MAX5712AUTT 데이터 시트보기 (PDF) - Maxim Integrated

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MAX5712AUTT

Low-Power, 12-Bit, Rail to Rail Voltage-Output Serial DAC in SOT23

Maxim Integrated 

MAX5712

Low-Power, 12-Bit, Rail to Rail

Voltage-Output Serial DAC in SOT23

General Description

The MAX5712 is a small footprint, low-power, 12-bit digital-

to-analog converter (DAC) that operates from a single

+2.7V to +5.5V supply. The MAX5712 on-chip precision

output amplifier provides rail-to-rail output swing. Drawing

only 85μA supply current at +3V, the MAX5712 is ideally

suited for portable battery-operated equipment.

The MAX5712 utilizes a 3-wire serial-interface that is

compatible with SPI/QSPI™/MICROWIRE® and DSP-

interface standards. All logic inputs are CMOS-logic com-

patible and buffered with Schmitt triggers to allow direct

interfacing to optocouplers. The MAX5712 incorporates

a power-on reset (POR) circuit that ensures the DAC

begins in a zero-volt-state upon power-up. A power-down

mode that reduces current consumption to 0.3μA may be

initiated through a software command.

The MAX5712 is available in a small 6-pin SOT23

package. For dual and quad 12-bit versions, see the

MAX5722 and MAX5742 data sheets. For single, dual,

and quad 10-bit versions, see the MAX5711, MAX5721

and MAX5741 data sheets. The MAX5712 is specified over

the automotive temperature range of -40°C to +125°C.

Applications

●● Automatic Tuning

●● Gain and Offset Adjustment

●● Power Amplifier Control

●● Process Control I/O Boards

●● Battery-Powered Equipment

●● VCO Control

Features

●● Wide -40°C to +125°C Operating Temperature Range

●● Low 85μA Supply Current

●● Ultra Low 0.3μA Power-Down Supply Current

●● Single +2.7V to +5.5V Supply Voltage

●● Fast 20MHz 3-Wire SPI/QSPI/MICROWIRE and

DSP-Compatible Serial Interface

●● Schmitt-Triggered Inputs for Direct Interfacing to

Optocouplers

●● Rail-to-Rail Output Buffer

●● Tiny 6-Pin SOT23 Package

●● Power-On Reset to 0V

●● Three Software-Selectable Power-Down Output

Impedances (100kΩ, 1kΩ, Hi-Z)

Ordering Information

PART

TEMP RANGE

PIN-

PACKAGE

TOP

MARK

MAX5712EUT+T -40°C to +85°C 6 SOT23

ABCQ/ACST

MAX5712AUT+T -40°C to +125°C 6 SOT23

AAUD/ACST

+Denotes a lead(Pb)-free/RoHS-compliant package.

Pin Configuration appears at end of data sheet.

QSPI is a trademark of Motorola, Inc.

MICROWIRE is a registered trademark of National Semiconductor, Corp.

Functional Diagram

VDD GND

DAC

REGISTER

REF+ REF-

12-BIT

DAC

OUTPUT

BUFFER

MAX5712

OUT

100kΩ 1kΩ

INPUT

CONTROL

LOGIC

POWER-DOWN

CONTROL

LOGIC

CS

SCLK

DIN

POWER-ON

RESET

19-2126; Rev 4; 9/16

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