1 Features

1• Qualified for Automotive Applications

• Relative Accuracy (INL): ±0.35 LSB

• Ultra-Low Glitch Energy: 0.1 nV-s

• Low-Power Operation: 100 μA at 2.7 V

• Power-On Reset-to-Zero Scale

• Power Supply: 2.7- to 5.5-V Single Supply

• Power-Down: 0.05 μA at 2.7 V

• 12-Bit Linearity and Monotonicity

• Rail-to-Rail Voltage Output

• Settling Time: 5 μs (Max)

• SPI-Compatible Serial Interface With Schmitt-

Trigger Input: Up to 50 MHz

• Daisy-Chain Capability

• Asynchronous Hardware Clear-to-Zero Scale

• Specified Temperature Range:

–40°C to +105°C

• Small, 2-mm × 3-mm, 12-Lead USON Package

• Z-Suffix Offers Improved Delamination

2 Applications

• Portable, Battery-Powered Instruments

• Digital Gain and Offset Adjustment

• Programmable Voltage and Current Sources

• Programmable Attenuators

• Industrial Process Control

• ADAS Radar Applications

• Collision Warning

• Blind-Spot Detection

3 Description

The DAC7551-Q1 device is a single-channel, voltage-

output digital-to-analog converter (DAC) with exceptional linearity and monotonicity, and a

proprietary architecture that minimizes glitch energy.

The low-power DAC7551-Q1 device operates from a

single 2.7- to 5.5-V supply. The DAC7551-Q1 output amplifiers can drive a 2-kΩ, 200-pF load rail-to-rail

with 5-μs settling time. The output range is set using

an external voltage reference.

The 3-wire serial interface operates at clock rates up

to 50 MHz and is compatible with SPI™, QSPI™,

microwire, and DSP interface standards. The device

incorporates a power-on-reset (POR) circuit to ensure

that the DAC output powers up to 0 V and remains at

that voltage until a valid write cycle to the device

occurs. The device contains a power-down feature

that reduces the current consumption of the device to

under 2 μA.

Small size and low-power operation make the

DAC7551-Q1 device ideally suited for battery- operated, portable applications. The power

consumption is typically 0.5 mW at 5 V, 0.23 mW at

3 V, and reduces to 1 μW in power-down mode.

The DAC7551-Q1 device is available in a 12-pin

USON package and is specified over –40°C to

+105°C. The Z-suffix offers reduced delamination

compared to standard device.