16-Bit, 1.0-GSPS Digital-to-Analog Converter (DAC) - DAC5681


16-Bit, 1.0-GSPS Digital-to-Analog Converter (DAC)



The DAC5681 is a 16-bit 1.0 GSPS digital-to-analog converter (DAC) with wideband LVDS data input and internal voltage reference. The DAC5681 offers superior linearity and noise performance.

The DAC5681 integrates a wideband LVDS port with on-chip termination, providing full 1.0 GSPS data transfer into the DAC and lower EMI than traditional CMOS data interfaces. An on-chip delay lock loop (DLL) simplifies LVDS interfacing by providing skew control for the LVDS input data clock.

The current-steering architecture of the DAC5681 consists of a segmented array of current sinking switches directing up to 20mA of full-scale current to complementary output nodes. An accurate on-chip voltage reference is temperature-compensated and delivers a stable 1.2-V reference voltage. Optionally, an external reference may be used.

The DAC5681 is characterized for operation over the industrial temperature range of –40°C to 85°C and is available in a 64-pin QFN package. The device is pin upgradeable to the other members of the family: the DAC5681Z and DAC5682Z. The single-channel DAC5681Z and dual-channel DAC5682Z both provide optional 2x/4x interpolation and a clock multiplying PLL.


  • 16-Bit Digital-to-Analog Converter (DAC)
  • 1.0 GSPS Update Rate
  • 16-Bit Wideband Input LVDS Data Bus
    • 8 Sample Input FIFO
    • On-Chip Delay Lock Loop
  • High Performance
    • 73 dBc ACLR WCDMA TM1 at 180 MHz
  • On Chip 1.2 V Reference
  • Differential Scalable Output: 2 to 20 mA
  • Package: 64-Pin 9 × 9 mm QFN

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Parametrics Compare all products in High Speed DAC (>10MSPS)

Resolution (Bits)
Sample / Update Rate (MSPS)
DAC: Channels
Supply Voltage(s) (V)
IMD3 (dBc)
Power Consumption (Typ) (mW)
Operating Temperature Range (C)
Package Group
Package Size: mm2:W x L (PKG)
Approx. Price (US$)
Output Range Max. (mA)
Output Range Min. (mA)
Output Type
Reference: Type
DAC5681 DAC5681Z DAC5682Z
16    16    16   
1000    1000    1000   
1    1    2   
Parallel LVDS    Parallel LVDS    Parallel LVDS   
81    81    81   
1.8, 3.3    1.8, 3.3    1.8,3.3   
88    88    88   
650    800    1300   
-40 to 85    -40 to 85    -40 to 85   
64VQFN: 81 mm2: 9 x 9(VQFN)    64VQFN: 81 mm2: 9 x 9(VQFN)    64VQFN: 81 mm2: 9 x 9(VQFN)   
27.50 | 1ku    30.95 | 1ku    38.66 | 1ku   
Catalog    Catalog    Catalog   
Current Sink    Current Sink    Current Sink   
20    20    20   
2    2    2   
Differential    Differential    Differential   
Int    Int    Int