Analog Devices Inc. AD5721R 电压输出数模转换器
亚德诺半导体 AD5721 12 位多范围电压 输出数模转换器（DAC）是串行输入、电压输出数模转换器，采用单电源供电，（ 电压范围 4.75V-30V），或双电源供电（电压范围 -16.5V 至 0V VSS 和 4.75V-16.5V VDD。 单通道的 AD5721R 数模转换器集成了输出放大器和基准电压源缓冲器， 构成易于使用、通用的解决方案。AD5721R 的串行接口兼容 DSP 和 微控制器串行标准， 可支持最高达 50MHz 的时钟速率。利用双缓冲， 数模转换器输出可实现异步更新。用户可选功能包括二进制 补码或直接二进制输入编码，并可通过 控制寄存器内的 RA[2:0] 位选择输出范围。提供八个软件可编程输出范围，包括 0V 至 5V、0V 至 10V、0V 至 16V、0V 至 20V、±3V、±5V、±10V、−2.5V 至 +7.5V， 5% 超温。AD5721R DAC 额定工作于 −40°C 到 +125°C 的工业 温度范围内， 适用于工业自动化、仪器仪表、数据采集、 开闭环伺服控制、过程控制和可编程逻辑 控制器。
Compatible with DSP and microcontroller interface standards, AD5721R's serial interface operates at clock rates of up to 50MHz. Double buffering enables the asynchronous updating of the DAC output. User-selectable functions include twos complement or straight binary input coding and output range via the RA[2:0] bits in the control register.
Eight software-programmable output ranges are available including 0V to 5V, 0V to 10V, 0V to 16V, 0V to 20V, ±3V, ±5V, ±10V, −2.5V to +7.5V with 5% over range. Operating to specifications over the -40°C to +125°C industrial temperature range, the AD5721R DACs are ideal for industrial automation, instrumentation, data acquisition, open-/closed-loop servo control, process control, and programmable logic controllers.
特性
- 8 software-programmable output ranges: 0V to 5V, 0V to 10V, 0V to 16V, 0V to 20V, ±3V, ±5V, ±10V, −2.5V to +7.5V; 5% over range
- Total unadjusted error (TUE): 0.1% FSR maximum
- 16-bit accuracy: ±2LSB maximum
- Guaranteed monotonicity: ±1LSB maximum
- Single-channel, 12-bit DACs
- Settling time: 7.5μs typical
- Integrated reference buffers
- Low noise: 35nV/√Hz
- Low glitch: 1nV-sec
- 1.8V logic compatibility
- Asynchronous updating via LDAC
- Asynchronous RESET to zero scale/midscale
- DSP/microcontroller-compatible serial interface
- Robust 4kV HBM ESD rating
- Available in 16-lead TSSOP and 16-lead LFCSP packages
- Operating temperature range: -40°C to +125°C
应用
- Industrial automation
- Instrumentation
- Data acquisition
- Open- or closed-loop servo control
- Process control
- Programmable logic controllers
Functional Block Diagram
