ADI AD3552R低漂移超快速16位电流输出数模转换器(DAC)解决方案

ADI公司的AD3552R是低漂移超快速16位精度电流输出数模转换器(DAC), 采用2.5V固定基准电压源, 可在多个电压范围内配置.该器件包含3个漂移补偿反馈电阻器,用于调节输出电压所需的外部跨阻放大器(TIA).失调和增益调整寄存器允许生成多个输出范围,如0V至2.5V;0V至5V;0V至10V;-5V至+5V和-10V至+10V,以及具有完整16位分辨率的自定义中间范围. DAC可在快速模式下运行以实现最高速度,或在精确模式下运行以实现最高精度. AD3551R的额定温度范围为–40°C至+105°C扩展工业级温度范围, 5 mm × 5 mm LFCSP封装. 器件具有16位分辨率,快速模式下33 MUPS的单路速率,精确模式下22 MUPS的速率,小信号建立时间65ns,精确度0.1%,大信号建立时间100ns,精确度0.1%.器件具有超小毛刺：<50 pV×s,超低时延5 ns和总谐波失真在1 kHz时为−105 dB.器件有2.5V内部电压基准,10 ppm/°C最大温度系数.主要用在仪器仪表,硬件在环,过程控制设备,医疗设备,自动测试设备,数据采集系统,可编程电压源和光通信.本文介绍了AD3552R主要特性,功能框图, 应用框图和评估板EVAL-AD3552RFMC1Z主要特性,电路图和C材料清单.

The AD3551R is a low drift, ultra-fast, 16-bit accuracy, current output digital-to-analog converter (DAC) that can be configured in multiple voltage span ranges. The AD3551R operates with a fixed 2.5 V reference.

The device incorporates three drift compensating feedback resistors for the required external transimpedance amplifier (TIA) that scales the output voltage. Offset and gain scaling registers allow for generation of multiple output span ranges, such as 0 V to 2.5 V, 0 V to 5 V, 0 V to 10 V, −5 V to +5 V, and −10 V to +10 V, and custom intermediate ranges with full 16-bit resolution.

The DAC can operate in fast mode for maximum speed or precision mode for maximum accuracy.

The SPI interface can be configured in single SPI (classic SPI) mode, dual SPI mode, and quad SPI mode with single date rate (SDR) or double data rate (DDR), with logical levels from 1.2 V to 1.8 V.

To improve device robustness, cyclic redundancy check (CRC) can be enabled. Multiple error checkers have also been integrated to det...