Data Conversion Analog-to-Digital Converters (ADC) High Speed ADCs (Fs >=10Msps)

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LTC2249 - 14-Bit, 80Msps Low Power 3V ADC

Features

  • Sample Rate: 80Msps
  • Single 3V Supply (2.7V to 3.4V)
  • Low Power: 222mW
  • 73dB SNR at 70MHz Input
  • 90dB SFDR at 70MHz Input
  • No Missing Codes
  • Flexible Input: 1VP-P to 2VP-P Range
  • 575MHz Full Power Bandwidth S/H
  • Clock Duty Cycle Stabilizer
  • Shutdown and Nap Modes
  • Pin Compatible Family
    125Msps: LTC2253 (12-Bit), LTC2255 (14-Bit)
    105Msps: LTC2252 (12-Bit), LTC2254 (14-Bit)
    80Msps: LTC2229 (12-Bit), LTC2249 (14-Bit)
    65Msps: LTC2228 (12-Bit), LTC2248 (14-Bit)
    40Msps: LTC2227 (12-Bit), LTC2247 (14-Bit)
    25Msps: LTC2226 (12-Bit), LTC2246 (14-Bit)
    10Msps: LTC2225 (12-Bit), LTC2245 (14-Bit)
  • 32-Pin (5mm × 5mm) QFN Package

Typical Application

LTC2249 Typical Application
LTC2249 Typical Application

Description

The LTC2249 is a 14-bit 80Msps, low power 3V A/D converter designed for digitizing high frequency, wide dynamic range signals. The LTC2249 is perfect for demanding imaging and communications applications with AC performance that includes 73dB SNR and 90dB SFDR for signals well beyond the Nyquist frequency.

DC specs include ±1LSB INL (typ), ±0.5LSB DNL (typ) and no missing codes over temperature. The transition noise is a low 1.2LSBRMS.

A single 3V supply allows low power operation. A separate output supply allows the outputs to drive 0.5V to 3.6V logic.

A single-ended CLK input controls converter operation. An optional clock duty cycle stabilizer allows high performance at full speed for a wide range of clock duty cycles.

Packaging

CAD Symbols and Footprints: The downloadable Zip file below contains the schematic symbol and PCB footprints.

For complete and up to date package information and drawings, please refer to our packaging page

Part Number Package Code Temp Package
Drawing		 RoHS
LTC2249CUH#PBF 5x5 QFN-32 UH C 05-08-1693 Yes
LTC2249CUH#TRPBF 5x5 QFN-32 UH C 05-08-1693 Yes
LTC2249IUH#PBF 5x5 QFN-32 UH I 05-08-1693 Yes
LTC2249IUH#TRPBF 5x5 QFN-32 UH I 05-08-1693 Yes


LTC2249 Package Drawing

Order Info

  • Part numbers ending in PBF are lead free. Solder plated terminal finish (SnPb) versions are non-standard and special terms and conditions and pricing applies if available. Please contact LTC marketing for information.
  • Part numbers containing TR or TRM are shipped in tape and reel or 500 unit mini tape and reel, respectively
  • Please refer to our general ordering information or the product datasheet for more details

Package Variations and Pricing

Part Number Package Temp Price
(1-99)		 Price
(1k)*		 RoHS
LTC2249CUH#PBF 5x5 QFN-32 C $34.58 $25.00 Yes
LTC2249CUH#TRPBF 5x5 QFN-32 C $25.10 Yes
LTC2249IUH#PBF 5x5 QFN-32 I $41.50 $30.00 Yes
LTC2249IUH#TRPBF 5x5 QFN-32 I $30.10 Yes
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* The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Linear Technology sales office or authorized distributor.

Demo Boards

Linear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.

Part Number Description Price Documentation
DC1057A LT6411 driver and LTC2249 ADC combo board, Requires DC718 $200.00
DC782A-A LTC2249IUH | High Speed ADC, VDD = +3.0V, 80Msps, 14-Bit 1MHz < Ain < 70MHz, req DC718 $200.00
DC782A-Q LTC2249IUH | High Speed ADC, VDD = +3.0V, 80Msps, 14-Bit 70MHz < Ain < 170MHz, req DC718 $200.00
DC900A-01E Combo Demoboard for LTC2249 and LT1993-2 (6dB) Req DC718 Contact Factory
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Companion Boards

Part Number Description Price Documentation
DC718C USB Data Acquisition Controller, for PScope Evaluation Kits (<135Mbps) $300.00
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Click here to view our complete list of demo boards

Applications

  • Wireless and Wired Broadband Communication
  • Imaging Systems
  • Ultrasound
  • Spectral Analysis
  • Portable Instrumentation

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Design Tools

Linear Technology provides a variety of custom design simulation tools and device models to allow even novice designers to quickly and easily evaluate circuits using high performance switching regulators, amplifiers, data converters, filters and more. Please visit our Design Tools page to view and download:

  • LTspice - A powerful SPICE simulator, schematic capture and waveform viewer with enhancements and models for easing the simulation of switching regulators
  • LTpowerCAD - A complete power supply selection, synthesis and design tool
  • LTpowerPlay - A development environment supporting Linear Technology's Digital Power System Management (PSM) products
  • PScope & QuikEval - USB-based product demonstration and data acquisition system for use with our ADCs, DACs, and more
  • Linduino - Arduino compatible system for developing and distributing firmware libraries and example code
  • LinearLab Tools - A collection of Matlab and Python programs that provide direct access to Linear Technology’s data converter evaluation boards
  • And More!

Technical Support