen (Seite 1)

For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.

For small orders, phone 1-800-835-8769.

General Description

The MAX5130/MAX5131 are low-power, 13-bit, voltage-

output digital-to-analog converters (DACs) with an inter-

nal precision bandgap reference and output amplifier.

The MAX5130 operates on a single +5V supply with an

internal reference of +2.5V, and is capable of a +4.0955V

full-scale output. If necessary, the user can override the

on-chip, <10ppm/°C voltage reference with an external

reference. The MAX5131, operating on +3V, delivers its

+2.04775V full-scale output with an internal precision ref-

erence of +1.25V. Both devices draw only 500µA of sup-

ply current, which reduces to 3µA in power-down mode.

In addition, their power-up reset feature allows for a user-

selectable initial output state of either 0V or midscale and

minimizes output voltage glitches during power-up.

The serial interface is compatible with SPI™, QSPI™, and

MICROWIRE™, which makes the MAX5130/MAX5131

suitable for cascading multiple devices. Each DAC has a

double-buffered input organized as an input register fol-

lowed by a DAC register. A 16-bit shift register loads data

into the input register. The DAC register may be updated

independently or simultaneously with the input register.

Both devices are available in a 16-pin QSOP package

and are specified for the extended-industrial (-40°C to

+85°C) temperature range. For pin-compatible 14-bit

upgrades, see the MAX5170/MAX5172 data sheet;

for pin-compatible 12-bit versions, see the MAX5120/

MAX5121 data sheet.

Applications

Industrial Process Control

Automatic Test Equipment (ATE)

Digital Offset and Gain Adjustment

Motion Control

µP-Controlled Systems

Features

♦ Single-Supply Operation

+5V (MAX5130)

+3V (MAX5131)

♦ Full-Scale Output Range

+4.0955V (MAX5130)

+2.04775V (MAX5131)

♦ Built-In 10ppm/°C (max) Precision Bandgap

Reference

+2.5V (MAX5130)

+1.25V (MAX5131)

♦ Adjustable Output Offset

♦ SPI/QSPI/MICROWIRE-Compatible, 3-Wire Serial

Interface

♦ Pin-Programmable Shutdown Mode and Power-

Up Reset (0V or Midscale Output Voltage)

♦ Buffered Output Capable of Driving 5kΩ || 100pF

or 4–20mA Loads

♦ Space-Saving 16-Pin QSOP Package

♦ Pin-Compatible Upgrades to the 12-Bit

MAX5120/MAX5121

♦ Pin-Compatible 14-Bit Upgrades Available

(MAX5170/MAX5172)

MAX5130/MAX5131

+3V/+5V, 13-Bit, Serial Voltage-Output DACs

with Internal Reference

________________________________________________________________

Maxim Integrated Products

OS V

REFADJ

REF

AGND

UPO

DOUT

DGND

TOP VIEW

MAX5130

MAX5131

QSOP

OUT

RSTVAL

PDL

CLR

DIN

SCLK

19-1429; Rev 0; 2/99

Pin Configuration

Ordering Information

SPI and QSPI are trademarks of Motorola, Inc.

MICROWIRE is a trademark of National Semiconductor Corp.

PART

MAX5130AEEE

MAX5130BEEE

INL

(LSB)

±0.5

-40°C to +85°C

TEMP. RANGE

PIN-

PACKAGE

16 QSOP

16 QSOP ±1

MAX5131AEEE

MAX5131BEEE

±1

-40°C to +85°C

-40°C to +85°C 16 QSOP

16 QSOP ±2

1 2 3 4 5 6 ... 19 20

MAX5130/MAX5131 1

Inhaltsverzeichnis

Seite 1 - MAX5130/MAX5131

For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.For small orders, phone 1-800-835-8769.General Descript

Seite 2

MAX5130/MAX5131reference voltage. Use the circuits shown in Figure 3a(MAX5130) and Figure 3b (MAX5131) to achieve theseadjustments. Connect a 33nF cap

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Power-Down Lockout Input (PDL)The power-down lockout pin (PDL) disables shutdownwhen low. When in shutdown mode, a high-to-low tran-sition on PDL will

Seite 4

MAX5130/MAX5131The 16-bit input word may be sent in two 1-byte pack-ets (SPI-, MICROWIRE- and PIC16/PIC17-compatible),with CS low during this period.

Seite 5

Serial Data OutputThe contents of the internal shift register are outputserially on DOUT, allowing for daisy-chaining (seeApplications Information) of

Seite 6

MAX5130/MAX5131__________Applications InformationDefinitionsIntegral Nonlinearity (INL)Integral nonlinearity (Figure 8a) is the deviation of thevalues

Seite 7

Settling TimeThe settling time is the amount of time required from thestart of a transition until the DAC output settles to its newoutput value within

Seite 8

MAX5130/MAX5131Daisy-Chaining DevicesAny number of MAX5130/MAX5131s can be daisy-chained simply by connecting the serial data output pin(DOUT) of one

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