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數據轉換器
數位轉類比轉換器 (DAC)
精密 DAC (≤10 MSPS)

DAC7678

現行

具 2.5V 內部參考的 12 位元、8 通道、超低突波、電壓輸出、2 線介面 DAC

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DAC60508 現行 採用小巧 WCSP 封裝且具精確內部參考的真實 12 位元、8 通道、SPI、電壓輸出 DAC Smaller 3mm × 3mm package with integrated reference

DAC7678

現行
立即訂購

產品詳細資料

Resolution (Bits) 12 Number of DAC channels 8 Interface type I2C Output type Buffered Voltage Output voltage range (V) 0 to 5.5 INL (max) (±LSB) 1 Settling time (µs) 7 Reference type Ext, Int Architecture String Rating Catalog Features Low glitch, Reset to Mid-Scale Sample/update rate (Msps) 0.083 Power consumption (typ) (mW) 3.4 Operating temperature range (°C) -40 to 125 Product type General-purpose DAC
Resolution (Bits) 12 Number of DAC channels 8 Interface type I2C Output type Buffered Voltage Output voltage range (V) 0 to 5.5 INL (max) (±LSB) 1 Settling time (µs) 7 Reference type Ext, Int Architecture String Rating Catalog Features Low glitch, Reset to Mid-Scale Sample/update rate (Msps) 0.083 Power consumption (typ) (mW) 3.4 Operating temperature range (°C) -40 to 125 Product type General-purpose DAC
VQFN (RGE) 24 16 mm² (4 mm × 4 mm) TSSOP (PW) 16 32 mm² (5 mm × 6.4 mm)
  • Relative Accuracy:
    • 1 LSB INL
  • Glitch Energy: 0.15nV-s
  • Internal Reference:
    • 2.5V Reference Voltage (disabled by default)
    • ±5mV Initial Accuracy (max)
    • 5ppm/°C Temperature Drift (typ)
    • 25ppm/°C Temperature Drift (max)
    • 20mA Sink/Source Capability
  • Power-On Reset to Zero Scale or Midscale
    • Devices in the TSSOP Package Reset to
      Zero Scale
    • Devices in the QFN Package Reset to Zero Scale
      or Midscale
  • Ultra-Low Power Operation: 0.13mA/Channel at 5V
    (without internal reference current)
  • Wide Power-Supply Range: +2.7V to +5.5V
  • 2-Wire Serial Interface (I2C compatible)
  • On-Chip Output Buffer Amplifier with Rail-to-Rail
    Operation
  • Temperature Range: –40°C to +125°C
  • APPLICATIONS
    • Portable Instrumentation
    • Closed-Loop Servo-Control
    • Process Control
    • Data Acquisition Systems
    • Programmable Attenuation
    • PC Peripherals

All other trademarks are the property of their respective owners
  • Relative Accuracy:
    • 1 LSB INL
  • Glitch Energy: 0.15nV-s
  • Internal Reference:
    • 2.5V Reference Voltage (disabled by default)
    • ±5mV Initial Accuracy (max)
    • 5ppm/°C Temperature Drift (typ)
    • 25ppm/°C Temperature Drift (max)
    • 20mA Sink/Source Capability
  • Power-On Reset to Zero Scale or Midscale
    • Devices in the TSSOP Package Reset to
      Zero Scale
    • Devices in the QFN Package Reset to Zero Scale
      or Midscale
  • Ultra-Low Power Operation: 0.13mA/Channel at 5V
    (without internal reference current)
  • Wide Power-Supply Range: +2.7V to +5.5V
  • 2-Wire Serial Interface (I2C compatible)
  • On-Chip Output Buffer Amplifier with Rail-to-Rail
    Operation
  • Temperature Range: –40°C to +125°C
  • APPLICATIONS
    • Portable Instrumentation
    • Closed-Loop Servo-Control
    • Process Control
    • Data Acquisition Systems
    • Programmable Attenuation
    • PC Peripherals

All other trademarks are the property of their respective owners

The DAC7678 is a low-power, voltage-output, octal 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 has an initial accuracy of ±5mV 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, 2-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 up to either zero-scale or mid-scale until a valid code is written to the device. These devices contain a power-down feature, accessed over the serial interface that reduces the current consumption of the device to typically 0.42µA at 5V. Power consumption (including internal reference) is typically 3.56mW at 3V, reducing to 0.68µW in power-down mode. The low power consumption, internal reference, and small footprint make this device ideal for portable, battery-operated equipment. The DAC7678 is drop-in and functionally compatible with DAC5578, DAC6578, and DAC7578. All devices are available in a 4x4 QFN-24 package and a TSSOP-16 package.

The DAC7678 is a low-power, voltage-output, octal 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 has an initial accuracy of ±5mV 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, 2-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 up to either zero-scale or mid-scale until a valid code is written to the device. These devices contain a power-down feature, accessed over the serial interface that reduces the current consumption of the device to typically 0.42µA at 5V. Power consumption (including internal reference) is typically 3.56mW at 3V, reducing to 0.68µW in power-down mode. The low power consumption, internal reference, and small footprint make this device ideal for portable, battery-operated equipment. The DAC7678 is drop-in and functionally compatible with DAC5578, DAC6578, and DAC7578. All devices are available in a 4x4 QFN-24 package and a TSSOP-16 package.
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重要文件 類型 標題 格式選項 下載最新的英文版本 日期
* 資料表 12-Bit, Octal-Chan, Ultra-Low Glitch, Voltage Output, 2-Wire Int DAC w/2.5V Ref datasheet (Rev. C) 2014/1/21
應用說明 A Basic Guide to I2C PDF | HTML 2022/11/8

設計與開發

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開發板

DAC7678EVM — DAC7678 評估模組

The DAC7678EVM is designed to evaluate the DAC7678, DAC5578, DAC6578, or DAC7578 digital to analog converters. By default, the DAC7678EVM is available with the DAC7678 installed but can be replaced with any one of the other pin compatible devices. The EVM provides a quick and easy way to evaluate (...)

使用指南: PDF
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DXP — DXP EVM GUI

DAC 操作器程序 (DXP) 是一款德州儀器的軟體工具，無需昂貴的模式產生器或編寫複雜軟體，即可評估 DAC。搭配德州儀器 DAC EVM 和模組化主機板使用時，可為 DAC 產生簡單易用的數位訊號，以產生用於量測和評估用途的類比輸出。

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模擬型號

DAC7678 IBIS Model

SBAM031.ZIP (61 KB) - IBIS 模型
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設計工具

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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封裝 針腳 CAD 符號、佔位空間與 3D 模型
VQFN (RGE) 24 Ultra Librarian
TSSOP (PW) 16 Ultra Librarian
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