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DD

V

OUT

Shift Register

GND

SYNC

SCLK

D

IN

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REF

DAC Register

Ref (+)

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Resistor

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Design

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.

DAC8551-Q1, DAC6551-Q1

SLASEB8C – FEBRUARY 2016 – REVISED NOVEMBER 2016

DACx551-Q1 Automotive 16-, 12-Bit, Ultralow-Glitch, Voltage-Output DAC

1

1 Features

1

•

Qualified for Automotive Applications

•

AEC-Q100 Qualified With the Following Results:

–

Device Temperature Grade 1: –40°C to 125°C

Ambient Operating Temperature Range

–

Device HBM ESD Classification Level 2

–

Device CDM ESD Classification Level C4B

•

Relative Accuracy:

–

DAC8551-Q1 (16-Bit): 4 LSB INL

–

DAC6551-Q1 (12-Bit): 0.3 LSB INL

•

Ultralow Glitch Impulse: 0.1 nV-s

•

Settling Time: 8 μs to ±0.003% FSR

•

Power Supply: 3 V to 5.5 V

•

Power-On Reset to Zero Scale

•

MicroPower Operation: 160 μA at 5 V

•

Low-Power Serial Interface With Schmitt-

Triggered Inputs

•

On-Chip Output Buffer Amplifier With Rail-to-Rail

Operation

•

Power-Down Capability

•

Binary Input

•

SYNC Interrupt Facility

•

Available in a Tiny VSSOP-8 Package

2 Applications

•

Automotive Radar

•

Automotive Sensors

3 Description

The DAC8551-Q1 and DAC6551-Q1 are small, low-

power, voltage-output, 16- and 12-bit digital-to-analog

converters

(DACs)

qualified

for

automotive

applications. The DACx551-Q1 devices provide good

linearity

and

minimize

undesired

code-to-code

transient voltages. The devices use a versatile 3-wire

serial interface that operates at clock rates to 30 MHz

and

is

compatible

with

standard

SPI,

QSPI,

Microwire,

and

digital

signal-processor

(DSP)

interfaces.

The

DACx551-Q1

devices

require

an

external

reference voltage to set the output range. The

devices incorporate a power-on-reset circuit that

ensures the DAC output powers up at 0 V and

remains there until a valid write to the device takes

place. The devices contain a power-down feature,

accessed over the serial interface, that reduces the

current consumption to 800 nA at 5 V.

The DACx551-Q1 devices power consumption is only

800 µW at 5 V, reducing to less than 4 μW in power-

down mode. The DACx551-Q1 devices are available

in a VSSOP-8 package.

Device Information(1)

PART NUMBER

PACKAGE

BODY SIZE (NOM)

DAC8551-Q1

DAC6551-Q1

VSSOP (8)

3.00 mm × 3.00 mm

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

the end of the data sheet.

Functional Block Diagram