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
SNR (dB)
IMD3 (dBc)
Power Consumption (Typ) (mW)
Operating Temperature Range (C)
Package Group
Package Size (mm2=WxL)
Approx. Price (US$)
Settling Time (µs)
DAC5681 DAC5681Z DAC5682Z
16     16     16    
1000     1000     1000    
1     1     2    
Parallel LVDS     Parallel LVDS     Parallel LVDS    
79     79     79    
81     81     81    
88     88     88    
650     800     1300    
-40 to 85     -40 to 85     -40 to 85    
VQFN     VQFN     VQFN    
64VQFN: 81 mm2: 9 x 9     64VQFN: 81 mm2: 9 x 9     64VQFN: 81 mm2: 9 x 9    
27.50 | 1ku     30.95 | 1ku     38.66 | 1ku    
0.0104     0.0104     0.0104    
Catalog     Catalog     Catalog    
Current Sink     Current Sink     Current Sink