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Convertidores digital-analógicos (DAC)
DAC de precisión (≤ 10 MSPS)

DAC7678

ACTIVO

DAC de salida de tensión de 12 bits, canal octal, fallas ultrabajas, interfaz de 2 cables con refere

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DAC7678

ACTIVO
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Detalles del producto

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
TSSOP (PW) 16 32 mm² 5 x 6.4 VQFN (RGE) 24 16 mm² 4 x 4
  • 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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Documentación técnica

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Documentación principal Tipo Título Opciones de formato Fecha
* Data sheet 12-Bit, Octal-Chan, Ultra-Low Glitch, Voltage Output, 2-Wire Int DAC w/2.5V Ref datasheet (Rev. C) 21 ene 2014
Application note A Basic Guide to I2C PDF | HTML 08 nov 2022

Diseño y desarrollo

Para conocer los términos adicionales o los recursos necesarios, haga clic en cualquier título de abajo para ver la página de detalles cuando esté disponible.

Placa de evaluación

DAC7678EVM — Módulo de evaluación DAC7678

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 (...)

Guía del usuario: PDF
No disponible en TI.com
Soporte de software

DXP — DXP EVM GUI

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 (...)

Productos y hardware compatibles

Productos y hardware compatibles
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Modelo de simulación

DAC7678 IBIS Model

SBAM031.ZIP (61 KB) - IBIS Model
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Herramienta de cálculo

ANALOG-ENGINEER-CALC — Calculadora para ingenieros analógicos

La calculadora del ingeniero analógico está diseñada para acelerar muchos de los cálculos repetitivos que los ingenieros de diseño de circuitos analógicos utilizan de forma habitual. Esta herramienta para PC proporciona una interfaz gráfica con una lista de varios cálculos comunes que van desde el (...)
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Herramienta de diseño

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.
Productos y hardware compatibles

Productos y hardware compatibles
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Herramienta de simulación

PSPICE-FOR-TI — PSpice® para herramienta de diseño y simulación de TI

PSpice® para TI es un entorno de diseño y simulación que ayuda a evaluar la funcionalidad de los circuitos analógicos. Esta completa suite de diseño y simulación utiliza un motor de análisis analógico de Cadence®. Disponible sin ningún costo, PSpice para TI incluye una de las bibliotecas de modelos (...)
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Herramienta de simulación

TINA-TI — Programa de simulación analógica basado en SPICE

TINA-TI provides all the conventional DC, transient and frequency domain analysis of SPICE and much more. TINA has extensive post-processing capability that allows you to format results the way you want them. Virtual instruments allow you to select input waveforms and probe circuit nodes voltages (...)
Guía del usuario: PDF
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Encapsulado Pines Símbolos CAD, huellas y modelos 3D
TSSOP (PW) 16 Ultra Librarian
VQFN (RGE) 24 Ultra Librarian
Se aplican los Términos y condiciones estándar de TI para los elementos de evaluación.

Pedidos y calidad

Información incluida:
  • RoHS
  • REACH
  • Marcado del dispositivo
  • Acabado de plomo/material de la bola
  • Clasificación de nivel de sensibilidad a la humedad (MSL)/reflujo máximo
  • Estimaciones de tiempo medio entre fallas (MTBF)/fallas en el tiempo (FIT)
  • Contenido del material
  • Resumen de calificaciones
  • Monitoreo continuo de confiabilidad
Información incluida:
  • Lugar de fabricación
  • Lugar de ensamblaje

Los productos recomendados pueden tener parámetros, módulos de evaluación o diseños de referencia relacionados con este producto de TI.

Soporte y capacitación

Foros de TI E2E™ con asistencia técnica de los ingenieros de TI

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