DAC80504 4-channel, true 16-bit, SPI, voltage-output DAC with precision internal reference | TI.com

DAC80504 (ACTIVE)

4-channel, true 16-bit, SPI, voltage-output DAC with precision internal reference

 

Description

The DACx0504 is a pin-compatible family of low-power, four-channel, buffered voltage-output, digital-to-analog converter (DAC) with 16- and 14-bit resolution. The DACx0504 includes a low drift, 2.5-V internal reference, eliminating the need for an external precision reference in most applications. A user-selectable gain configuration provides full-scale output voltages of 1.25 V (gain = ½), 2.5 V (gain = 1), or 5 V (gain = 2). This device operates from a single 2.7-V to 5.5-V supply, is specified monotonic, and provides high linearity of ±1 LSB INL.

Communication to the DACx0504 is performed through a 4-wire serial interface that operates at clock rates of up to 50 MHz. The VIO pin enables serial interface operation from 1.7 V to 5.5 V. The DACx0504 flexible interface enables operation with a wide range of industry-standard microprocessors and microcontrollers.

The DACx0504 incorporates a power-on-reset circuit that powers up and maintains the DAC outputs at either zero scale or midscale until a valid code is written to the device. This device consumes low current of 0.7 mA/channel at 5.5 V, making it suitable for battery-operated equipment. A per-channel power-down feature reduces the device current consumption to 15 µA.

The DACx0504 is characterized for operation over the temperature range of –40°C to +125°C, and is available in a small, 3-mm × 3-mm, QFN package.

Features

  • Performance
    • INL: ±1 LSB Maximum at 16-Bit Resolution
    • TUE: ±0.1% of FSR Maximum
  • Integrated 2.5 V Precision Internal Reference
    • Initial Accuracy: ±5 mV, Maximum
    • Low Drift: 2 ppm/°C Typical, DAC80504
  • High Drive Capability: 20 mA With 0.5 V From Supply Rails
  • Flexible Output Configuration
    • User Selectable Gain: 2, 1 or ½
    • Reset to Zero Scale or Midscale
  • Wide Operating Range
    • Power Supply: 2.7 V to 5.5 V
    • Temperature: –40˚C to +125˚C
  • 50-MHz, SPI-Compatible Serial Interface
    • 4-Wire Mode, 1.7 V to 5.5 V Operation
    • Daisy-Chain Operation
    • CRC Error Check
  • Low Power: 0.7 mA/Channel at 5.5 V
  • Small Package: 3-mm × 3-mm, 16-Pin WQFN

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Parametrics Compare all products in Precision DACs (<=10MSPS)

 
Resolution (Bits)
Architecture
DAC channels
Interface
Output range (Max) (mA/V)
Output range (Min) (mA/V)
Settling Time (µs)
Output type
Reference: type
Rating
Operating temperature range (C)
Features
DAC80504 DAC70504
16     14    
R-2R      
4     4    
SPI     SPI    
5     5    
0     0    
4     5    
Buffered Voltage     Buffered Voltage    
Int     Int    
Catalog     Catalog    
-40 to 125     -40 to 125    
Small Size     Reset to Mid-Scale
Small Size