Rainbow-electronics MAX5259 Bedienungsanleitung PDF herunterladen

General Description

The MAX5258/MAX5259 are +3V/+5V single-supply,

digital serial-input, voltage-output, 8-bit octal digital-to-

analog converters (DACs). Internal precision buffers

swing Rail-to-Rail

, and the reference input range

extends from ground to the positive supply. The +5V

(MAX5258) and the +3V (MAX5259) feature a 10µA

(max) shutdown mode.

The serial interface is double-buffered. A 16-bit input

shift register is followed by eight 8-bit input registers

and eight 8-bit DAC registers. The 16-bit serial word

consists of two “don’t care” bits, three address bits,

three control bits, and eight data bits. The input and

DAC registers can both be updated independently or

simultaneously with a single software command. The

asynchronous control input (LDAC) provides simultane-

ous updating of all eight DAC registers.

The interface is compatible with SPI™, QSPI™ (CPOL =

CPHA = 0 or CPOL = CPHA = 1), and MICROWIRE™.

A buffered digital data output allows daisy-chaining of

serial devices.

The MAX5258/MAX5259 are available in a 16-pin QSOP

package.

________________________Applications

Digital Gain and Offset Adjustment

Programmable Attenuators

Programmable Current Sources

Portable Instruments

Features

♦ +2.7V to +5.5V Single-Supply Operation

♦ Low Supply Current: 1.3mA

♦ Low-Power Shutdown Mode

0.54mA (MAX5259)

0.80mA (MAX5258)

♦ ±1LSB DNL (max)

♦ ±1LSB INL (max)

♦ Ground to V

Reference Input Range

♦ Output Buffer Amplifiers Swing Rail-to-Rail

♦ 10MHz Serial Interface, SPI, QSPI (CPOL = CPHA

= 0 or CPOL = CPHA = 1), and MICROWIRE-

Compatible

♦ Double-Buffered Registers for Synchronous

Updating

♦ Serial Data Output for Daisy-Chaining

♦ Ultra-Small 16-Pin QSOP Package

+3V/+5V, Low-Power, 8-Bit Octal DACs

with Rail-to-Rail Output Buffers

________________________________________________________________ Maxim Integrated Products 1

OUTB OUTC

OUTD

DOUT

DIN

SCLK

OUTH

OUTG

TOP VIEW

MAX5258

MAX5259

QSOP

OUTA

OUTE

OUTF

GND

REF

LDAC

Pin Configuration

19-1844; Rev 1; 4/01

Ordering Information

PART TEMP. RANGE PIN- PACK AGE

SU PPL Y

VO LT A G E

( V)

MAX5258EEE -40

C to +85

C 16 QSOP +5.0

MAX5259EEE -40

C to +85

C 16 QSOP +3.0

SPI and QSPI are trademarks of Motorola, Inc.

MICROWIRE is a trademark of National Semiconductor Corp.

MAX5258/MAX5259

Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.

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.

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MAX5258/MAX5259 1

Inhaltsverzeichnis

Seite 1 - MAX5258/MAX5259

General DescriptionThe MAX5258/MAX5259 are +3V/+5V single-supply,digital serial-input, voltage-output, 8-bit octal digital-to-analog converters (DACs)

Seite 2

MAX5258/MAX5259+3V/+5V, Low-Power, 8-Bit Octal DAC with Rail-to-Rail Output Buffers10 ________________________________________________________________

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MAX5258/MAX5259+3V/+5V, Low-Power, 8-Bit Octal DAC with Rail-to-Rail Output Buffers___________________________________________________________________

Seite 4

MAX5258/MAX5259+3V/+5V, Low-Power, 8-Bit Octal DAC with Rail-to-Rail Output Buffers12 ________________________________________________________________

Seite 5

MAX5258/MAX5259+3V/+5V, Low-Power, 8-Bit Octal DAC with Rail-to-Rail Output Buffers___________________________________________________________________

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MAX5258/MAX5259+3V/+5V, Low-Power, 8-Bit Octal DAC with Rail-to-Rail Output Buffers14 ________________________________________________________________

Seite 7

LDAC Operation (Hardware)LDAC is typically used in 4-wire interfaces (Figure 4).This command is level sensitive, and it allows asyn-chronous hardware

Seite 8

MAX5258/MAX5259+3V/+5V, Low-Power, 8-Bit Octal DAC with Rail-to-Rail Output Buffers16 ________________________________________________________________

Seite 9

Power SequencingThe voltage applied to REF should not exceed VDDatany time. If proper power sequencing is not possible,connect an external Schottky di

Seite 10

MAX5258/MAX5259Note: 1LSB = (VREF) ✕(28) = +VREF (1 / 256)____________________Chip Information TRANSISTOR COUNT: 13625PROCESS: BiCMOS+3V/+5V, Low-Powe

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MAX5258/MAX5259+3V/+5V, Low-Power, 8-Bit Octal DAC with Rail-to-Rail Output Buffers___________________________________________________________________

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MAX5258/MAX5259+3V/+5V, Low-Power, 8-Bit Octal DAC with Rail-to-Rail Output Buffers2 _________________________________________________________________

Seite 13

MAX5258/MAX5259+3V/+5V, Low-Power, 8-Bit Octal DACwith Rail-to-Rail Output BuffersMaxim cannot assume responsibility for use of any circuitry other th

Seite 14

MAX5258/MAX5259+3V/+5V, Low-Power, 8-Bit Octal DAC with Rail-to-Rail Output Buffers___________________________________________________________________

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MAX5258/MAX5259+3V/+5V, Low-Power, 8-Bit Octal DAC with Rail-to-Rail Output Buffers4 _________________________________________________________________

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MAX5258/MAX5259+3V/+5V, Low-Power, 8-Bit Octal DAC with Rail-to-Rail Output Buffers___________________________________________________________________

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MAX5258/MAX5259+3V/+5V, Low-Power, 8-Bit Octal DAC with Rail-to-Rail Output Buffers6 _________________________________________________________________

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MAX5258/MAX5259+3V/+5V, Low-Power, 8-Bit Octal DAC with Rail-to-Rail Output Buffers___________________________________________________________________

Seite 19

MAX5258/MAX5259+3V/+5V, Low-Power, 8-Bit Octal DAC with Rail-to-Rail Output Buffers8 _________________________________________________________________

Seite 20

MAX5258/MAX5259+3V/+5V, Low-Power, 8-Bit Octal DAC with Rail-to-Rail Output Buffers___________________________________________________________________

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