DAC80508 datasheet(1/59 Pages) TI2

Part #	DAC80508

Description	DACx0508 Octal, 16-, 14-, 12-Bit, SPI, Voltage Output DAC with Internal Reference

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Manufacturer	TI2 [Texas Instruments]

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OUT0

DAC

Register

DAC

Buffer

Channel 0

Channel 1

Channel 2

Power Down Logic

Resistive Network

Power On Reset

DACx0508

OUT1

OUT2

REF

SCLK

SDI

SDO/ALARM or CLR

1

VDD

DAC

CS

INTERNAL

REFERENCE

VIO

GAIN

x1 OR x2

GND

BUF

Channel 3

OUT3

Channel 4

OUT4

Channel 5

OUT5

Channel 6

OUT6

Channel 7

OUT7

+1 OR +2

1

SDO/ALARM (DACx0508), CLR (DACx0508C)

Product

Folder

Order

Now

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Documents

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Software

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Community

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. PRODUCTION DATA.

DAC80508, DAC70508, DAC60508

SLASEL1D – JUNE 2017 – REVISED AUGUST 2018

DACx0508 Octal, 16-, 14-, 12-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: 2 ppm/°C Typical, DAC80508

•

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

–

Clear Output Function: DACx0508C

•

Wide Operating Range

–

Power Supply: 2.7 V to 5.5 V

–

Temperature Range: –40

˚C to 125˚C

•

50 MHz SPI Compatible Serial Interface

–

1.7 V to 5.5 V Operation

–

Daisy Chain Operation

–

CRC Error Check

•

Low Power: 0.6 mA/Channel at 5.5 V

•

Small Packages:

–

3 mm × 3 mm, 16-Pin WQFN

–

2.4 mm x 2.4 mm, 16-Pin DSBGA

2 Applications

•

Optical Networking

•

Wireless Infrastructure

•

Industrial Automation

•

Data Acquisition Systems

3 Description

The DACx0508 is a pin-compatible family of low

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

to-analog converters (DACs) with 16-, 14- and 12-bit

resolution. The DACx0508 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). The 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

DACx0508

is

performed

through a serial interface that operates at clock rates

up to 50 MHz. The VIO pin enables serial interface

operation from 1.7 V to 5.5 V. The DACx0508 flexible

interface enables operation with a wide range of

industry-standard

microprocessors

and

microcontrollers.

The DACx0508 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. The device consumes low

current of 0.6 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 DACx0508 is characterized for operation over

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

available in small packages.

Device Information(1)

PART NUMBER

PACKAGE

BODY SIZE (NOM)

DACx0508

WQFN (16)

3.00 mm × 3.00 mm

DSBGA (16)

2.40 mm x 2.40 mm

(1) For all available packages, see the orderable addendum at

the end of the data sheet.

Simplified Block Diagram

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