产品详细信息

Resolution (Bits) 16 Number of DAC channels (#) 4 Interface type SPI Output type Buffered Voltage Settling time (µs) 6 Features On-chip Offset and Gain Calibration, SDO Reference type Ext Architecture R-2R Rating Catalog Output range (Max) (mA/V) 16.5 Output range (Min) (mA/V) -16.5 Operating temperature range (C) -40 to 105
Resolution (Bits) 16 Number of DAC channels (#) 4 Interface type SPI Output type Buffered Voltage Settling time (µs) 6 Features On-chip Offset and Gain Calibration, SDO Reference type Ext Architecture R-2R Rating Catalog Output range (Max) (mA/V) 16.5 Output range (Min) (mA/V) -16.5 Operating temperature range (C) -40 to 105
TQFP (PFB) 48 81 mm² 9 x 9 VQFN (RHA) 40 36 mm² 6 x 6
  • Bipolar Output: Up to ±16V
  • Unipolar Output: 0V to +20V
  • 16-Bit Monotonic
  • Relative Accuracy: 1 LSB Max
  • Low Zero and Gain Errors
    • Before User Calibration: 4 LSB
    • After User Calibration:
      0.125 LSB Zero Error, 1 LSB Gain Error
  • Low Noise: 60nV/Hz
  • Settling Time: 6µs
  • Configurable Gain: x2/x4
  • Analog Output Monitor
  • Power-Down Mode
  • SPI: Up to 50MHz, 1.8V/3V/5V Logic
  • Daisy-Chain Mode
  • Operating Temperature: -40°C to +105°C
  • Packages: QFN-40 (6x6mm), TQFP-48 (7x7mm)
  • APPLICATIONS
    • Automatic Test Equipment
    • Instrumentation
    • Industrial Process Control
    • Communications

All trademarks are the property of their respective owners.

  • Bipolar Output: Up to ±16V
  • Unipolar Output: 0V to +20V
  • 16-Bit Monotonic
  • Relative Accuracy: 1 LSB Max
  • Low Zero and Gain Errors
    • Before User Calibration: 4 LSB
    • After User Calibration:
      0.125 LSB Zero Error, 1 LSB Gain Error
  • Low Noise: 60nV/Hz
  • Settling Time: 6µs
  • Configurable Gain: x2/x4
  • Analog Output Monitor
  • Power-Down Mode
  • SPI: Up to 50MHz, 1.8V/3V/5V Logic
  • Daisy-Chain Mode
  • Operating Temperature: -40°C to +105°C
  • Packages: QFN-40 (6x6mm), TQFP-48 (7x7mm)
  • APPLICATIONS
    • Automatic Test Equipment
    • Instrumentation
    • Industrial Process Control
    • Communications

All trademarks are the property of their respective owners.

The DAC8734 is a high-accuracy, quad-channel, 16-bit digital-to-analog converter (DAC) that operates from supply voltages of ±5V to ±18V in bipolar output mode, and from ±5V to +24V/-12V in unipolar mode. With a 5V reference, the DAC8734 can be configured to output ±10V, ±5V, 0V to 20V, or 0V to 10V. The DAC8734 provides 16-bit monotonicity, excellent integral nonlinearity (INL) error of ±1 LSB, low glitch, and low noise over the operating temperature range of -40°C to +105°C. This device is trimmed in production for very low zero and gain errors. In addition, the DAC8734 implements a user-programmable system-level calibration function to achieve ±0.125 LSB zero error and ±1 LSB gain error.

The DAC8734 has integrated reference buffers and output buffers. It features a standard high-speed 1.8V, 3V, or 5V serial peripheral interface (SPI) that operates at clock rates of up to 50MHz to communicate with a DSP or microprocessor. The four DAC channels and the auxiliary registers are addressed with four address bits. The device features double-buffered interface logic for simultaneous updates of all DACs. An asynchronous load input (LDAC) transfers data from the input data register to the DAC latch, and the contents of the DAC latch set the output voltage. The asynchronous RST input sets the output of all four DACs to 0V. The VMON pin is an analog monitor output that multiplexes the individual DAC outputs or the AIN pin.

The DAC8734 is pin-compatible with the DAC8234 (14-bit) and the DAC7716 (12-bit).

The DAC8734 is a high-accuracy, quad-channel, 16-bit digital-to-analog converter (DAC) that operates from supply voltages of ±5V to ±18V in bipolar output mode, and from ±5V to +24V/-12V in unipolar mode. With a 5V reference, the DAC8734 can be configured to output ±10V, ±5V, 0V to 20V, or 0V to 10V. The DAC8734 provides 16-bit monotonicity, excellent integral nonlinearity (INL) error of ±1 LSB, low glitch, and low noise over the operating temperature range of -40°C to +105°C. This device is trimmed in production for very low zero and gain errors. In addition, the DAC8734 implements a user-programmable system-level calibration function to achieve ±0.125 LSB zero error and ±1 LSB gain error.

The DAC8734 has integrated reference buffers and output buffers. It features a standard high-speed 1.8V, 3V, or 5V serial peripheral interface (SPI) that operates at clock rates of up to 50MHz to communicate with a DSP or microprocessor. The four DAC channels and the auxiliary registers are addressed with four address bits. The device features double-buffered interface logic for simultaneous updates of all DACs. An asynchronous load input (LDAC) transfers data from the input data register to the DAC latch, and the contents of the DAC latch set the output voltage. The asynchronous RST input sets the output of all four DACs to 0V. The VMON pin is an analog monitor output that multiplexes the individual DAC outputs or the AIN pin.

The DAC8734 is pin-compatible with the DAC8234 (14-bit) and the DAC7716 (12-bit).

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技术文档

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类型 标题 下载最新的英文版本 日期
* 数据表 Quad, 16-bit, High Accuracy, +/-15V Output Serial Input DAC 数据表 (Rev. A) 2009年 9月 1日
技术文章 DAC Essentials: The resistor ladder 2013年 5月 29日
用户指南 DAC8734EVM User Guide (Rev. B) 2010年 9月 2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 下载英文版本 2008年 10月 16日

设计与开发

有关其他条款或所需资源,请点击下面的任何链接来查看详情页面。

评估板

DAC8734EVM — DAC8734 评估模块

DAC8734EVM 包含 DAC8734 数模转换器。EVM 模块提供简单快捷的方法来评估这款高分辨率串行输入模数转换器 (DAC) 的功能和性能。默认情况下,DAC8734EVM 被设计为在双极输出范围内工作,但是也可以通过简单的切换更改将它配置为在单极输出范围内工作。EVM 提供串行接口头以轻松连接所有主机微处理器或 TI DSP 基本系统。已安装的精密电压基准 +5VDC 和 +2.5VDC 可通过板载开关 S2 和 S3 进行选择。REF5050(+5.0 VDC 电源)和 REF5025 (+2.5VDC) 与具有各种参考值的 REF50xx 系列引脚兼容。

现货
数量限制: 2
软件编程工具

DXP — DXP DAC 操作器程序

DAC Exerciser Program (DXP)is a software tool from Texas Instruments for evaluating DACs without the requirements of expensive pattern generators or writing complex software. When used with a Texas Instruments DAC EVM and a modular motherboard, it allows for simple and easy digital signal generation (...)
仿真模型

DAC8734 IBIS Model

SBAM085.ZIP (84 KB) - IBIS Model
仿真工具

PSPICE-FOR-TI — PSPICE® for TI design and simulation tool

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。

借助 PSpice for TI 的设计和仿真环境及其内置的模型库,您可对复杂的混合信号设计进行仿真。创建完整的终端设备设计和原型解决方案,然后再进行布局和制造,可缩短产品上市时间并降低开发成本。 

在 PSpice for TI 设计和仿真工具中,您可以搜索 TI 器件、了解产品系列、打开测试台并对您的设计进行仿真,从而进一步分析选定的器件。您还可对多个 TI 器件进行联合仿真,以更好地展现您的系统。

除了一个完整的预加载模型库之外,您还可以在 PSPICE-FOR-TI 工具中轻松访问 TI 器件的全新技术资料。在您确认找到适合您应用的器件后,可访问 TI store 购买产品。 

借助 PSpice for TI,您可使用合适的工具来满足您在整个设计周期(从电路探索到设计开发和验证)的仿真需求。免费获取、轻松入门。立即下载 PSpice 设计和仿真套件,开始您的设计。

入门

  1. 申请使用 PSPICE-FOR-TI 仿真器
  2. 下载并安装
  3. 观看有关仿真入门的培训
仿真工具

TINA-TI — 基于 SPICE 的模拟仿真程序

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。

如需获取可用 TINA-TI 模型的完整列表,请参阅:SpiceRack - 完整列表 

需要 HSpice 模型来帮助您设计?我们的 HSpice 模型系列可在此处找到。

计算工具

ANALOG-ENGINEER-CALC — 模拟工程师计算器

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。
封装 引脚 下载
TQFP (PFB) 48 了解详情
VQFN (RHA) 40 了解详情

订购与质量

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/FIT 估算
  • 材料成分
  • 认证摘要
  • 持续可靠性监测

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支持与培训

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