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数据转换器
数模转换器 (DAC)
精密 DAC (≤10MSPS)

DAC8728

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八通道低功耗 16 位 +/-16.5V 输出并行输入数模转换器

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数据表

DAC8728

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产品详情

Resolution (Bits) 16 Number of DAC channels 8 Interface type Parallel Output type Buffered Voltage Settling time (µs) 15 Features On-chip Offset and Gain Calibration Reference type Ext Architecture String Rating Catalog Output range (max) (mA/V) 16.5 Output range (min) (mA/V) -16.5 Sample/update rate (Msps) 0.066 Power consumption (typ) (mW) 107 Operating temperature range (°C) -40 to 105
Resolution (Bits) 16 Number of DAC channels 8 Interface type Parallel Output type Buffered Voltage Settling time (µs) 15 Features On-chip Offset and Gain Calibration Reference type Ext Architecture String Rating Catalog Output range (max) (mA/V) 16.5 Output range (min) (mA/V) -16.5 Sample/update rate (Msps) 0.066 Power consumption (typ) (mW) 107 Operating temperature range (°C) -40 to 105
TQFP (PAG) 64 144 mm² 12 x 12 VQFN (RTQ) 56 64 mm² 8 x 8
  • 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
  • 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).

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).
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类型 标题 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年 11月 24日
EVM 用户指南 DAC8728EVM User's Guide 2010年 2月 23日
应用手册 所选封装材料的热学和电学性质 2008年 10月 16日
应用手册 高速数据转换 英语版 2008年 10月 16日

设计和开发

如需其他信息或资源，请点击以下任一标题进入详情页面查看（如有）。

评估板

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。

用户指南: PDF
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仿真模型

DAC8728 IBIS Model

SBAM101.ZIP (115 KB) - IBIS Model
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计算工具

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模拟工程师计算器旨在加快模拟电路设计工程师经常使用的许多重复性计算。该基于 PC 的工具提供图形界面，其中显示各种常见计算的列表（从使用反馈电阻器设置运算放大器增益到为稳定模数转换器 (ADC) 驱动器缓冲器电路选择合适的电路设计元件）。除了可用作单独的工具之外，该计算器还能够很好地与模拟工程师口袋参考书中所述的概念配合使用。
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PSpice® for TI 可提供帮助评估模拟电路功能的设计和仿真环境。此功能齐全的设计和仿真套件使用 Cadence® 的模拟分析引擎。PSpice for TI 可免费使用，包括业内超大的模型库之一，涵盖我们的模拟和电源产品系列以及精选的模拟行为模型。

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TINA-TI 提供了 SPICE 所有的传统直流、瞬态和频域分析以及更多。TINA 具有广泛的后处理功能，允许您按照希望的方式设置结果的格式。虚拟仪器允许您选择输入波形、探针电路节点电压和波形。TINA 的原理图捕获非常直观 - 真正的“快速入门”。

TINA-TI 安装需要大约 500MB。直接安装，如果想卸载也很容易。我们相信您肯定会爱不释手。

TINA 是德州仪器 (TI) 专有的 DesignSoft 产品。该免费版本具有完整的功能，但不支持完整版 TINA 所提供的某些其他功能。

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用户指南: PDF
英语版 (Rev.A): PDF
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封装 引脚 下载
TQFP (PAG) 64 查看选项
VQFN (RTQ) 56 查看选项
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订购和质量

包含信息：
  • RoHS
  • REACH
  • 器件标识
  • 引脚镀层/焊球材料
  • MSL 等级/回流焊峰值温度
  • MTBF/时基故障估算
  • 材料成分
  • 鉴定摘要
  • 持续可靠性监测
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  • 制造厂地点
  • 封装厂地点

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