DAC5681

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

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Product details

Parameters

Resolution (Bits) 16 DAC channels 1 Interface Parallel LVDS Sample/update rate (MSPS) 1000 Features Ultra High Speed Rating Catalog Interpolation 1x Power consumption (Typ) (mW) 650 SFDR (dB) 81 Architecture Current Sink Operating temperature range (C) -40 to 85 Reference: type Int open-in-new Find other High-speed DACs (>10MSPS)

Package | Pins | Size

VQFN (RGC) 64 81 mm² 9 x 9 open-in-new Find other High-speed DACs (>10MSPS)

Features

  • 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
open-in-new Find other High-speed DACs (>10MSPS)

Description

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.

open-in-new Find other High-speed DACs (>10MSPS)
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Technical documentation

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Type Title Date
* Datasheet 16-bit 1.0 GSPS Digital-To-Analog Converter (DAC) . datasheet (Rev. C) Aug. 06, 2012
Application notes Q3 2009 Issue Analog Applications Journal Sep. 24, 2018
Technical articles Digital signal processing in RF sampling DACs – part 2 Apr. 04, 2017
Technical articles Digital signal processing in RF sampling DACs - part 1 Feb. 13, 2017
Technical articles Why phase noise matters in RF sampling converters Nov. 28, 2016
Technical articles RF sampling: frequency planning yields a clean spectrum Nov. 18, 2015
Application notes High Speed, Digital-to-Analog Converters Basics (Rev. A) Oct. 23, 2012
User guides TSW1400 Pattern Generators May 03, 2012
More literature TI and Altera Ease Design Process with Compatible Evaluation Tools Apr. 25, 2011
More literature TI and Xilinx Ease Design Process with Compatible Evaluation Tools Apr. 25, 2011
Application notes Interfacing op amps to high-speed DACs, Part 1: Current-sinking DACs Jul. 14, 2009
Application notes Passive Terminations for Current Output DACs Nov. 10, 2008
Application notes CDCE72010 as a Clocking Solution for High-Speed Analog-to-Digital Converters Jun. 08, 2008
Application notes Phase Noise Performance and Jitter Cleaning Ability of CDCE72010 Jun. 02, 2008

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development

EVALUATION BOARDS Download
document-generic User guide
$499.00
Description
The DAC5681EVM is a circuit board that allows designers to evaluate the performance of Texas Instruments' single-channel 16-bit 1.0 GSPS digital-to-analog converter (DAC) featuring a fll 1GSPS DDR LVDS interface. The EVM provides a flexible environment to test the DAC5681 under a variety of clock (...)
Features
Comprehensive test capability for DAC5681 Direct connection to TSW3100 signal generator EVM Programmable Low Jitter Clock Synthesizer capable of working with a VCXO or an external clock source Clock synchronization with TSW3100 for signal integrity Software support with a fully featured GUI for easy (...)
EVALUATION BOARDS Download
document-generic User guide
Description

The DAC5681ZEVM is a circuit board that allows designers to evaluate the performance of Texas Instruments' single-channel 16-bit 1.0 GSPS digital-to-analog converter (DAC) featuring a fll 1GSPS DDR LVDS interface, integrated 2x/4x interpolation filters, on-board clock multiplier and internal voltage (...)

Features
  • Comprehensive test capability for DAC5681Z
  • Direct connection to TSW3100 signal generator EVM
  • Has a programmable Low Jitter Clock Synthesizer capable of working with a VCXO or an external clock source
  • Clock synchronization with TSW3100 for signal integrity
  • Software support with a fully featured GUI for (...)
GUIS FOR EVALUATION MODULES (EVM) Download
SLAC497A.ZIP (59041 KB)
GUIS FOR EVALUATION MODULES (EVM) Download
SLLC420B.ZIP (199990 KB)
INTERFACE ADAPTERS Download
$49.00
Description
The FMC-DAC-Adapter passive interconnect board enables the output of TI’s LVDS input high speed DACs to be directly connected to a standard FMC interconnect header, a typical input on the latest Xilinx FPGA EVMs. This enables users of TI’s high speed DAC EVMs to directly interface to Xilinx (...)
Features
  • Enables direct connection to TI high speed DAC EVM LVDS inputs from the FMC standard header

Software development

SUPPORT SOFTWARE Download
High-speed data converter pro software
DATACONVERTERPRO-SW This high-speed data converter pro GUI is a PC (Windows® XP/7 compatible) program designed to aid in evaluation of most TI high-speed data converter and analog front-end (AFE) platforms. Designed to support the entire TSW14xxx series of data-capture and pattern-generation cards (...)
Features
  • Compatible with TSW1400, TSW1405, TSW1406 and TSW14J10, TSW14J50, TSW14J56, and TSW14J57 pattern-generation and data-capture platforms
  • Works with all TI high-speed DAC, ADC, and AFE products
  • Provides time-domain and frequency-domain analysis
  • Supports single-tone, multi-tone, and modulated (...)

Design tools & simulation

SIMULATION MODELS Download
SLLC320A.ZIP (7 KB) - IBIS Model
CALCULATION TOOLS Download
SLAC169.ZIP (33 KB)

CAD/CAE symbols

Package Pins Download
VQFN (RGC) 64 View options

Ordering & quality

Support & training

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