AD5744R: 完整的四通道、14位、高精度、串行输入、双极性电压输出DAC
AD5744R是一款四通道、14位、串行输入、双极性电压输出DAC，采用±11.4 V至±16.5 V电源供电。标称满量程输出范围为±10 V。它内置输出放大器、基准电压缓冲器以及专有上电/省电控制电路。该器件还有一个数字I/O端口，可通过串行接口进行编程，并且内置一个模拟温度传感器。每个通道均配有数字偏置与增益调整寄存器。AD5744R是一款高性能转换器，可保证单调性，积分非线性(INL)误差为±1 LSB，噪声很低，建立时间为10 μs。它内置一个5 V片内基准电压源，其最大温度系数为10 ppm/°C。上电期间，当电源电压变化时，VOUTx通过一个低阻抗路径箝位在0 V。AD5744R基于iCMOS®技术平台，它可为工业/仪器设备OEM的模拟系统设计师提供能在较高电压下工作的高性能IC。基于该平台能够开发出可采用30 V电源、工作电压为±15 V的模拟IC，同时可降低功耗、缩小封装尺寸并提升交流与直流性能。AD5744R采用串行接口，能够以最高30 MHz的时钟速率工作，并且与DSP和微控制器接口标准兼容。利用双缓冲，所有DAC可实现同时更新。输入编码可以通过编程设置为二进制补码或偏移二进制格式。异步清零功能可将所有数据(DATA)寄存器清零至双极性零或零电平，具体取决于所用的编码方式。AD5744R是闭环伺服控制和开环控制应用的理想之选。它采用32引脚TQFP封装，额定温度范围为−40°C至+85°C工业温度范围。
The AD5744R is a quad, 14-bit, serial input, bipolar voltage output DAC that operates from supply voltages of ±11.4 V to ±16.5 V. Nominal full-scale output range is ±10 V. The AD5744R provides integrated output amplifiers, reference buffers, and proprietary power-up/power-down control circuitry. The part also features a digital I/O port, programmed via the serial interface, and an analog temperature sensor. The part incorporates digital offset and gain adjust registers per channel.The AD5744R is a high performance converter that provides guaranteed monotonicity, integral nonlinearity (INL) of ±1 LSB, low noise, and 10 μs settling time. The AD5744R includes an on-chip 5 V reference with a reference temperature coefficient of 10 ppm/°C maximum. During power-up when the supply voltages are changing, VOUTx is clamped to 0 V via a low impedance path.The AD5744R is based on the iCMOS® technology platform, which is designed for analog systems designers within industrial/instrumentation equipment OEMs who need high performance ICs at higher voltage levels. iCMOS enables the development of analog ICs capable of 30 V and operation at ±15 V supplies, while allowing reductions in power consumption and package size, coupled with increased ac and dc performance.The AD5744R uses a serial interface that operates at clock rates of up to 30 MHz and is compatible with DSP and microcontroller interface standards. Double buffering allows the simultaneous updating of all DACs. The input coding is programmable to either twos complement or offset binary formats. The asynchronous clear function clears all DATA registers to either bipolar zero or zero scale, depending on the coding used. The AD5744R is ideal for both closed-loop servo control and open-loop control applications. The AD5744R is available in a 32-lead TQFP and offers guaranteed specifications over the −40°C to +85°C industrial temperature range the functional block diagram.
AD5744R 特点
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AD5744R 技术指标
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AD5744R 芯片订购指南
| 产品型号 | 封装 | 引脚 | 温度范围 | 包装和数量 | 报价*(100-499) | 报价*1000 pcs |
|---|---|---|---|---|---|---|
| AD5744RCSUZ 产品状态: 量产 | 32 ld TQFP (7x7x1.0mm) | 32 | 工业 | Tray, 250 | $ 28.79 | $ 23.60 |
| AD5744RCSUZ-REEL7 产品状态: 量产 | 32 ld TQFP (7x7x1.0mm) | 32 | 工业 | Reel, 500 | - | $ 23.60 |
