AD7245AARZ:  12-Bit DACPORT with Double-Buffered Parallel Input

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.

Both parts are microprocessor compatible, with high speed data latches and double-buffered interface logic. The AD7245A accepts 12-bit parallel data which is loaded into the input latch on the rising edge of CS or WR. The AD7248A has an 8-bit wide data bus with data loaded to the input latch in two write operations. For both parts, an asynchronous LDAC signal transfers data from the input latch to the DAC latch and updates the analog output. The AD7245A also has a CLR signal on the DAC latch which allows features such as power-on reset to be implemented.

The on-chip 5 V buried Zener diode provides a low noise, temperature compensated reference for the DAC. For single supply operation, two output ranges of 0 V to +5 V and 0 V to +10 V are available, while these two ranges plus an additional ±5 V range are available with dual supplies. The output amplifiers are capable of developing +10 V across a 2 kOhm load to GND.

The AD7245A/AD7248A is fabricated in linear compatible CMOS (LC2MOS), an advanced, mixed technology process that combines precision bipolar circuits with low power CMOS logic. The AD7245A is available in a small, 0.3" wide, 24-pin DIP and SOIC and in 28-terminal surface mount packages. The AD7248A is packaged in a small, 0.3" wide, 20-pin DIP SOIC and in 20-terminal surface mount packages.

AD7245AARZ 功能框图

AD7245A 芯片订购指南
产品型号 产品状态 封装 引脚 温度范围
AD7245AAN 量产 24 ld PDIP 24 工业
AD7245AANZ 量产 24 ld PDIP 24 工业
AD7245AAP 量产 28 ld PLCC 28 工业
AD7245AAP-REEL 量产 28 ld PLCC 28 工业
AD7245AAPZ 量产 28 ld PLCC 28 工业
AD7245AAPZ-REEL 量产 28 ld PLCC 28 工业
AD7245AAQ 量产 CERDIP GLASS SEAL 24 工业
AD7245AAR 量产 24 ld SOIC - Wide 24 工业
AD7245AAR-REEL 量产 24 ld SOIC - Wide 24 工业
AD7245AARZ 量产 24 ld SOIC - Wide 24 商业
AD7245AARZ-REEL 量产 24 ld SOIC - Wide 24 商业
AD7245ABN 量产 24 ld PDIP 24 工业
AD7245ABNZ 量产 24 ld PDIP 24 工业
AD7245ABR 量产 24 ld SOIC - Wide 24 工业
AD7245ABR-REEL 量产 24 ld SOIC - Wide 24 工业
AD7245ABRZ 量产 24 ld SOIC - Wide 24 商业
AD7245ABRZ-REEL 量产 24 ld SOIC - Wide 24 商业
AD7245AQ 量产 CERDIP GLASS SEAL 24 工业
AD7245ATQ 量产 CERDIP GLASS SEAL 24 军用
AD7245JN 量产 24 ld PDIP 24 商业
AD7245JNZ 量产 24 ld PDIP 24 商业
AD7245JP 量产 28 ld PLCC 28 商业
AD7245JP-REEL 量产 28 ld PLCC 28 商业
AD7245JPZ 量产 28 ld PLCC 28 商业
AD7245JPZ-REEL 量产 28 ld PLCC 28 商业
AD7245SQ 量产 CERDIP GLASS SEAL 24 军用
AD7245AARZ 应用技术支持与电子电路设计开发资源下载
  1. AD7245A 数据手册DataSheet 下载 . pdf
  2. ADI 模拟器件公司比较器产品选型指南 . pdf
  3. Analog Devices, Inc. 美国模拟器件公司产品订购手册 .pdf