OUT0

DAC

Register

DAC

Buffer

BUF

Channel 0

Channel 1

Channel 2

Channel 3

Power Down Logic

Resistive Network

Power On Reset

DACx0504

OUT1

OUT2

OUT3

REF

SCLK

SDI

SDO/ALARM

RSTSEL

VDD

DAC

CS

Internal

Reference

VIO

÷1 or ÷2

GAIN

GAIN

×1 or ×2

GND

LDAC

REFDIV

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An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. UNLESS OTHERWISE NOTED, this document contains PRODUCTION

DATA.

DAC80504, DAC70504

SBAS871A – AUGUST 2017 – REVISED DECEMBER 2017

DACx0504 Quad, 16-, 14-Bit, SPI Voltage Output DACs With Internal Reference

1

1 Features

1

•

Performance

–

INL: ±1 LSB Maximum at 16-Bit Resolution

–

TUE: ±0.14% of FSR Maximum

•

Integrated 2.5 V Precision Internal Reference

–

Initial Accuracy: ±5 mV, Maximum

–

Low Drift: 5 ppm/°C, Typical

•

High Drive Capability: 20 mA With 0.5 V From

Supply Rails

•

Flexible Output Configuration

–

User Selectable Gain: 2, 1 or ½

–

Reset to Zero Scale or Midscale

•

Wide Operating Range

–

Power Supply: 2.7 V to 5.5 V

–

Temperature: –40

˚C to +125˚C

•

50-MHz, SPI-Compatible Serial Interface

–

4-Wire Mode, 1.7 V to 5.5 V Operation

–

Daisy-Chain Operation

–

CRC Error Check

•

Low Power: 0.7 mA/Channel at 5.5 V

•

Small Package: 3-mm × 3-mm, 16-Pin WQFN

2 Applications

•

Optical Networking

•

Wireless Infrastructure

•

Industrial Automation

•

Data Acquisition Systems

3 Description

The DACx0504 is a pin-compatible family of low-

power, four-channel, buffered voltage-output, digital-

to-analog converter (DAC) with 16- and 14-bit

resolution. The DACx0504 includes a 2.5-V, 5-

ppm/°C internal reference, eliminating the need for an

external precision reference in most applications. A

user-selectable gain configuration provides full-scale

output voltages of 1.25 V (gain = ½), 2.5 V (gain = 1),

or 5 V (gain = 2). This device operates from a single

2.7-V to 5.5-V supply, is specified monotonic, and

provides high linearity of ±1 LSB INL.

Communication

to

the

DACx0504

is

performed

through a 4-wire serial interface that operates at clock

rates of up to 50 MHz. The VIO pin enables serial

interface operation from 1.7 V to 5.5 V. The

DACx0504 flexible interface enables operation with a

wide range of industry-standard microprocessors and

microcontrollers.

The DACx0504 incorporates a power-on-reset circuit

that powers up and maintains the DAC outputs at

either zero scale or midscale until a valid code is

written to the device. This device consumes low

current of 0.7 mA/channel at 5.5 V, making it suitable

for battery-operated equipment. A per-channel power-

down feature reduces the device current consumption

to 15 µA.

The DACx0504 is characterized for operation over

the temperature range of –40°C to +125°C, and is

available in a small, 3-mm × 3-mm, QFN package.

Device Information(1)

PART NUMBER

PACKAGE

BODY SIZE (NOM)

DACx0504(2)

WQFN (16)

3.00 mm × 3.00 mm

(1) For all available packages, see the package option addendum

at the end of the data sheet.

(2) DAC80504 Product Preview

Simplified Block Diagram