ADS4249

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Dual-Channel, 14-Bit, 250-MSPS Analog-to-Digital Converter (ADC)

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Product details

Parameters

Sample rate (Max) (MSPS) 250 Resolution (Bits) 14 Number of input channels 2 Interface type DDR LVDS, Parallel CMOS Analog input BW (MHz) 600 Features Low Power Rating Catalog Input range (Vp-p) 2 Power consumption (Typ) (mW) 470 Architecture Pipeline SNR (dB) 72.8 ENOB (Bits) 11.45 SFDR (dB) 82 Operating temperature range (C) -40 to 85 Input buffer No open-in-new Find other High-speed ADCs (>10MSPS)

Package | Pins | Size

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

Features

  • Maximum Sample Rate: 250 MSPS
  • Ultra-Low Power with Single 1.8-V Supply:
    • 560-mW Total Power at 250 MSPS
  • High Dynamic Performance:
    • 80-dBc SFDR at 170 MHz
    • 71.7-dBFS SNR at 170 MHz
  • Crosstalk: > 90 dB at 185 MHz
  • Programmable Gain up to 6 dB for
    SNR/SFDR Trade-off
  • DC Offset Correction
  • Output Interface Options:
    • 1.8-V Parallel CMOS Interface
    • Double Data Rate (DDR) LVDS with
      Programmable Swing:
      • Standard Swing: 350 mV
      • Low Swing: 200 mV
  • Supports Low Input Clock Amplitude
    Down to 200 mVPP
  • Package: 9-mm × 9-mm, 64-Pin Quad Flat No-
    Lead (QFN) Package
open-in-new Find other High-speed ADCs (>10MSPS)

Description

The ADS4249 is a member of the ADS42xx ultralow-power family of dual-channel, 12-bit and 14-bit analog-to-digital converters (ADCs). Innovative design techniques are used to achieve high dynamic performance, while consuming extremely low power with a 1.8-V supply. This topology makes the ADS4249 well-suited for multi-carrier, wide-bandwidth communications applications.

The ADS4249 has gain options that can be used to improve SFDR performance at lower full-scale input ranges. This device also includes a dc offset correction loop that can be used to cancel the ADC offset. Both DDR LVDS and parallel CMOS digital output interfaces are available in a compact QFN-64 PowerPAD package.

The device includes internal references while the traditional reference pins and associated decoupling capacitors have been eliminated. The ADS4249 is specified over the industrial temperature range (–40°C to 85°C).

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

= Top documentation for this product selected by TI
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Type Title Date
* Datasheet ADS4249 Dual-Channel, 14-Bit, 250-MSPS Ultralow-Power ADC datasheet (Rev. E) Jan. 07, 2016
Technical articles How to achieve fast frequency hopping Mar. 03, 2019
Technical articles RF sampling: Learning more about latency Feb. 09, 2017
Technical articles Why phase noise matters in RF sampling converters Nov. 28, 2016
Technical articles How to minimize filter loss when you drive an ADC Oct. 20, 2016
Application notes Design Considerations for Avoiding Timing Errors during High-Speed ADC, LVDS Dat (Rev. A) May 22, 2015
Application notes Signal Chain Noise Figure Analysis Oct. 29, 2014
User guides TSW1265 Dual-Wideband RF-to-Digital Receiver Design Guide Sep. 03, 2013
Application notes Why Use Oversampling when Undersampling Can Do the Job? (Rev. A) Jul. 19, 2013
User guides ADS42xx EVM User’s Guide (Rev. A) Jun. 21, 2013
User guides TIDA-00070 Verified Design Reference Guide Jan. 23, 2013
User guides HSDC-SEK-10 Jan. 17, 2013
User guides Interfacing Altera FPGAs to ADS4249 and DAC3482 (TIDA-00069 Reference Guide) Jul. 10, 2012
Application notes High-Speed, Analog-to-Digital Converter Basics Jan. 11, 2012
User guides TSW3725 Evaluation Module Oct. 25, 2011
Application notes QFN Layout Guidelines Jul. 28, 2006

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
Description

The ADS4249EVM is a circuit board that allows designers to evaluate the performance of Texas Instruments‘ ADS4249 device, an extremely low power dual channel 14-bit 250 MSPS analog to digital converter. The ADC features a configurable parallel DDR LVDS or CMOS outputs. The EVM provides a (...)

Features
  • Transformer coupled analog input path
  • Amplifier path based on the THS4509
  • Configurable CMOS or DDR LVDS parallel output modes
  • Transformer coupled clock input path
  • CDCE72010 Jitter Clock Synchronizer and Jitter Cleaner clocking circuit
  • DDR LVDS output and capture ability via TSW1400EVM or TSW1405EVM (...)
  • EVALUATION BOARDS Download
    document-generic User guide
    Description

    The DAC3152EVM is a circuit board that allows designers to evaluate the performance of Texas Instruments' dual-channel 10-bit 500 MSPS DAC3152 digital-to-analog converter (DAC) with 10-byte wide DDR LVDS data input, very low power, size and latency. The EVM provides a flexible environment to test (...)

    Features
  • Comprehensive test capability for the DAC3152 for IF and RF outputs
  • Direct connection to TSW3100 pattern generator
  • Includes CDCP1803 for clock generation
  • Includes TRF370333 for complete transmitter evaluation
  • Easy setup: software control not required
  • Adapter connector compatible to Xilinx FPGA EVMs with (...)
  • EVALUATION BOARDS Download
    document-generic User guide
    Description

    The DAC3162EVM is a circuit board that allows designers to evaluate the performance of Texas Instruments' dual-channel 12-bit 500 MSPS DAC3162 digital-to-analog converter (DAC) with 12-byte wide DDR LVDS data input, very low power, size and latency. The EVM provides a flexible environment to test (...)

    Features
  • Comprehensive test capability for the DAC3162 for IF and RF outputs
  • Direct connection to TSW3100 pattern generator
  • Includes CDCP1803 for clock generation
  • Includes TRF370333 for complete transmitter evaluation
  • Easy setup: software control not required
  • Adapter connector compatible to Xilinx FPGA EVMs with (...)
  • EVALUATION BOARDS Download
    document-generic User guide
    499
    Description

    The TSW1265EVM is a wideband dual receiver reference design and evaluation platform. The signal chain allows conversion from RF to bits using a dual-channel downconverter mixer, the LMH6521 dual-channel DVGA, and the ADS4249 14-bit 250-MSPS ADC. The TSW1265EVM also includes the LMK04800 dual-PLL (...)

    Features
  • Complete RF-to-bits receiver evaluation platform utilizing a dual-channel downconverter, LMH6521 DVGA, and ADS4249 14-bit 250-MSPS ADC
  • The LMK04800 clock generator and jitter-cleaning provides a complete onboard clocking solution
  • A software GUI is provided to configure the ADS4249, LMK04800, and (...)
  • EVALUATION BOARDS Download
    document-generic User guide
    99
    Description

    The TSW1405EVM is a low cost data capture circuit board used to evaluate some of Texas Instruments’ (TI) most popular high speed analog-to-digital converters (ADC).

     

    The TSW1405EVM supports a high speed LVDS bus capable of providing 16-bit samples at 1.0 GSPS. The platform supports a 64k sample depth (...)

    Features
  • Simple 16-bit waveform capture from many of TI’s high speed ADC EVM’s
  • Supports 64k sample depth at up to 1.0 GSPS LVDS I/O rates
  • LatticeECP3 high speed mini FPGA
  • Analyzes up to 8 channels concurrently
  • Single mini USB cable for power and data
  • Utilizes an intuitive/easy-to-use GUI package
  • Industry’s (...)
  • EVALUATION BOARDS Download
    document-generic User guide
    399
    Description

    The TSW3085 Evalutaion Module is a circuit board that allows system designers to evaluate the combined performance of Texas Instruments' transmit signal chain with the LMK04806B (formally National Semiconductor) low noise clock generator/jitter cleaner. For ease of use as a complete RF transmit (...)

    Features
  • Includes LMK04806B for clock generation and jitter cleaning
  • Direct connection to TSW3100 signal generator
  • Comprehensive test capability for the transmitter (DAC3482 dual DAC and TRF3705 IQ Modulator) at analog baseband, IF and RF outputs
  • Software support with a full featured GUI for easy testing and (...)
  • GUIS FOR EVALUATION MODULES (EVM) Download
    SBAC113B.ZIP (129504 KB)

    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 (...)
    SUPPORT SOFTWARE Download
    SBAC120.ZIP (262219 KB)

    Design tools & simulation

    SIMULATION MODELS Download
    SBAM107.ZIP (41 KB) - IBIS Model
    SIMULATION TOOLS Download
    PSpice® for TI design and simulation tool
    PSPICE-FOR-TI — PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
    Features
    • Leverages Cadence PSpice Technology
    • Preinstalled library with a suite of digital models to enable worst-case timing analysis
    • Dynamic updates ensure you have access to most current device models
    • Optimized for simulation speed without loss of accuracy
    • Supports simultaneous analysis of multiple products
    • (...)
    DESIGN TOOLS Download
    SBAC119B.ZIP (3547 KB)
    PCB LAYOUTS Download
    SLWR039.ZIP (3979 KB)
    SCHEMATICS Download
    SLAC459B.ZIP (6548 KB)
    SCHEMATICS Download
    SLAR064.ZIP (1580 KB)

    Reference designs

    REFERENCE DESIGNS Download
    Dual-Wideband RF-to-Digital Receiver Design
    TIDA-00073 The TSW1265EVM is an example design of a wideband RF to digital dual receiver solution capable of digitizing up to 125MHz of spectrum. The system provides a reference on how to use the ADS4249, LMH6521, LMK0480x, and a dual mixer to achieve this.  This reference EVEM coupled with a capture card (...)
    document-generic Schematic document-generic User guide
    REFERENCE DESIGNS Download
    FPGA Firmware Project for Measuring Bit Errors in the Output Word of an A to D Converter
    TIDA-00070 For applications where there are bit errors and resulting sample errors (also called sparkle codes, word errors, or code errors), the ability to measure the Error rates caused by these bit errors is important. This FPGA firmware based application note proposes a method to accurately measure these (...)
    document-generic Schematic document-generic User guide
    REFERENCE DESIGNS Download
    FPGA Firmware Example of How To Interface Altera FPGAs to High-Speed LVDS-Interface Data Converters
    TIDA-00069 This reference design and the associated example Verilog code can be used as a starting point for interfacing Altera FPGAs to Texas Instruments' high-speed LVDS-interface analog-to-digital converters (ADC) and digital-to-analog converters (DAC). The firmware implementation is explained and the (...)
    document-generic Schematic document-generic User guide
    REFERENCE DESIGNS Download
    Basestation Transceiver with DPD Feedback Path
    TIDA-00068 The design is for a small cell base station development platform.  It provides two real receive paths, two complex transmit paths, and a shared real feedback path.  This design has macro basestation performance, but with small cell base station footprint.  The current design handles (...)
    document-generic Schematic document-generic User guide

    CAD/CAE symbols

    Package Pins Download
    VQFN (RGC) 64 View options

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