1 Features

• 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, lowpower,

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 powerdown

mode. The DACx551-Q1 devices are available

in a VSSOP-8 package.