DAC8728
- Bipolar Output: ±3V, up to ±16.5V
- Unipolar Output: 0V to +33V
- 16-Bit Resolution
- Low Power: 13.5mW/Ch
- Relative Accuracy: 4 LSB Max
- Flexible User Calibration
- Low Zero/Full-Scale Error
- Before User Calibration: ±10 LSB Max
- After User Calibration: ±1 LSB
- Low Glitch: 4nV-s
- Settling Time: 15µs
- Channel Monitor Output
- Programmable Gain: x4, x6
- Programmable Offset
- 16-Bit Parallel Interface: 50MHz (Write Operation)
- Packages: QFN-56 (8mm x 8mm), TQFP-64 (10mm x 10mm)
- APPLICATIONS
- Automatic Test Equipment
- PLC and Industrial Process Control
- Communications
The DAC8728 is a low-power, octal, 16-bit digital-to-analog converter (DAC). With a 5V reference, the output can either be a bipolar ±15V voltage when operating from a dual ±15.5V (or higher) power supply, or a unipolar 0V to +30V voltage when operating from a +30.5V power supply. With a 5.5V reference, the output can either be a ±16.5V for a dual ±17V (or higher) power supply, or a unipolar 0V to +33V voltage when operating from a +33.5V (or higher) power supply. This DAC provides low-power operation, good linearity, and low glitch over the specified temperature range of –40°C to +105°C. This device is trimmed in manufacturing and has very low zero and full-scale error. In addition, user calibration can be performed to achieve ±1 LSB bipolar zero/full-scale error for a bipolar supply, or ±1 LSB zero-code/full-scale error for a unipolar supply over the entire signal chain. The output range can be offset by using the DAC Offset Register.
The DAC8728 features a standard, high-speed, 16-bit parallel interface that operates at up to 50MHz and is 1.8V, 3V, and 5V logic compatible, to communicate with a DSP or microprocessor. The eight DACs and the auxiliary registers are addressed with five address lines. The device features double-buffered interface logic. An asynchronous load input (LDAC) transfers data from the DAC data register to the DAC latch. The asynchronous CLR input sets the output of all eight DACs to AGND. The VMON pin is a monitor output that connects to the individual analog outputs, the offset DAC, and the reference buffer outputs through a multiplexer (mux).
The DAC8728 is pin-to-pin compatible with the DAC8228 (14-bit) and the DAC7728 (12-bit).
技术文档
| 顶层文档 | 类型 | 标题 | 格式选项 | 下载最新的英语版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 数据表 | Octal, 16-bit, Low-Power, High-Voltage Output, Parallel Input D/A Converter 数据表 (Rev. A) | 2009-11-24 |
设计与开发
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DAC8728EVM — DAC8728 评估模块
DAC8728EVM 是具有 DAC8728 器件的全功能评估板。DAC8728 是低功耗、八路、+/-15V 输出、并行输入、16 位数模转换器 (DAC)。此评估模块 (EVM) 允许对 DAC8728 的所有方面进行评估，并且允许控制器件上的每个引脚。默认情况下，DAC8728EVM 被设计为在双极输出范围内工作，但是也可以通过正确配置两个跳线将它配置为在单极输出范围内工作。该 EVM 被设计成在宽电源电压范围内工作，并使用各种参考电压。已安装的精密电压基准 +5VDC 和 +2.5VDC 可通过板载跳线进行选择。
ADC-DAC-TO-VREF-SELECT-DESIGN-TOOL — The ADC-TO-VREF-SELECT tool enables the pairing of TI ADCs, DACs, and series voltage references.
| 封装 | 引脚 | CAD 符号、封装和 3D 模型 |
|---|---|---|
| TQFP (PAG) | 64 | Ultra Librarian |
| VQFN (RTQ) | 56 | Ultra Librarian |
订购和质量
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