AD7248A屬于集成電路（IC）的數(shù)模轉(zhuǎn)換器（DAC）。由亞德諾半導(dǎo)體技術(shù)有限公司制造生產(chǎn)的AD7248A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。

GENERAL DESCRIPTION

The AD7245A/AD7248A is an enhanced version of the industry standard AD7245/AD7248. Improvements include operation from 12 V to 15 V supplies, a ±1/2 LSB linearity grade, faster

interface times and better full scale and reference variations with VDD. Additional features include extended temperature range operation for commercial and industrial grades. The AD7245A/AD7248A is a complete, 12-bit, voltage output, digital-to-analog converter with output amplifier and Zener voltage reference on a monolithic CMOS chip. No external user trims are required to achieve full specified performance.

FEATURES

12-Bit CMOS DAC with Output Amplifier and Reference

Improved AD7245/AD7248:

12 V to 15 V Operation

1/2 LSB Linearity Grade

Faster Interface—30 ns Typ Data Setup Time

Extended Plastic Temperature Range (–40C to +85C)

Single or Dual Supply Operation

Low Power—65 mW Typ in Single Supply

Parallel Loading Structure: AD7245A

(8+4) Loading Structure: AD7248A

AD7245A/AD7248A–SPECIFICATIONS

(VDD= +12 V to +15 V,1VSS= O V or –12 V to –15 V,1 AGND = DGND = O V, RL= 2 k, CL= 100 pF. All specifications TMIN to TMAX unless otherwise noted.)