DAC7678SRGER by Texas Instruments | DACs | Avnet ASIA
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DAC7678SRGER

Texas Instruments

DAC 8-CH Resistor-String 12-bit 24-Pin VQFN EP T/R

Manufacturer Part #: DAC7678SRGER

Alternate Part #: DAC7678SRGER


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Information

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.

 

Key Features

  • 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
  • Technical Attributes

    Description
    Value
    Find similar Parts
    Typical Single Supply Voltage
    3.3|5 V
    Digital Supply Support
    No
    Operating Temperature
    -40 to 125 °C
    Output Polarity
    Unipolar
    Digital Interface Type
    Serial (2-Wire, I2C)
    Maximum Settling Time
    10 us
    Number of Outputs per Chip
    8
    Power Supply Type
    Single
    Architecture
    Resistor-String
    Voltage Reference
    Internal|External
    Maximum Single Supply Voltage
    5.5 V
    Integral Nonlinearity Error
    ±1 LSB
    Full Scale Error
    0.2 % of FSR
    Pin Count
    24
    Max Processing Temp
    260
    Mounting
    Surface Mount
    Minimum Single Supply Voltage
    2.7 V
    MSL Level
    3
    Number of DAC Channels
    8
    Product Dimensions
    4 x 4 x 0.88 mm
    Output Type
    Voltage
    Resolution
    12 Bit
    Lead Finish
    Gold
    Supplier Package
    VQFN EP

    ECCN / UNSPSC

    Description
    Value
    ECCN:
    EAR99
    SCHEDULE B:
    8542 2121-00
    HTSN:
    8542 2121-00
    UNSPSC:
    32101600
    UNSPSC VERSION:
    V15.1101

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