LTC2205 - 16-Bit, 65Msps ADCs


  • Sample Rate: 65Msps/40Msps
  • 79dB SNR and 100dB SFDR (2.25VP-P Range)
  • SFDR >92dB at 140MHz (1.5VP-P Input Range)
  • PGA Front End (2.25VP-P or 1.5VP-P Input Range)
  • 700MHz Full Power Bandwidth S/H
  • Optional Internal Dither
  • Optional Data Output Randomizer
  • Single 3.3V Supply
  • Power Dissipation: 610mW/480mW
  • Optional Clock Duty Cycle Stabilizer
  • Out-of-Range Indicator
  • Pin Compatible Family
     105Msps: LTC2207 (16-Bit), LTC2207-14 (14-Bit)
     80Msps: LTC2206 (16-Bit), LTC2206-14 (14-Bit)
     65Msps: LTC2205 (16-Bit), LTC2205-14 (14-Bit)
     40Msps: LTC2204 (16-Bit)
  • 48-Pin (7mm × 7mm) QFN Package

Typical Application

LTC2205 Typical Application
LTC2205 Typical Application


The LTC2205/LTC2204 are sampling 16-bit A/D converters designed for digitizing high frequency, wide dynamic range signals up to input frequencies of 700MHz. The input range of the ADC can be optimized with the PGA front end.

The LTC2205/LTC2204 are perfect for demanding communications applications, with AC performance that includes 79dB SNR and 100dB spurious free dynamic range (SFDR). Ultralow jitter of 90fsRMS allows undersampling of high input frequencies with excellent noise performance. Maximum DC specs include ±4LSB INL, ±1LSB DNL (no missing codes).

A separate output power supply allows the CMOS output swing to range from 0.5V to 3.6V.

The ENC+ and ENC inputs may be driven differentially or single-ended with a sine wave, PECL, LVDS, TTL or CMOS inputs. An optional clock duty cycle stabilizer allows high performance at full speed with a wide range of clock duty cycles.

LTC2205-14 14
LTC2205-16 16


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
LTC2205CUK#PBF 7x7 QFN-48 UK C 05-08-1704 Yes
LTC2205CUK#TRPBF 7x7 QFN-48 UK C 05-08-1704 Yes
LTC2205IUK#PBF 7x7 QFN-48 UK I 05-08-1704 Yes
LTC2205IUK#TRPBF 7x7 QFN-48 UK I 05-08-1704 Yes

LTC2205 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
LTC2205CUK#PBF 7x7 QFN-48 C $61.89 $43.33 Yes
LTC2205CUK#TRPBF 7x7 QFN-48 C $43.43 Yes
LTC2205IUK#PBF 7x7 QFN-48 I $74.29 $52.00 Yes
LTC2205IUK#TRPBF 7x7 QFN-48 I $52.10 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
DC918C-E LTC2205 | CMOS OUT, 65Msps, 16-Bit ADC, 1MHz< Ain < 70MHz, (req. DC718) $200.00
DC918C-F LTC2205 | CMOS OUT, 65Msps, 16-Bit ADC, 70MHz< Ain < 140MHz, (req. DC718) $200.00
DC919A-C LTC2205 | CMOS OUT, DC INPUT, 65Msps 16-Bit ADC, DC< Ain < 70MHz, (req. DC718) $200.00
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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


  • Telecommunications
  • Receivers
  • Cellular Base Stations
  • Spectrum Analysis
  • Imaging Systems
  • ATE

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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!

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