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.)

AD7245AAN属于集成电路（IC） > 数模转换器（DAC）。亚德诺半导体技术有限公司制造生产的AD7245AAN数模转换器（DAC）数模转换器（DAC、D/A、D2A 或 D 转 A）可将数字信号转换为缓冲或无缓冲的模拟电压或电流。DAC 架构是否适合特定应用，要取决于分辨率和采样频率。DAC 通常用于音乐播放器，将数字数据流转换为模拟音频流。它们还用于电视和手机，将数字视频数据转换为模拟视频信号，再连接到屏幕驱动器，以显示单色或彩色图像。