OUT0

DAC

Register

DAC

Buffer

BUF

Channel 0

Channel 1

Channel 2

Channel 3

Power Down Logic

Resistive Network

Power On Reset

DAC80504

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. ADVANCE INFORMATION for pre-production products; subject to

change without notice.

DAC80504

SBAS874 – AUGUST 2017

DAC80504 Quad, 16-Bit, SPI Voltage Output DAC With Internal Reference

1

1 Features

1

•

Performance

–

INL: ±1 LSB Maximum at 16-Bit Resolution

–

TUE: ±0.1% 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 DAC80504 device is a low-power, four-channel,

buffered voltage-output, digital-to-analog converter

(DAC) with 16-bit resolution. This device 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

DAC80504

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

DAC80504 flexible interface enables operation with a

wide range of industry-standard microprocessors and

microcontrollers.

The DAC80504 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 DAC80504 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)

DAC80504

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.

Simplified Block Diagram