Rainbow-electronics MAX5385 Manual do Utilizador descarregar pdf

General Description

The MAX5383/MAX5384/MAX5385 low-cost, 8-bit digital-

to-analog converters (DACs) in miniature 6-pin SOT23

packages have a simple 3-wire, SPI™/QSPI™/

MICROWIRE™-compatible serial interface that operates

up to 10MHz. The MAX5383 has an internal +2V refer-

ence and operates from a +2.7V to +3.6V supply. The

MAX5384 has an internal +4V reference and operates

from a +4.5V to +5.5V supply. The MAX5385 operates

over the full +2.7V to +5.5V supply range and has an

internal reference equal to 0.9

The MAX5383/MAX5384/MAX5385 require an extremely

low supply current of only 150µA (typ) and provide a

buffered voltage output. These devices power up at zero

code and remain there until a new code is written to the

DAC registers. This provides additional safety for appli-

cations that drive valves or other transducers that need

to be off on power-up. The MAX5383/MAX5384/

MAX5385 include a 1µA, low-power shutdown mode that

features software-selectable output loads of 1kΩ, 100kΩ,

or 1MΩ to ground.

Applications

Automatic Tuning (VCO)

Power Amplifier Bias Control

Programmable Threshold Levels

Automatic Gain Control

Automatic Offset Adjustment

Features

♦ 8-Bit Resolution in a Miniature 6-Pin SOT23

Package

♦ Wide +2.7V to +5.5V Supply Range (MAX5385)

♦ <1µA Shutdown Mode

♦ Software-Selectable Output Resistance During

Shutdown

♦ Buffered Output Drives Resistive Loads

♦ Low-Glitch Power-On Reset to Zero DAC Output

♦ 3-Wire SPI/QSPI/MICROWIRE-Compatible Interface

♦ < ±5% Full-Scale Error (MAX5385)

♦ < ±1LSB max INL/DNL

♦ Low 230µA (max) Supply Current

MAX5383/MAX5384/MAX5385

Low-Cost, Low-Power, 8-Bit DACs with 3-Wire

Serial Interface in SOT23

________________________________________________________________ Maxim Integrated Products 1

GND

DINV

5 SCLK

OUT

MAX5383

MAX5384

MAX5385

SOT23

TOP VIEW

Pin Configuration

GND

MC68XXXX

PCS0

OUT

SCK

MOSI

SCLK

DIN

MAX5385

+2.7V TO +5.5V

Typical Operating Circuit

19-1718; Rev 2; 1/02

Ordering Information

SPI and QSPI are trademarks of Motorola, Inc.

MICROWIRE is a trademark of National Semiconductor Corp.

PART TEMP RANGE

PIN-

PACKAGE

SOT

TOP MARK

MAX5383EUT-T -40°C to +85°C 6 SOT23 AADF

MAX5383EZT-T -40°C to +85°C 6 SOT23-Thin AAAH

MAX5384EUT-T -40°C to +85°C 6 SOT23 AADH

MAX5384EZT-T -40°C to +85°C 6 SOT23-Thin AAAI

MAX5385EUT-T -40°C to +85°C 6 SOT23 AADJ

MAX5385EZT-T -40°C to +85°C 6 SOT23-Thin AAAJ

Selector Guide

PART INTERNAL REFERENCE

MAX5383 2V

MAX5384 4V

MAX5385 0.9 ✕ V

For price, delivery, and to place orders, please contact Maxim Distribution at 1-888-629-4642,

or visit Maxim’s website at www.maxim-ic.com.

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Resumo do Conteúdo

Página 1 - Serial Interface in SOT23

General DescriptionThe MAX5383/MAX5384/MAX5385 low-cost, 8-bit digital-to-analog converters (DACs) in miniature 6-pin SOT23packages have a simple 3-wi

Página 2

MAX5383/MAX5384/MAX5385Chip InformationTRANSISTOR COUNT: 2160Low-Cost, Low-Power, 8-Bit DACs with 3-WireSerial Interface in SOT2310 _________________

Página 3

MAX5383/MAX5384/MAX5385Low-Cost, Low-Power, 8-Bit DACs with 3-WireSerial Interface in SOT23Package Information________________________________________

Página 4

MAX5383/MAX5384/MAX5385Low-Cost, Low-Power, 8-Bit DACs with 3-WireSerial Interface in SOT23Maxim cannot assume responsibility for use of any circuitry

Página 5

MAX5383/MAX5384/MAX5385Low-Cost, Low-Power, 8-Bit DACs with 3-WireSerial Interface in SOT232 _________________________________________________________

Página 6

MAX5383/MAX5384/MAX5385Low-Cost, Low-Power, 8-Bit DACs with 3-WireSerial Interface in SOT23___________________________________________________________

Página 7

MAX5383/MAX5384/MAX5385Low-Cost, Low-Power, 8-Bit DACs with 3-WireSerial Interface in SOT234 _________________________________________________________

Página 8

MAX5383/MAX5384/MAX5385Low-Cost, Low-Power, 8-Bit DACs with 3-WireSerial Interface in SOT23___________________________________________________________

Página 9

MAX5383/MAX5384/MAX5385Low-Cost, Low-Power, 8-Bit DACs with 3-WireSerial Interface in SOT236 _________________________________________________________

Página 10

Detailed DescriptionThe MAX5383/MAX5384/MAX5385 voltage-output, 8-bitDACs ensure monotonic performance by offering full 8-bit performance with less th

Página 11

combination of resistive loads >10kΩ and capacitiveloads <50pF.Power-On ResetThe MAX5383/MAX5384/MAX5385 have a power-onreset circuit to set the

Página 12

input register, it transfers its contents to the DAC latchon CS’s low-to-high transition (Figure 3). Note that if CSis not kept low during the entire