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数模转换器 (DAC)
精密 DAC (≤10 MSPS)

DAC8734

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16 位四通道、高精度 +/-16.5V 输出数模转换器

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DAC8734

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产品详情

Resolution (Bits) 16 Number of DAC channels 4 Interface type SPI Output type Buffered Voltage Output voltage range (V) -10 to 10, -5 to 5, 0 to 10, 0 to 20 INL (max) (±LSB) 1 Settling time (µs) 6 Reference type Ext Architecture R-2R Rating Catalog Features On-chip Offset and Gain Calibration, SDO Sample/update rate (Msps) 0.125 Power consumption (typ) (mW) 280 Operating temperature range (°C) -40 to 105
Resolution (Bits) 16 Number of DAC channels 4 Interface type SPI Output type Buffered Voltage Output voltage range (V) -10 to 10, -5 to 5, 0 to 10, 0 to 20 INL (max) (±LSB) 1 Settling time (µs) 6 Reference type Ext Architecture R-2R Rating Catalog Features On-chip Offset and Gain Calibration, SDO Sample/update rate (Msps) 0.125 Power consumption (typ) (mW) 280 Operating temperature range (°C) -40 to 105
VQFN (RHA) 40 36 mm² (6 mm × 6 mm) TQFP (PFB) 48 81 mm² (9 mm × 9 mm)
  • 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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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 Quad, 16-Bit, High-Accuracy, ±16V Output, Serial Input D/A Converter 数据表 (Rev. A) 2009-9-1
电路设计 从 +5V 电源生成 ±15V 的适用于高压数据转换器的精密电源电 路 PDF | HTML 英语版 PDF | HTML 2025-12-12
电路设计 带外部反馈引脚的电压 DAC 输出过压保护电路 PDF | HTML 英语版 PDF | HTML 2025-10-10

设计与开发

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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。

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支持软件

DXP — DXP EVM GUI

DAC Exerciser Program (DXP) 是德州仪器 (TI) 的软件工具，无需昂贵的信号发生器即可评估 DAC，也无需编写复杂的软件。与德州仪器 (TI) DAC EVM 和模块化主板配合使用时，它可以轻松简单地生成 DAC 的数字信号，以生成用于测量和评估的模拟输出。

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仿真模型

DAC8734 IBIS Model

SBAM085.ZIP (84 KB) - IBIS 模型
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设计工具

ADC-DAC-TO-VREF-SELECT-DESIGN-TOOL — The ADC-TO-VREF-SELECT tool enables the pairing of TI ADCs, DACs, and series voltage references.

The ADC-TO-VREF-SELECT tool enables the pairing of TI analog-to-digital converters (ADCs) and series voltage references. Users can select an ADC device and the desired reference voltage, and the tool will list up to two voltage reference recommendations.
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封装 引脚 CAD 符号、封装和 3D 模型
VQFN (RHA) 40 Ultra Librarian
TQFP (PFB) 48 Ultra Librarian
适用于评估类项目的 TI 标准条款与条件。

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