DAC7678 具有 2.5V 内部参考的 12 位、8 通道、超低短时脉冲波形干扰、电压输出、2 线接口 DAC

DAC7678 说明

The DAC7678 is a low-power, voltage-output, eight-channel, 12-bit digital-to-analog converter (DAC). The DAC7678 includes a 2.5V internal reference (disabled by default), giving a full-scale output voltage range of 5V. The internal reference initial accuracy is ±1mV and can source up to 20mA at the VREFIN/VREFOUT pin. The device is monotonic, provides very good linearity, and minimizes undesired code-to-code transient voltages (glitch).

The DAC7678 uses a versatile, two-wire serial interface that is I2C-compatible and operates at clock rates of up to 3.4MHz. Multiple devices can share the same bus.

The DAC7678 incorporates a power-on-reset circuit that ensures the DAC output powers on at either zero-scale or midscale until a valid code is written to the device.


DAC5578 DAC6578 DAC7578 DAC7678
Resolution(Bits) 8   10   12   12  
DAC: Channels 8   8   8   8  
Settling Time(µs) 6   6   6   6  
Interface I2C   I2C   I2C   I2C  
Output Type Voltage   Voltage   Voltage   Voltage  
Output Range Min.(V or mA) 0   0V   0V   0V  
Output Range Max.(V or mA) 5.5V   5.5V   5.5V   5.5V  
Single/Dual Analog Supply Single Supply   Single Supply   Single Supply   Single Supply  
DNL(Max)(+/-LSB) 0.1   0.2   0.25   0.25  
INL(Max)(+/-LSB) 0.25   0.5   1   1  
INL (+/-)(Max)(%) 0.098   0.0489   0.0244   0.0244  
Monotonicity 8   10   12   12  
Power Consumption(Typ)(mW) 3.4   3.4   3.4   3.4  
Architecture String   String   String   String  
Reference: Type Ext   Ext   Ext   Int/Ext  
Analog Voltage AV/DD(Min)(V) 2.7   2.7   2.7   2.7  
Analog Voltage AV/DD(Max)(V) 5.5   5.5   5.5   5.5  
No. of Supplies (Unipolar) 1   1   1   1  
Rating Catalog   Catalog   Catalog   Catalog  
Pin/Package 16TSSOP, 24VQFN   16TSSOP, 24VQFN   16TSSOP, 24VQFN   16TSSOP, 24VQFN  
Operating Temperature Range(°C) -40 to 125   -40 to 125   -40 to 125   -40 to 125 
DAC7678 特性
DAC7678 芯片订购指南
器件 状态 温度 (oC) 封装 | 引脚 封装数量 | 封装载体 丝印标记
DAC7678SPW PREVIEW -40 to 125 TSSOP (PW) | 16 90 DAC7678
DAC7678SPWR PREVIEW -40 to 125 TSSOP (PW) | 16 2000 DAC7678
DAC7678SRGER PREVIEW -40 to 125 TSSOP (PW) | 16 3000 DAC7678
DAC7678SRGET PREVIEW -40 to 125 TSSOP (PW) | 16 250 DAC7678
DAC7678 应用技术支持与电子电路设计开发资源下载
  1. DAC7678 数据资料 dataSheet 下载.PDF
  2. TI 德州仪器仪DAC 模数转换器产品选型与价格 . xls
  3. 模数规格和性能特性术语表 (Rev. A) (PDF 1993 KB)
  4. 所选封装材料的热学和电学性质 (PDF 645 KB)
  5. 高速数据转换 (PDF 1967 KB)
  6. Shelf-Life Evaluation of Lead-Free Component Finishes (PDF 1305 KB)
  7. Analog-to-Digital Converter Grounding Practices Affect System Performance (PDF 56 KB)
  8. Principles of Data Acquisition and Conversion (PDF 50 KB)
  9. Interleaving Analog-to-Digital Converters (PDF 64 KB)
  10. What Designers Should Know About Data Converter Drift (PDF 95 KB)
  11. Giving Delta-Sigma Converters a Gain Boost with a Front End Analog Gain Stage (PDF 70 KB)
  12. Programming Tricks for Higher Conversion Speeds Utilizing Delta Sigma Converters (PDF 105 KB)
DAC7678 工具与软件
名称 型号 公司 工具/软件类型
DAC7678 评估模块 DAC7678EVM Texas Instruments 开发电路板/EVM
针对 Code Composer Studio 的 DCPFREETOOL 软件插件 DCPFREETOOL Texas Instruments 实用程序/插件
MDACBufferPro Design Utility for Multiplying Digital to Analog Converter Design MDACBUFFERPRO Texas Instruments  应用软件