DAC7551ZTDRNRQ1屬于集成電路（IC）的數(shù)模轉(zhuǎn)換器（DAC）。由美國(guó)德州儀器公司制造生產(chǎn)的DAC7551ZTDRNRQ1數(shù)模轉(zhuǎn)換器（DAC）數(shù)模轉(zhuǎn)換器（DAC、D/A、D2A 或 D 轉(zhuǎn) A）可將數(shù)字信號(hào)轉(zhuǎn)換為緩沖或無(wú)緩沖的模擬電壓或電流。DAC 架構(gòu)是否適合特定應(yīng)用，要取決于分辨率和采樣頻率。DAC 通常用于音樂(lè)播放器，將數(shù)字?jǐn)?shù)據(jù)流轉(zhuǎn)換為模擬音頻流。它們還用于電視和手機(jī)，將數(shù)字視頻數(shù)據(jù)轉(zhuǎn)換為模擬視頻信號(hào)，再連接到屏幕驅(qū)動(dòng)器，以顯示單色或彩色圖像。

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.